Datasheet > AS1102-T

AS1102-T

更新时间： 2024-01-04 08:11:07

品牌	Logo	应用领域
艾迈斯 - AMSCO		驱动器
页数	文件大小	规格书
13页	481K
描述
Low-Dropout LED Drivers

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AS1102-T 技术参数

生命周期：	Active	Reach Compliance Code：	unknown
风险等级：	5.59	Base Number Matches：	1

AS1102-T 数据手册

Data Sheet

AS1101, AS1102, AS1103, AS1104

Low-Dropout LED Drivers

1 General Description

2 Key Features

ꢀ

LED Drivers for Parallel-Connected LEDs

The AS1101/AS1102/AS1103/AS1104 are 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, and the LED current is program-

mable using an external resistor (RSET).

ꢀ

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 460 x ISET (per LED, typ)

at an LED cathode voltage (VSAT) of 150mV and 650 x

ISET (typ) at a VSAT of 1V, where ISET is the current

through RSET connected to pin CTRL.

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

No Electromagnetic Interference, No Switching-

Noise

The AS1102, AS1103, and AS1104 LED currents are

230 x ISET (per LED, typ) at a VSAT of 150mV and 325 x

ISET (typ) at a VSAT of 1V.

ꢀ

Current-Matching Requires No External Compo-

nents

Active-Low Shutdown Mode (AS1101, AS1102,

and AS1103)

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)

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 Enable

3 Diode Control with Enable

VIN

I1/I2 VSAT

I3/I4

I1 VSAT

ISET

VSET

(3V)

VSET

(3V)

CTRL

RSET

AS1101

AS1102

ENABLE

GND

4 Diode Control

4 Diode Control with Enable

VIN

I1 VSAT I2

AS1103

GND

I1 VSAT I2

ISET

VSET

(3V)

ISET

VSET

(3V)

CTRL

RSET

AS1104

CTRL

RSET

ENABLE

GND

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