IRU3033CS International Rectifier, IRU3033CS Datasheet - Page 6
![IC CTRL/REG PWM SWITCH 8-SOIC](/photos/5/43/54340/21-8-soic_sml.jpg)
IRU3033CS
Manufacturer Part Number
IRU3033CS
Description
IC CTRL/REG PWM SWITCH 8-SOIC
Manufacturer
International Rectifier
Datasheet
1.IRU3033CSTR.pdf
(12 pages)
Specifications of IRU3033CS
Applications
Controller, Intel Pentium®, II, P55C
Voltage - Input
12V
Number Of Outputs
1
Voltage - Output
2 ~ 3.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
*IRU3033CS
IRU3033-CS
IRU3033-CS
IRU3033-CS
IRU3033-CS
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
IRU3033CS
Manufacturer:
IR
Quantity:
20 000
Part Number:
IRU3033CSDTR
Manufacturer:
IR
Quantity:
20 000
Part Number:
IRU3033CSTR
Manufacturer:
IR
Quantity:
20 000
IRU3033(PbF)
TYPICAL APPLICATION
5V to 3.3V for Pentium Application with AGP or Pentium II Application without ATX power supply Dual
mode Operation between Switching or Linear mode.
Figure 4 - This unique application of IRU3033 allows the designer to switch between Linear or Switching mode of
operation using a single IC. This circuit has the flexibility to be used for low current operation in Linear mode for cost
reasons and yet be able to operate in the Switching mode if the load current increases and the heat generated by
the Linear operation will be an issue.
6
12V
5V
The table below describes the components that will be effected for the two modes of operation.
R10
C1
R9
L1
Mode of Operation
Switching
Linear
R1A
C8
C2
V = See parts list for value
Q2
R1B
V
Drv1
12(SW)
V
L1
V
S
12
R13
C3
L2
V
S
Drv2
V
U1
FB1
D1
V
O
V
V
www.irf.com
C4
FB2
C4
Gnd
HYST
V
O
R2
R3
C9
C5
O
V
R1A
S = Short
O
V
D1
R1B
C5
V
O
R2
V
O
R3
O = Open
O
V
R4
V
V
L2
R5
R4
R5
O
R6
R7
V
R6
V
V
R7
O
V
C7
V
OUT