Datasheet > AAT1236IRN-T1

AAT1236IRN-T1

更新时间： 2024-01-19 00:16:41

品牌	Logo	应用领域
AAT		驱动器接口集成电路
页数	文件大小	规格书
24页	1012K
描述
High Efficiency White LED Drivers for Backlight and Keypad

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技术参数
数据手册

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AAT1236IRN-T1 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.68
Base Number Matches：	1

AAT1236IRN-T1 数据手册

AAT1236

High Efficiency White LED Drivers

for Backlight and Keypad

Pin Descriptions

Pin #

Symbol

Function

VIN

Input supply for the converter. Connect a 2.2µF or larger ceramic capacitor from VIN to GND.

Boost output over voltage detect pin. Use resistor divider to set the circuit's external over-

voltage protection. See Applications Information for details.

Enable pin.

Backlight current sink 1. Connect the cathode of the last LED in the string to B1.

Backlight current sink 2. Connect the cathode of the last LED in the string to B2.

LED current set resistor. A 22.6kΩ resistor from RSET to AGND sets the maximum LED cur-

rent in A1-A3 and B1-B2 to 20mA.

RSET

Input bias supply for the internal circuitry. Connect IN to VIN directly at the AAT1236.

Power ground for the boost converter. Connect GND to AGND at a single point as close to

the AAT1236 as practical.

GND

Boost converter switching node. A 2.2µH inductor, connected between SW and LIN, sets the

boost converter's switching frequency.

SDA

SCL

AGND

I²C interface serial data line.

I²C interface serial clock line.

Ground pin. Connect AGND to GND at a single point as close to the AAT1236 as practical.

Auxiliary current sink 3. Connect the cathode of the last LED in the string to A3.

Auxiliary current sink 2. Connect the cathode of the last LED in the string to A2.

Auxiliary current sink 1. Connect the cathode of the last LED in the string to A1.

Switched power input. Connect LIN to the external power inductor.

Exposed paddle (bottom). Connected internally to SW. Connect to SW or leave floating.

LIN

Pin Configuration

TDFN34-16

(Top View)

LIN

AGND

SCL

SDA

VIN

RSET

GND

1236.2007.02.1.1

123 4 5 6 7...24

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