Datasheet > CAT37TDI-GT3

CAT37TDI-GT3

更新时间： 2024-01-17 11:58:02

品牌	Logo	应用领域
安森美 - ONSEMI		驱动器转换器升压转换器
页数	文件大小	规格书
13页	181K
描述
CMOS White LED Driver Boost Converter

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技术参数
数据手册

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CAT37TDI-GT3 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	TSOT	包装说明：	VSSOP,
针数：	5	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.04	接口集成电路类型：	LED DISPLAY DRIVER
JESD-30 代码：	R-PDSO-G5	JESD-609代码：	e4
长度：	2.9 mm	湿度敏感等级：	1
复用显示功能：	NO	功能数量：	1
区段数：	1	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
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1 mm	最大供电电压：	7 V
最小供电电压：	2.5 V	标称供电电压：	3 V
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	NICKEL PALLADIUM GOLD
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	Base Number Matches：	1

CAT37TDI-GT3 数据手册

CAT37

CMOS White LED Driver Boost Converter

FEATURES

DESCRIPTION

Low quiescent ground current (0.5mA typical)

Power efficiency over 80%

The CAT37 is a DC/DC step up converter that delivers

a regulated output current. Operation at a constant

switching frequency of 1.2MHz allows the device to be

used with very small value external inductor and

ceramic capacitors.

Compatible pinout with LT1937

Adjustable output current (up to 40mA)

High frequency 1.2MHz operation

Input voltage operation down to 2.5V

Low resistance (0.5Ω) power switch

Drives up to 4 White LEDs in series

Shutdown current less than 1µA

The CAT37 is targeted to drive multiple white light-

emitting diodes (LEDs) connected in series and

provides the necessary regulated current to control

the brightness and the color purity. An external

resistor R1 controls the output current level. LED

currents of up to 40mA can be supported over a wide

range of input supply voltages from 2.5V to 7V,

making the device ideal for battery-powered

applications.

Load fault protection against open-circuits

Low value external components

Low profile (1mm) TSOT-23 5-lead package

A high voltage output stage allows up to 4 White LEDs

to be driven in series. Series drive provides inherent

current matching.

APPLICATION

Color LCD and keypad backlighting

Cellular phones

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

logic signal, or a pulse width modulation (PWM)

signal. The shutdown input pin allows the device to be

placed in power-down mode with “near zero”

quiescent current.

Handheld terminals

Digital cameras

PDAs/Games

In addition to overcurrent limiting protection, the

device also includes detection circuitry to ensure

protection against open-circuit load fault conditions.

Portable MP3 players

For Ordering Information details, see page 11.

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

height) 5-lead TSOT-23 package.

6.8µH

TYPICAL APPLICATION CIRCUIT

VIN

3V to 5V

1µF

VIN

CAT37

15mA

ON OFF

SHDN

C1: Taiyo Yuden JMK212BJ475

C2: Taiyo Yuden EMK212BJ105

L1: Panasonic ELJEA6R8 or equivalent

GND

6.34Ω

Figure 1. Driver for Four High-Brightness White LEDs

Characteristics subject to change without notice

Doc. No. MD-5005 Rev. V

12 3 4 5 6 7...13

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与CAT37TDI-GT3相关器件

型号	品牌	描述	获取价格	数据表
CAT37TDI-T3	TI	CMOS White LED Driver Boost Converter	获取价格
CAT37TDI-T3	ONSEMI	CMOS White LED Driver Boost Converter	获取价格
CAT37TDI-TE7	CATALYST	CMOS White LED Driver Boost Converter	获取价格
CAT37TDI-TE7	ONSEMI	IC LED DISPLAY DRIVER, PDSO5, 1 MM HEIGHT, LEAD FREE, SOT-23, 5 PIN, Display Driver	获取价格
CAT-4	MINI	Fixed Attenuator, 0MHz Min, 1500MHz Max, CASE FF55	获取价格
CAT-4+	MINI	Fixed Attenuator, 0MHz Min, 1500MHz Max, CASE FF55	获取价格

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