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ISL78214ARZ

hot ISL78214ARZ

ISL78214ARZ

For Reference Only

Part Number ISL78214ARZ
Manufacturer Intersil
Description IC REG BUCK ADJ 4A SYNC 16QFN
Datasheet ISL78214ARZ Datasheet
Package 16-VQFN Exposed Pad
In Stock 39460 piece(s)
Unit Price $ 9.04 *
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ISL78214ARZ

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ISL78214ARZ Specifications

ManufacturerIntersil
CategoryIntegrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators
Datasheet ISL78214ARZ Datasheet
Package16-VQFN Exposed Pad
SeriesAutomotive, AEC-Q100
FunctionStep-Down
Output ConfigurationPositive
TopologyBuck
Output TypeAdjustable
Number of Outputs1
Voltage - Input (Min)2.8V
Voltage - Input (Max)5.5V
Voltage - Output (Min/Fixed)0.8V
Voltage - Output (Max)5.5V
Current - Output4A
Frequency - Switching1MHz
Synchronous RectifierYes
Operating Temperature-40°C ~ 105°C (TA)
Mounting TypeSurface Mount
Package / Case16-VQFN Exposed Pad
Supplier Device Package16-QFN (4x4)

ISL78214ARZ Datasheet

Page 1

Page 2

FN7551 Rev 2.00 May 12, 2015 ISL78214 4A Low Quiescent Current High Efficiency Synchronous Buck Regulator DATASHEETThe ISL78214 is a high efficiency, monolithic, synchronous step-down DC/DC converter that can deliver up to 4A continuous output current from a 2.8V to 5.5V input supply. It uses a current control architecture to deliver very low duty cycle operation at high frequency with fast transient response and excellent loop stability. The ISL78214 integrates a pair of low ON-resistance P-Channel and N-Channel internal MOSFETs to maximize efficiency and minimize external component count. The 100% duty-cycle operation allows less than 400mV dropout voltage at 4A output current. High 1MHz Pulse-width Modulation (PWM) switching frequency, that can be synchronization up to 4MHz with an external clock, allows the use of small external components and SYNC input enables multiple ICs to synchronize out of phase to reduce ripple and eliminate beat frequencies. The ISL78214 can be configured for discontinuous or forced continuous operation at light load. Forced continuous operation reduces noise and RF interference while discontinuous mode provides high efficiency by reducing switching losses at light loads. Fault protection is provided by internal hiccup mode current limiting during short circuit and overcurrent conditions, an output overvoltage comparator and over-temperature monitor circuit. A power-good output voltage monitor indicates when the output is in regulation. The ISL78214 is offered in a space saving 4x4 QFN lead free package with exposed pad lead frames for low thermal. The ISL78214 offers a 1ms Power-good (PG) timer at power-up. When shutdown, ISL78214 discharges the output capacitor. Other features include internal soft-start, internal compensation, overcurrent protection and thermal shutdown. The ISL78214 is offered in a 16 Ld 4mmx4mm QFN package with 1mm maximum height. The complete converter occupies less than 0.4in2 area. The ISL78214 is AEC-Q100 qualified. The ISL78214 is rated for the automotive temperature range -40°C to +105°C. Features • High efficiency synchronous buck regulator with up to 97% efficiency • Power-good (PG) output with a 1ms delay • 2.8V to 5.5V supply voltage • 2% output accuracy over-temperature/load/line • 4A output current • Pin compatible to ISL78213 • Start-up with prebiased output • Internal soft-start - 1ms • Soft-stop output discharge during disable • 35µA quiescent supply current in PFM mode • Selectable forced PWM mode and PFM mode • External synchronization up to 4MHz • Less than 1µA logic controlled shutdown current • 100% maximum duty cycle • Internal current mode compensation • Peak current limiting and hiccup mode short circuit protection • Over-temperature protection • Small 16 Ld 4mmx4mm QFN • Pb-free (RoHS compliant) • AEC-Q100 qualified Applications • Automotive power • DC/DC POL modules • µC/µP, FPGA and DSP power Related Literature • AN1366, “ISL8014AEVAL2Z: 4A Low Quiescent Current 1MHz High Efficiency Synchronous Buck Regulator”FN7551 Rev 2.00 Page 1 of 15 May 12, 2015

