IC Data Sheets
8.
8.3
Diagram B01, MP1593 (IC U14)
Figure 8-3 Internal block diagram and pin configuration
Block Dia
g
ram
Pin Confi
g
uration
1
8
520_
3
07_090
3
25.ep
s
090
3
25
B
S
IN
S
W
GND
SS
EN
COMP
FB
1
2
3
4
8
7
6
5
TOP VIEW
EXPO
S
ED PAD
ON BACK
S
IDE
CONNECT TO PIN 4
LOCKOUT
COMPARATOR
ERROR
AMPLIFIER
FREQUENCY
FOLDBACK
COMPARATOR
INTERNAL
REGULATOR
S
1.
8
V
S
LOPE
COMP
CLK
CURRENT
COMPARATOR
CURRENT
S
EN
S
E
AMPLIFIER
S
HUTDOWN
COMPARATOR
SS
8
COMP
6
IN
2
EN
7
GND
4
O
S
CILLATOR
40/
38
5KHz
S
R
Q
S
W
3
B
S
M1
M2
1
5V
+
Q
0.7V
+
+
2.
3
V/
2.6V
+
1.22V
0.7V
+
+
FB
5
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