RT6343
Parameter
Symbol
Test Conditions
Min
Typ Max Unit
On-Time Timer Control
Minimum On-Time
tON_MIN
IOUT = 1A
--
--
135
ns
Timing Resistor and External Clock
Switching Frequency 1
Switching Frequency 2
Switching Frequency 3
SYNC Frequency Range
Minimum Sync Pulse Width
fSW1
fSW2
fSW3
RRT/SYNC = 1M
90
105
500
120
550
kHz
kHz
RRT/SYNC = 200k
RRT/SYNC = 37.4k
External clock
450
2200 2450 2700 kHz
--
0.3
--
2.2
--
MHz
ns
20
--
VIH_SYNC
VIL_SYNC
1.55
1.2
2
SYNC Threshold Voltage
V
0.5
--
RT/SYNC Falling Edge to SW
Rising Edge Delay
--
70
--
ns
Soft-Start and Tracking
Internal Charge Current
SS/TR to FB Offset
ISS
VSS/TR = 0.4V, RT6343GQW
VSS/TR = 0.4V, RT6343GQW
98% nominal, RT6343GQW
VFB = 0V, RT6343GQW
--
--
--
--
1.7
42
--
--
--
--
A
mV
V
SS/TR-to-Reference Crossover
SS/TR Discharge Voltage
Internal Soft-Start Time
Soft-Start Period
1.16
54
mV
10% to 90%, RT6343GSP
1.4
2
2.6
ms
Power Good
V
FB rising, % of VREF, PGOOD
VTH_PGLH1
VTH_PGHL1
VTH_PGHL2
VTH_PGLH2
90
105
88
94
109
92
98
113
96
from low to high, RT6343GQW
VFB rising, % of VREF, PGOOD
from high to low, RT6343GQW
Power Good Threshold
%
VFB falling, % of VREF, PGOOD
from high to low, RT6343GQW
VFB falling, % of VREF, PGOOD
102
--
106
2
110
--
from low to high, RT6343GQW
Power Good Hysteresis
VFB falling, RT6343GQW
%
VPGOOD = 5.5V, TA = 25°C,
RT6343GQW
Power Good Leakage Current
ILK_PGOOD
--
10
500
nA
IPGOOD = 3mA, VFB < 0.79V,
RT6343GQW
On-Resistance
--
--
45
--
2
VPGOOOD < 0.5V, IPGOOD = 100A,
Minimum VIN for defined output
0.9
V
RT6343GQW
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
12
DS6343-00 October 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