Page 3

ISL78214Pin Configuration ISL78214 (16 LD QFN) TOP VIEW Ordering Information PART NUMBER (Notes 1, 2, 3) PART MARKING TEMP. RANGE (°C) PACKAGE (RoHS Compliant) PKG. DWG. # ISL78214ARZ 782 14ARZ -40 to +105 16 Ld 4x4 QFN L16.4x4 NOTES: 1. Add “-T” suffix for tape and reel. 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 ISL78214. For more information on MSL please see techbrief TB363. 1 3 4 15 VIN VIN VDD SYNCH N C L X L X N C 16 14 13 2 12 10 9 11 65 7 8 PGND PGND SGND SGND E N N C P G V F B Refer to Application Note AN1366 for more layout suggestions. PD Pin Descriptions PIN NUMBER PIN NAME DESCRIPTION 1, 2 VIN Input supply voltage. Connect a 10µF ceramic capacitor to power ground. 3 VDD Input supply voltage for the analog circuitry. Connect to VIN pin. 5 EN Regulator enable pin. Enable the output when driven to high. Shut down the chip and discharge output capacitor when driven to low. Do not leave this pin floating. 7 PG 1ms timer output. At power-up or EN HI, this output is a 1ms delayed power-good signal for the output voltage. 4 SYNCH Mode Selection pin. Connect to logic high or input voltage VDD for PWM mode. Connect to logic low or ground for PFM mode. Connect to an external function generator for synchronization with the negative edge trigger. Do not leave this pin floating. 14, 15 LX Switching node connection. Connect to one terminal of the inductor. 11, 12 PGND Power ground 9, 10 SGND Signal ground 8 VFB Buck regulator output feedback. Connect to the output through a resistor divider for adjustable output voltage. For 0.8V output voltage, connect this pin to the output. 6, 13, 16 NC No connect PD Exposed Pad The exposed pad must be connected to the SGND pin for proper electrical performance. Place as much vias as possible under the pad connecting to SGND plane for optimal thermal performance.FN7551 Rev 2.00 Page 2 of 15 May 12, 2015

Page 4

ISL78214Typical Application Block Diagram FIGURE 1. TYPICAL APPLICATION DIAGRAM L 1.5µH LX PGND VFB VIN EN PG SYNCH INPUT 2.8V TO 5.5V OUTPUT 1.8V C1 2 x 22µF ISL78214 C2 R2 124k R3 100k 2 x 22µF VDD SGND C3 47pF R1 100k FIGURE 2. FUNCTIONAL BLOCK DIAGRAM LX + CSA + + OCP 1.4V 0.5VSKIP + + + Slope COMP SLOPE Soft START SOFT 0.8V EAMP COMP PWM/PFM LOGIC CONTROLLER PROTECTION DRIVER VFB + 0.736V PG SYNCH SHUTDOWN VIN PGND OSCILLATOR ZERO-CROSS SENSING BANDGAP SCP + 0.2V EN SHUTDOWN 1ms DELAY 27pF 390k SGND 3pF 6k - - - - - - - - FN7551 Rev 2.00 Page 3 of 15 May 12, 2015

