
L4976 Block diagram
3/17
1 Block diagram
Figure 2. Block diagram
V
REF
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
V
CC
3.3V
V
REF