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L4976 Datasheet(PDF) 3 Page - STMicroelectronics

Part # L4976
Description  1A step down switching regulator
Download  17 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4976 Datasheet(HTML) 3 Page - STMicroelectronics

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background image
L4976
Block diagram
3/17
1
Block diagram
Figure 2.
Block diagram
VREF
VOLTAGES
MONITOR
THERMAL
SHUTDOWN
E/A
PWM
3.3V
OSCILLATOR
R
S
Q
INTERNAL
REFERENCE
5.1V
DRIVE
CBOOT
CHARGE
CBOOT
CHARGE
AT LIGHT
LOADS
2
7
8
FB
COMP
3
1
4
6
5
BOOT
OSC
GND
OUT
VCC
3.3V
VREF


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