RT6543A/B
Absolute Maximum Ratings
(Note 1)
VSYS to PGND -----------------------------------------------------------------------------------------------------------
−0.3V
to 28V
VCC to PGND -------------------------------------------------------------------------------------------------------------
−0.3V
to 6.5V
RGND to PGND -----------------------------------------------------------------------------------------------------------
−0.3V
to 0.3V
BOOT to PH ---------------------------------------------------------------------------------------------------------------
−0.3V
to 6.5V
LGATE to PGND
DC -----------------------------------------------------------------------------------------------------------------------------
−0.3V
to 6.8V
<100ns -----------------------------------------------------------------------------------------------------------------------
−2V
to 7.5V
PH to PGND
DC -----------------------------------------------------------------------------------------------------------------------------
−0.3V
to 30V
<100ns -----------------------------------------------------------------------------------------------------------------------
−10V
to 35V
UGATE to PGND
DC -----------------------------------------------------------------------------------------------------------------------------
−0.3V
to 36.8V
<100ns -----------------------------------------------------------------------------------------------------------------------
−10V
to 41.8V
Other Pins -------------------------------------------------------------------------------------------------------------------
−0.3V
to 6.8V
Power Dissipation, P
D
@ T
A
= 25°C
WQFN-20L 3x3 ------------------------------------------------------------------------------------------------------------
Package Thermal Resistance (Note 2)
WQFN-20L 3x3,
θ
JA
-------------------------------------------------------------------------------------------------------
WQFN-20L 3x3,
θ
JC
------------------------------------------------------------------------------------------------------
Junction Temperature -----------------------------------------------------------------------------------------------------
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------
Storage Temperature Range --------------------------------------------------------------------------------------------
ESD Susceptibility (Note 3)
HBM (Human Body Model) ----------------------------------------------------------------------------------------------
(Note 4)
3.33W
30°C/W
7.5°C/W
150°C
260°C
−65°C
to 150°C
2kV
Recommended Operating Conditions
VCC Input Voltage --------------------------------------------------------------------------------------------------------- 4.5V to 5.5V
VSYS Input Voltage ------------------------------------------------------------------------------------------------------ 3V to 24V
Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 125°C
Electrical Characteristics
(V
CC
= 5V, V
SYS
= 7.4V, T
A
= 25°C, unless otherwise specified)
Parameter
Supply Voltage VCC
Supply Voltage
Symbol
Test Conditions
Min
Typ
Max
Unit
V
CC
I
SHDN
V
EN
= 0V
V
EN
= 5V, VID = 00
V
EN
= 5V, no switching
4.5
--
--
--
5
5
40
0.3
5.5
--
--
0.55
V
A
A
mA
Supply Current
I
DACOFF
I
VCC
Copyright
©
2020 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6543A/B-01 March 2020
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