Page 5

ISL78214Absolute Maximum Ratings (Reference to GND) Thermal Information VIN, VDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V (DC) or 7V (20ms) EN, SYNCH, PG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to VIN + 0.3V LX . . . . . . . . . . . . . . . . -1.5V (100ns)/-0.3V (DC) to 6.5V (DC) or 7V (20ms) VFB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 2.8V ESD Ratings Human Body Model (Tested per AEC-Q100-002) . . . . . . . . . . . . . . 3000V Charged Device Model (Tested per AEC-Q100-011). . . . . . . . . . . . 2000V Machine Model (Tested per AEC-Q100-003) . . . . . . . . . . . . . . . . . . . 250V Latch-up (Tested per AEC-Q100-004, ClassII, Level A). . . . . . . . . . . 100mA Thermal Resistance (Typical) JA (°C/W) JC (°C/W) 16 Ld QFN Package (Notes 4, 5) . . . . . . . . 39 3 Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . .-55°C to +125°C Storage Temperature Range. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB493 Recommended Operating Conditions VIN Supply Voltage Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.8V to 5.5V Load Current Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0A to 4A Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . . . . -40°C to +105°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. JC, “case temperature” location is at the center of the exposed metal pad on the package underside. Electrical Specifications Unless otherwise noted, all parameter limits are established over the recommended operating conditions and the typical specification are measured at the following conditions unless otherwise noted: TA = -40°C to +105°C, VIN = 3.6V, EN = VDD. Typical values are at TA = +25°C. Boldface limits apply across the operating temperature range, -40°C to +105°C. PARAMETER SYMBOL TEST CONDITIONS MIN (Note 7) TYP MAX (Note 7) UNIT INPUT SUPPLY VDD Undervoltage Lockout Threshold VUVLO Rising, no load - 2.6 2.8 V Falling, no load 2.15 2.35 - V Quiescent Supply Current IVIN SYNCH = GND, no load at the output - 35 - µA SYNCH = GND, no load at the output and no switches switching - 30 45 µA SYNCH = VDD, FS = 1MHz, no load at the output - 6.5 10 mA Shutdown Supply Current ISD VIN = 5.5V, EN = low, TA = +85°C - 0.1 4 µA VIN = 5.5V, EN = low, TA = +105°C - 0.1 10 µA OUTPUT REGULATION Reference Voltage VREF 0.790 0.8 0.810 V VFB Bias Current IVFB VFB = 0.75V - 0.1 - µA Line Regulation VIN = VO + 0.5V to 5.5V (minimal 2.8V) - 0.2 - %/V Soft-start Ramp Time Cycle - 1 - ms OVERCURRENT PROTECTION Current Limit Blanking Time tOCON - 17 - Clock pulses Overcurrent and Auto Restart Period tOCOFF - 4 - SS cycle Switch Current Limit ILIMIT (Note 6) 4.9 6.0 7.1 A Peak Skip Limit ISKIP (Note 6) - 1.3 - A COMPENSATION Error Amplifier Transconductance - 20 - µA/V Transresistance RT 0.17 0.20 0.23 ΩFN7551 Rev 2.00 Page 4 of 15 May 12, 2015

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ISL78214LX P-Channel MOSFET ON-resistance VIN = 5V, IO = 200mA - 50 75 mΩ VIN = 2.8V, IO = 200mA - 70 100 mΩ N-Channel MOSFET ON-resistance VIN = 5V, IO = 200mA - 50 75 mΩ VIN = 2.8V, IO = 200mA - 70 100 mΩ LX Maximum Duty Cycle - 100 -  PWM Switching Frequency fS 0.80 1.0 1.20 MHz LX Minimum On-time SYNCH = High - - 140 ns PG Output Low Voltage Sinking 1mA - - 0.3 V Delay Time (Rising Edge) 0.65 1 1.35 ms PG Pin Leakage Current PG = VIN = 3.6V - 0.01 2 µA PGOOD Rising Threshold Percentage of regulation voltage 89 92 95 % PGOOD Falling Threshold Percentage of regulation voltage 85 88 91 % PGOOD Delay Time (Falling Edge) - 15 - µs EN, SYNCH Logic Input Low - - 0.4 V Logic Input High 1.4 - - V Synch Logic Input Leakage Current ISYNCH Pulled up to 5.5V - 0.1 4 µA Enable Logic Input Leakage Current IEN - 0.1 4 µA Thermal Shutdown - 140 - °C Thermal Shutdown Hysteresis - 25 - °C NOTES: 6. Limits established by characterization and are not production tested. 7. 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. Electrical Specifications Unless otherwise noted, all parameter limits are established over the recommended operating conditions and the typical specification are measured at the following conditions unless otherwise noted: TA = -40°C to +105°C, VIN = 3.6V, EN = VDD. Typical values are at TA = +25°C. Boldface limits apply across the operating temperature range, -40°C to +105°C. (Continued) PARAMETER SYMBOL TEST CONDITIONS MIN (Note 7) TYP MAX (Note 7) UNITFN7551 Rev 2.00 Page 5 of 15 May 12, 2015

