The ISL97687 is a PWM controlled LED driver that supports 4 channels of LED current, for Monitor and TV LCD backlight applications. It is capable of driving 160mA per channel from a 9V to 32V input supply, with current sources rated up to 75V absolute maximum.
The ISL97687’s current sources achieve typical current matching to ±1%, while dynamically maintaining the minimum required VOUT necessary for regulation. This adaptive scheme compensates for the non-uniformity of forward voltage variance in the LED strings.
The ISL97687 can decode both an incoming PWM signal and an analog input voltage, for DC-to-PWM dimming applications. Modes include direct PWM and several modes where the PWM frequency is synthesized on chip at 10-bit resolution. This can be either free running, or synchronized with the frame rate to give both a frequency and a phase lock, minimizing panel to panel variation and display flicker. Phase shift is supported, reducing flicker and audio noise, as is multiplication of the incoming decoded analog and PWM values.
The ISL97687 has an advanced dynamic headroom control function, which monitors the highest LED forward voltage string, and regulates the output to the correct level to minimize power loss. This proprietary regulation scheme also allows for extremely linear PWM dimming from 0.02% to 100%. The LED current can also be switched between two current levels, giving support for 3D applications. The ISL97687 incorporates extensive protections of string open and short circuit detections, OVP, and OTP.
LED Driver IC 4 Output DC DC Controller Step-Up (Boost) Analog, PWM Dimming 160mA 28-SOIC
IC LED DRV CTRL PWM 160MA 28SOIC Product overview: ISL97687IBZ from Renesas Electronics Corporation is a LED Driver IC for LED lighting, display backlights, indicator control, automotive lighting, signage, and regulated current drive circuits. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 160MA. Search-friendly keywords include LED driver IC, constant current, lighting control, display backlight, 160MA, External/Internal LED Drivers. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 137-ISL97687IBZ can be used for catalog matching and distributor lookup.
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| Renesas Electronics Corporation | DigiKey | ERSAELECTRONICS PTE. LTD. | RS Components, Ltd. | Lingto Electronic Limited | VAST STOCK CO., LIMITED | Shenzhen Shengyu Electronics Technology Limited | |
|---|---|---|---|---|---|---|---|
| Product Category | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers | LED Drivers |
| Product Number | ISL97687IBZ | ISL97687IBZ-ND | 137-ISL97687IBZ | 2643648 | ISL97687IBZ | ISL97687IBZ | ISL97687IBZ |
| Product Name | 4-Channel LED Driver with Phase Shift Control and 10-Bit Dimming Resolution | LED Drivers | 160MA LED Driver IC | LED Drivers | PMIC - LED Drivers | LED Lighting Drivers | Integrated Circuits (ICs) - Power Management (PMIC) - LED Drivers |
| Form Factor | Intgrated Circuit (IC) | Intgrated Circuit (IC) | |||||
| Input Voltage | 9 to 32 volts | 9 to 32 volts | 9 to 32 volts | 9 to 32 volts | |||
| Output Voltage | 75 volts | ||||||
| Output Current | 160 milliamps | 160 milliamps | 160 milliamps | ||||
| Efficiency | 90 % |
