The LM3631 is a complete LCD backlight and bias power solution for mobile devices. This one-chip solution has an integrated high-efficiency backlight LED driver and positive/negative bias supplies for LCD drivers addressing the power requirements of high-definition LCDs. Integrated solution allows small solution size while still maintaining high performance.
Capable of driving up to 16 LEDs, the LM3631 is ideal for small- to medium-size displays. Two additional programmable LDO regulator outputs can be used to power display controller, LCD gamma reference, or any additional peripherals.
A high level of integration and programmability allows the LM3631 to address a variety of applications without the need for hardware changes. Voltage levels, backlight configuration, and power sequences are all configurable through I2C interface.
| Number of channels | 2 |
| Vin (min) (V) | 2.7 |
| Vin (max) (V) | 5 |
| Vout (min) (V) | 0 |
| Vout (max) (V) | 30 |
| Type | Inductive |
| Switching frequency (max) (kHz) | 1100 |
| Duty cycle (max) (%) | 94 |
| LED current per channel (mA) | 25 |
| Peak efficiency (%) | 90 |
| Topology | Boost, Current Sink, LDO, Multi-Channel |
| Features | Adjustable Switch Frequency, CABC, Enable/Shutdown, I2C control, OVP, PWM control, Power good, Soft Start |
| Operating temperature range (°C) | -40 to 85 |
| Rating | Catalog |
| DSBGA (YFF) | 24 | 4.67999999999999928 mm² 1.8 x 2.5999999999999996 |
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