Page 7

ISL78214Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN, SYNCH = 0V, L = 1.5µH, C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 4A. FIGURE 3. EFFICIENCY vs LOAD (1MHz 3.3 VIN PWM) FIGURE 4. EFFICIENCY vs LOAD (1MHz 3.3 VIN PFM) FIGURE 5. EFFICIENCY vs LOAD (1MHz 5VIN PWM) FIGURE 6. EFFICIENCY vs LOAD (1MHz 5VIN PFM) FIGURE 7. POWER DISSIPATION vs LOAD (1MHz, VOUT = 1.8V) FIGURE 8. POWER DISSIPATION WITH NO LOAD vs VIN (PWM VOUT = 1.8V) 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) E F F IC IE N C Y ( % ) 2.5VOUT-PWM 1.8VOUT-PWM 1.5VOUT-PWM 1.2VOUT-PWM 40 50 60 70 80 90 100 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 OUTPUT LOAD (A) E F F IC IE N C Y ( % ) 2.5VOUT-PFM 1.8VOUT-PFM 1.5VOUT-PFM 1.2VOUT-PFM 40 50 60 70 80 90 100 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) E F F IC IE N C Y ( % ) 2.5VOUT-PWM 1.8VOUT-PWM 1.5VOUT-PWM 1.2VOUT-PWM 3.3VOUT-PWM 40 50 60 70 80 90 100 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 OUTPUT LOAD (A) E F F IC IE N C Y ( % ) 2.5VOUT-PFM 1.8VOUT-PFM 1.5VOUT-PFM 1.2VOUT-PFM 3.3VOUT-PFM 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) P O W E R D IS S IP A T IO N ( W ) 5VIN-PWM 3.3VIN-PFM 3.3VIN-PWM 5VIN-PFM 0 25 50 75 100 125 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) P O W E R D IS S IP A T IO N ( m W ) FN7551 Rev 2.00 Page 6 of 15 May 12, 2015

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ISL78214FIGURE 9. POWER DISSIPATION WITH NO LOAD vs VIN (PFM VOUT = 1.8V) FIGURE 10. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.2V) FIGURE 11. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.5V) FIGURE 12. VOUT REGULATION vs LOAD (1MHz, VOUT = 1.8V) FIGURE 13. VOUT REGULATION vs LOAD (1MHz, VOUT = 2.5V) FIGURE 14. VOUT REGULATION vs LOAD (1MHz, VOUT = 3.3V) Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN, SYNCH = 0V, L = 1.5µH, C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 4A. (Continued) 0 0.05 0.10 0.15 0.20 0.25 P O W E R D IS S IP A T IO N ( m W ) 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) O U T P U T V O LT A G E ( V ) 5VIN-PWM 5VIN-PFM 3.3VIN-PWM3.3VIN-PFM 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) O U T P U T V O LT A G E ( V ) 5VIN-PWM 5VIN-PFM 3.3VIN-PWM 3.3VIN-PFM 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) O U T P U T V O LT A G E ( V ) 5VIN-PWM 5VIN-PFM 3.3VIN-PWM 3.3VIN-PFM 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) O U T P U T V O LT A G E ( V ) 5VIN-PWM 5VIN-PFM 3.3VIN-PWM 3.3VIN-PFM 2.44 2.45 2.46 2.47 2.48 2.49 2.50 2.51 2.52 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.36 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 OUTPUT LOAD (A) O U T P U T V O LT A G E ( V ) 5VIN-PWM 5VIN-PFM 4.5VIN-PWM 4.5VIN-PFMFN7551 Rev 2.00 Page 7 of 15 May 12, 2015

