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RT9451 数据表(PDF) 13 Page - Richtek Technology Corporation

部件名 RT9451
功能描述  Switch-Mode Single Cell Li-ion Battery Charger with USB OTG
PDF  37 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  RICHTEK [Richtek Technology Corporation]
网页  http://www.richtek.com
标志 RICHTEK - Richtek Technology Corporation

RT9451 数据表(HTML) 13 Page - Richtek Technology Corporation

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background image
RT9451
13
DS9451-00
September 2013
www.richtek.com
©
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Boost Mode
Efficiency vs. Load Current
0
10
20
30
40
50
60
70
80
90
100
0
200
400
600
800 1000 1200 1400 1600 1800
Load Current (mA)
VIN = 5V
VBAT = 3.4V
VBAT = 3.6V
VBAT = 3.8V
VBAT = 4V
VBAT = 4.2V
Line Regulation
4.98
4.99
5.00
5.01
5.02
5.03
5.04
5.05
5.06
5.07
5.08
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4
4.1
4.2
4.3
Battery Voltage (V)
VIN = 5V
ILOAD = 0.1A
ILOAD = 0.4A
ILOAD = 0.7A
ILOAD = 1A
ILOAD = 1.3A
ILOAD = 1.6A
Load Regulation
4.98
4.99
5.00
5.01
5.02
5.03
5.04
5.05
5.06
5.07
5.08
0
200
400
600
800 1000 1200 1400 1600 1800
Load Current (mA)
VIN = 5V
VBAT = 3.4V
VBAT = 3.6V
VBAT = 3.8V
VBAT = 4V
VBAT = 4.2V
Time (5ms/Div)
Battery Under-Voltage Protection
ILX
(1A/Div)
VBAT
(2V/Div)
INT
(2V/Div)
VIN
(5V/Div)
VIN = 5V, ILOAD = 500mA
Time (25
μs/Div)
VIN Over-Voltage Protection
ILX
(1A/Div)
INT
(5V/Div)
VIN
(5V/Div)
VIN = 5V, ILOAD = 0.5A, VBAT = 3.7V
Time (250
μs/Div)
Load Transient Response
ILOAD
(500mA/Div)
VIN_ac
(100mV/Div)
ILOAD = 0.2A to 1A (30mA/
μs)
VIN = 5V, VBAT = 3.7V



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