RT8073 データシートの表示（PDF） - Richtek Technology
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RT8073 Datasheet PDF : 16 Pages
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RT8073
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage, VIN ----------------------------------------------------------------------------------------- −0.3V to 6.5V
z BOOT to LX ----------------------------------------------------------------------------------------------------------- −0.3V to 6V
z Other Pins ------------------------------------------------------------------------------------------------------------- −0.3V to (VIN + 0.3V)
z Power Dissipation, PD @ TA = 25°C
SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------- 2.041W
WDFN-12L 3x3 ------------------------------------------------------------------------------------------------------- 1.667W
z Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad), θJA ---------------------------------------------------------------------------------------- 49°C/W
SOP-8 (Exposed Pad), θJC --------------------------------------------------------------------------------------- 15°C/W
WDFN-12L 3x3, θJA ------------------------------------------------------------------------------------------------- 60°C/W
WDFN-12L 3x3, θJC ------------------------------------------------------------------------------------------------- 7.5°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 Model) ---------------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions (Note 4)
z Supply Input Voltage, VIN ----------------------------------------------------------------------------------------- 2.9V to 5.5V
z Junction Temperature Range -------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range -------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = 5V, CIN = 10μF, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Input Power Supply
Under Voltage Lockout Threshold
Quiescent Current
Shutdown Current
Voltage Reference
VUVLO
IQ
ISHDN
VIN Rising
Active, VFB = 0.9V, Not switching
Voltage Reference
Enable
VREF
Logic-High
EN Input Voltage
VIH
Logic-Low
VIL
Switching Frequency Setting
Switching Frequency
Minimum On-Time
Minimum Off-Time
fOSC
RT = 28.7kΩ
RT pin is floating
Min Typ Max Unit
-- 2.6 2.8 V
-- 250 -- μA
--
2
5 μA
0.792 0.8 0.808 V
1.5 -- 5.5
V
--
-- 0.4
300 -- 2000
-- 1400 -- kHz
-- 300 --
-- 80 -- ns
-- 60 -- ns
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS8073-01 November 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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