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RT9451 Datasheet(PDF) 11 Page - Richtek Technology Corporation

Part # RT9451
Description  Switch-Mode Single Cell Li-ion Battery Charger with USB OTG
PDF  37 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9451 Datasheet(HTML) 11 Page - Richtek Technology Corporation

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RT9451
11
DS9451-00
September 2013
www.richtek.com
©
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Typical Operating Characteristics
Charge Mode
Efficiency vs. Battery Voltage
60
65
70
75
80
85
90
95
100
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
Battery Voltage (V)
VIN = 5V
ICHRG = 1A
ICHRG = 1.4A
ICHRG = 1.8A
ICHRG = 2.2A
ICHRG = 2.6A
ICHRG = 3A
Efficiency vs. Battery Voltage
60
65
70
75
80
85
90
95
100
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
Battery Voltage (V)
VIN = 9V
ICHRG = 1A
ICHRG = 1.4A
ICHRG = 1.8A
ICHRG = 2.2A
ICHRG = 2.6A
ICHRG = 3A
Time (10ms/Div)
Adapter Insertion
LX
(10V/Div)
IIN
(200mA/Div)
VIN = 5V, VBAT = 3.7V
STAT
(2V/Div)
VIN
(5V/Div)
Time (5ms/Div)
Battery Removal
LX
(5V/Div)
ILX
(1A/Div)
VIN = 5V, VBAT = 3.7V, TERM_EN = 1
STAT
(2V/Div)
VBAT
(1V/Div)
Time (10ms/Div)
Bad Adapter
IIN
(20mA/Div)
INT
(5V/Div)
VIN = 5V/10mA, VBAT = 3.7V
VIN
(5V/Div)
Time (250
μs/Div)
Minimum Input Voltage Regulation
IIN
(1A/Div)
INT
(5V/Div)
VMIVR = 4.76V, VBAT = 3.7V
VIN
(2V/Div)
VIN = 5V/1A, ICHRG = 2A,
No AICR



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