RT5112A
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Low Dropout Voltage Regulator LDO1 and LDO2 (VIN_VIN12 = VOUT_LDO1/VOUT_LDO2 + 1V, VHWEN = 1.2V, IOUT
= 1mA, CIN = 2.2F, COUT = 2.2F)
VRIPPLE_LDO1
VRIPPLE_LDO2
VTRAN_LDO1
VTRAN_LDO2
/
IOUT = 0 to IOUT(MAX)
OUT_LDO1/VOUT_LDO2 = 2.8V
OUT = 1mA to 150mA, 150mA/s,
VOUT_LDO1/VOUT_LDO2 = 2.8V
IN_VIN12 = 3.4V, f = 1kHz, IOUT
,
Output Ripple Voltage
--
--
--
--
10
50
mV
mV
V
/
I
Load Transient
V
=
70
--
--
100mA, VOUT_LDO1/VOUT_LDO2
2.8V
=
Power Supply Rejection PSRR_LDO1
/
dB
Ratio
PSRR_LDO2
VIN_VIN12 = 3.4V, f = 100kHz, IOUT
40
--
--
--
--
= 100mA, VOUT_LDO1/VOUT_LDO2
= 2.8V
eN_LDO1
/
100Hz to 100kHz, IOUT = 100mA,
Output Noise Voltage
50
V
eN_LDO2
VOUT_LDO1/VOUT_LDO2 = 2.8V
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)
VRIPPLE_LDO3
VRIPPLE_LDO4
VTRAN_LDO3
VTRAN_LDO4
/
IOUT = 0 to IOUT(MAX), VOUT_LDO3
/ VOUT_LDO4 = 1.8V
Output Ripple Voltage
--
--
--
--
10
50
mV
/
Load Transient
mV
I
OUT = 1mA to 150mA, 150mA/s
IN_VIN3 / VIN_VIN4 = 1.95V,
V
50
--
--
f = 1kHz, IOUT = 100mA,
VOUT_LDO3/VOUT_LDO4 = 1.8V
Power Supply Rejection PSRR_LDO3
/
dB
Ratio
PSRR_LDO4
VIN_VIN3 / VIN_VIN4 = 1.95V,
f = 10kHz, IOUT = 100mA,
40
--
--
--
--
V
OUT_LDO3/VOUT_LDO4 = 1.8V
100Hz to 100kHz, IOUT = 100mA,
OUT_LDO3/VOUT_LDO4
2.8V/1.8V
eN_LDO3/
eN_LDO4
Output Noise Voltage
50
V
V
=
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS5112A-02 August 2019
www.richtek.com
13
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
