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RT5021 数据表(PDF) 11 Page - Richtek Technology Corporation

部件名 RT5021
功能描述  Channels DC/DC PMU with Li-ion Battery Charger
PDF  67 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

RT5021 数据表(HTML) 11 Page - Richtek Technology Corporation

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RT5021
11
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
CH5 LV Sync Step-Down
Target voltage defined at A6.VOUT5
[3:0] = 4’b1000 to 4’b1111
−1.5
--
1.5
%
Output Voltage Accuracy at
VO5
Target voltage defined at A6.VOUT5
[3:0] = 4’b0001 to 4’b0111
−2
--
2
%
Feedback Regulation Voltage
at FB5
A6.VOUT5 [3:0 ] = 4’b0000
0.788
0.8
0.812
V
Maximum Duty Cycle
--
--
100
%
Soft-Start Time
VO5 = 0V to Target
--
4
--
ms
RDS(ON)_P P-MOSFET, PVD5 = 3.3V
--
400
550
m
Ω
On Resistance of MOSFET
RDS(ON)_N N-MOSFET, PVD5 = 3.3V
--
250
400
m
Ω
Current Limitation
ILIM_5
1
1.5
2
A
Under Voltage Protection at
VO5
--
Target
x 0.5
--
Target voltage is the chosen one in
A6.VOUT5 [3:0] = 0000 (FB5 = 0.8)
--
Target
− 0.1
--
Target voltage is the chosen one in
A6.VOUT5 [3:0] = 0001 to 0111
--
Target
− 0.167
--
Over Load Protection at VO5
Target voltage is the chosen one in
A6.VOUT5 [3:0] = 0111 to 1111
--
Target
− 0.25
--
V
Off Discharge Current at VO5
VO5 = 1.8V, SYS = 3.3V
--
30
--
mA
Discharge Finishing Threshold
at VO5
--
0.1
--
V
CH6 LDO
Input Voltage Range (PVD6)
1.5
--
5.5
V
Quiescent Current into PVD6
PVD6 = 3.3V, IOUT = 0mA
--
--
75
μA
A6.VOUT6 [3:0] = 4’b1000 to
4’b1111
−1.5
--
1.5
%
Regulation Voltage Accuracy
at VO6
A6.VOUT6 [3:0] = 4’b0000 to
4’b0111
-2
--
2
%
Drop Out Voltage
(PVD6-VO6)
IOUT = 300mA, VO6 = 1.3V
--
--
0.15
V
PSRR+
IOUT = 10mA, PVD6 = 3.3V at 1kHz
--
−60
--
dB
Max Output Current
(Current Limit)
PVD6 = 1.5V, VO6 = 1.3V
300
450
600
mA
Off Discharge Current at VO6
SYS = 3.3V
--
--
10
mA
CH7 WLED Driver
Feedback Regulation Voltage
at FB7
(Both Step-Up and Current)
A2.EN7_DIM7 [4:0] = 5’b11111
0.237
0.25
0.263
V
Minimum On Time for PSM
(Step-Up)
--
300
--
ns
Maximum Duty Cycle
(Step-Up mode)
FB7 = 0.15V
91
93
97
%



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