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低开启升压芯片-ZCC9266

更新时间:2019-11-21 09:31:38 大小:1M 上传用户:wxsw查看TA发布的资源 标签:升压芯片zcc9266干电池升压 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

资料介绍

替代RT9266  ZCC9266小封装/高效率/DCDC干电池升压芯片

简介:

ZCC9266是一种紧凑、高效、低电压的升压型DC/DC变换器,具有自适应电流型PWM控制回路,包括误差放大器、斜坡发生器、比较器、开关传递元件和驱动器,可在大范围的负载电流下提供稳定、高效的工作。它以稳定的波形运行,无需外部补偿。低启动输入电压低于1V,使得ZCC9266适用于提供高达300mA输出电流的14个电池应用。450kHz的高开关速率使外部元件的尺寸最小化。此外,17mA的低静态电流和高效率延长了电池的使用寿命。输出电压由两个外部电阻器设置。提供用于驱动外部电源设备(NMOSNPN)的内部2A开关和驱动器。小型SOT-26SOT89-5包装。

特征

·1.0V低启动输入电压

·高供电能力,提供3.3V 100mA碱性电池

·17m A静态(关闭)电源电流

·零关闭模式电源电流

·90%效率

·450kHz固定开关频率

·为使用内部和外部电源开关提供灵活性

应用

·掌上电脑·差示扫描量热法·液晶面板·射频标签·MP3

·便携式仪器·无线设备

9266.PNG

部分文件列表

文件名 大小
ZCC9266(低开启升压芯片_替代RT9266).PDF 1M

部分页面预览

(完整内容请下载后查看)
CC9266  
Z
Tiny Package, High Efficiency, Step-up DC/DC Converter  
General Description  
Features  
l 1.0V Low Start-up Input Voltage  
l High Supply Capability to Deliver 3.3V 100mA with  
1 Alkaline Cell  
ZCC9266  
The  
is a compact, high efficiency, and low voltage  
step-upDC/DC converter with anAdaptive Current Mode  
PWM control loop, includes an error amplifier, ramp  
generator, comparator, switch pass element and driver  
in which providing a stable and high efficient operation  
over a wide range of load currents. It operates in stable  
waveforms without external compensation.  
l 17µA Quiescent (Switch-off) Supply Current  
l Zero Shutdown Mode Supply Current  
l 90% Efficiency  
l 450kHz Fixed Switching Frequency  
l Providing Flexibility for Using Internal and External  
Power Switches  
The low start-up input voltage below 1V makes ZCC9266  
suitable for 1 to 4 battery cells applications of providing  
up to 300mA output current. The 450kHz high switching  
rate minimized the size of external components. Besides,  
the 17mA low quiescent current together with high  
efficiency maintains long battery lifetime.  
l Small SOT-26 & SOT89-5 Package  
Applications  
l PDA  
l DSC  
The output voltage is set with two external resistors. Both  
internal 2A switch and driver for driving external power  
devices (NMOS or NPN) are provided.  
l LCD Panel  
l RF-Tags  
l MP3  
l Portable Instrument  
l Wireless Equipment  
Ordering Information  
ZCC9266  
Pin Configurations  
Package Type  
E : SOT-26  
(TOP VIEW)  
X5 : SOT-89-5  
CE  
6
1
2
3
FB  
Operating Temperature Range  
C : Commercial Standard  
P : Pb Free with Commercial Standard  
EXT  
5
4
VDD  
LX  
GND  
Marking Information  
For marking information, contact our sales representative  
SOT-26  
directly or through a  
distributor located in your  
zcc-china  
GND  
LX  
area, otherwise visit our website for detail.  
5
1
4
3
2
CE  
VDD  
FB  
SOT-89-5  
www.zcc-china.com  
1
ZCC9266-06 June 2009  

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