RT5112A
Parameter
Symbol
Test Conditions
Min
Typ
V
OUT_
LDO1
/
--
VOUT_
LDO2
Max
Unit
Over-Voltage Falling
Threshold Detection
OVP
_F_LDO1
/
OVP
_F_LDO2
--
V
Under-Voltage Rising
Threshold Detection
UVP
_R_LDO1
/
UVP
_R_LDO2
x 110%
V
OUT_
LDO1
/
--
VOUT_
LDO2
--
V
x 90%
Under-Voltage Falling
Threshold Detection
V
OUT_
LDO1
/
V
OUT_
LDO2
UVP
_F_LDO1
/
UVP
_F_LDO2
--
--
V
x 80%
Quiescent Current
Short Circuit Current
Limit
Current Limit
I
Q_LDO1
/I
Q_LDO2
I
sc_LDO1
/
I
sc_LDO2
I
Limt_LDO1
/
I
Limt_LDO2
t
scp_ON_LDO1
/
t
scp_ON_LDO2
t
scp_OFF_LDO1
/
t
scp_OFF_LDO2
0x01[3:2] = 11
(LDO1 current limit = 360mA),
0x02[3:2] = 11
(LDO2 current limit = 360mA)
HWEN = 1.2V, I
OUT
= 0mA
HWEN = 0.3V (disable)
--
--
360
22
0.1
--
27
1
--
A
mA
360
415
470
mA
Short Protection On
Timer
Short Protection Off
Timer
--
--
2
40
--
--
ms
ms
Low Dropout Voltage Regulator LDO3 and LDO4 (V
IN_VIN3
/V
IN_VIN4
= V
OUT_LDO3
/V
OUT_LDO4
+ 1V, V
HWEN
=
1.2V, I
OUT
= 1mA, C
IN
= 2.2F, C
OUT
= 2.2F)
Input Voltage Range
Output Voltage Range
Output Voltage Step
Maximum Output Current
V
IN_VIN3
/
V
IN_VIN4
V
OUT_LDO3
/
V
OUT_LDO4
I
OUT_LDO3
/
I
OUT_LDO4
t
SS_LDO3/
Time from V
OUT_LDO3
/
V
OUT_LDO4
start rising to 90%
nominal value, V
OUT_LDO3
/
V
OUT_LDO4
= 1.8V, no load
All output range of V
OUT_LDO3
/
V
OUT_LDO4
, I
OUT
= I
OUT(MAX)
1.9
0.6
--
300
--
1.8
25
--
5.5
3.775
--
--
V
V
mV
mA
Soft-Start Time
t
SS_LDO4
V
OUT_ACCLDO3
/
V
OUT_ACCLDO4
--
--
150
s
DC Output Voltage
Accuracy
2
--
2
%
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5112A-02 August 2019
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
