Datasheet > AS1103

AS1103

更新时间： 2024-01-20 17:18:42

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艾迈斯 - AMSCO		驱动器接口集成电路光电二极管
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描述
Low-Dropout LED Drivers

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AS1103 技术参数

是否无铅：	不含铅	生命周期：	Contact Manufacturer
Reach Compliance Code：	unknown	风险等级：	5.65
Base Number Matches：	1

AS1103 数据手册

austriamicrosystems

Data Sheet

AS1101, AS1102, AS1103, AS1104

Low-Dropout LED Drivers

1 General Description

2 Key Features

ꢀ

LED Drivers for Parallel-Connected LEDs

The AS110x family are LED drivers providing matched

current source bias for any color LED, including white

and blue. LED current is programmable using an exter-

nal resistor.

ꢀ

Ultra-Low Voltage Drop: Less Than 150mV (for Li-

ion Battery Support)

ꢀ

Analog and PWM Brightness Control

Up to 80mA per LED (AS1101)

The AS1101 LED currents are typical 460 x ISET (per

LED) at an LED cathode voltage of 150mV and typical

650 x ISET at an LED cathode voltage of 1V.

Up to 40mA per LED (AS1102, AS1103, AS1104)

No Electromagnetic Interference, No Switching-

Noise

The AS1102, AS1103, and AS1104 LED currents are

typical 230 x ISET (per LED) at an LED cathode voltage

of 150mV and typical 325 x ISET at an LED cathode volt-

age of 1V where ISET is the current through the external

resistor connected to the CTRL pin.

ꢀ

Current-Matching Requires No External Compo-

nents

Active-Low Shutdown Mode (AS1101, AS1102,

and AS1103)

The AS110x family can drive up to 4 high-current LEDs.

The AS1101, AS1102, and AS1104 incorporate a chip-

enable feature via pin ON. When the devices are dis-

abled, the supply current drops to less than 1µA.

ꢀ

Low Shutdown-Current: Less Than 1µA

SC70-6 Package (AS1101, AS1102, and AS1103)

MSOP-8 Package (AS1104)

Pin-to-Pin Compatible to FAN5611, FAN5612, and

FAN5614

The devices are pin-to-pin compatible to the FAN5611,

FAN5612 and FAN5614.

The AS1101, AS1102, and AS1103 are available in a

6-pin SC70 package; the AS1104 is available in a 8-pin

MSOP package.

3 Applications

The AS110x devices are ideal for LED displays and key-

board backlights, as well as lighting management units

for battery powered audio devices such as MP3 and CD

players, mobile and cordless phones, PDAs, portable

DVD players, and consumer electronics.

Figure 1. Typical Application Diagrams

2 Diode Control with On/Off

3 Diode Control with On/Off

VIN

I1/I2

I3/I4

ISET

VSET(3V)

ENABLE

CTRL

VSET(3V)

ENABLE

CTRL

AS1101

AS1102

GND

RSET

GND

4 Diode Control

4 Diode Control with On/Off

VIN

ISET

CTRL

VSET(3V)

ENABLE

VSET(3V)

CTRL

AS1103

AS1104

RSET

GND

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