RT8567A
Absolute Maximum Ratings (Note 1)
z VINtoGND------------------------------------------------------------------------------------------------------------------ −0.3V to 26.5V
z EN, PWM, VDC, ISET, COMP, RT to GND -------------------------------------------------------------------------- −0.3V to 26.5V
z LXtoGND ------------------------------------------------------------------------------------------------------------------- −0.3V to 48V
z OVP, (CH1 to CH6) toGND --------------------------------------------------------------------------------------------- −0.3V to 48V
z Power Dissipation, PD @ TA = 25°C
WQFN−20L 3x3 ------------------------------------------------------------------------------------------------------------ 1.471W
z Package Thermal Resistance (Note 2)
WQFN−20L 3x3, θJA ------------------------------------------------------------------------------------------------------ 68°C/W
WQFN−20L 3x3, θJC ------------------------------------------------------------------------------------------------------ 7.5°C/W
z Lead Temperature (Soldering, 10 sec.)------------------------------------------------------------------------------- 260°C
z Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
z Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Model)---------------------------------------------------------------------------------------------- 2kV
MM (Machine Model) ----------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
z Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- 2.7V to 24V
z Junction Temperature Range-------------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range-------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = 4.5V, TA = 25°C, unless otherwise specified)
Parameter
VIN Quiescent Current
Shutdown Current
Symbol
Test Conditions
= 0V, No Switching
= 2V, Switching
Min
--
Typ
2
Max
--
Unit
I
V
V
V
VCC
COMP
mA
--
3
--
I
VCC_LX
COMP
I
= 4.5V, EN = 0
Rising
--
--
--
--
20
--
μA
SHDN
IN
2.3
2.1
V
V
VIN Under Voltage Lockout
Threshold
IN
IN
V
V
UVLO
--
Falling
Control Input
Logic-High
2
--
--
--
--
--
--
0.8
--
V
V
= 2.7V to 24V
= 2.7V to 24V
= 2.7V to 24V
= 2.7V to 24V
EN Input Voltage
Threshold
IH
IL
IN
V
V
Logic-Low
Logic-High
Logic-Low
V
V
IN
1.5
--
V
V
PWM Input Voltage
Threshold
IH
IL
IN
IN
V
V
0.6
Boost Converter
--
0.9
--
2
1
--
1.1
--
R
R
R
V
= 25kΩ
RT
Switching Frequency
MHz
f
= 51kΩ
= 100kΩ
> 4.5V
OSC
RT
0.5
RT
LX On Resistance (N-MOSFET)
Minimum On Time
R
--
--
0.25
120
--
--
Ω
DS(ON)
IN
t
f
= 1MHz
ns
MON
OSC
Copyright 2012 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS8567A-00 April 2012
www.richtek.com
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