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ISL97636IRZ-TK

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ISL97636IRZ-TK

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Part Number ISL97636IRZ-TK
Manufacturer Renesas Electronics America
Description IC LED DRVR RGLTR DIM 35MA 24QFN
Datasheet ISL97636IRZ-TK Datasheet
Package 24-VFQFN Exposed Pad
In Stock 441 piece(s)
Unit Price $ 3.1360 *
Lead Time Can Ship Immediately
Estimated Delivery Time Aug 7 - Aug 12 (Choose Expedited Shipping)
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Part Number # ISL97636IRZ-TK (PMIC - LED Drivers) is manufactured by Renesas Electronics America and distributed by Heisener. Being one of the leading electronics distributors, we carry many kinds of electronic components from some of the world’s top class manufacturers. Their quality is guaranteed by its stringent quality control to meet all required standards.

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ISL97636IRZ-TK Specifications

ManufacturerRenesas Electronics America
CategoryIntegrated Circuits (ICs) - PMIC - LED Drivers
Datasheet ISL97636IRZ-TKDatasheet
Package24-VFQFN Exposed Pad
Series-
TypeDC DC Regulator
TopologyStep-Up (Boost)
Internal Switch(s)Yes
Number of Outputs8
Voltage - Supply (Min)6V
Voltage - Supply (Max)24V
Voltage - Output34.5V
Current - Output / Channel35mA
Frequency1.2MHz
DimmingPWM
ApplicationsBacklight
Operating Temperature-40°C ~ 85°C (TA)
Mounting TypeSurface Mount
Package / Case24-VFQFN Exposed Pad
Supplier Device Package24-QFN-EP (4x4)

ISL97636IRZ-TK Datasheet

Page 1

Page 2

FN6570 Rev 0.00 May 9, 2008 ISL97636 8-Channel LED Driver DATASHEETThe ISL97636 is an integrated power LED driver that controls 8 channels of LED current for LCD backlight applications. The ISL97636 is capable of driving typically 72 (8x9) pieces of 3.5V/30mA or 80 (8x10) pieces of 3.2V/20mA LEDs. The ISL97636’s contains 8 channels of voltage controlled current sources with typical currents matching of ±1%, which compensate for the non-uniformity effect of forward voltages variance in the LED stacks. To minimize the voltage headroom and power loss in the typical multi-strings operation, the ISL97636 features a dynamic headroom control that monitors the highest LED forward voltage string and uses its feedback signal for output regulation. The LED brightness can be pulse width modulated with an applied PWM signal from DC to audio noise free 20kHz. The ISL97636 features extensive protection functions that include string open and short circuit detections, OVP, OTP, thermal shutdown and an optional input overcurrent protection with master fault disconnect switch. Available in the 24 Ld 4mmx4mm QFN, the ISL97636 operates from -40°C to +85°C with input voltage ranges from 6V to 24V for high LEDs count applications. Features • 8 Channels • 6V to 24V Input • 34.5V Output Max • Drive Maximally 72 (3.5V/30mA each) or 80 (3.2V/20mA each) LEDs • Current Matching ±1% Typ • Dynamic Headroom Control • PWM Signal up to 20kHz Dimming • Protections - String Open Circuit Detection - String Short Circuit Detection with Selectable Thresholds - Over-Temperature Protection - Overvoltage Protection - Optional Input Overcurrent Protection w/Disconnect SW • 1.2MHz Switching Frequency • 24 Ld 4mmx4mm QFN Package • Pb-Free (RoHS compliant) Applications • Notebook Displays LED Backlighting • LCD Monitor LED Backlighting • Automotive Displays LED Backlighting • Automotive or Traffic Lighting Ordering Information PART NUMBER (Note) PART MARKING PACKAGE (Pb-Free) PKG. DWG. # ISL97636IRZ* 976 36IRZ 24 Ld 4x4 QFN L24.4x4D *Add “-T” or “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications NOTE: 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.FN6570 Rev 0.00 Page 1 of 18 May 9, 2008

Page 3

ISL97636Typical Application Circuit 7 VBL+ = 6V TO 24V PWMI/EN COMP VIN FAULT OVP PGND RSET VOUT = 34.5V, 30mA PER STRING VDC LX IIN0 IIN3 IIN2 IIN4 IIN5 23 24 6 11 9 10 12 17 13 14 15 16 1921 22 LX 20 PGND 18 GND5 ISL97636 IIN1 8IIN6 IIN7FN6570 Rev 0.00 Page 2 of 18 May 9, 2008

