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RT9470 Datasheet(PDF) 15 Page - Richtek Technology Corporation

Part # RT9470
Description  3A Single Cell Switching Battery Charger
PDF  50 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9470 Datasheet(HTML) 15 Page - Richtek Technology Corporation

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RT9470/D
Copyright © 2023 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9470/D-02
October 2023
www.richtek.com
15
Typical Operating Characteristics
Charger Efficiency vs. Charging Current
84
86
88
90
92
94
96
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Charging Current (A)
VBUS = 5V
VBUS = 9V
VBUS = 12V
VBAT = 3.8V, fSW = 1.5MHz, LDCR = 26m
Charger Efficiency vs. Charging Current
84
86
88
90
92
94
96
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Charging Current (A)
VBAT = 4.2V, fSW = 1.5MHz, LDCR = 26m
VBUS = 5V
VBUS = 9V
VBUS = 12V
MIVR Tracking VBAT
4.4
4.5
4.6
4.7
4.8
4.9
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
VBAT Set (V)
VBAT + 300mV
VBAT + 250mV
VBAT + 200mV
Boost Efficiency vs. Output Current
82
84
86
88
90
92
94
96
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Output Current (A)
VBUS = 5.15V, fSW = 1.5MHz, LDCR = 26m
VBAT = 4.35V
VBAT = 4.2V
VBAT = 3.8V
VBAT = 3.5V
VBUS = 5V, VBAT = 3.8V, ICHG = 2A
REGN
(2V/Div)
VSYS
(2V/Div)
RT9470 Power-UP with VBUS Plug In
Time (100ms/Div)
VBUS
(2V/Div)
IBAT
(2A/Div)
REGN
(2V/Div)
VSYS
(2V/Div)
RT9470D Power-UP with VBUS Plug In
Time (100ms/Div)
VBUS = 5V, VBAT = 3.8V, ICHG = 2A, DCP
VBUS
(2V/Div)
IBAT
(2A/Div)



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