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TC1142-4.0EUA PDF预览

TC1142-4.0EUA

更新时间: 2024-11-23 15:53:51
品牌 Logo 应用领域
美国微芯 - MICROCHIP 输入元件开关光电二极管
页数 文件大小 规格书
7页 57K
描述
SWITCHED CAPACITOR REGULATOR, 275 kHz SWITCHING FREQ-MAX, PDSO8, MSOP-8

TC1142-4.0EUA 技术参数

是否Rohs认证:不符合生命周期:Obsolete
零件包装代码:MSOP包装说明:MSOP-8
针数:8Reach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.74Is Samacsys:N
其他特性:IT CAN ALSO OPERATE FROM A 3.5V NOMINAL INPUT VOLTAGE模拟集成电路 - 其他类型:SWITCHED CAPACITOR REGULATOR
控制模式:VOLTAGE-MODE最大输入电压:5.5 V
最小输入电压:2.5 V标称输入电压:3.2 V
JESD-30 代码:S-PDSO-G8JESD-609代码:e0
长度:3 mm功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:0.02 A
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP8,.19封装形状:SQUARE
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH认证状态:Not Qualified
座面最大高度:1.1 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:DOUBLER INVERTER
最大切换频率:275 kHz温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
宽度:3 mmBase Number Matches:1

TC1142-4.0EUA 数据手册

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TC1142  
Inductorless 2x Boost/Buck Regulator  
GENERAL DESCRIPTION  
FEATURES  
The TC1142 generates a regulated negative voltage  
from3Vto5Vat20mAfromaninputof2.5Vto5.5V,using  
only three external capacitors. Other boost/buck switching  
regulatorsmustuseaninductor, whichislargerandradiates  
EMI. An internal voltage comparator inhibits the charge  
pump when VOUT is more negative than the regulated value  
(per the ordering option). The values of flying capacitors C1  
and C2 are chosen to be less than COUT in order to reduce  
the ripple generated from regulating VOUT in this manner.  
The TC1142 also can be used as a –1x buck regulator by  
Input Range 2.5V to 5.5V  
Regulated Output Options from –3.0 to –5.0V  
Output Current 20 mA (max)  
200 KHz Internal Oscillator Frequency  
External Synchronizing Clock Input  
Logic Level Shutdown .............. 1µA (max) Supply  
Current  
8-Pin MSOP Package  
omitting C2, and connecting the C2-pin to VOUT  
.
TYPICAL APPLICATIONS  
The part goes into shutdown when the CCLK input is  
driven low. When in shutdown mode, the part draws a  
maximum of 1 µA. When CCLK is pulled high, the part runs  
from the internal 200 KHz oscillator. The device may be run  
with an external clock, provided the frequency is greater  
than 3 KHz and less than 500 KHz.  
Cellular Phones  
Battery Powered/Portable Equipment  
TYPICAL APPLICATION  
The TC1142 comes in a space-saving MSOP package.  
2x Boost/Buck  
5.5V to 2.5V  
ORDERING INFORMATION  
OFF  
ON  
VIN  
Part No.  
Package  
Temp. Range  
CCLK  
VOUT  
V
OUT = 5.0V  
TC1142-3.0EUA  
TC1142-4.0EUA  
TC1142-5.0EUA  
8-Pin MSOP  
8-Pin MSOP  
8-Pin MSOP  
–40°C to 85°C  
–40°C to 85°C  
–40°C to 85°C  
OSC  
OVERRIDE  
4.7 µF  
COUT  
TC1142-50  
0.47 µF  
0.47 µF  
C1  
C2  
Note: Contact factory for availability of –3.5 and –4.5V options.  
GND  
PIN CONFIGURATION  
1x Buck  
8-Pin MSOP  
5.5V to 3V  
CCLK  
OFF  
VOUT  
CCLK  
VIN  
8
7
6
5
1
2
3
4
ON  
VIN  
VOUT  
C2–  
C2+  
C1–  
V
OUT = 3.0V  
OSC  
OVERRIDE  
TC1142  
4.7 µF  
COUT  
TC1142-30  
C1+  
0.47 µF  
C1  
GND  
C2–  
GND  
© 2001 Microchip Technology Inc. DS21360A  
TC1142-2 12/6/99  

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