RT8073
Absolute Maximum Ratings
(Note 1)
Supply Input Voltage, VIN -----------------------------------------------------------------------------------------
−0.3V
to 6.5V
BOOT to LX -----------------------------------------------------------------------------------------------------------
−0.3V
to 6V
Other Pins -------------------------------------------------------------------------------------------------------------
−0.3V
to (V
IN
+ 0.3V)
Power Dissipation, P
D
@ T
A
= 25°C
SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------- 2.041W
WDFN-12L 3x3 ------------------------------------------------------------------------------------------------------- 1.667W
Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad),
θ
JA
---------------------------------------------------------------------------------------- 49°C/W
SOP-8 (Exposed Pad),
θ
JC
--------------------------------------------------------------------------------------- 15°C/W
WDFN-12L 3x3,
θ
JA
------------------------------------------------------------------------------------------------- 60°C/W
WDFN-12L 3x3,
θ
JC
------------------------------------------------------------------------------------------------- 7.5°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 4)
Supply Input Voltage, VIN ----------------------------------------------------------------------------------------- 2.9V to 5.5V
Junction Temperature Range --------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range --------------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
(V
IN
= 5V, C
IN
= 10μF, T
A
= 25°C, unless otherwise specified)
Parameter
Input Power Supply
Under Voltage Lockout Threshold
Quiescent Current
Shutdown Current
Voltage Reference
Voltage Reference
Enable
EN Input Voltage
Logic-High
Logic-Low
Symbol
V
UVLO
I
Q
I
SHDN
V
REF
V
IH
V
IL
Test Conditions
V
IN
Rising
Active, V
FB
= 0.9V, Not switching
Min
--
--
--
0.792
1.5
--
300
Typ
2.6
250
2
0.8
--
--
--
1400
300
80
60
Max
2.8
--
5
0.808
5.5
0.4
2000
--
--
--
--
Unit
V
μA
μA
V
V
Switching Frequency Setting
Switching Frequency
Minimum On-Time
Minimum Off-Time
f
OSC
R
T
= 28.7kΩ
RT pin is floating
--
--
--
--
kHz
ns
ns
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS8073-01
November 2012
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
