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 |
Environmental Documents
Type | Description | Language | ||
---|---|---|---|---|
Material Declaration Form | MDF_193270006_AS1111B-BWLT | English | ||
Material Declaration Form | MDF_193270002_AS1111A-BWLT | English | ||
Material Declaration Form | MDF_174970079_AS1111-BSOU | English | ||
Material Declaration Form | MDF_174970079_AS1111-BSOT | English | ||
Material Declaration Form | MDF_172460039_AS1111C-BDFT | English |
Notifications
Type | Description | Language | ||
---|---|---|---|---|
EoL Notification | AS1111_AS1312_AS1313_AS1345_AS1376 selected variants (issued 2016-Dec) | English |
Other Information
Type | Description | Language | ||
---|---|---|---|---|
Block Diagram | AS1111 Block Diagram | English |