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LM3642TLESLASHNOPB中文资料德州仪器数据手册PDF规格书

LM3642TLESLASHNOPB
厂商型号

LM3642TLESLASHNOPB

功能描述

LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source

文件大小

530.01 Kbytes

页面数量

30

生产厂商 Texas Instruments
企业简称

TI2德州仪器

中文名称

美国德州仪器公司官网

原厂标识
数据手册

下载地址一下载地址二到原厂下载

更新时间

2025-7-5 23:00:00

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LM3642TLESLASHNOPB规格书详情

1 Features

1• 1.5-A High-Side Current Source for Single LED

• > 85% Efficiency in Torch Mode (at 100 mA) and

Flash Mode (at 1 A to 1.5 A)

• Accurate Programmable Flash LED Current from

93 mA to 1.5 A

• Accurate Programmable Torch LED Currents:

– 48.4 mA to 375 mA

– 24 mA to 187 mA (LT option)

• Small Solution Size: < 20 mm2

• Soft-Start Operation for Battery Protection

• Hardware Strobe Enable

• Synchronization Input for RF Power Amplifier

Pulse Events

• V IN Flash Monitor Optimization

• 400-kHz I2C-Compatible Interface

• 0.5-mm Pitch, 9-Bump DSBGA

2 Applications

Camera Phone LED Flash

3 Description

The LM3642 is a 4-MHz fixed-frequency synchronous

boost converter plus 1.5-A constant current driver for a high-current white LED. The high-side current

source allows for grounded cathode LED operation

providing Flash current up to 1.5 A. An adaptive

regulation method ensures the current source

remains in regulation and maximizes efficiency.

The LM3642 is controlled via an I2C-compatible

interface. Features include a hardware flash enable (STROBE) allowing a logic input to trigger the flash

pulse as well as a TX input which forces the flash

pulse into a low-current Torch Mode, allowing for

synchronization to RF power amplifier events or other

high-current conditions.

The 4-MHz switching frequency, overvoltage

protection and adjustable current limit settings allow

the use of tiny, low-profile inductors and (10-μF)

ceramic capacitors. The device is available in a small

9-bump DSBGA package and operates over the

−40°C to 85°C temperature range.

供应商 型号 品牌 批号 封装 库存 备注 价格
TI(德州仪器)
24+
NA/
7350
现货供应,当天可交货!免费送样,原厂技术支持!!!
询价
TI/德州仪器
24+
NA/
3255
优势代理渠道,原装正品,可全系列订货开增值税票
询价
NSC
2016+
BGA-9
3000
只做原装,假一罚十,公司可开17%增值税发票!
询价
TI(德州仪器)
2024+
N/A
500000
诚信服务,绝对原装原盘
询价
TI
23+
SMT
330
原装正品--可开增值税发票量大可订货
询价
TI
25+23+
23653
绝对原装全新正品现货/优势渠道商、原盘原包原盒
询价
TI
三年内
1983
只做原装正品
询价
TI
19+
DSBGA9
78479
原厂代理渠道,每一颗芯片都可追溯原厂;
询价
TI/NSC
21+
BGA
12588
原装正品
询价
TI(德州仪器)
23+
NA
20094
正纳10年以上分销经验原装进口正品做服务做口碑有支持
询价