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ISL8036IRZ

hot ISL8036IRZ

ISL8036IRZ

For Reference Only

Part Number ISL8036IRZ
Manufacturer Intersil
Description IC REG BUCK ADJ 3A SNGL/DL 24QFN
Datasheet ISL8036IRZ Datasheet
Package 24-VFQFN Exposed Pad
In Stock 16540 piece(s)
Unit Price $ 4.58 *
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Lead Time Can Ship Immediately
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ISL8036IRZ

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  • To learn about the specification of ISL8036IRZ, please search the datasheet by clicking the link above. If you couldn't find the correct datasheet, please refer to the manufacturer's official datasheet.
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ISL8036IRZ Specifications

ManufacturerIntersil
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators
Datasheet ISL8036IRZ Datasheet
Package24-VFQFN Exposed Pad
Series-
FunctionStep-Down
Output ConfigurationPositive
TopologyBuck
Output TypeAdjustable
Number of Outputs1 or 2
Voltage - Input (Min)2.85V
Voltage - Input (Max)6V
Voltage - Output (Min/Fixed)0.8V
Voltage - Output (Max)6V
Current - Output3A
Frequency - Switching1MHz
Synchronous RectifierYes
Operating Temperature-40°C ~ 85°C (TA)
Mounting TypeSurface Mount
Package / Case24-VFQFN Exposed Pad
Supplier Device Package24-QFN (4x4)

ISL8036IRZ Datasheet

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FN6853 Rev 3.00 August 17, 2012 ISL8036, ISL8036A Dual 3A 1MHz/2.5MHz High Efficiency Synchronous Buck Regulator DATASHEETISL8036, ISL8036A are integrated power controllers rated for dual 3A output current or current sharing operation with a 1MHz (ISL8036)/2.5MHz (ISL8036A) step-down regulator, which is ideal for any low power low-voltage applications. The channels are 180° out-of-phase for input RMS current and EMI reduction. It is optimized for generating low output voltages down to 0.8V each. The supply voltage range is from 2.8V to 6V, allowing for the use of a single Li+ cell, three NiMH cells or a regulated 5V input. The two channels are 180° out-of-phase, and each one has a guaranteed minimum output current of 3A. They can be combined to form a single 6A output in the current sharing mode. While in current sharing, the interleaved PWM signals reduce input and output ripple. The ISL8036, ISL8036A includes a pair of low ON-resistance P-channel and N-channel internal MOSFETs to maximize efficiency and minimize external component count. 100% duty-cycle operation allows less than 250mV dropout voltage at 3A each. The ISL8036, ISL8036A offers an independent 1ms Power-good (PG) timer at power-up. When shutdown, ISL8036, ISL8036A discharges the output capacitor. Other features include internal digital soft-start, enable for power sequence, overcurrent protection, and thermal shutdown. The ISL8036, ISL8036A is offered in a 24 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 1.5cm2 area. Features • 3A High Efficiency Synchronous Buck Regulator with up to 95% Efficiency • 2% Output Accuracy Over-Temperature/Load/Line • Internal Digital Soft-Start - 1.5ms • 6A Current Sharing Mode Operation • External Synchronization up to 6MHz • Internal Current Mode Compensation • Peak Current Limiting and Hiccup Mode Short Circuit Protection • Reverse Overcurrent Protection Applications • DC/DC POL Modules • µC/µP, FPGA and DSP Power • Plug-in DC/DC Modules for Routers and Switchers • Test and Measurement Systems • Li-ion Battery Power Devices • Bar Code Reader Related Literature • AN1616, “ISL8036CRSHEVAL1Z Current Sharing 6A Low Quiescent Current High Efficiency Synchronous Buck Regulator” • AN1617, “ISL8036DUALEVAL1Z Dual 3A Low Quiescent Current High Efficiency Synchronous Buck Regulator” • AN1615, “ISL8036ACRSHEVAL1Z Current Sharing 6A Low Quiescent Current High Efficiency Synchronous Buck Regulator” • AN1618, “ISL8036ADUALEVAL1Z Dual 3A Low Quiescent Current High Efficiency Synchronous Buck Regulator” OUTPUT LOAD (A) E F F IC IE N C Y ( % ) FIGURE 1. EFFICIENCY vs LOAD, 1MHz 5VIN PWM, TA = +25°C 40 50 60 70 80 90 100 0 1 2 3 4 5 6 3.3VOUT- PWM FN6853 Rev 3.00 Page 1 of 26 August 17, 2012

