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RT9046 Datasheet(PDF) 2 Page - Richtek Technology Corporation

Part # RT9046
Description  Low-Dropout Linear Regulator Controller with PGOOD
PDF  11 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9046 Datasheet(HTML) 2 Page - Richtek Technology Corporation

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RT9046
2
DS9046-01 April 2011
www.richtek.com
Test Circuit
Figure 1. Typical Test Circuit
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
EN
Chip Enable (Active High).
2
GND
Ground.
3
FB
Output Voltage Feedback.
4
PGOOD
Power Good Open Drain Output.
5
DRI
Driver Output.
6
VCC
Power Supply Input.
Figure 2. DRI Source/Sink Current Test Circuit
VIN
PGOOD
VOUT
R1
R2
Q1
EN
GND
FB
VCC
DRI
PGOOD
RT9046
1k
2k
PHD3055
Chip Enable
VOUT = 0.5x[(R1+R2)/R2]
RPGOOD
100k
CCC
1µF
VCC
12V
CIN
100µF
COUT
100µF
VCC
CCC
VDRI
CFB
A
EN
GND
FB
VCC
DRI
PGOOD
RT9046
Chip Enable
1µF
12V
5V
VFB
VFB = 0.7V for current sink at DRI
VFB = 0.3V for current source at DRI



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