The standard backlight and keypad lighting functions are enabled in a flexible way by either a charge pump or an inductive step-up converter. The ICs come with a sophisticated, autonomous pattern generator which produces cool event and fun light patterns. They also support new features such as ambient light sensing and daylight sensing.
Some of the products offer light-to-audio synchronization for use in phones with a media playing capability. The lighting management product portfolio meets the space, feature and cost requirements of all phones from entry-level products up to high-end smartphones.
| PartNo | Description | # of Current Sinks HV | CP Max. I (mA) | DC-DC Max. I (mA) | Max. Vled V | Features LDOs (#) | Flash Support | Package | Datasheet | Demo | Buy |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AS3490 | Highly efficient 2 to 6 LEDs backlight driver with PWM input | 3 | 100 | 7.8 | WL-CSP12 (1.7x1.4)-0.5 | ||||||
| AS3492 | Highly efficient 2 to 10 LEDs backlight driver with PWM input | 5 | 100 | 7.8 | WL-CSP12 (1.7x1.4)-0.5 | ||||||
| AS3675 | Flexible lighting management unit with charge pump, DC-DC, 13 current sinks | 3 | 300 | Controller | Controller | 1 | Yes | WL-CSP30 (3x2.5)-0.5 | |||
| AS3676 | Flexible lighting management unit with charge pump, DC-DC, 13 current sinks, ALS, DLS, audio sync and LDO | 3 | 300 | Controller | Controller | 1 | Yes | WL-CSP-30 (3x2.5)-0.5 | |||
| AS3677 | Flexible CMOS power and lighting management unit | 3 | 50 | 50 | 25 | 1 | WLCSP-25 (2.3x2.3)-0.4 | ||||
| AS3687XM | Flexible lighting management unit with charge pump, DC-DC, 7 current sinks, audio sync, ADC, LDO | 3 | 150 | Controller | Controller | Yes | WL-CSP20 (2x2.5)-0.5 | ||||
| AS3688 | Flexible lighting management, charge pump, DC-DC step-up, current sink, ADC, LDO | 2 | 900 | Controller | Controller | 2 | Yes | QFN-32 (5x5)-0.5 | |||
| AS3689 | Flexible lighting management, charge pump, DC-DC step-up, current sink, ADC, LDO | 3 | 400 | Controller | Controller | 1 | Yes | WL-CSP36 (3x3)-0.5 |