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RT9941 Datasheet(PDF) 13 Page - Richtek Technology Corporation

Part # RT9941
Description  Power Management ICs for Handheld Device
PDF  33 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9941 Datasheet(HTML) 13 Page - Richtek Technology Corporation

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RT9941
13
DS9941-01 April 2011
www.richtek.com
I2C Power On LDO4, LDO5
Time (25
μs/Div)
CLK
(5V/Div)
DATA
(5V/Div)
LDO4
(2V/Div)
LDO5
(2V/Div)
I2C Power Off LDO4, LDO5
Time (25
μs/Div)
LDO4
(2V/Div)
DATE
(5V/Div)
CLK
(5V/Div)
LDO5
(2V/Div)
Normal to Deep Sleep Mode
Time (100
μs/Div)
VLDO3 (2V/Div)
VLDO2 (2V/Div)
VLDO4 (5V/Div)
VBuck2 (5V/Div)
VLDO1 5V/Div)
VBuck1 (2V/Div)
DATA(5V/Div)
VLDO5 5V/Div)
VBATT = 4V, IOUT = 500mA
Buck1 Output Voltage Ripple
Time (500ns/Div)
ILX1
(500mA/Div)
VBuck1
(20mV/Div)
VLX1
(2V/Div)
Normal to Sleep Mode
Time (10ms/Div)
VLDO2
(1V/Div)
VBuck2
(1V/Div)
Power On nRESET Response
Time (50ms/Div)
nRESET
(5V/Div)
VPWR_EN
(2V/Div)
VPWR_EN
(1V/Div)
VBATT = 4V
VBATT = 4V
VBATT = 4V
VBATT = 4V
VBATT = 4V



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