SC2647 Semtech Corporation, SC2647 Datasheet - Page 5

• Manufacturer Part Number: SC2647
• Description: Multi-Platform Multi-Phase PWM Controller
• Manufacturer: Semtech Corporation

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© 2006 Semtech Corp.
POWER MANAGEMENT
Pin Descriptions
Pin Configurations
1 0 ~1 4
P in #
2 0
2 2
2 3
2 4
1 5
1 6
1 7
1 8
1 9
2 1
4
2
3
5
6
7
8
9
1
DACSTEP
ERROUT
GSENSE
BGOUT
VID4
VID3
VID2
OS3
VCC
OS2
OS1
FB
D A C S TE P
P in N a m e
G S E NS E
O S C RE F
E RROUT
OUTS E N
V ID 4 : 0
P G OOD
B GO UT
A GND
OUT2
OUT3
OUT4
OUT1
(24-Pin SOIC/TSSOP)
V ID 5
V C C
OS 3
OS 2
OS 4
OS 1
F B
10
12
11
1
2
3
4
5
6
7
8
9
Top View
1 2 .5 m V b it fo r V RD 1 0 .x. P ull i t up to >2 V a nd p ro g ra m the s ink curre nt to
C urre nt se nse i np ut.
C urre nt se nse i np ut.C o nne ct to O UTS E N fo r 2 p ha se o p e ra tio n.
C urre nt se nse i np ut.
B G re fe re nce p in.C o nne ct so ft s ta rt c a p fro m this p i n to A GND .
E rro r-a m p lifi e r o utp ut.C o nne c t co m p e nsa ti o n ne two rk to A GND .
Re m o te s e ns e fo r G ND .
F e e d b a c k p i n.Ro ute F B a nd GE NS E a s d i ffe re ntia l p a i r to C P U.
V ID ste p s p e e d .C o nne c t a ca p fro m this p i n to A GND to fi lte r D A C o utp ut.
P o we r sup p ly fo r chip .
V ID M S B to V ID L S B .
se le ctV RM 9 o r K 8 V ID ta b le .
P o we r g o o d , O p e n co lle cto r o utp ut.
Osc illa to r fre q ue ncy se tti ng .C o nne ct a re si sto r to A GND .
C le a n g ro und fo r a na lo g s ig na ls .
P W M o utp ut1 .
P W M o utp ut2 .
P W M o utp ut3 .
P W M o utp ut4 . C o nne c t to V C C fo r 3 p ha s e o p e ra ti o n.
D i re c t o utp ut se nse .
C urre nt se nse i np ut. C o nne ct to O UTS E N fo r 2 o r 3 p ha se o p e ra tio n.
24
23
22
21
20
19
18
17
16
15
14
13
OS4
OUT4
AGND
OSCREF
PGOOD
VID5
VID0
VID1
OUTSEN
OUT3
OUT2
OUT1
5
Note:
(1) Only available in tape and reel packaging. A reel contains 1000 devices
for the SOIC-24 and 2500 devices for the TSSOP-24 package.
(2) Specify SOIC-24 or TSSOP-24 package.
(3) Lead free product. This product is fully WEEE and RoHS compliant.
Ordering Information
S
S
S
S
C
C
C
C
2
2
2
2
P
6
6
6
6
P in F u n c tio n
a
4
4
4
4
t r
7
7
7
7
S
T
T
E
N
S
S
W
V
u
T
T
B
T
m
R
R
R
(
T
b
) 2
(
) 1
e
(
) 1
(
, 1
r
) 3
T
T
P
S
S
S
a
O
S
S
c
C I
O
O
k
a
P
P
2 -
g
2 -
2 -
4
e
E
4
4
v
a
u l
t a
o i
n
T
e
B
m
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SC2647
0
0
0
a
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o t
o t
d r
R
1
1
1
a
2
2
2
n
5
5
5
g
O
O
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C
C
C
T (
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