Page 4

ISL97636Block Diagram FIGURE 1. ISL97636 BLOCK DIAGRAM 34.5V, 30mA PER STRING (8 x 9 = 72 LEDS) GENERATOR VIN COMP + - + - IIN0 IIN7 VBL+ = 6V TO 24V FET DRIVER REG LX ISL97636 RAMP COMP IMAX ILIMIT PWM/OC/SC HIGHEST VF STRING DETECT VDC SENSOR PGND FAULT + - GND REFERENCE GM AMP LOGIC OVP OSC AND  = 0 OC, SC DETECT FAULT DETECT FAULT DETECT TEMP FAULT/DETECT PWMI/EN RSET OC, SC DETECT PWM GENERATOR O/P SHORT FAULT DETECTFN6570 Rev 0.00 Page 3 of 18 May 9, 2008

Page 5

ISL97636Absolute Maximum Ratings (TA = +25°C) Thermal Information VIN, FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 24V VDC, COMP, RSET, EN/PWM . . . . . . . . . . . . . . . . . . . -0.3V to 6.5V OVP, IIN0 - IIN7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 28V LX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 36V PGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V Above voltage ratings are all with respect to GND pin Operating Conditions Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Thermal Resistance (Typical, Notes 1, 2) JA (°C/W) JC (°C/W) 24 Ld QFN . . . . . . . . . . . . . . . . . . . . . . 39 2 Thermal Characterization (Typical, Note 3) PSIJT (°C/W) 24 Ld QFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ~0.7 Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA 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: 1. 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. 2. For JC, the “case temp” location is the center of the exposed metal pad on the package underside assumed under ideal case temperature. 3. PSIJT is the junction-to-top thermal resistance. If the package top temperature can be measured, with this rating then the die junction temperature can be estimated more accurately than the JC and JC thermal resistance ratings. 4. Limits established by characterization and are not production tested. Electrical Specifications All specifications below are tested at TA = -40°C to +85°C; VIN = 12V, EN = 5V, RSET = 36.6k; 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. PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT GENERAL VIN Backlight Supply Voltage  9 LEDs per channel (3.5V/30mA type) 6 24 V IVIN_STBY VIN Shutdown Current 5 µA VOUT Output Voltage 34.5 V Vuvlo Undervoltage Lockout Threshold 2.45 2.8 V Vuvlo_hys Undervoltage Lockout Hysteresis 300 mV SS Soft-start 1 ms PWM GENERATOR EN/PWM EN/PWM Voltage Range 2.7 5.5 V ENmin Minimum Enable Signal 40 µs tMAX_PWM_OFF Maximum PWMI Off Time Before Shutdown EN/PWMI toggles 28 ms REGULATOR VDC LDO Output Voltage VIN > 6V 5.0 5.5 V IVDC_STBY Standby Current EN/PWM = 0V 20 µA IVDC Active Current EN/PWM = 5V 10 mA VLDO VDC LDO Dropout Voltage VIN > 5.5V, 30mA 30 200 mV BOOST SWILimit Boost FET Current Limit TA = +25°C 2.3 3.2 A TA = -40°C, +85°C 2.2 A rDS(ON) Internal Boost Switch ON-Resistance 130 260 mFN6570 Rev 0.00 Page 4 of 18 May 9, 2008

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ISL97636Eff_peak Peak Efficiency VIN = 18V, 72 LEDs, 20mA each, L = 8.2µH with DCR 106m TA = +25°C 91 % VIN = 12V, 72 LEDs, 20mA each, L = 8.2µH with DCR 106m TA = +25°C 90 % VIN = 6V, 72 LEDs, 20mA each, L = 8.2µH with DCR 106m TA = +25°C 86 % IOUT/VIN Line Regulation 0.1 % Dmax Boost Maximum Duty Cycle 82 % Dmin Boost Minimum Duty Cycle 7 % fS Switching Frequency 1.0 1.2 1.3 MHz ILX_leakage LX Leakage Current VLX = 36V, EN = 0 10 µA REFERENCE Imatch Channel-to-Channel Current Matching IOUT = 30mA -3.5 ±1 +3.5 % IACC Current Accuracy ±3 % FAULT DETECTION VSC Short Circuit Threshold PWM Dimming = 100% 7.8 8 8.8 V Vtemp_acc Over-Temperature Threshold Accuracy 5 °C VOVPlo Overvoltage Limit on OVP Pin 1.17 1.2 1.23 V OVPhys OVP Hysteresis 20 mV OVPfault OVP Short Detection Fault Level 300 mV CURRENT SOURCES Vheadroom Dominant Channel Current Source Headroom at IIN Pin ILED = 20mA TA = +25°C 100 mV VRSET Voltage at RSET Pin RSET = 36.6k 680 700 720 mV ILEDmax Maximum LED Current Per Channel RSET = 20.9k 35 mA FAULT PIN Ifault Fault Pull-down Current VIN = 12V 10 18 30 µA Vfault FAULT Clamp Voltage with Respect to VIN VIN = 12, VIN - Vfault 7.5 V IlxStartup LX Start-up Current VDC = 5.2V 1 2.7 7 mA Electrical Specifications All specifications below are tested at TA = -40°C to +85°C; VIN = 12V, EN = 5V, RSET = 36.6k; 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. (Continued) PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNITFN6570 Rev 0.00 Page 5 of 18 May 9, 2008

