RT6246B
Absolute Maximum Ratings
(Note 1)
Supply Voltage, VIN --------------------------------------------------------------------------------------------
−0.3V
to 20V
Enable Pin Voltage, EN ---------------------------------------------------------------------------------------
−0.3V
to 20V
FB Pin Voltage, FB --------------------------------------------------------------------------------------------
−0.3V
to 4.5V
Switch Voltage, LX ---------------------------------------------------------------------------------------------
−0.3V
to (V
IN
+ 0.3V)
<30ns -------------------------------------------------------------------------------------------------------------
−5V
to 21V
Boot Voltage, BOOT -------------------------------------------------------------------------------------------
(V
LX
−
0.3V) to (V
LX
+ 6V)
Other I/O Pin Voltages ----------------------------------------------------------------------------------------
−0.3V
to 6V
Power Dissipation, P
D
@ T
A
= 25°C
UQFN-12HL 3x3 (FC) ----------------------------------------------------------------------------------------- 2.29W
Package Thermal Resistance (Note 2)
UQFN-12HL 3x3 (FC),
θ
JA
------------------------------------------------------------------------------------ 43.6°C/W
Junction Temperature ------------------------------------------------------------------------------------------ 150°C
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------- 260°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 ------------------------------------------------------------------------------------- 4.5V to 18V
Ambient Temperature Range ---------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
(V
IN
= 12V, T
A
= 25°C, unless otherwise specified)
Parameter
Input Voltage Range
Supply Current
Supply Current (Shutdown)
Supply Current (Quiescent)
Logic Threshold
EN Input Low Voltage
EN Input High Voltage
Output Voltage
VCC Regulator Voltage
Feedback Voltage
Feedback Reference Voltage
Feedback Current
On Resistance
High-Side Switch On Resistance
Low-Side Switch On Resistance
Symbol
V
IN
Test Conditions
Min
4.5
Typ
--
Max
18
Unit
V
A
A
I
SHDN
I
Q
V
EN
= 0
I
OUT
= 0, V
FB
= V
REF
x 105%
--
--
5
130
10
--
V
ENL
V
ENH
0.4
0.45
0.54
0.625
0.68
0.8
V
V
V
CC
--
5
--
V
V
REF
I
FB
V
FB
= 4V
0.594
50
0.6
--
0.606
50
V
nA
R
DS(ON)_H
R
DS(ON)_L
--
--
30
15
--
--
m
m
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6246B-01 March 2018
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