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ISL8036, ISL8036ATypical Applications FIGURE 2. TYPICAL APPLICATION DIAGRAM - SINGLE 6A FIGURE 3. TYPICAL APPLICATION DIAGRAM - DUAL 3A OUTPUTS L1 1.5µH LX1 PGND FB1 VIN1, 2 EN1 PG1 SYNC INPUT 2.8V TO 6V OUTPUT1 1.8V/6A C1 2x22µF ISL8036, ISL8036A C2 R2 124k R3 100k 2x22µF VDD SGND C3 12pF L2 1.5µH FB2 C4 R6 50k 2x22µF C6 150pF LX2 PGND SGND EN2 PG2 COMP SS C5 22nF L1 1.5µH LX1 PGND FB1 VIN EN1 PG1 SYN C INPUT 2.7V TO 6V OUTPUT1 1.8V/3A C1 2x22µF ISL8036, C2 R2 124k R3 100k 2x22µF VDD SGND C3 12pF L2 1.5µH FB2 OUTPUT2 1.8V/3A C4 R5 124k R6 100k 2x22µF C5 12pF LX2 PGND SGND EN2 PG2 COMP SS ISL8036AFN6853 Rev 3.00 Page 2 of 26 August 17, 2012

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ISL8036, ISL8036ATABLE 1. COMPONENT VALUE SELECTION FOR DUAL OPERATION VOUT 0.8V 1.2V 1.5V 1.8V 2.5V 3.3V C1 2x22µF 2x22µF 2x22µF 2x22µF 2x22µF 2x22µF C2 (or C4) 2X22µF 2X22µF 2X22µF 2X22µF 2X22µF 2X22µF L1 (or L2)* 1.0~2.2µH 1.0~2.2µH 1.0~2.2µH 1.0~3.3µH 1.0~3.3µH 1.0~4.7µH R2 (or R5) 0 50k 87.5k 124k 212.5k 312.5k R3 (or R6) 100k 100k 100k 100k 100k 100k *For ISL8036A, the values used for L1 (or L2) are half the values specified above for each VOUT. TABLE 2. COMPONENT VALUE SELECTION FOR CURRENT SHARING OPERATION VOUT 0.8V 1.2V 1.5V 1.8V 2.5V 3.3V C1 2x22µF 2x22µF 2x22µF 2x22µF 2x22µF 2x22µF C2 (or C4) 2X22µF 2X22µF 2X22µF 2X22µF 2X22µF 2X22µF L1 (or L2)* 1.0~2.2µH 1.0~2.2µH 1.0~2.2µH 1.0~3.3µH 1.0~3.3µH 1.0~4.7µH R2 0 50k 87.5k 124k 212.5k 312.5k R3 100k 100k 100k 100k 100k 100k R6 30k 33k 31k 30k 29k 28k C6 250pF 180pF 150pF 150pF 150pF 150pF *For ISL8036A, the values used for L1 (or L2) are half the values specified above for each VOUT. NOTE: C5 value (22nF) is given by Equation 1 corresponding to the desired soft-start time. TABLE 3. SUMMARY OF DIFFERENCES PART NUMBER SWITCHING FREQUENCY ISL8036 Internally fixed switching frequency FSW = 1MHz ISL8036A Internally fixed switching frequency FSW = 2.5MHz FN6853 Rev 3.00 Page 3 of 26 August 17, 2012

