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  Richtek Technology Electronic Components Datasheet  

RT9401B Datasheet

5Bit VID Reference Generator

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RT9401A/B
5Bit VID Reference Generator
General Description
Features
The RT9401A/B are digital to analog converters which
generate a reference voltage for Intel VR10.x/AMD K8
5-bit VID code respectively. The parts are proposed to
pair with a series of RichTeks general purpose PWM
controllers dedicated for the desktop microprocessor core
power voltage regulation. The reference voltage is within
1% high accuracy. These parts use a small footprint
z RT9401A Support 5bit DAC Voltage Conforming to
Intel VRD10.x VID Table
z RT9401B Support 5bit DAC Voltage Conforming to
AMD K8 VID Table
z 1% High Accuracy of VREF
z Small Footprint Package of SOT-23-8
z RoHS Compliant and 100% Lead (Pb)-Free
package of SOT-23-8.
Ordering Information
Applications
z Desktop/Motherboard Microprocessor Core Power
RT9401A/B
Package Type
V8 : SOT-23-8
Regulation
z High Accuracy and Programmable Voltage Power
Regulation
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
K8
VR10.X
Pin Configurations
(TOP VIEW)
Note :
87 6 5
Richtek Pb-free and Green products are :
` RoHS compliant and compatible with the current require-
2 34
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
SOT-23-8
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area, otherwise visit our website for detail.
Typical Application Circuit
RT9401A/B
1 VID2
VID3 8
2 VID1
VID4 7
3
VDA
5V 4 VDD
CL
GND 6
VID0 5
DS9401A/B-07 June 2008
www.richtek.com
1


  Richtek Technology Electronic Components Datasheet  

RT9401B Datasheet

5Bit VID Reference Generator

No Preview Available !

RT9401A/B
Function Block Diagram
VDD
VID4
VID3
VID2
VID1
VID0
VID
Input
MUX
+
-
VREF
VDA
Functional Pin Description
Pin Number Pin Name Pin Function
1
VID2
DAC Voltage Identification Inputs.
2
VID1
DAC Voltage Identification Inputs.
3
VDA
Digital - to - Analog Voltage Output.
4
VDD
Power Input Pin.
5
VID0
DAC Voltage Identification Inputs.
6
GND
Ground.
7
VID4
DAC Voltage Identification Inputs.
8
VID3
DAC Voltage Identification Inputs.
www.richtek.com
2
DS9401A/B-07 June 2008


Part Number RT9401B
Description 5Bit VID Reference Generator
Maker Richtek Technology
PDF Download

RT9401B Datasheet PDF






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