Page 7

ISL97636Typical Performance Curves FIGURE 2. EFFICIENCY, L = 8.2µH WITH DCR = 106m, CO = 4x4.7µF/50V FIGURE 3. EFFICIENCY, L = 10µH WITH DCR = 129m, CO = 4x4.7µF/50V FIGURE 4. 3 EFFICIENCY, L = 10µH WITH DCR = 500m, 1mm, CO = 4x4.7µF/50V FIGURE 5. CURRENT REGULATION FIGURE 6. CHANNEL-TO-CHANNEL CURRENT MATCHING FIGURE 7. CURRENT MATCHING vs DUTY CYCLE vs DIMMING FREQUENCY 66 68 70 72 74 76 78 80 82 84 86 88 90 92 0 20 40 60 80 100 120 140 160 180 IO (mA) E F F IC IE N C Y ( % ) L = 8.2µH IHLP-2525BD-01 DCR = 106m ISAT = 3A 9S8P - 6V 9S6P - 6V 7S8P - 6V 7S6P - 6V 9S6P - 12V 7S8P - 18V 9S6P - 18V 7 8 - 6 9S8P - 12V 7S6P - 12V 7S8P - 12V 7S6P - 18V 9S8P - 18V 66 68 70 72 74 76 78 80 82 84 86 88 90 92 0 20 40 60 80 100 120 140 160 180 E F F IC IE N C Y ( % ) IO (mA) 7S8P - 6V 7S6P - 6V 9S6P - 12V 7 8 - 6 9S8P - 12V 7S6P - 12V 7S8P - 12V 9S8P - 18V 9S8P - 6V 9S6P - 6V 9S6P - 18V 7S8P - 18V 7S6P - 18V L = 10µH IHLP-2525BD-01 DCR = 129m ISAT = 2.5A 66 68 70 72 74 76 78 80 82 84 86 88 90 92 0 20 40 60 80 100 120 140 160 180 IO (mA) E F F IC IE N C Y ( % ) 9S8P - 6V 9S6P - 6V 7S8P - 6V 7S6P - 6V 9S6P - 12V 9S6P - 18V 7 8 - 6 9S8P - 12V 7S6P - 12V 7S8P - 12V 7S8P - 18V 9S8P - 18V 7S6P - 18V L = 10µH DCR = ~500m <1mm HEIGHT -1.2 -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 4 6 8 10 12 14 16 18 20 22 24 26 VIN (V) C U R R E N T V A R IA T IO N ( % ) 20mA -2.0 -1.5 -1.0 -0.5 0.0 0.5 1.0 1.5 2.0 CH 0 CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CHANNELS C U R R E N T M A T C H IN G ( % ) 6V/1mA 6V/20mA 12V/1mA 12V/20mA 0.5 0.6 0.7 0.8 0.9 1.0 0 10 20 30 40 50 60 70 80 90 100 PWM DUTY CYCLE (%) C U R R E N T M A T C H IN G ( % ) VIN = 12V 10kHz 1kHz 100kHz 200kHz 20kHz FN6570 Rev 0.00 Page 6 of 18 May 9, 2008

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ISL97636FIGURE 8. PWM DIMMING LINEARITY FIGURE 9. LX, VIIN, IL AND IO AT PWM DIMMING (54 LEDS, 20mA, VIN = 12V) FIGURE 10. IL AT 50% PWM DIMMING (54LEDs, 20mA, VIN = 12V, L = 8.2µH) FIGURE 11. IL ZOOM IN AT PWM DIMMING ZOOM IN (54 LEDs, 20mA, VIN = 12V, L = 8.2µH) FIGURE 12. ILED AT 50% PWM DIMMING (54 LEDs, 20mA, VIN = 12V) FIGURE 13. LX AT 50% PWM DIMMING (54 LEDs, 20mA, VIN = 12V) Typical Performance Curves (Continued) 0 20 40 60 80 100 120 140 160 180 0 10 20 30 40 50 60 70 80 90 100 PWM DUTY CYCLE (%) T O TA L O U T P U T C U R R E N T ( m A ) 8 CHANNELS 9 LEDS PER CHANNEL VIN = 18V VIN = 6V VIN = 12VFN6570 Rev 0.00 Page 7 of 18 May 9, 2008

