RT7266
Absolute Maximum Ratings
(Note 1)
Supply Voltage, VIN -----------------------------------------------------------------------------------------------
−0.3V
to 20V
Switch Voltage, SW -----------------------------------------------------------------------------------------------
−0.8V
to (V
IN
+ 0.3V)
< 10ns -----------------------------------------------------------------------------------------------------------------
−5V
to 25V
BOOT to SW --------------------------------------------------------------------------------------------------------
−0.3V
to 6V
All Other Pins -------------------------------------------------------------------------------------------------------
−0.3V
to 6V
Power Dissipation, P
D
@ T
A
= 25°C
SOP-8 (Exposed Pad) -------------------------------------------------------------------------------------------- 1.333W
Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad),
θ
JA
--------------------------------------------------------------------------------------- 75°C/W
SOP-8 (Exposed Pad),
θ
JC
-------------------------------------------------------------------------------------- 15°C/W
Junction Temperature Range ------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------ 260°C
Storage Temperature Range -------------------------------------------------------------------------------------
−65°C
to 150°C
Recommended Operating Conditions
(Note 3)
Supply Voltage, VIN ----------------------------------------------------------------------------------------------- 4.5V to 18V
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
Shutdown Current
Quiescent Current
Logic Threshold
EN Voltage
Logic-High
Logic-Low
Symbol
I
SHDN
I
Q
Test Conditions
V
EN
= 0V
V
EN
= 3V, V
FB
= 1V
Min
--
--
2
--
Typ
1
0.7
--
--
Max
10
--
5.5
0.4
Unit
μA
mA
V
V
REF
Voltage and Discharge Resistance
Feedback Reference Voltage
Feedback Input Current
V
PVCC
Output
V
PVCC
Output Voltage
Line Regulation
Load Regulation
Output Current
R
DS(ON)
Switch On
Resistance
Current Limit
Current limit
I
LIM
3.5
4.1
5.7
A
High Side
Low Side
R
DS(ON)_H
R
DS(ON)_L
--
--
90
60
--
--
mΩ
I
PVCC
V
PVCC
6V
≤
V
IN
≤
18V, 0 < I
PVCC
<
5mA
6V
≤
V
IN
≤
18V, I
PVCC
= 5mA
0
<
I
PVCC
<
5mA
V
IN
= 6V, V
PVCC
= 4V
4.7
--
--
--
5.1
--
--
110
5.5
20
60
--
V
mV
mV
mA
V
REF
I
FB
4.5V
≤
V
IN
≤
18V
V
FB
= 0.8V
0.753
−0.1
0.765 0.777
0
0.1
V
μA
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS7266-02
September 2012
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
