RT5112A
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
VOUT_
/
LDO1
Over-Voltage Falling
Threshold Detection
OVP_F_LDO1
/
--
--
V
VOUT_
OVP_F_LDO2
LDO2
x 110%
VOUT_
/
LDO1
Under-Voltage Rising
Threshold Detection
UVP_R_LDO1
/
--
--
--
--
V
V
VOUT_
UVP_R_LDO2
LDO2
x 90%
VOUT_
/
LDO1
Under-Voltage Falling
Threshold Detection
UVP_F_LDO1
/
VOUT_
UVP_F_LDO2
LDO2
x 80%
--
--
22
27
1
HWEN = 1.2V, IOUT = 0mA
HWEN = 0.3V (disable)
Quiescent Current
A
I
Q_LDO1/IQ_LDO2
0.1
Short Circuit Current
Limit
Isc_LDO1
/
360
--
--
mA
Isc_LDO2
0x01[3:2] = 11
ILimt_LDO1
/
(LDO1 current limit = 360mA),
0x02[3:2] = 11
(LDO2 current limit = 360mA)
Current Limit
360
415
470
mA
ILimt_LDO2
Short Protection On
Timer
tscp_ON_LDO1
tscp_ON_LDO2
tscp_OFF_LDO1
tscp_OFF_LDO2
/
--
--
2
--
--
ms
ms
Short Protection Off
Timer
/
40
Low Dropout Voltage Regulator LDO3 and LDO4 (VIN_VIN3/VIN_VIN4 = VOUT_LDO3/VOUT_LDO4 + 1V, VHWEN
=
1.2V, IOUT = 1mA, CIN= 2.2F, COUT = 2.2F)
VIN_VIN3
/
Input Voltage Range
1.9
--
5.5
V
VIN_VIN4
Output Voltage Range
Output Voltage Step
0.6
--
1.8
25
3.775
--
V
VOUT_LDO3
/
VOUT_LDO4
mV
IOUT_LDO3
/
Maximum Output Current
300
--
--
--
--
150
2
mA
s
%
IOUT_LDO4
Time from VOUT_LDO3
OUT_LDO4 start rising to 90%
nominal value, VOUT_LDO3
OUT_LDO4 = 1.8V, no load
All output range of VOUT_LDO3
OUT_LDO4, IOUT = IOUT(MAX)
/
tSS_LDO3/
V
Soft-Start Time
--
/
tSS_LDO4
V
DC Output Voltage
Accuracy
VOUT_ACCLDO3
/
/
2
VOUT_ACCLDO4
V
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 ]
