RT7285/A
Absolute Maximum Ratings
(Note 1)
VIN to GND -----------------------------------------------------------------------------------------------------
−0.3V
to 20V
SW to GND ----------------------------------------------------------------------------------------------------
−0.3V
to (V
IN
+ 0.3V)
< 10ns ----------------------------------------------------------------------------------------------------------
−5V
to 25V
BOOT to GND ------------------------------------------------------------------------------------------------- (V
SW
−
0.3V) to (V
SW
+ 6V)
Other Pins ------------------------------------------------------------------------------------------------------
−0.3V
to 6V
Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-6 ------------------------------------------------------------------------------------------------------- 0.625W
TSOT-23-6 ------------------------------------------------------------------------------------------------------ 0.625W
Package Thermal Resistance (Note 2)
SOT-23-6,
θ
JA
-------------------------------------------------------------------------------------------------- 160°C/W
SOT-23-6,
θ
JC
------------------------------------------------------------------------------------------------- 15°C/W
TSOT-23-6,
θ
JA
------------------------------------------------------------------------------------------------ 160°C/W
TSOT-23-6,
θ
JC
------------------------------------------------------------------------------------------------ 15°C/W
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------ 260°C
Junction Temperature ---------------------------------------------------------------------------------------- 150°C
Storage Temperature Range -------------------------------------------------------------------------------
−65°C
to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Model) --------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions
(Note 4)
Supply Input Voltage, VIN ---------------------------------------------------------------------------------- 4.3V to 18V
Junction Temperature Range -------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
(V
IN
= 12V, T
A
= 25°C, unless otherwise specified)
Parameter
Shutdown Current
Quiescent Current
Switch-On Resistance
Current Limit
Oscillator Frequency
Maximum Duty Cycle
Minimum On-Time
Feedback Threshold Voltage
EN Input Threshold
High-Side
Low-Side
Symbol
I
SHDN
I
Q
R
DS(ON)_H
R
DS(ON)_L
I
LIM
f
SW
D
MAX
t
ON
V
FB
V
EN_L
Logic-High V
EN_H
Logic-Low
Test Conditions
V
EN
= 0V
V
EN
= 2V, V
FB
= 1V
V
BOOT−SW
= 4.8V
V
IN
= 5V
Valley Current
Min
--
--
--
--
1.7
--
--
--
591
1.5
--
Typ
--
0.5
230
130
2.2
500
90
60
600
--
--
Max
4
--
--
--
2.8
--
--
--
609
--
0.4
Unit
μA
mA
mΩ
A
kHz
%
ns
mV
V
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS7285/A-03 March 2018
www.richtek.com
3
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
