RT9022
3
DS9022-04 March 2012 www.richtek.com
©
Copyright 2012 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Electrical Characteristics
(V
IN
= V
EN
= 15V, C
IN
= 1μF, C
OUT
= 2.2μF, T
A
= 25°C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Input Power
Quiescent Current
I
OUT
= 0mA -- 40 80 μA
Standby Current
EN = GND -- -- 1 μA
Reference Voltage
Feedback Voltage
V
FB
= V
OUT
, I
LOAD
= 1mA -- 1.25 -- V
Feedback Voltage Tolerance
−1 -- 1 %
Feedback Input Current
V
FB
= 1.3V -- 10 -- nA
Soft-Start
Soft-Start Current
-- 1.5 -- μA
Output
Output Current Limit I
LIM
V
IN
= 15V, V
OUT
= 14V,
R
OUT
= 50Ω
70 80 -- mA
Output Reverse Leakage Current
V
IN
= Unconnected,
Output set to 5V
-- 30 -- μA
Dropout Voltage
I
LOAD
= 30mA, V
OUT
= 14V
-- 0.2 0.3 V
f = 120Hz, V
IN
= V
OUT
+ 1V,
I
OUT
= 10mA
-- 65 -- dB
Power Supply Rejection Rate
f = 10kHz, V
IN
= V
OUT
+ 1V,
I
OUT
= 10mA
-- 55 -- dB
Discharge Current
EN = High to Low, V
OUT
= 14V -- 20 -- mA
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage, V
IN
------------------------------------------------------------------------------------------------- 21V
z Enable Voltage, V
EN
------------------------------------------------------------------------------------------------------- 18V
z Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-6/TSOT-23-6 ------------------------------------------------------------------------------------------------------- 300mW
SC-70-6 ----------------------------------------------------------------------------------------------------------------------- 225mW
z Package Thermal Resistance (Note 2)
SOT-23-6/TSOT-23-6, θ
JA
------------------------------------------------------------------------------------------------- 250°C/W
SC-70-6, θ
JA
----------------------------------------------------------------------------------------------------------------- 333°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 Mode) ----------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
z Supply Input Voltage, V
IN
------------------------------------------------------------------------------------------------- 5V to 20V
z Junction Temperature Range --------------------------------------------------------------------------------------------- −40°C to 100°C
z Ambient Temperature Range --------------------------------------------------------------------------------------------- −40°C to 85°C
