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XC6365 Datasheet(PDF) 1 Page - Torex Semiconductor

Part # XC6365
Description  PWM PWM/PFM
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Manufacturer  TOREX [Torex Semiconductor]
Direct Link  http://www.torex.co.jp
Logo TOREX - Torex Semiconductor

XC6365 Datasheet(HTML) 1 Page - Torex Semiconductor

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47
XC6365/XC6366系列 
PWM、PWM/PFM切换降压DC/DC控制器
概  要
特  点
XC6365/XC6366系列是内置高速低通态电阻驱动器的通用高频
降压DC/DC控制器集成电路。使用晶体管、线圈、二极管和电
容器共4种外置元件,可构建输出电流为1A以上的高效率降压
DC/DC转换器。
该器件可在1.5V~6.0V(精度±2.5%)范围内,以0.1V的间隔
进行设定(VOUT型)。并且,除了VOUT型之外,还备有内置1.0V
的基准电压源,可以外置元件任意设定输出电压的型号(FB
型)。
因开关频率高达300kHz,可使用小型外置元件。
在小负载时,PWM/PFM切换控制型XC6366系列以PFM工作模式
进行工作。因此,在从小负载至大输出电流的整个负载范围内,
达到高效率。
软启动时间有,在内部设定为10ms的型号(A、B型),以及可用
外置电阻和电容器进行调整的的型号(C、D型)。
使用待机功能,可停止工作使电流消耗达到0.5
µA以下(CE端
"L")。
内置U.V.L.O.功能,当输入电压在规定电压以下时,会强制性
地将外置晶体管断开。
输入电压范围
:2.2V~10V
输出电压范围
:在1.5V~6.0V范围内,可以0.1V间隔
进行设定。
设定电压精度±2.5%
工作频率
:300kHz±15%
客户产品180、500kHz
最大输出电流
:1.0A以上(VIN=5.0V、VOUT=3.0V)
高效率
:92%(TYP.)
待机功能
:ISTB=0.5
µA(max.)
备有软启动时间外部设定型
备有输出电压内部设定型(VOUT型)和外部设定型(FB型)
SOT-25封装
引脚排列
引脚说明
SOT-25
(TOPVIEW)
1
2
3
4
5
VDD
EXT/
GND
VOUT
(FB)
CE
引脚序号
符号
功  能
1
EXT/
连接外置晶体管
2VDD
电源
3
GND
接地
4CE
停机控制
(C、D 型:软启动外部设定、
兼软启动电容器连接)
5
VOUT
(FB)
输出电压监测
(B、D 型:输出电压外部设定)
电路框图
(1) XC6365、XC6366系列 A、C型(VOUT型)
(2) XC6365、XC6366系列 B、D型(FB型)
+
-
Phase
Compensation
Buffer,
Driver
RampWave
Generator,
OSC
PWM/PFM
Controler
Vrefwith
SoftStart,
CE
+
-
EXT/
PWM
Comparator
VDD
GND
VOUT
ErrorAmp.
CE
FB
+
-
Phase
Compensation
Buffer,
Driver
RampWave
Generator,
OSC
PWM/PFM
Controler
Vrefwith
SoftStart,
CE
+
-
EXT/
PWM
Comparator
VDD
GND
ErrorAmp.
CE


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