RT8072
5
DS8072-02 August 2014 www.richtek.com
©
Copyright 2014 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
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
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
Parameter Symbol Test Conditions Min Typ Max Unit
Input Power Supply
Under Voltage Lockout Threshold V
UVLO
V
IN
Rising -- 2.6 2.8 V
Quiescent Current I
Q
Active, V
FB
= 0.9V, Not switching -- 250 -- A
Shutdown Current I
SHDN
-- 2 5 A
Voltage Reference
Voltage Reference V
REF
0.792 0.8 0.808 V
Enable
Logic-High V
IH
1.5 -- 5.5
EN Input Voltage
Logic-Low V
IL
-- -- 0.4
V
Switching Frequency Setting
300 -- 2000
R
T
= 28.7k -- 1400 --
Switching Frequency f
OSC
RT pin is floating -- 300 --
kHz
Power Good Range WDFN-12L 3x3 Only -- ±7 -- %
Minimum On-Time -- 80 -- ns
Minimum Off-Time -- 60 -- ns
(V
IN
= 5V, C
IN
= 10μF, T
A
= 25°C, unless otherwise specified)
Electrical Characteristics
