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TC120 Datasheet(PDF) 8 Page - Microchip Technology

Part # TC120
Description  PWM/PFM Step-Down Combination Regulator/Controller
PDF  14 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

TC120 Datasheet(HTML) 8 Page - Microchip Technology

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TC120
DS21365B-page 8
© 2002 Microchip Technology Inc.
FIGURE 3-3:
SHUTDOWN CONTROL CIRCUITS
FIGURE 3-4:
SOFT START TIMING
SHDN/SS
TC120XX03
CSS
SHDN/SS
TC120XX03
CSS
SHDN/SS
TC120XX03
CSS
4.7nF
SHDN/SS
TC120XX03
RSS
VIN
SHDN
ON OFF
47K
2N2222
CSS
4.7nF
R1
VIN
CMOS
Gate
a) Using an Open Collector Device
b) Using a Complementary Output Device
c) Shutdown Not Used – with Pull-Up
d) Shutdown Not Used – No Pull-Up
SHDN
ON OFF
OFF
ON
0.65V
0V
1.5msec
SHDN/SS
Shutdown
Signal
X



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