Datasheet > FAN5645

FAN5645

更新时间： 2024-01-25 12:14:55

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
10页	346K
描述
Indicator LED Blinker with Single-Wire Interface

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FAN5645 数据手册

September 2007

FAN5645

Indicator LED Blinker with Single-Wire Interface

Features

Description

The FAN5645 is a flexible and compact solution for a

blinking LED indicator. The internal programmable blink

algorithm eliminates any need for continual system

processor control. This means longer battery life for the

hand-held system because the system processor is not

awakened from sleep mode just to blink an LED.

Records and plays back blink patterns

Single-wire digital control of LED blink rate and intensity

Resistor-programmable LED maximum current

High-side constant-current driver topology:

20mA maximum output

40mV typical dropout at 20mA

Very low dropout of 40mV allows driving an LED without

any inductors or switch capacitors.

33µA operating current

Standard 1.8V logic

Short-circuit protection

An external resistor sets the LED output current level.

LED blink rate and intensity is controlled by a simple

one-wire interface. In shutdown mode, the supply

current is reduced to 0.3µA (typical).

Thermal Shutdown Protection

Under-Voltage Lockout Protection

6-pin 3.0 x 3.0mm MLP package

The FAN5645 is available in 6-pin molded leadless

package (MLP).

Applications

Cell Phones, Smart-Phones

Pocket PCs, Bluetooth^®Headsets

PDA, DSC, PMP, and MP3 Players

Laptop Computers

Typical Application

2.7 to 5.5V

VIN

LED+

ISET

V_BAT

C_IN

0.1µF

GND

CTRL

GND

Control

Figure 1. Typical Application for the FAN5645

Ordering Information

Part Number

Package

MLP-6 3.0 x 3.0mm

Pb-Free Operating Temperature Range Packing Method

-40°C to 85°C Tape and Reel

FAN5645MPX

Bluetooth® is a registered trademark of Motorola, Inc.

FAN5645 • Rev. 1.0.0

www.fairchildsemi.com

12 3 4 5 6 7...10

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