参数资料
型号: FAN5340UCX
厂商: Fairchild Semiconductor
文件页数: 1/12页
文件大小: 0K
描述: IC LED DVR SYNC BOOST 8-WLCSP
标准包装: 3,000
恒定电流:
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 通用
频率: 1MHz ~ 1.4MHz
电源电压: 2.7 V ~ 4.8 V
输出电压: 6.2 V ~ 16 V
安装类型: 表面贴装
封装/外壳: 8-WLCSP
供应商设备封装: 8-WLCSP
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
April 2010
FAN5340
Synchronous Constant-Current Series Boost LED Driver
with PWM Brightness Control and Integrated Load
Disconnect
Features
Synchronous Current-Mode Boost Converter
Up to 500mW Output Power
Supports 2, 3, or 4 LEDs in Series
2.7V to 4.8V Input Voltage Range
1.2MHz Fixed Switching Frequency
1mA Maximum Quiescent Current
Soft-Start Capability
Input Under-Voltage Lockout (UVLO)
Output Over-Voltage Protection (OVP)
Short-Circuit Detection
Thermal Shutdown (TSD) Protection
8-Lead 3.00 x 3.00mm MLP
Description
The FAN5340 is a synchronous constant-current LED driver
capable of efficiently delivering up to 500mW to a string of up
to four LEDs in series. Optimized for small form-factor
applications, the 1.2MHz fixed switching frequency allows
the use of chip inductors and capacitors.
For safety, the device features integrated short-circuit
detection plus over-voltage and thermal shutdown
protections. In addition, input under-voltage lockout
protection is triggered if the battery voltage is low.
Brightness (dimming) control is implemented by applying a
PWM signal of 300Hz to 1kHz on the EN pin. During
shutdown, the FAN5340 disconnects the LED anodes from
the output of the boost regulator, which holds the boost
regulator’s voltage on C OUT , reducing audible noise from the
PWM dimming and removing power from the LED string.
8-Bump 1.57 x 1.57mm WLCSP
Applications
2–4
LEDs
GND
EN
VLED
1
2
3
P1
GND
8
7
6
VIN
VOUT C OUT
SW
C IN
Cellular Phones, Smart Phones
FB
4
5
PGND
Pocket PCs
WLAN DC-DC Converter Modules
RSET
PDA, DSC, PMP, and MP3 Players
Ordering Information
Figure 1.
Typical Application
Part Number
FAN5340UCX
FAN5340MPX
(Prelminary)
Operating
Temperature Range
-40 to 85°C
-40 to 85°C
Package
8-Bump, 1.57 x 1.57mm Wafer Level Chip-Scale
Package (WLCSP)
8-Lead, 3.00 x 3.00mm Molded Leadless
Package (MLP)
Packing
Tape and Reel
Tape and Reel
? 2010 Fairchild Semiconductor Corporation
FAN5340 ? Rev. 1.0.1
www.fairchildsemi.com
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