RT6220
Parameter
Current Limit
Current Limit
Switching Frequency
Minimum Off-Time
Protections
OVP Trip Threshold
OVP Propagation Delay
UVP Trip Threshold
UVP Propagation Delay
Reference and Soft-Start
Feedback Reference
Voltage
Soft-Start Time
Enable and UVLO
EN Input High Voltage
EN Hysteresis
EN Input Current
VCC UVLO Rising
VCC UVLO Hysteresis
VCC Regulator
VCC Regulator
VCC Switch Over
Threshold to VBYP
VCC Switch Over
Hysteresis
Switch Over
On-Resistance
Power Good Indicator
PGOOD Threshold From
Lower
PGOOD Low Hysteresis
PGOOD Low to High
Delay
PGOOD Sink Current
Capability
PGOOD Leakage
Current
T
PGDLY
V
PGSINK
I
PGLEAK
Sink 4mA
V
PGOOD
= 5V
V
OUT
rising
V
OUT
falling
86.5
--
--
--
--
91.5
10
0.5
--
--
96.5
--
--
0.4
100
%
%
ms
V
nA
V
VCC
V
BYP
rising edge
4.805
4.4
150
--
5
4.6
200
3
5.295
4.8
400
5
V
V
mV
V
ENH
V
ENHYS
I
EN
V
CCUVLO
V
CCHYS
V
EN
= 2V
V
EN
= 0V
1.25
50
--
--
3.8
75
1.35
200
1
0
4.2
400
1.45
250
--
--
4.45
650
V
mV
A
V
mV
V
REF
T
SS
From EN high to PGOOD high
0.594
1
0.600
1.5
0.606
2
V
ms
V
OVP
T
OVPDLY
V
UVP
T
UVPDLY
With respect to output voltage
With respect to output voltage
120
--
53
--
125
5
58
5
130
--
63
--
%
s
%
s
I
OC
f
SW
t
OFF_MIN
Valley current of low-side switch
7.6
450
--
--
500
200
11.4
550
--
A
kHz
ns
Switching Frequency and Minimum Off Timer
Symbol
Test Conditions
Min
Typ
Max
Unit
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS6220-10
December 2019
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
