ISL78100ARZ Intersil, ISL78100ARZ Datasheet
ISL78100ARZ
Specifications of ISL78100ARZ
Related parts for ISL78100ARZ
ISL78100ARZ Summary of contents
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... Ld 4x4 QFN ISL78100ARZ-TK* 781 00ARZ 20 Ld 4x4 QFN Tape and Reel ISL78100ARZ-T* 781 00ARZ 20 Ld 4x4 QFN 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 ...
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... Feedback Undervoltage Fault UV FAULT 2 ISL78100 Thermal Information = +25°C) Thermal Resistance 20 Ld QFN Package (Notes 1, 2 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +135°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = 12V 5V -40°C to +105°C unless otherwise specified ...
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Electrical Specifications BAT PARAMETER DESCRIPTION FB Feedback Overvoltage Fault OV FAULT f Switching Frequency SW f Maximum Recommended PWM DIMMING Dimming Frequency t Load Switch Transition Time SWITCH RLS Load Switch Driver Impedance Low DRIVERL RLS Load ...
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Typical Performance Curves 100 8 LEDs I = 380mA 95 LEDpeak 99%@100Hz 90 50%@1kHz 85 80 50%@100Hz 99%@1kHz 75 10%@1kHz 50%@10kHz (V) IN FIGURE 1. 8 LEDs EFFICIENCY vs INPUT VOLTAGE vs ...
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Typical Performance Curves 10 5 LEDs 380mA LEDpeak 6 4 10% @ 100Hz 2 0 99% @ 10kHz -2 10% @ 10kHz -4 -6 99% @ 100Hz -8 - (V) IN FIGURE ...
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Typical Performance Curves 41 5 LEDs I = 380mA LEDpeak 40 DUTY CYCLE = 10% 39 10% @ 100Hz 38 37 10% @ 10kHz (V) IN FIGURE 13. 5 LEDs LINE REGULATION ...
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Typical Performance Curves 8 LEDs V = 16V IN PWM = 100Hz FIGURE 19. 50% PWM DIMMING AT 100Hz 8 LEDs V = 12V IN PWM = 1kHz FIGURE 21. 10% PWM DIMMING AT 1kHz TRANSIENT RESPONSE WHEN LOAD DYNAMICALLY ...
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Typical Performance Curves FIGURE 25. OVP AND RESET Typical Boost Mode Application Diagram V BAT V DC 0.1µF TEMP SENSOR FIGURE 27. TYPICAL BOOST MODE APPLICATION CIRCUIT 8 ISL78100 (Continued) VOUT 8LEDs V I LED VIN VHI ...
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Pin Descriptions PIN NAME 1 VDC Internally regulated 5V supply, tracks V external supply VHI Power FET gate drive supply. Can be biased with external supply OVP Overvoltage monitor input; tie to VOUT for ...
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Functional Block Diagram 2.7V TO 16V GND START-UP V CHARGE PUMP START V DC POR REF EN O/P LIGHT CONTROL LEVEL MODE EN/PWM MODE CONTROL BUCK/ BOOSTN HALT VBAT FAULT VIN FAULT CONTROL HALT LDO AND REF AND TIMER V ...
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Theory of Operation General Description The ISL78100 is a flexible, highly integrated high-power LED driver consisting of a PWM switching controller and integrated 36V NDMOS power FET. The device can drive series high-power LED's at currents up ...
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FIGURE 31. OPERATION WITH ENL CONTROLLED FET FIGURE 32. OPERATION WITH NO ENL CONTROLLED FET Bias Current Dimming Current in the LED load is determined by the value of the feedback resistor and the target feedback regulation voltage as ...
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VBAT 10µH VBAT FAULT L1 VIN ISL78100 SWD1 SWD2 ZOVP FB SWS1 SWS2 FIGURE 33. EXTERNAL OVP CIRCUIT Over-Temperature Shutdown An internal sense circuit disables PWM switching if the die temperature exceeds +135°C. Switching is re-enabled when the temperature falls ...
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Rectifier Diode A high speed rectifier diode is necessary to prevent excessive voltage overshoot, especially in the boost configuration. Low forward voltage and reverse leakage current will minimize losses, making Schottky diodes the preferred choice. Similarly to the inductor, a ...
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TABLE 4. BOOST MODE COMPENSATION 12V OPERATION VFB I OUT 50mV 50mA Electrolytic 100mV 100mA Electrolytic 200mV 350mA Electrolytic 200mV 1A Electrolytic CERAMIC CAPACITORS Many ceramic capacitors have strong voltage and temperature coefficients, which reduces effective capacitance as the applied ...
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Boost Mode Application Diagram V BAT Boost Mode with Overcurrent Fault and LED Temperature Protections Application Diagram V BAT TEMP SENSOR V FIGURE 36. BOOST MODE APPLICATION WITH OVERCURRENT FAULT PROTECTION AND LED TEMPERATURE PROTECTION 16 ISL78100 VIN VHI FAULT ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...
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Automotive Applications The LED load and ISL78100 may be protected against load dumps and other electrical faults in automotive supplies with a minor addition to the standard application schematic: • A reverse transient automotive-rated protection power Schottky must be added ...
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Package Outline Drawing L20.4x4C 20 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 0, 11/06 4.00 6 PIN 1 INDEX AREA 0.15 (4X) TOP VIEW ( 3. 8 TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 19 ISL78100 16X ...