RT6340
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
1.3
VIN Under-Voltage Lockout
Threshold
VIN falling
Shutdown Current
Quiescent Current
VEN = 0V
4
A
A
VEN = 2V, VFB = 0.83V, not
switching
IQ
--
90
130
Enable Voltage
Enable Threshold Voltage
Enable to COMP Active
VTH_EN
1.15
--
1.25
450
3.8
1.36
--
V
VIN = 12V, TA = 25C
VTH_EN + 50mV
s
A
A
A
--
--
Pull-Up Current
IEN
VTH_EN 50mV
--
0.9
--
Hysteresis Current
Reference Voltage
Reference Voltage
Internal MOSFET
IEN_Hys
--
2.9
--
VREF
0.788
--
0.8
0.812
300
V
High-Side Switch On-
Resistance
RDS(ON)_H
VIN = 12V, VBOOT VSW = 5V
170
m
nA
Error Amplifier
Input Current
--
--
50
97
--
--
Normal operation
2A < ICOMP < 2A
V
COMP = 1V
Error Amplifier Trans-
Conductance
gm
A/V
During SS,
2A < ICOMP < 2A
--
26
--
VCOMP = 1V, VFB = 0.4V
10000
2700
7
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
--
2
--
A/V
Current Limit
fSW = 580kHz,
Current Limit
0.72
0.9
1.08
A
VOUT = 5V
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS6340-00 September 2019
www.richtek.com
11
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