RT5112A
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Leak current, HWEN = H, VIN_SYS
= VIN_B1 = VIN_B2 = VIN_VIN12
VIN_VIN3 = VIN_VIN4 = 2.5V to
5.5V, 40°C to 85°C
=
Leakage Current
--
--
1.5
A
ILEAK
VSYS Under-Voltage
Lockout Threshold Rising
UVLO
--
--
2.35
100
2.45
--
V
Hysteresis Voltage of
UVLO
UVLO_H
mV
HWEN Control
HWEN Low Level Input
Voltage
--
1.2
--
--
--
1
0.4
--
V
V
VIL
HWEN High Level Input
Voltage
VIH
REN
HWEN Pull Down
Resistor
-
M
Step Down Converter Buck1 (VIN_B1 = 3.8V, C1 = C2 = 10F, L1 = 1H)
Input Voltage Range
Output Voltage Range
Output Voltage Step
2.5
0.6
--
--
--
5.5
3.3
--
V
V
VIN_B1
VOUT_BUCK1
12.5
mV
All output range of VOUT_BUCK1
,
Output Voltage Accuracy
Switching Frequency
--
2
%
2
2
VOUT_ACCBUCK1
IOUT = IOUT(MAX)
VOUT_BUCK1 = 1.1V, operating
2.5
3
MHz
m
fSW_BUCK1
under CCM
P-Channel MOSFET On
Resistance
From VINB1 pin to LXB1 pin
--
150
200
RON_HG_BUCK1
N-Channel MOSFET On
Resistance
From LXB1 pin to GNDB1 pin
--
--
70
--
140
100
140
m
%
RON_LG_BUCK1
DMAX_BUCK1
RDIS_BUCK1
Maximum Duty Cycle
Output Discharge
Resistor
80
100
VOUT_
Over-Voltage Rising
Threshold Detection
--
--
--
--
--
--
--
--
V
V
V
V
OVP_R_BUCK1
OVP_F_BUCK1
UVP_R_BUCK1
UVP_F_BUCK1
BUCK1
x 120%
VOUT_
Over-Voltage Falling
Threshold Detection
BUCK1
x 109%
VOUT_
Under-Voltage Rising
Threshold Detection
BUCK1
x 92%
VOUT_
Under-Voltage Falling
Threshold Detection
BUCK1
x 80%
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©
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS5112A-02 August 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
