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RT9481 Datasheet(PDF) 9 Page - Richtek Technology Corporation

Part # RT9481
Description  Easy to Use Power Bank Solution
PDF  41 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9481 Datasheet(HTML) 9 Page - Richtek Technology Corporation

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RT9481
Copyright © 2015 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9481-00 June 2015
www.richtek.com
9
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Efficiency for Charge
EFF_CHG
VBUS = 5V, VISENSN = 4V, and
ICHG = 2A
--
90
--
%
Oscillator Frequency
fOSC
--
0.75
--
MHz
Frequency Accuracy
10
--
10
%
Maximum Duty Cycle
DMAX
At Minimum Voltage Input
--
95
--
%
Minimum Duty Cycle
D(MIN)
0
--
--
%
Peak OCP as Charger Mode
--
4.5
--
A
Boost Mode Operation
Output Voltage Level
VBOOST
To VMID
Optional 3.625V to 5.2V by I2C
per 25mV (Default value is
5.1V)
3.625
--
5.2
V
Output Voltage Accuracy
3
--
3
%
Output Current On VMID
IBST
VBAT > 3V
3
--
--
A
Efficiency for Boost
EFF_BST
VMID = 5V, VISENSN = 4V, and
Loading = 2A
--
92
--
%
Peak OCP as Boost Mode
IOCP_BST
--
6
--
A
VMID OVP as Reverse Boost
VOVP_BST
VMID Rising
--
6
--
V
VMID OVP Hysteresis
VOVP_BST_
HYS
VMID Falling
--
200
--
mV
Battery UVP for Boost
VBATMIN
Falling, I2C Programmable Per
0.1V
Optional 2.5V to 3.2V by I2C
per 0.1V (Default value is 3V)
2.5
--
3.2
V
NTC Function
Current Source for NTC 10k
 ITS_10k
33
35
37
A
Load Switch for USBOUT
Supply Voltage
VSW
2.5
5
5.5
V
Load Switch On Resistance
of MOSFET
RDS(ON)_SW
VMID = 5V, IO = 1000mA
--
35
--
m
Current Regulation of Load
Switch for 3A
ILIM_LS
--
3
--
A
Load Switch UVP Delta
VSW_UVP_D
VMID
 VUSBOUT
--
1.4
--
V
Light Load Detection Current
IDET_10mA
Detection current
--
10
--
mA
Thermal Regulation
Threshold of the Load Switch
TREG_LSW
Optional 100
C to 135C by I2C
(Default value is 100oC)
--
100
--
C
Adapter Detection
D+ Voltage Source
VD+_SRC
0.5
--
0.7
V
VDAT_REF Voltage
VDAT_REF
0.25
--
0.4
V
VLGC Voltage
VLGC
0.8
--
2
V
D- Sink Current
IDN_SINK
50
--
150
A



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