ADT7220
Pin Description
Pin No.
1
2
3
4
5
6
I : Input pin
P : Power pin
A : Analog pin
Name
VIN
GND
PWM
FB
OUT
DRV
I/O
-
-
O
I
O
I/O
Type
P
G
D
A
A
A
Power supply input
Ground
Switching output
Feedback voltage input
LDO output
LDO pass transistor drive signal
Description
O : Output pin
G : Ground pin
D : Digital pin
IO : Input/Output pin
Functional Block Diagram
VIN
Internal
REG.
BIAS
GND
REF
OSC
(500kHz)
+
+
FB
ZIN
PWM
-
-
ERROR AMP
ZFB
PWM
Modulator
Pre-
DRIVER
LDO
DRV
OUT
* This specifications are subject to be changed without notice
Jun. 16. 2008 / Rev. 0.1
3/6
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