参数资料
型号: SP7648EU-L
厂商: Exar Corporation
文件页数: 1/13页
文件大小: 0K
描述: IC LED DRVR FLASH PFM 10MSOP
标准包装: 50
恒定电流:
拓扑: 升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 闪灯/白光,通用
类型 - 次要: 高亮度 LED(HBLED),白色 LED
电源电压: 2.7 V ~ 4.5 V
输出电压: 2.7 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
供应商设备封装: 10-MSOP
包装: 管件
工作温度: -40°C ~ 85°C
其它名称: 1016-1536-5
SP7648EU-L-ND
S P 7 6 4 8
L o w R e f e r e n c e H i g h E f f i c i e n c y B o o s t R e g u l a t o r
November 2012
GENERAL DESCRIPTION
The SP7648 is an ultra-low quiescent current,
high efficiency step-up DC-DC converter ideal
for single cell Li-Ion or dual cell alkaline
battery applications to drive various LEDs. The
SP7648 combines low quiescent current and
excellent light-load efficiency of PFM control.
The SP7648 features synchronous rectification,
a 0.3 ? charging switch, an anti-ringing
inductor switch, under-voltage lockout and
programmable inductor peak current. The
device can be shut down by a 1nA active LOW
shutdown pin. A very low 0.288V reference
voltage is optimized for driving a constant
current load.
Rev. 2.0.0
APPLICATIONS
? LED Driver
? Camera Flash
? Handheld Portable Devices
FEATURES
? True Shutdown
? 700mA Output Current at 3.3V Input;
4.2V output
? 92% Efficiency from 2.7V IN to 3.3V OUT
? 2.7V to 4.5V Wide Input Voltage Range
? 5V Fixed or Adjustable Output
? 0.3 ? Switch
? Integrated Synchronous Rectifier:0.3 ?
? Anti-Ringing Switch Technology
? Programmable Inductor Peak Current
? Logic Shutdown Control
? Low 0.8V or 0.288V Reference Voltage
? Small 10-pin DFN and MSOP Package
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP7648 Application Diagram
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001
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