RT6248B
Parameter
On Resistance
High-Side Switch On-Resistance R
DS(ON)_H
Low-Side Switch On-Resistance
Discharge FET Ron
Current Limit
ILMT = ”0”
Bottom FET Current Limit
I
LIM
ILMT = Floating
ILMT = ”1”
ILMT Rising Threshold
ILMT Falling Threshold
Oscillator Frequency
Oscillator Frequency
On-Time Timer Control
Minimum On-Time
Minimum Off-Time
Soft-Start
Power Good Enable Delay Time
Soft-Start Time
UVLO
Input UVLO Threshold
UVLO Hysteresis
Output Over-Voltage Protection
Output Over-Voltage Threshold
Output Over-Voltage Hysteresis
Output Over-Voltage Delay Time
Output Under-Voltage Protection
Output Under-Voltage Threshold
Output Under-Voltage Delay
Time
UV Blank Time
Power Good
Power Good Threshold
Power Good Hysteresis
Power Good Delay Time
V
OUT
rising (Good)
88
--
--
90
15
10
92
--
--
%
%
s
V
FB
falling
FB forced below UV threshold
From EN high
--
--
--
60
20
1.65
--
--
--
%
s
ms
V
OUT
rising
115
--
--
120
3
20
125
--
--
%
%
s
V
UVLO
V
UVLO_HYS
Wake up
--
--
--
0.3
4.4
--
V
V
t
SS
From EN high to PGOOD high
From 10% to 90% V
OUT
1.3
--
1.65
0.4
2
--
ms
ms
t
ON_MIN
t
OFF_MIN
V
IN
= V
IN(MAX)
--
--
50
400
--
--
ns
ns
f
OSC
--
0.5
--
MHz
V
ILMTH
V
ILMTL
8
10
12
V
CC
0.8
--
--
--
--
--
--
--
--
--
V
CC
0.8
V
V
A
R
DS(ON)_L
R
DISCHG
--
--
--
24
12
50
--
--
--
m
m
Symbol
Test Conditions
Min
Typ
Max
Unit
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS6248B-01 May 2018
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