Page 9

ISL97636FIGURE 14. LX ZOOM IN AT 50% DIMMING (54 LEDs, 20mA, VIN = 12V) FIGURE 15. RIPPLE VOLTAGE (54 LEDs, VIN = 12V, 20mA EACH, COUT = 4x4.7µF/50V) FIGURE 16. RIPPLE VOLTAGE ZOOM IN (54 LEDs, VIN = 12V, 20mA EACH, COUT = 4x4.7µF/50V) Typical Performance Curves (Continued)FN6570 Rev 0.00 Page 8 of 18 May 9, 2008

Page 10

ISL97636Pinout ISL97636 (24 LD QFN) TOP VIEW V D C V IN C O M P F A U LT L X L X II N 7 II N 6 II N 5 II N 4 R S E T II N 3 GND GND FPWM VLEVEL GND PWMI/EN PGND PGND OVP IIN0 IIN1 IIN2 1 2 3 4 5 6 18 17 16 15 14 13 24 23 22 21 20 19 7 8 9 10 11 12 Pin Descriptions (I = Input, O = Output, S = Supply) PIN NAME TYPE DESCRIPTION 1, 2 GND S Analog GND 3 FPWM - Not used. Leave floating and connect anything will have no effect on operation. 4 VLEVEL - Not used. Leave floating and connect anything will have no effect on operation. 5 GND S Analog GND and LED power return 6 EN/PWMI I Dual Functions: Enable Pin and PWM brightness control pin. DO NOT leave EN/PWMI floating. The device needs 40µs for initial power-up Enable, then this pin can be applied with a PWM signal with off time no longer than 28ms. 7 IIN7 I Input 7 to current source, FB, and monitoring 8 IIN6 I Input 6 to current source, FB, and monitoring 9 IIN5 I Input 5 to current source, FB, and monitoring 10 IIN4 I Input 4 to current source, FB, and monitoring 11 RSET I Resistor connection for setting LED current, (see Equation 1 for calculating the ILEDpeak) 12 IIN3 I Input 3 to current source, FB, and monitoring 13 IIN2 I Input 2 to current source, FB, and monitoring 14 IIN1 I Input 1 to current source, FB, and monitoring 15 IIN0 I Input 0 to current source, FB, and monitoring 16 OVP I Overvoltage protection input 17 PGND S Power ground (LX Power return) 18 PGND S Power ground (LX Power return) 19 LX I Input to boost switch 20 LX I Input to boost switch 21 FAULT O Fault disconnect switch 22 COMP O Boost compensation pin 23 VIN S Input voltage for the device and LED power 24 VDC S De-couple capacitor for internally generated supply rail. If 2.7V < VBL+ < 5.5V, apply VDC directly with a supply voltage of 2.7V to 5.5VFN6570 Rev 0.00 Page 9 of 18 May 9, 2008

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Veda*****llips

July 16, 2020

received with well packed and good parts, every piece of the ISL97636IRZ-TK works well.

Caro*****Palan

July 15, 2020

Fast shipping, work as designed. Made some circuitry with these components and they work well.

Jenn*****ence

July 13, 2020

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

Mitche*****agopalan

July 12, 2020

Very friendly online shopping site - easy to navigate and it keeps vital datasheet for each product online purchase.

Avia*****Rege

June 25, 2020

It fit exactly in the same location as the original. Works great and no problem. Good purchase.

Avia*****Kala

June 24, 2020

I was able to make my list of needed parts and use suggested products. The big plus is the fact they show inventory quantity.

Tri*****Dara

June 20, 2020

Your prices are low and your website is customer-use friendly.

Carm*****Soman

June 3, 2020

The order process is easy and user friendly, very helpful customer service, always fast shipping.

Ivy*****rkins

June 2, 2020

Fast delivery, good quality, 100% satisfacted

Abe*****uerta

May 31, 2020

Very supportive of my small orders, but very glad easy to work with. Hard to see how it could be any more efficient!

ISL97636IRZ-TK Guarantees

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