US3010ACW UNISEM [UNISEM], US3010ACW Datasheet - Page 6

• Manufacturer Part Number: US3010ACW
• Description: 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC
• Manufacturer: UNISEM [UNISEM]

US3010/3010A
TYPICAL APPLICATION
TYPICAL APPLICATION
SYNCHRONOUS OPERATION
(Dual Layout with SC1152)
Table of components that need to be modified to make the dual layout work for US3010A* and SC1152.
Part #
SC1152
US3010A* O
S - Short
* Table also applies to the none "A" version of the part.
Note 1 : R8 can be replaced with shorting wire of #20 AWG or lower. This elliminates the expensive current
sense resistor that otherwise is needed with SC1152.
4-6
Figure 2- Typical application of US3010/3010A in an on board DC-DC converter providing the Core supply for the
VID4
VID3
VID2
VID1
VID0
12V
5V
C2
C1
R1
R1
S
13
9
C3
C4
O - Open
L1
NC
SS/BstH
V12
D4
12
16
R2
O
V
C5
D3
V5
17
2
C6
R2
R4
O
S
CS+
D2
18
6
V - See Unisem or Semtech parts list for the value.
R3
HDrv
US3010
Q1
D1
19
8
R7
V
O
CS-
D0
20
5
Pentium II microprocessor.
R4
R5
R8
V
S
PGndH
LDrv
NC/
11
7
R11
AGnd
Gnd
Ct/
10
Q2
1
R9
V
O
C9
OVP
Vfb
15
PGd
3
C7
R6
L2
En
R7
14
4
R10
V
O
R8
R9
C8
R11
S
O
R12
C11
3010app1-1.1
R10
C2
O
V
R13
C10
C5
O
V
OutEn
Power Good
OVP
C8
V
O
C9
O
V
Rev. 1.1
5/18/98