The MAX16807/MAX16808 are integrated, high-efficiency white or RGB LED drivers. They are designed for LCD backlighting and other LED lighting applications with multiple strings of LEDs. The MAX16807/MAX16808’s current-mode PWM controller regulates the necessary voltage to the LED array. Depending on the input voltage and LED voltage range, it can be used with boost or buck-boost (SEPIC) topologies. The MAX16807/MAX16808 feature an 8V to 26.5V input volt- age range. A wide range of adjustable frequency (20kHz to 1MHz) allows design optimization for efficien- cy and minimum board space. The MAX16807/MAX16808 LED drivers include eight open-drain, constant-current-sinking LED driver outputs rated for 36V continuous operation. The LED current- control circuitry achieves ±3% current matching among strings and enables paralleling of outputs for LED string currents higher than 55mA. The output-enable pin is used for simultaneous PWM dimming of all output chan- nels. Dimming frequency range is 50Hz to 30kHz and dimming ratio is up to 5000:1. The constant-current out- puts are single resistor programmable and the LED cur- rent can be adjusted up to 55mA per output channel. The MAX16807/MAX16808 operate either in stand-alone mode or with a microcontroller (µC) using an industry- standard, 4-wire serial interface. The MAX16808 includes circuitry that automatically detects open-circuit LEDs. The MAX16807/MAX16808 include overtemperature protection, operate over the entire voltage range, and feature low standby current.
The MAX16807 and MAX16808 are integrated 8‑channel LED driver ICs that support switch‑mode boost and SEPIC topologies. They regulate constant current for white or RGB LEDs and can be used for LCD backlighting, automotive displays, and general LED lighting.
Key features include an input voltage range of 8 V to 26.5 V, continuous output voltage rating of 36 V, a wide dimming ratio up to 5000:1, and per‑channel current up to 55 mA. The devices operate from –40 °C to +125 °C and are offered in a 28‑pin TSSOP exposed‑paddle package.
| Output voltage rating | 36 V continuous |
|---|---|
| Dimming ratio | Up to 5000:1 |
| Maximum per‑channel current | 55 mA |
| Operating temperature range | -40 °C to +125 °C |
| Package type | 28‑Pin TSSOP (exposed paddle) |
The drivers provide a dimming ratio of up to 5000 : 1.
They are offered in a 28‑pin TSSOP exposed‑paddle package.
They operate from –40 °C to +125 °C.