RT8856 데이터 시트보기 (PDF) - Richtek Technology
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RT8856 Datasheet PDF : 23 Pages
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RT8856
Pin Configurations
(TOP VIEW)
40 39 38 37 36 35 34 33 32 31
DPRSLPVR 1
30 UGATE2
VRON 2
29 PHASE2
FS 3
28 PGND2
CM 4
27 LGATE2
CMSET 5
VID6 6
GND
26 PVCC
25 LGATE1
VID5 7
VID4 8
VID3 9
24 PGND1
23 PHASE1
41
22 UGATE1
VID2 10
21 BOOT1
11 12 13 14 15 16 17 18 19 20
Typical Application Circuit
WQFN-40L 6x6
VIN
5V
7V to 24V
R1
VCC
38 VCC RT8856 PVCC 26
C3
12
VID0
VID0
BOOT1 21
VID1 11 VID1
UGATE1 22
3.3V
Vccp
R11
PWRGD
CLKEN
VRTT
CM
VID2
VID3
VID4
R7 R8
VID5
VID6
PSI
DPRSLPVR
VRON
10 VID2
PHASE1 23
9 VID3
8 VID4
7 VID5
6 VID6
13 PSI
LGATE1 25
PGND1 24
ISEN1 19
ISEN1_N 20
1
2
DPRSLPVR
VRON
BOOT2
UGATE2
31
30
40 PGOOD
PHASE2 29
39
CLKEN
36
4
VRTT
CM
LGATE2 27
PGND2 28
C12 R15
R18
5 CMSET
TON 37
CPU VSS SENSE
C14
16 VSEN
15 FB
C15
ISEN2 33
ISEN2_N 32
SOFT 18
R20
VOUT
R21
R22
R23 14 COMP
RGND 17
NTC1
NTC 35
CPU VCC SENSE
R24
C18
3 FS
OCSET 34
GND
R25
41 (Exposed pad)
C1
R2
C4
Q1
R3
Q2
R4
C2
R5
C5
R9 C9
Q3
C8
R10
R12
R16
Q4
R17
C13
R13
C9
VIN
R19
C17
R26
R29
R27 R28
NTC2
L1
D1 R6 C6
VIN
C7
7V to 21V
L2
D2 R14 C10
VOUT
C11
C16
CPU VSS SENSE
VCC
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DS8856-03 June 2011
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