RT7241A
Absolute Maximum Ratings (Note 1)
VIN to PGND -------------------------------------------------------------------------------------------- −0.3V to 27V
SW to PGND -------------------------------------------------------------------------------------------- −0.3V to 27.3V
BOOT to PGND ----------------------------------------------------------------------------------------- −0.6V to 33.3V
S3,VDDQ,VLDOIN,VTT,VTTSNS,PGOOD,VDD,FB,CS,S5 toGND ------------------------ −0.3V to 6V
PGNDtoGND ------------------------------------------------------------------------------------------- −0.3V to 0.3V
PGNDto VTTGND -------------------------------------------------------------------------------------- −0.3V to 0.3V
GNDtoVTTGND ---------------------------------------------------------------------------------------- −0.3V to 0.3V
PowerDissipation, PD @ TA = 25°C
UQFN-18L3x4 (FC) ------------------------------------------------------------------------------------3.03W
Package Thermal Resistance (Note 2)
UQFN-18L 3x4 (FC), θJA ------------------------------------------------------------------------------33°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 3)
Supply Input Voltage, VIN ----------------------------------------------------------------------------4.5V to 23V
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
Supply Current
Symbol
Test Conditions
Min
Typ
Max
Unit
FB forced above the regulation
point, VS5 = 2V, VS3 = 0V
Quiescent Supply Current
80
100
130
A
IVLDOIN BIAS Current
IVLDOIN Standby Current
Shutdown Current
VS5 = VS3 = 2V, VTT = no load
VS5 = 2V, VS3 = 0V, VTT = no load
VS5 = VS3 = 0V
--
--
--
1
--
A
A
A
0.1
2.5
10
10
PWM Converter
VDDQ Voltage Range
VDDQ Input Resistance
0.6
--
--
1.5
--
V
100
k
VDDQ Shutdown Discharge
Resistance
VS5 = 0V
--
15
--
Switch On-Resistance
RDS(ON)_H VBOOT VPHASE = 5V
--
--
17
--
--
Switch On-Resistance
m
RDS(ON)_L
4.5
Current Limit
Valley current of low-side switch,
RCS = 165k
Current Limit
ILIM
--
16
--
A
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4
DS7241A-02 January 2017
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
