iru3004 International Rectifier Corp., iru3004 Datasheet - Page 5

• Manufacturer Part Number: iru3004
• Description: 5-bit Programmable Synchronous Buck Controller Ic With Dual Ldo Controller
• Manufacturer: International Rectifier Corp.

BLOCK DIAGRAM
Rev. 1.7
07/16/02
V
Lin2
Lin1
V
V12
FB2
V5
D0
D1
D2
D3
D4
FB1
12
19
18
17
16
15
20
5
4
2
3
UVLO
DAC,
Logic
Ctrl
5Bit
Enable
Vset
Enable
Figure 2 - Simplified block diagram of the IRU3004.
1.5V
Start &
Comp
Slope
Logic
Fault
Soft
+
Vset
www.irf.com
Enable
Enable
Osc
Control
PWM
Current
Over
1.1Vset
0.9Vset
200uA
V12
V12
IRU3004
14
13
10
11
9
7
6
8
1
V
HDrv
LDrv
CS-
CS+
Ct
SS
PGd
Gnd
FB3
5