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RK818 Datasheet(PDF) 18 Page - Rockchip Electronics Co., Ltd

Part # RK818
Description  Input range: 3.8V - 6V for USB input 2.7V - 4.5V for BAT input
PDF  93 Pages
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Manufacturer  ROCKCHIP [Rockchip Electronics Co., Ltd]
Direct Link  http://www.rock-chips.com/a/en/index.html
Logo ROCKCHIP - Rockchip Electronics Co., Ltd

RK818 Datasheet(HTML) 18 Page - Rockchip Electronics Co., Ltd

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RK818 Datasheet
Rev 1.0
Copyright ©2017 Fuzhou Rockchip Electronics Co., Ltd.
18
PARAMETERS
SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
CH1,2,3,4( Tj=25
℃ )
Switching
Frequency,
CH5( Tj=25
℃ )
fSW
0.9
1
1.1
MHz
LOGIC INPUT
Input
LOW-Level
Voltage
(VDDIO)
VIL
0.3xVDDI
O
V
Input
HIGH-Level
Voltage
(VDDIO)
VIH
0.7xVDDI
O
V
LOGIC OUTPUT
LOW-Level Output Voltage,
3.0 mA sink current
VOL
0.4
V
HIGH-Level Output Voltage,
3.0 mA source current
VOH
VDDIO-
0.4
V
NRESPWON
pin
LOW-Level
Output Voltage, 3.0mA sink
current
VOL(NRES)
0.4
V
CLK32KOUT1 pin LOW-Level
Output Voltage, 3.0mA sink
current
VOL(CLKO1)
0.4
V
CLK32KOUT2 pin LOW-Level
Output Voltage, 3.0mA sink
current
VOL(CLKO2)
0.4
CLK32KOUT2 pin HIGH-Level
Output Voltage, 3.0mA source
current
VOH(CLKO2)
VDDIO-
0.4
V
CH1：BUCK DC-DC CONVERTER(BUCK1)
Input supply voltage range
VINPUT1
2.7
5.5
V
Voltage Adjustable Range, 6bit VFB1
Step=12.5mV
0.7125
1.500
V
Output voltage transition rate
BUCK1_RATE=00
BUCK1_RATE=01
BUCK1_RATE=10
BUCK1_RATE=11
2
3
4.5
6
mV/us
Power Good threshold (Vout
rising)
VPG1
93
%
Output
under
voltage
lockout(Vout falling)
VUV1
85
%
Output over voltage lockout
(Vout rising)
VOV1
117
%
Preset
Voltage,
Default( Tj=25
℃ )
VFB1(Default)
1.078
1.100
1.122
V
Preset Voltage, Default(-10
℃≦
Tj
≦+85℃)
VFB1(Default)
1.067
1.100
1.133
V
Load
Regulation,
IOUT1
=
200mA to 4A
0.1
%/A



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