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AAT3124ITO-20-T1

更新时间： 2024-01-05 08:21:22

品牌	Logo	应用领域
ANALOGICTECH		驱动程序和接口接口集成电路泵
页数	文件大小	规格书
19页	1563K
描述
High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications

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AAT3124ITO-20-T1 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
包装说明：	TSOP-14	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.82	Is Samacsys：	N
数据输入模式：	SERIAL	接口集成电路类型：	LED DISPLAY DRIVER
JESD-30 代码：	R-PDSO-C14	长度：	3.05 mm
功能数量：	1	区段数：	6
端子数量：	14	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSOC	封装等效代码：	TSSOJ14,.11,16
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	3.5 V
认证状态：	Not Qualified	座面最大高度：	1.1 mm
子类别：	Display Drivers	最大供电电压：	5.5 V
最小供电电压：	2.7 V	标称供电电压：	3.5 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子形式：	C BEND	端子节距：	0.4 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	2.4 mm	Base Number Matches：	1

AAT3124ITO-20-T1 数据手册

PRODUCT DATASHEET

AAT3123/23A/24

ChargePump

High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications

General Description

Features

The AAT3123/23A/24 is a low noise, constant frequency

charge pump DC/DC converter that uses a dual mode

load switch (1X) and fractional (1.5X) conversion to

maximize efficiency for white LED applications. The

device can be used to produce current levels up to 20mA

to drive up to six LEDs from a 2.7V to 5.5V input.

Outputs may be operated individually or paralleled for

driving higher-current LEDs. A low external parts count

(two 1μF flying capacitors and two small 1μF capacitors

at V_INand OUT) make the AAT3123/23A/24 ideally suited

for small battery-powered applications.

• V_INRange: 2.7V to 5.5V

• Dual Mode 1X and 1.5X Charge Pump for Maximum

Efficiency

• Drives Low-V_Fand High-V_FType LEDs

• Up to Six 20mA Outputs (AAT3124)

• Up to Four 20mA Outputs (AAT3123/23A)

• 32-Position Logarithmic Scale with Digital Control

• Simple Serial Control (S²Cwire) Interface

• Low Noise Constant Frequency Operation

• 1MHz Switching Frequency

• Small Application Circuit

• Regulated Output Current

• Automatic Soft Start

• No Inductors

• I_Q<1μA in Shutdown

• Temperature Range: -40°C to +85°C

• 12-Pin TSOPJW Package (AAT3123/23A)

• 16-Pin 4x4mm QFN and 14-Pin TSOPJW Packages

(AAT3124)

AnalogicTech’s Simple Serial Control™ (S²Cwire™) inter-

face is used to enable, disable, and set the LED drive

current with a 32-level logarithmic scale LED brightness

control. The AAT3123/23A/24 has a thermal manage-

ment system to protect the device in the event of a

short-circuit condition at the output pin. Built-in soft-

start circuitry prevents excessive inrush current during

start-up. A high charge pump switching frequency

enables the use of very small external capacitors. A low-

current shutdown feature disconnects the load from V_IN

and reduces quiescent current to less than 1μA. The

device also integrates a test current/auto-disable feature

for each channel. The AAT3123/23A is available in a very

small, Pb-free 12-pin TSOPJW package. The six output

AAT3124 is available in the Pb-free 16-pin 4x4mm QFN

and 14-pin TSOPJW packages.

Applications

• Color (RGB) Lighting

• Programmable Current Source

• White LED Backlighting

• White Photo Flash for DSCs

Typical Application

VIN

C1+

1μF

C1-

C2+

VOUT

V_BATTERY

C_IN

C_OUT

1μF

AAT3124

C2-

EN/SET

GND

w w w . a n a l o g i c t e c h . c o m

3123.2008.03.1.5

12 3 4 5 6 7...19

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