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ISL8036, ISL8036ABlock Diagram LX1 + CSA1 + + + SLOPE COM P STAR T SO FT- START 0.8V EAM P CO M P PW M LOGIC CONTRO LLER PRO TECTION DRIVER FB1 + 0.736V 0.864V PG1 SYNC SHUTDO W N VIN1 PG ND OSCILLATOR + BANDGAP SCP + 0.5V EN1 SHUTDO W N 1m s DELAY 0.3pF 27pF 390k SGND 3pF 1.6k LX2 + CSA2 + + + SLO PE COM P STAR T SOFT- START 0.8V EAM P CO M P PW M LOG IC CO NTROLLER PRO TECTIO N DRIVER FB2 + 0.736V 0.864V PG2 SHUTDOW N VIN2 PG ND + BANDGAP SCP + 0.5V EN2 SHUTDOW N 1m s DELAY SGND 3pF 1.6k 1M THERM AL SHUTDO W N SHUTDO W N COM P VIN2 1M VIN1 OCP THRESHO LD LOGIC SS SS 0.3pF 27pF 390kFN6853 Rev 3.00 Page 4 of 26 August 17, 2012

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ISL8036, ISL8036APin Configuration ISL8036, ISL8036A (24 LD QFN) TOP VIEW L X 2 P G N D 2 P G N D 2 P G N D 1 P G N D 1 L X 1 C O M P N C F B 1 S G N D P G 1 S Y N C LX2 VIN2 VIN2 EN2 PG2 FB2 LX1 VIN1 VIN1 VDD SS EN1 1 2 3 4 5 6 18 17 16 15 14 13 24 23 22 21 20 19 7 8 9 10 11 12 25 PAD Pin Descriptions PIN NUMBER SYMBOL DESCRIPTION 1, 24 LX2 Switching node connection for Channel 2. Connect to one terminal of inductor for VOUT2. 22, 23 PGND2 Negative supply for the power stage of Channel 2. 4 EN2 Regulator Channel 2 enable pin. Enable the output, VOUT2, when driven to high. Shutdown the VOUT2 and discharge output capacitor when driven to low. Do not leave this pin floating. 5 PG2 1ms timer output. At power-up or EN HI, this output is a 1ms delayed Power-Good signal for the VOUT2 voltage. 6 FB2 The feedback network of the Channel 2 regulator. To be connected to FB1 (current sharing) 7 COMP An additional external network across COMP and SGND is required to improve the loop compensation of the amplifier channel parallel operation. The soft-start pin should be tied to the external capacitor. COMP pin is NC in dual mode operation, using internal compensation. If SS pin is tied to CSS (without connection to VIN), external compensation is automtaically used. Connect an external R,C network on COMP pin for parallel mode operation. 8 NC No connect pin; please tie to GND. 9 FB1 The feedback network of the Channel 1 regulator. FB1 is the negative input to the transconductance error amplifier. The output voltage is set by an external resistor divider connected to FB1. With a properly selected divider, the output voltage can be set to any voltage between the power rail (reduced by converter losses) and the 0.8V reference. There is an internal compensation to meet a typical application. In addition, the regulator power-good and undervoltage protection circuitry use FB1 to monitor the Channel 1 regulator output voltage. 10 SGND System ground. 11 PG1 1ms timer output. At power-up or EN HI, this output is a 1ms delayed Power-Good signal for the VOUT1 voltage. 12 SYNC Connect to logic high or input voltage VIN . Connect to an external function generator for external Synchronization. Negative edge trigger. Do not leave this pin floating. Do not tie this pin low (or to SGND). 13 EN1 Regulator Channel 1 enable pin. Enable the output, VOUT1, when driven to high. Shutdown the VOUT1 and discharge output capacitor when driven to low. Do not leave this pin floating.FN6853 Rev 3.00 Page 5 of 26 August 17, 2012