Page 9

ISL78214FIGURE 15. OUTPUT VOLTAGE REGULATION vs VIN (PWM VOUT = 1.8) FIGURE 16. OUTPUT VOLTAGE REGULATION vs VIN (PFM VOUT = 1.8V) FIGURE 17. STEADY STATE OPERATION AT NO LOAD (PWM) FIGURE 18. STEADY STATE OPERATION AT NO LOAD (PFM) FIGURE 19. STEADY STATE OPERATION WITH FULL LOAD FIGURE 20. MODE TRANSITION CCM TO DCM Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN, SYNCH = 0V, L = 1.5µH, C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 4A. (Continued) 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 O U T P U T V O LT A G E ( V ) 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) 4A LOAD PWM 0A LOAD PWM 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 O U T P U T V O LT A G E ( V ) 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) 4A LOAD 0A LOAD LX 2V/DIV VOUT RIPPLE 20mV/DIV IL 0.5A/DIV LX 2V/DIV VOUT RIPPLE 20mV/DIV IL 0.5A/DIV LX 2V/DIV VOUT RIPPLE 20mV/DIV IL 2A/DIV LX 2V/DIV VOUT RIPPLE 50mV/DIV IL 1A/DIVFN7551 Rev 2.00 Page 8 of 15 May 12, 2015

Page 10

ISL78214FIGURE 21. MODE TRANSITION DCM TO CCM FIGURE 22. LOAD TRANSIENT (PWM) FIGURE 23. LOAD TRANSIENT (PFM) FIGURE 24. SOFT-START WITH NO LOAD (PWM) FIGURE 25. SOFT-START AT NO LOAD (PFM) FIGURE 26. SOFT-START WITH PREBIASED 1V Typical Operating Performance Unless otherwise noted, operating conditions are: TA = +25°C, VVIN = 2.5V to 5.5V, EN = VIN, SYNCH = 0V, L = 1.5µH, C1 = 2x22µF, C2 = 2x22µF, IOUT = 0A to 4A. (Continued) LX 2V/DIV VOUT RIPPLE 50mV/DIV IL 1A/DIV VOUT RIPPLE 50mV/DIV IL 1A/DIV LX 2V/DIV VOUT RIPPLE 50mV/DIV IL 1A/DIV EN 5V/DIV VOUT 0.5V/DIV IL 1A/DIV PG 5V/DIV EN 5V/DIV VOUT 0.5V/DIV IL 1A/DIV PG 5V/DIV EN 5V/DIV VOUT 0.5V/DIV IL 1A/DIV PG 5V/DIVFN7551 Rev 2.00 Page 9 of 15 May 12, 2015

ISL78214ARZ Reviews

Average User Rating
5 / 5 (88)
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Jaylee*****ataraman

January 15, 2020

2nd time buying these - quite good. Very fast shipping

Krist*****arghese

December 27, 2019

Great deal, immediate response and very quick delivery!

Myl*****uri

December 11, 2019

The items I want are often in stock and available in small quantities.

Gret*****ndey

November 18, 2019

Fast shipping. Got it in few dayss from Hong Kong

Nikol*****arwal

September 8, 2019

Received the parts, and all parts are in tight packaging without any problems, professional seller.

Magno*****ridges

August 21, 2019

It gives you a good quality product, with a great variety.. I will for sure order this set again when i start to run low.

Dall*****erry

July 14, 2019

The fastest shipping I've seen yet

Dami*****ennedy

April 30, 2019

Various selection and thoughtful services! Prices are competitive as well. Thank you!

Kar*****Booth

April 22, 2019

I have always get a fast response from Heisener with my orders. As a small business owner I greatly appreciate that I can order as little as 1 item as opposed to other companies who require you place a larger minimum order.

Alfr*****Garcia

March 2, 2019

Awesome!!! great prices, easy to order and great service, thank you!

ISL78214ARZ Guarantees

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hotISL78214ARZ ISL54500IHZ-T Intersil, IC SWITCH SPDT SOT23-6, SOT-23-6, Automotive, AEC-Q100 View

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