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 to GND ------------------------
−0.3V
to 6V
PGND to GND -------------------------------------------------------------------------------------------
−0.3V
to 0.3V
PGND to VTTGND --------------------------------------------------------------------------------------
−0.3V
to 0.3V
GND to VTTGND ----------------------------------------------------------------------------------------
−0.3V
to 0.3V
Power Dissipation, P
D
@ T
A
= 25°C
UQFN-18L 3x4 (FC) ------------------------------------------------------------------------------------ 3.03W
Package Thermal Resistance (Note 2)
UQFN-18L 3x4 (FC),
θ
JA
------------------------------------------------------------------------------ 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
(Note 3)
Recommended Operating Conditions
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
(V
IN
= 12V, T
A
= 25°C, unless otherwise specified)
Parameter
Supply Current
Quiescent Supply Current
I
VLDOIN
BIAS Current
I
VLDOIN
Standby Current
Shutdown Current
PWM Converter
VDDQ Voltage Range
VDDQ Input Resistance
VDDQ Shutdown Discharge
Resistance
Switch On-Resistance
Switch On-Resistance
Current Limit
Current Limit
Symbol
Test Conditions
FB forced above the regulation
point, V
S5
= 2V, V
S3
= 0V
V
S5
= V
S3
= 2V, VTT = no load
V
S5
= 2V, V
S3
= 0V, VTT = no load
V
S5
= V
S3
= 0V
Min
Typ
Max
Unit
80
--
--
--
0.6
--
100
1
0.1
2.5
--
100
15
130
--
10
10
1.5
--
--
A
A
A
A
V
k
V
S5
= 0V
--
R
DS(ON)_H
V
BOOT
V
PHASE
= 5V
R
DS(ON)_L
Valley current of low-side switch,
R
CS
= 165k
--
--
17
4.5
--
--
m
I
LIM
--
16
--
A
Copyright
©
2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS7241A-02 January 2017
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
