Datasheet > FAN5776

FAN5776

更新时间： 2024-10-03 01:20:15

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		/
页数	文件大小	规格书
15页	2063K
描述
Synchronous Boost and Series / Parallel 10-LED Driver

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FAN5776 数据手册

October 2013

FAN5776

Synchronous Boost and Series / Parallel 10-LED Driver

Features

Description

The FAN5776 is a synchronous, constant-current LED driver

capable of efficiently driving up to ten LEDs in a five-string,

two-series LEDs per string configuration. Optimized for small

form-factor applications, the 1.8 MHz switching frequency

allows the use of tiny chip inductors and capacitors.

. Synchronous Current-Mode Boost Converter

. Drives up to 10 LEDs at 25 mA Each in a Configuration of

5 Strings of 2 LEDs in Series

. 5 LED Outputs: High-Side Current Sources

For safety, the device features integrated over-voltage, short-

circuit, and thermal shutdown protections. In addition, input

under-voltage lockout protection is triggered if the battery

voltage is too low.

. Two Default Groups of 3x2-LED Channels and 2x2-LED

Channels with Individual Enable and PWM Dimming

Control to Support Various Lighting Applications, such as:

o Backlighting of Dual-LCD Displays, LCD Display Plus

Keypad Illumination

The FAN5776 is comprised of low-dropout, high-side current

sources, enabling a high efficiency delivery of power from the

battery to the LEDs. The LED current control is established

with a series RSET resistor, which is connected between the

internal voltage reference on the chip and ground.

. Boost PFM Mode Maximizes Efficiency Under Light Loads

. 2.3 V to 5.5 V Input Voltage Range

. 1.8 MHz Switching Frequency

During operation, FAN5776 holds the boost regulator’s voltage

on C_OUTduring the off cycle of the PWM dimming, which helps

minimize audible noise.

. Input Under-Voltage Lockout (UVLO)

. Output Over-Voltage Protection (OVP)

. Short-Circuit and Thermal Shutdown (TSD) Protection

. 12-Bump, 0.4 mm Pitch, 1.42 x 1.66 x 0.50 mm WLCSP

Applications

The FAN5776 is available in a very low profile, small-form-

factors 1.42 x 1.66 x 0.50 mm, 12-bump WLCSP package that

is “green” and RoHS compliant.

. Mid-and Large-Size LCD Modules

. Cellular Mobile Handsets, Smart Phones

. Smartbooks, Netbooks, MIDs

. Pocket PCs

. WLAN DC-DC Converter Modules

. PDA, DSC, PMP, and MP3 Players

Ordering Information

Temperature

Part Number

Package

Packing

Range

12-Bump, Wafer-Level Chip-Scale Package (WLCSP)

1.42 x 1.66 x 0.50 mm, 0.40 mm Pitch

FAN5776UCX

-40 to 85°C

Tape and Reel

www.fairchildsemi.com

FAN5776 • Rev. 1.1.0

12 3 4 5 6 7...15

中文翻译

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与FAN5776相关器件

型号	品牌	获取价格	描述	数据表
FAN5776UCX	FAIRCHILD	获取价格	Synchronous Boost and Series / Parallel 10-LED Driver
FAN5776UCX	ONSEMI	获取价格	LED 驱动器，同步升压和串联/并联
FAN5902	FAIRCHILD	获取价格	800mA Buck Converter for 3G RFPAs
FAN5902MPX	FAIRCHILD	获取价格	800mA Buck Converter for 3G RFPAs
FAN5902UCX	FAIRCHILD	获取价格	800mA Buck Converter for 3G RFPAs
FAN5903	FAIRCHILD	获取价格	Buck Converter with Bypass Mode for 3 G / 3.5 G / 4 G PAs
FAN5903BUCX	FAIRCHILD	获取价格	Switching Regulator
FAN5903BUCX	ONSEMI	获取价格	降压转换器，带旁通模式，用于 3G/3.5G 和 4G PA
FAN5903UCX	FAIRCHILD	获取价格	Buck Converter with Bypass Mode for 3 G / 3.5 G / 4 G PAs
FAN5903UCX	ONSEMI	获取价格	降压转换器，带旁通模式，用于 3G/3.5G 和 4G PA

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