AS1111 LED Driver IC
Low-dropout LED drivers
Features
- Up to 4 channel 40mA driver
- 150mV headroom to operate
- Analog and PWM brightness control
- No switching noise
- Less external components needed
Benefits
- High brightness LEDs
- Excellent efficiency & battery lifetime
- High resolution dimming possible
- Suitable for EMF sensitive envireonment
- Small PCB area
Product parameters
| Outputs [#] | 2 - 4 |
|---|---|
| LED Current per Output [mA] | 40 - 80 |
| Features | Simple drive |
| Error Detection | |
| Read-Back | |
| LED-to-LED Matching [%] | 3 |
| Supply Voltage [V] | 0.15 to 3.6 |
| Package | WL-CSP-6, 0.4mm pitch (AS1111A & AS1111B), MLPD-8, 0.5mm pitch (AS1111C) |
General Description
The AS1111x family are high efficient LED drivers designed to match current source bias for any color LED, including white and blue. The devices can drive up to 4 high-current LEDs, the LED current can be adjusted using an external resistor (RSET) and dimmed with an external PWM signal via pin EN. It only requires 150mV headroom voltage to operate and when the devices are disabled, the supply current drops down to less than 1µA.
This product suits for the following applications:
- Portable MP3 and DVD players
- Mobile and cordless phones
- PDAs
- Consumer electronic
Tools
| Title | Category | Headline | Buy |
|---|---|---|---|
| AS1111AEvalKit | Application Board | Evaluation Kit for AS1111A | |
| AS1111CEvalKit | Application Board | Evaluation Kit for AS1111C |
Technical Documents
| Type | Description | Language | |
|---|---|---|---|
| Datasheet | Document version 1-06 | English |
Other Information
| Type | Description | Language | |
|---|---|---|---|
| Block Diagram | AS1111 Block Diagram | English | |
| Other Product Document | AS1111AEvalKit Image | English | |
| Other Product Document | AS1111CEvalKit Image | English |
Related Boards
Evaluation Kit for AS1111A
AS1111AEvalKit
The AS1111A is a LED driver in a 6-pin WL-CSP package with 0.4mm pitch, designed to match current source bias for any color LED, including white and blue. The device can drive up to 2 high-current LEDs, and the LED current is programmable up to 80mA using an external resistor (RSET). The evaluation kit has to be external supplied and allows an evaluation of the already mounted LEDs as well as any other LEDs via 2-pin connectors.
Evaluation Kit for AS1111C
AS1111CEvalKit
The AS1111C is a LED driver in a 8-pin MLPD package with 0.5mm pitch, designed to match current source bias for any color LED, including white and blue. The device can drive up to 4 high-current LEDs, and the LED current is programmable up to 40mA using an external resistor (RSET). The evaluation kit has to external supplied and allows an evaluation of the already mounted LEDs as well as any other LEDs via 2-pin connectors.