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ISL8036, ISL8036A14 SS SS is used to adjust the soft-start time. When SS pin is tied to VIN, SS time is 1.5ms. SS pin is tied to VIN only in dual mode operation. SS pin is tied to CSS only in parallel mode operation, using only external compensation. Connect a capacitor from SS to SGND to adjust the soft-start time (current sharing). CSS should not be larger than 33nF. This capacitor, along with an internal 5µA current source sets the soft-start interval of the converter, tSS. 15 VDD Input supply voltage for the logic. VDD to be at the same potential as VIN +0.3/-0.5V. 20, 21 PGND1 Negative supply for the power stage of Channel 1. 18, 19 LX1 Switching node connection for Channel 1. Connect to one terminal of inductor for VOUT1. 16, 17 2, 3 VIN1, VIN2 Input supply voltage. Connect 22µF ceramic capacitor to power ground per channel. 25 PAD The exposed pad must be connected to the SGND pin for proper electrical performance. Add as much vias as possible for optimal thermal performance. Pin Descriptions (Continued) PIN NUMBER SYMBOL DESCRIPTION CSS F  6.25 tSS s = (EQ. 1) Ordering Information PART NUMBER (Notes 2, 3) PART MARKING TEMP. RANGE (°C) PACKAGE (Pb-free) PKG. DWG. # ISL8036IRZ 80 36IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D ISL8036IRZ-T (Note 1) 80 36IRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D ISL8036AIRZ 80 36AIRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D ISL8036AIRZ-T (Note 1) 80 36AIRZ -40 to +85 24 Ld 4x4 QFN L24.4x4D ISL8036CRSHEVAL1Z Evaluation Board ISL8036DUALEVAL1Z Evaluation Board ISL8036ACRSHEVAL1Z Evaluation Board ISL8036ADUALEVAL1Z Evaluation Board NOTES: 1. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL8036, ISL8036A. For more information on MSL, please see Technical Brief TB363.FN6853 Rev 3.00 Page 6 of 26 August 17, 2012

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ISL8036, ISL8036ATable of Contents Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Thermal Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 ISL8036 Typical Operating Performance for Dual PWM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 ISL8036A Typical Operating Performance for Dual PWM Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 ISL8036 Typical Operating Performance for Current Sharing PWM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 ISL8036A Typical Operating Performance for Current Sharing PWM Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 PWM Control Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Synchronization Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Output Current Sharing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Overcurrent Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 PG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 UVLO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Soft-start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Discharge Mode (Soft-Stop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Power MOSFETs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 100% Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Thermal Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Applications Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Output Inductor and Capacitor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Output Voltage Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Input Capacitor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 PCB Layout Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Package Outline Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26FN6853 Rev 3.00 Page 7 of 26 August 17, 2012

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ISL8036, ISL8036AAbsolute Maximum Ratings (Reference to SGND) Thermal Information VIN1, VIN2, VDD . . . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V (DC) or 7V (20ms) LX1, LX2 . . . . . . . . . . . . . -3V/(10ns)/-1.5V (100ns)/-0.3V (DC) to 6.5V (DC) or . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V (20ms)/8.5V(10ns) EN1, EN2, PG1, PG2, SYNC, SS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V FB1, FB2, COMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.7V NC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 0.3V ESD Ratings Human Body Model (Tested per JESD22-A114) . . . . . . . . . . . . . . . . . 4kV Charged Device Model (Tested per JESD22-C101E). . . . . . . . . . . . . . 2kV Machine Model (Tested per JESD22-A115). . . . . . . . . . . . . . . . . . . . 300V Latch Up (Tested per JESD-78A; Class 2, Level A) . . . . . . . . . . . . . . 100mA Thermal Resistance (Typical) JA (°C/W) JC (°C/W) 24 Ld 4x4 QFN (Notes 4, 5). . . . . . . . . . . 36 2 Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-55°C to +150°C Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.85V to 6V Load Current Range per Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . 0A to 3A Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES: 4. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. 5. For JC, “case temperature” location is at the center of the exposed metal pad on the package underside. Electrical Specifications Unless otherwise noted, the typical specifications are measured at the following conditions: TA = -40°C to +85°C, VIN = 3.6V, EN1 = EN2 = VDD, L = 1.5µH, C1 = C2 = C4 = 2x22µF, IOUT1 = IOUT2 = 0A to 3A, unless otherwise noted. Typical values are at TA = +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C. PARAMETER SYMBOL TEST CONDITIONS MIN (Note 6) TYP MAX (Note 6) UNITS INPUT SUPPLY VIN Undervoltage Lockout Threshold VUVLO Rising 2.5 2.85 V Hysteresis 50 100 mV Quiescent Supply Current IVDD SYNC = VDD, EN1 = EN2 = VDD, FS = 1MHz, no load at the output 15 40 mA FS = 2.5MHz, no load at the output 30 70 mA Shutdown Supply Current ISD VDD = 6V, EN1 = EN2 = SGND 8 20 µA OUTPUT REGULATION FB1, FB2 Regulation Voltage VFB 0.790 0.8 0.810 V FB1, FB2 Bias Current IFB VFB = 0.75V 0.1 µA Load Regulation SYNC = VDD, output load from 0A to 6A 2 mV/A Line Regulation VIN = VO + 0.5V to 6V (minimal 2.85V) 0.1 %/V Soft-start Ramp Time Cycle SS = VDD 1.5 ms Soft-start Charging Current ISS 4 5 6 µA COMPENSATION Error Amplifier Trans-Conductance SS = VDD 20 µA/V SS with Capacitor 100 µA/V Trans-resistance RT 0.180 0.2 0.220 Ω Trans-resistance Matching RT_match -0.03 +0.03 Ω OVERCURRENT PROTECTION Dynamic Current Limit ON-time tOCON 17 Clock pulses Dynamic Current Limit OFF-time tOCOFF 8 SS cycle Positive Peak Overcurrent Limit Ipoc1 4.1 4.8 5.5 A Ipoc2 4.1 4.8 5.5 A Negative Peak Overcurrent Limit Inoc1 -3.5 -2.5 -1.5 A Inoc2 -3.5 -2.5 -1.5 AFN6853 Rev 3.00 Page 8 of 26 August 17, 2012

