Gateway FPD1810, Руководство по обслуживанию

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PIN CONFIGURATION
- 26 -
3.5A STEP DOWN SWITCHING REGULATOR
OSC
OUT
OUT
GND
GND
V
CC
GND
V
CC
BOOT
1
3
2
4
5
6
7
8
9 INH
VFB
COMP
GND
GND
GND
V5.1
SS
SYNC 18
17
16
15
14
12
13
11
10
D94IN162A
DIP18
OSC
OUT
OUT
GND
GND
GND
GND
V
CC
V
CC
VFB
COMP
GND
GND
GND
GND
V5.1
SS
SYNC 1
3
2
4
5
6
7
8
9
18
17
16
15
14
12
13
11
19
10
20
BOOT INH
D94IN163A
SO20
Pin Configuration
L4973V3-L4973V5
L4973D3-L4973D5
VREF
GOOD
5.1V
COMP
VFB
SYNC
BOOT
DRIVER
HICCUP CURRENT
LIMITING
INTERNAL
REFERENCE
SS
INH
ZERO CURRENT
INHIBIT
D94IN161B
+
-
3.3V
V5.1
E/A
SOFT
START
5.1V
3.3V
THERMAL
SHUTDOWN
INTERNAL
SUPPLY
5.1V
-
+
PWM
CURRENT
LIMITING
R
S
Q
Q
CBOOT
CHARGE
OSCILLATOR
OUT OUT2 GND OSC
V
CC2
V
CC
17(19)
11(12)
12(13)
18(20)
1(1) 2(2) 3(3)
9(10)
8(9) 7(8) 16(18) 10(11)
4,5,6,13,14,15
(4,5,6,7,14,15,16,17)
Pin x = Powerdip
Pin (x) = S020
Block Diagram