RT6242A/B
Parameter
Current Limit
Current Limit
Thermal Shutdown
Thermal Shutdown Threshold
On-Time Timer Control
On-Time
Minimum On-Time
Minimum Off-Time
Soft-Start
SS Charge Current
UVLO
UVLO Threshold
Hysteresis
Power Good
PGOOD Threshold
PGOOD Sink Current
OVP and UVP Protection
OVP Threshold
OVP Propogation Delay
UVP Threshold
UVP Hysteresis
UVP Propogation Delay
R
RT
= 106k
Switching Frequency
f
SW
R
RT
= 150k
R
RT
= 250k
115
--
55
--
--
600
430
250
120
10
60
17
250
700
500
300
125
--
65
--
--
800
570
350
kHz
%
s
%
%
s
FB Rising
FB Falling
PGOOD = 0.1V
85
--
10
90
80
20
95
--
--
%
mA
Wake Up V
IN
4
--
4.2
0.5
4.4
--
V
V
SS
= 0V
5
6
7
A
t
ON
t
ON(MIN)
t
OFF(MIN)
V
IN
= 12V, V
OUT
= 1.05V,
R
RT
= 150k
--
--
--
200
60
230
--
--
--
ns
ns
ns
T
SD
--
150
--
C
I
LIM
R
LIM
= 66k
13
16
--
A
Symbol
Test Conditions
Min
Typ
Max
Unit
Note 1.
Stresses beyond those listed
“Absolute
Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2.
θ
JA
is measured at T
A
= 25°C on a high effective thermal conductivity four-layer test board.
Note 3.
Devices are ESD sensitive. Handling precaution is recommended.
Note 4.
The device is not guaranteed to function outside its operating conditions.
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6242A/B-05 April 2016
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
