SC2642
电源管理
框图
C/A1
OS1
1
+
OUT
-
+
PWM1
OUT
R
S
Q
DRV1
17
OUT1
C/A2
OS2
20
+
OUT
-
+
PWM2
OUT
R
S
Q
DRV2
18
OUT2
OUTSEN
OUTSEN
19
-
-
振荡器
坡道
OSCREF
15
ROSC
OSC
ERROUT
时钟分频器
CLK
P1
P2
VID0
VID1
VID2
VID3
VID4
VID5
DACSTEP
12
DAC
关流
11
10
9
8
13
6
VID0
VID1
VID2
VID3
VID4
VID5
11111
抑制
2R
VDAC
-
2R
+
OUT
R
VBG
PWR_GOOD
+
14
OUT
PGOOD
OUTSEN
+
垂
OUT
-
R
电源正常阈值
-
0
FB
5
-
E / A
OUT
ERROUT
3
ERROUT
R
R
+
R
Bgout
Bgout
2
OUT
-
OCP &
SHUTDOWM
0
卜FF器
VCC
+
7
VCC
带隙
VCC
VREF
GSEN
UVLO &
LATCH
VBG
Bgout
16
AGND
GSENSE
4
2005年升特公司
6
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