Page 10

ISL8036, ISL8036ALX1, LX2 P-Channel MOSFET ON-Resistance VIN = 6V, IO = 200mA 50 75 mΩ VIN = 2.7V, IO = 200mA 70 100 mΩ N-Channel MOSFET ON-Resistance VIN = 6V, IO = 200mA 50 75 mΩ VIN = 2.7V, IO = 200mA 70 100 mΩ LX_ Maximum Duty Cycle 100 % PWM Switching Frequency FS ISL8036 0.88 1.1 1.32 MHz ISL8036A 2.15 2.5 2.85 MHz Synchronization Frequency Range FSYNC ISL8036 (Note 7) 2.64 6 MHz Channel 1 to Channel 2 Phase Shift Rising edge to rising edge timing 180 ° LX Minimum On Time SYNC = High (PWM mode) 140 ns Soft Discharge Resistance RDIS EN = LOW 80 100 120 Ω LX Leakage Current Pulled up to 6V 0.1 1 µA PG1, PG2 Output Low Voltage Sinking 1mA, VFB = 0.7V 0.3 V PG Pin Leakage Current PG = VIN = 6V 0.01 0.1 µA Internal PGOOD Low Rising Threshold Percentage of nominal regulation voltage 89.5 92 94.5 % Internal PGOOD Low Falling Threshold Percentage of nominal regulation voltage 85 88 91 % Delay Time (Rising Edge) Time from VOUT_ reached regulation 1 ms Internal PGOOD Delay Time (Falling Edge) 7 10 µs EN1, EN2, SYNC Logic Input Low 0.4 V Logic Input High 1.5 V SYNC Logic Input Leakage Current ISYNC Pulled up to 6V 0.1 1 µA Enable Logic Input Leakage Current IEN Pulled up to 6V 0.1 1 µA Thermal Shutdown 150 °C Thermal Shutdown Hysteresis 25 °C NOTES: 6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. 7. The operational frequency per switching channel will be half of the SYNC frequency. Electrical Specifications Unless otherwise noted, the typical specifications are measured at the following conditions: TA = -40°C to +85°C, VIN = 3.6V, EN1 = EN2 = VDD, L = 1.5µH, C1 = C2 = C4 = 2x22µF, IOUT1 = IOUT2 = 0A to 3A, unless otherwise noted. Typical values are at TA = +25°C. Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN (Note 6) TYP MAX (Note 6) UNITSFN6853 Rev 3.00 Page 9 of 26 August 17, 2012

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