LTC4253/LTC4253A
11
425353aff
For more information www.linear.com/4253
BLOCK DIAGRAM
V
EE
1?/DIV>
6.15V
(5V)
1?/DIV>
8?/DIV>
1?/DIV>
V
IN
V
EE
PWRGD3
50礎
6.15V
(5.09V)
V
EE
120礎
V
EE
120礎
V
IN
V
IN
V
EE
V
IN
V
EE
200礎
16
OV
11
EN3
15
V
IN
V
EE
V
EE
22礎
(28礎)
FOR COMPONENTS, CURRENTS AND VOLTAGES WITH TWO
VALUES, VALUES WITHOUT PARENTHESES REFER TO THE
LTC4253, VALUES WITH PARENTHESES REFER TO THE LTC4253A
95k
(47.5k)
R
SS
5k
(2.5k)
SS
6
V
IN
V
IN
V
EE
V
EE
50礎
V
IN
V
IN
V
EE
PWRGD2
50礎
2
EN2
1
V
EE
PWRGD1
50礎
3
4
V
EE
8
RESET
5
SQTIMER
DELAY
LOGIC
SQTIMER
DELAY
+

4V
+

1V
TIMER
13
+

4V
+

0.33V
+

UV
12
2.925V
(2.756V)
+

+

0.5V
+

2.39V
+


+
V
IN
V
EE
5礎
V
IN
V
EE
5礎
5礎
+

2.8V
+

200mV
+

10mV
V
EE

+
+

50mV
4253 BD
CB
FCL

+
ACL
V
EE
SENSE
7
GATE
9
DRAIN
10
SQTIMER
14
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