RT9045
5
DS9045-05 April 2014
www.richtek.com
©
Copyright 2014 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Electrical Characteristics
(V
IN
= 1.8V / 1.5V, V
CNTL
= 5V, V
REFEN
= 0.9V / 0.75V, C
OUT
= 10μF (Ceramic), T
A
= 25°C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Input
VCNTL Operation Current I
CNTL
I
OUT
= 0A -- 0.7 2.5 mA
VCNTL Power on Reset V
POR
V
CNTL
Rising -- 3.6 -- V
Standby Current (Note 5) I
STBY
V
REFEN
0.2V (Shutdown), R
LOAD
= 180 -- 20 90 A
Output
Output Offset Voltage
(Note 6)
V
OS
I
OUT
= 0A 13 -- 13 mV
V
IN
= 1.8V, V
REFEN
= 0.9V, I
OUT
= 1.8A
V
IN
= 1.5V, V
REFEN
= 0.75V, I
OUT
= 1.5A
V
IN
= 1.35V, V
REFEN
= 0.675V, I
OUT
= 1.2A
Load Regulation (Note 7) V
LOAD
V
IN
= 1.2V, V
REFEN
= 0.6V, I
OUT
= 1.2A
13 -- 13 mV
Protection
V
IN
= 1.8V, V
REFEN
= 0.9V
Source I
LIMITsr
V
IN
= 1.5V, V
REFEN
= 0.75V
1.8 -- 3.5 A
V
IN
= 1.8V, V
REFEN
= 0.9V
Current Limit
Sink I
LIMITsk
V
IN
= 1.5V, V
REFEN
= 0.75V
1.8 -- 3.5 A
Absolute Maximum Ratings (Note 1)
Input Voltage, V
IN
------------------------------------------------------------------------------------------------------------ −0.3V to 6V
Control Voltage, V
CNTL
----------------------------------------------------------------------------------------------------- −0.3V to 6V
Reference Input Voltage, V
REFEN
----------------------------------------------------------------------------------------- −0.3V to 6V
Output Voltage, V
OUT
------------------------------------------------------------------------------------------------------- −0.3V to 6V
Power Dissipation, P
D
@ T
A
= 25°C
SOP-8 (Exposed Pad) ----------------------------------------------------------------------------------------------------- 2.51W
Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad), θ
JA
------------------------------------------------------------------------------------------------ 39.8°C/W
SOP-8 (Exposed Pad), θ
JC
----------------------------------------------------------------------------------------------- 10.1°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
MM (Machine Model) ------------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
Input Voltage, V
IN
------------------------------------------------------------------------------------------------------------ 1V to 5.5V
Control Voltage, V
CNTL
----------------------------------------------------------------------------------------------------- 5V ± 5%
Junction Temperature Range ----------------------------------------------------------------------------------------------
−40°C to 125°C
Ambient Temperature Range ----------------------------------------------------------------------------------------------
−40°C to 85°C