RT6258B/C
Parameter
Output Voltage
Output Voltage Setpoint
VCC Regulator Voltage
On Resistance
High-Side Switch On Resistance
Low-Side Switch On Resistance
Discharge FET Ron
Current Limit
Top FET Current Limit
Bottom FET Current Limit
Oscillator Frequency
Oscillator Frequency
On-Time Timer Control
Minimum On-Time
Minimum Off-Time
Ultrasonic Mode
Operation Period
Soft-Start
Soft-Start Time
Output Rising 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
Copyright
©
2019 Richtek Technology Corporation. All rights reserved.
Symbol
Test Conditions
RT6258B
RT6258C
Min
3.267
5.049
4.95
14
8
40
--
9
Typ
3.3
5.1
5
20
10
50
15
10.4
0.5
0.75
50
200
30
1.65
0.6
--
--
0.3
120
3
20
60
20
1.65
90
15
10
Max
3.333
5.151
5.05
26
12
63
--
11.8
0.58
0.9
80
300
40
2
--
4.5
5.4
--
125
--
--
64
--
--
92
--
--
Unit
V
OUT
V
CC
R
DS(ON)_H
R
DS(ON)_L
R
DIS
I
LIM_T
I
LIM_B
V
V
m
m
A
A
MHz
MHz
ns
ns
s
ms
ms
f
OSC
RT6258B
RT6258C
V
IN
= V
IN(MAX)
0.42
0.62
40
150
20
t
ON_MIN
t
OFF_MIN
t
USM
t
SS
t
R
From EN high to PGOOD high
From 10% to 90% V
OUT
Wake up RT6258B
Wake up RT6258C
1.3
--
--
--
--
V
UVLO
V
HYS
V
V
%
%
s
%
s
ms
%
%
s
V
OUT
rising
115
--
--
V
FB
falling
FB forced below UV threshold
From EN high
V
TH_PGLH
V
TH_PGLH
V
OUT
rising (Good)
54
--
--
88
--
--
is a registered trademark of Richtek Technology Corporation.
DS6258B/C-02
October 2019
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
