RT7285/A
Absolute Maximum Ratings (Note 1)
VINtoGND ----------------------------------------------------------------------------------------------------- −0.3V to 20V
SW to GND ---------------------------------------------------------------------------------------------------- −0.3V to (VIN + 0.3V)
< 10ns ---------------------------------------------------------------------------------------------------------- −5V to 25V
BOOT toGND ------------------------------------------------------------------------------------------------- (VSW − 0.3V) to (VSW + 6V)
Other Pins------------------------------------------------------------------------------------------------------ −0.3V to 6V
Power Dissipation, PD @ TA = 25°C
SOT-23-6 -------------------------------------------------------------------------------------------------------0.625W
TSOT-23-6 ------------------------------------------------------------------------------------------------------0.625W
Package Thermal Resistance (Note 2)
SOT-23-6, θJA --------------------------------------------------------------------------------------------------160°C/W
SOT-23-6, θJC -------------------------------------------------------------------------------------------------15°C/W
TSOT-23-6, θJA ------------------------------------------------------------------------------------------------160°C/W
TSOT-23-6, θJC ------------------------------------------------------------------------------------------------15°C/W
Lead Temperature (Soldering, 10 sec.)------------------------------------------------------------------260°C
JunctionTemperature----------------------------------------------------------------------------------------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
(VIN = 12V, TA = 25°C, unless otherwise specified)
Parameter
Shutdown Current
Symbol
ISHDN
Test Conditions
VEN = 0V
Min
Typ
Max
Unit
μA
--
--
4
Quiescent Current
IQ
VEN = 2V, VFB = 1V
VBOOT−SW = 4.8V
VIN = 5V
--
--
0.5
230
130
2.2
500
90
--
--
mA
High-Side RDS(ON)_H
Switch-On Resistance
mΩ
Low-Side
RDS(ON)_L
ILIM
--
--
Current Limit
Valley Current
1.7
--
2.8
--
A
kHz
%
Oscillator Frequency
Maximum Duty Cycle
Minimum On-Time
fSW
DMAX
tON
--
--
--
60
--
ns
Feedback Threshold Voltage
VFB
591
1.5
--
600
--
609
--
mV
Logic-High VEN_H
Logic-Low VEN_L
EN Input Threshold
V
--
0.4
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
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