The cxsu6353 is a synchronous rectifier boost DC-DC converter with a working frequency of 1MHz and a load capacity of more than 2A. It is mainly composed of a reference voltage source, an oscillator, an error amplifier, a phase compensation circuit, a PFW / PWM conversion control circuit and an adjustable current limiting circuit. The n-channel MOSFET and p-channel MOSFET with low on resistance are internally integrated. This product is suitable for the boost system with large load power supply demand powered by lithium battery.
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目录
7.相关产品
产品概述
CXSU6353是一款工作频率在1MHZ，带载能力达 到2A以上的同步整流升压DC-DC转换器，其内部 主要由基准电压源， 振荡器，误差放大器，相位 补偿电路， PFW/PWM 转换控制电路和一个可调 的限流电路组成。内部集成有低导通电阻的N沟道 MOSFET和P沟道MOSFET。此产品适用于锂电池 供电的大负载供电需求的升压系统。
产品特点
● 高效率（效率高达 94%）
● 输入 3.3V，输出 5V 带载 2A 的情况下效率高达 92.5%
● 输入 3.3V，输出 5V 时可保证带载 2.5A
●不需要外置肖特基二极管 ● 振荡频率：1.0MHz
● 基准电压值：1.25V（±2%）
● 输入电压范围：2.9V 到 4.4V
● 持续输出电流：典型值 2.0A（输入 3.0V,输出 5.0V 的 情况下）
● 软启动功能
● 关断功能：最大关断电流 1.0uA
● 欠压保护功能
● 限流功能：通过改变外部 RCS 电阻值来调节限流大小
● 温度保护功能：156℃保护
应用范围
●便携式充电器,移动电源
● 8-pin ESOP8
●数码相机、GPS、无线收发器
●Ipad，笔记本电脑、智能手机，以及便携手持设备
技术规格书（产品PDF)
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产品封装图
电路原理图
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Step-Up DC/DC Converter（升压DC/DC转换器） |
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Part |
MODE |
VIN |
VOUT |
Accu |
FOSC |
Eff. |
Application |
Package |
|
PFM |
0.9-6.5V |
3.0-5.0V |
±2.5% |
100K |
85% |
①②③④⑤⑥⑧ |
SOT23-3/SOT23-5/SOT89-3 |
|
|
PWM |
0.9-6.5V |
3.0-5.0V |
±2.5% |
100K |
87% |
①②③④⑤⑥⑧ |
SOT23-3/SOT23-5/SOT89-3 |
|
|
PFM |
0.9-6.5V |
2.7-5.6V |
±2.5% |
180K |
85% |
①②③④⑤⑥⑦ |
SOT23-5/SOT89-3/SOT23-3/TO92 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
300K |
88% |
⑥⑦⑨⑩ |
SOT23-5 |
|
|
PFM |
0.9-6.5V |
1.8-6.0V |
±2% |
150K/ |
85% |
①②③④⑤⑥ |
SOT89-3//SOT23-5/SOT23-3 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
300K |
88% |
⑥⑦⑨⑩ |
SOT23-5 |
|
|
CHARGE |
2.7-5.5V |
5.0V |
±3% |
650K |
81% |
①②④⑦⑧ |
SOT23-6 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-5/ |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-5/SOT89-5 |
|
|
PFM/PWM |
2.5-5.0V |
<12V |
±2% |
1M |
85% |
⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM |
2.5-5.0V |
<20V |
±2% |
1M |
88% |
①⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM |
0.9-6.5V |
<20V |
±2% |
1.2M |
85% |
⑥⑦⑨⑩ |
SOT23-6 |
|
|
PFM/PWM, Synchronous |
2.9-4.4V |
<5.5V |
±2% |
1M |
94% |
①②④⑦ |
ESOP8 |
|
|
PFM, Synchronous |
0.9-6.5V |
1.8-6.0V |
±2% |
330K |
85% |
①②③④⑤⑥ |
SOT89-3/ SOT23-5/SOT23-3 |
|
|
PFM, Synchronous |
0.9-5.0V |
1.8-5.0V |
± 2% |
400K |
95% |
①②④⑥⑦ |
SOT89/SOT23/SOT23-5/TO92 |
|
|
PFM, Synchronous |
0.9-6.0V |
1.8-6.0V |
±2% |
140K |
81% |
①②③④⑤⑥ |
SOT89/SOT23-3 |
|
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Applications： ①Battery powered equipment②Wireless mouse, Wireless keyboard③Toys④Camera, Video camera⑤VCR⑥PDA⑦LED Lighting⑧Wireless communication equipment⑨MID⑩Audio equipment |
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