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RT5021 数据表(PDF) 10 Page - Richtek Technology Corporation

部件名 RT5021
功能描述  Channels DC/DC PMU with Li-ion Battery Charger
PDF  67 Pages
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制造商  RICHTEK [Richtek Technology Corporation]
网页  http://www.richtek.com
标志 RICHTEK - Richtek Technology Corporation

RT5021 数据表(HTML) 10 Page - Richtek Technology Corporation

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RT5021
10
DS5021-01 April 2013
www.richtek.com
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
©
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
VO2
−LX2B,
P-MOSFET, VO2 = 3.3V
--
200
300
m
Ω
On Resistance of MOSFET
RDS(ON)_2B
LX2B
− GND,
N-MOSFET VO2 = 3.3V
--
150
250
m
Ω
Current Limitation
ILIM_2
Both P-MOSFET (PVD2
− LX2A)
and N-MOSFET (LX2B
− GND)
2
2.5
3
A
Over Voltage Protection at VO2
5.82
6
6.18
V
Under Voltage Protection at FB2
Target voltage is the chosen one
in A4.FB2 [2:0]
--
0.4
--
V
Over Load Protection at FB2
--
Target
− 0.1
--
V
Off Discharge Current at VO2
VO2 = 3.3V, SYS = 3.3V
--
20
--
mA
Discharge Finishing Threshold at
VO2
--
0.1
--
V
CH3 LV Sync Step-Down
Feedback Regulation Voltage at
FB3
A5.FB3 [2:0] = 3’b100
0.788
0.8
0.812
V
Minimum On Time for PSM
--
50
--
ns
Maximum Duty Cycle
FB3 = 0.75V
--
--
100
%
Soft-Start Time
FB3 = 0 to 0.8V
--
4
--
ms
RDS(ON)_P
P-MOSFET, PVD3 = 3.3V
--
200
300
m
Ω
On Resistance of MOSFET
RDS(ON)_N N-MOSFET, PVD3 = 3.3V
--
150
250
m
Ω
Current Limitation
ILIM_3
1.3
1.8
2.4
A
Under Voltage Protection at FB3
0.35
0.4
0.45
V
Over Load Protection at FB3
Target voltage is the chosen one
in A5.FB3 [2:0]
--
Target
− 0.1
--
V
Off Discharge Current at LX3
LX3 = 1V, SYS = 3.3V
--
20
--
mA
Discharge Finishing Threshold at
FB3
--
0.1
--
V
CH4 LV Sync Step-Down
Feedback Regulation Voltage at
FB4
A5.FB4 [2:0] = 3’b100
0.788
0.8
0.812
V
Minimum On Time for PSM
--
50
--
ns
Maximum Duty Cycle
FB4 = 0.75V
--
--
100
%
Soft-Start Time
FB4 = 0 to 0.8V
--
4
--
ms
RDS(ON)_P
P-MOSFET, PVD4 = 3.3V
--
300
400
m
Ω
On Resistance of MOSFET
RDS(ON)_N N-MOSFET, PVD4 = 3.3V
--
200
300
m
Ω
Current Limitation
ILIM_4
1.3
1.8
2.4
A
Under Voltage Protection at FB4
0.35
0.4
0.45
V
Over Load Protection at FB4
Target voltage is the chosen one
in A5.FB4 [2:0]
--
Target
− 0.1
--
V
Off Discharge Current at LX4
LX4 = 1V, SYS = 3.3V
--
20
--
mA
Discharge Finishing Threshold at
FB4
--
0.1
--
V



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