RT6343
Electrical Characteristics
(VIN = 12V, TA = TJ = 25°C, unless otherwise specified)
Parameter
Supply Voltage
Symbol
Test Conditions
Min
Typ
Max
Unit
Input Operating Voltage
VIN
After soft-start is finished
VIN rising
4
--
42
4.5
4
V
V
VUVLOH
VUVLOL
ISHDN
4.1
3.8
--
4.3
3.9
2.25
VIN Under-Voltage Lockout
Threshold
VIN falling
Shutdown Current
Quiescent Current
VEN = 0V
5
A
A
VEN = 2V, VFB = 0.83V, not
IQ
--
100
135
switching
Enable Voltage
Enable Threshold Voltage
Enable to COMP Active
VTH_EN
1.1
--
1.2
540
4.6
1.2
3.4
1.3
--
V
VIN = 12V, TA = 25C
VTH_EN + 50mV
s
A
A
A
--
--
Pull-Up Current
IEN
VTH_EN 50mV
0.58
2.2
1.8
4.5
Hysteresis Current
Reference Voltage
Reference Voltage
Internal MOSFET
IEN_Hys
VREF
0.792
--
0.8
80
0.808
150
V
High-Side Switch On-
Resistance
RDS(ON)_H
VIN = 12V, VBOOT VSW = 5V
m
nA
Error Amplifier
Input Current
--
--
50
--
--
Normal operation
2A < ICOMP < 2A
VCOMP = 1V
440
Error Amplifier Trans-
Conductance
gm
A/V
During SS,
2A < ICOMP < 2A
VCOMP = 1V, VFB = 0.4V
--
77
--
10000
2500
30
Error Amplifier DC Gain
Error Amplifier Bandwidth
Source/Sink Current
VFB = 0.8V
--
--
--
--
--
--
V/V
kHz
A
VCOMP = 1V, 100mV overdrive
COMP to Current Sense
Trans-Conductance
gm_cs
ILIM
--
12
--
A/V
Current Limit
f
SW = 500kHz,
Current Limit
4.675
5.5
6.325
A
VOUT = 5V
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS6343-00 October 2019
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11
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