US3005CW UNISEM [UNISEM], US3005CW Datasheet - Page 5

• Manufacturer Part Number: US3005CW
• Description: 5 BIT PROGRAMMABLE SYNCHRONOUS BUCK CONTROLLER IC WITH DUAL LDO CONTROLLER
• Manufacturer: UNISEM [UNISEM]

BLOCK DIAGRAM
BLOCK DIAGRAM
Rev. 1.2
12/8/00
Vfb2
Vfb1
Lin2
Lin1
V12
D0
D1
D2
D3
D4
V5
UVLO
DAC,
Logic
Ctrl
5Bit
Figure 1 - Simplified block diagram of the US3004.
Enable
Vset
Enable
1.5V
Start &
Comp
Slope
Logic
Fault
Soft
+
Vset
Enable
Enable
Osc
Control
PWM
Current
Over
1.1Vset
0.9Vset
200uA
3004blk2-1.3
V12
V12
US3004/US3005
Vfb3
HDrv
LDrv
CS-
CS+
Ct / En
SS
PGd
Gnd
4-5