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RT8239B Datasheet(PDF) 14 Page - Richtek Technology Corporation

Part # RT8239B
Description  High Efficiency, Main Power Supply Controller for Notebook Computers
PDF  24 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8239B Datasheet(HTML) 14 Page - Richtek Technology Corporation

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RT8239A/B/C
14
DS8239A/B/C-06 October 2012
www.richtek.com
©
Copyright 2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Power On from ENLDO
Time (2ms/Div)
VIN = 12V, VENTRIP1 = VENTRIP2 = 1.5V
LDO5
(2V/Div)
LDO3
(2V/Div)
ENLDO
(10V/Div)
CP
(10V/Div)
ENLDO = VIN, RTON = 100k
Ω, No Load
Shutdown Input Current vs. Input Voltage
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Input Voltage (V)
VENTRIP1 = VENTRIP2 = 5V, ENLDO = GND, No Load
Power Off from ENTRIP1
Time (4ms/Div)
RT8239B/C
VIN = 12V, VENTRIP1 = VENTRIP2 = 1.5V,
ENLDO = VIN, RTON = 100k
Ω, No Load
VIN = 12V, VENTRIP1 = VENTRIP2 = 1.5V,
ENLDO = VIN, RTON = 100k
Ω, No Load
VOUT1
(2V/Div)
PGOOD
(5V/Div)
ENTRIP1
(5V/Div)
RT8239B/C
Power On from ENTRIP1
Time (1ms/Div)
VIN = 12V, VENTRIP1 = VENTRIP2 = 1.5V,
ENLDO = VIN, RTON = 100k
Ω, No Load
VOUT1
(2V/Div)
PGOOD
(5V/Div)
ENTRIP1
(5V/Div)
RT8239B/C
Power Off from ENM
Time (10ms/Div)
VOUT1
(5V/Div)
PGOOD
(5V/Div)
ENM
(5V/Div)
VOUT2
(5V/Div)
RT8239A
VIN = 12V, VENM = 5V, RTON = 100k
Ω,
VENTRIP1 = VENTRIP2 = 1.5V,
ENLDO = VIN, No Load
Power On from ENM
Time (1ms/Div)
VOUT1
(2V/Div)
PGOOD
(5V/Div)
ENM
(5V/Div)
RT8239A
VOUT2
(2V/Div)
VENTRIP1 = VENTRIP2 = 1.5V, ENLDO = VIN, No Load
VIN = 12V, VENM = 5V, RTON = 100k
Ω



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