Datasheet > CAT4137TD-T3

CAT4137TD-T3

更新时间： 2024-02-23 08:59:06

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器转换器接口集成电路光电二极管升压转换器
页数	文件大小	规格书
16页	243K
描述
CMOS Boost Converter - White LED Driver

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技术参数
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CAT4137TD-T3 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSOT
包装说明：	VSSOP, TSOP5/6,.11,37	针数：	5
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	28 weeks 6 days
风险等级：	5.25	接口集成电路类型：	LED DISPLAY DRIVER
JESD-30 代码：	R-PDSO-G5	JESD-609代码：	e3
长度：	2.9 mm	复用显示功能：	NO
功能数量：	1	区段数：	3
端子数量：	5	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：	VSSOP	封装等效代码：	TSOP5/6,.11,37
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	电源：	3.6 V
认证状态：	Not Qualified	座面最大高度：	1 mm
子类别：	Display Drivers	最大供电电压：	5.5 V
最小供电电压：	2.2 V	标称供电电压：	3.6 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Tin (Sn)
端子形式：	GULL WING	端子节距：	0.95 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	1.6 mm

CAT4137TD-T3 数据手册

CAT4137

CMOS Boost Converter – White LED Driver

FEATURES

DESCRIPTION

Drives up to 5 White LEDs from 3V

Power Efficiency up to 87%

The CAT4137 is a DC/DC step-up converter that

delivers a regulated output current. Operation at a

constant switching frequency of 1MHz allows the

device to be used with small value external ceramic

capacitors and inductor.

Low Quiescent Ground Current 0.1mA

Adjustable Output Current (up to 30mA)

High Frequency 1MHz Operation

“Zero” current shutdown mode

Operates down to 2V (from two AA batteries)

Soft start power-up

The device drives a string of white LEDs connected

in series and provides the regulated current to control

the LEDs with inherent uniform brightness and

matching. An external resistor R1 sets the output

current and allows up to 30mA current to be

supported over a wide range of input supply voltages

from 2.2V to 5.5V, making the device ideal for

battery-powered applications.

Open LED low power mode

Automatic shutdown at 1.9V (UVLO)

Thermal shutdown protection

Thin SOT23 5-Lead (1mm max height)

LED dimming can be done by using a DC voltage, a

logic signal, or a pulse width modulation (PWM)

signal. The shutdown control pin allows the device to

be placed in power-down mode with “zero” quiescent

current.

APPLICATIONS

LCD Backlighting

Cellular Phones

Handheld Devices

Digital Cameras

In addition to thermal protection and overload current

limiting, the device also enters a very low power

operating mode during “Open LED” fault conditions.

The device is housed in a low profile (1mm max

height) 5-lead thin SOT23 package for space critical

applications.

ORDERING INFORMATION

Quantity

per Reel

Package

Marking

Part Number

Package

CAT4137TD-T3

TSOT23-5⁽¹⁾

3000

CAT4137TD-GT3 TSOT23-5⁽²⁾

For Ordering Information details see page 15.

Notes: (1) Matte-Tin Plated Finish (RoHS-compliant).

(2) NiPdAu Plated Finish (RoHS-compliant).

PIN CONFIGURATION

TYPICAL APPLICATION CIRCUIT

TSOT-23 5-Lead

1mm max height

OUT

2.2 to

5.5V

22µH

0.22µF

VIN

1µF

VIN

GND

CAT4137

SHDN

OFF ON

SHDN

GND

= 300mV

15Ω

(Top View)

L: Murata LQH32CN220

D: Central CMDSH2-3 (rated 30V)

Characteristics subject to change without notice

Doc. No. MD-5012 Rev. C

12 3 4 5 6 7...16

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