FDS6670AS データシートの表示（PDF） - Richtek Technology
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FDS6670AS Datasheet PDF : 18 Pages
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RT8298
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage, VIN ------------------------------------------------------------------------------------------ –0.3V to 26V
z Switching Voltage, SW -------------------------------------------------------------------------------------------- –0.3V to (VIN + 0.3V)
z BOOT to SW --------------------------------------------------------------------------------------------------------- –0.3V to 6V
z All Other Voltage ---------------------------------------------------------------------------------------------------- −0.3V to 6V
z Power Dissipation, PD @ TA = 25°C
WDFN-14L 4x3 ------------------------------------------------------------------------------------------------------- 1.667W
SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------- 1.333W
z Package Thermal Resistance (Note 2)
WDFN-14L 4x3, θJA ------------------------------------------------------------------------------------------------- 60°C/W
WDFN-14L 4x3, θJC ------------------------------------------------------------------------------------------------- 7.5°C/W
SOP-8 (Exposed Pad), θJA ---------------------------------------------------------------------------------------- 75°C/W
SOP-8 (Exposed Pad), θJC --------------------------------------------------------------------------------------- 15°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, VIN ------------------------------------------------------------------------------------------ 4.5V to 24V
z Junction Temperature Range -------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range -------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = 12V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Shutdown Supply Current
Supply Current
Feedback Reference Voltage
Feedback Current
High-Side Switch On Resistance
High-Side Switch Current Limit
VREF
IFB
RDS(ON)
VEN = 0V
VEN = 3V, VFB = 1V
4.5V ≤ VIN ≤ 24V
VFB = 0.8V
BOOT − SW = 4.8V
Oscillation Frequency
Short Circuit Oscillation Frequency
Maximum Duty Cycle
Minimum On-Time
Input Under Voltage Lockout Threshold
fOSC1
fOSC2
DMAX
tON
VUVLO
VFB = 0V
VFB = 0.6V
VFB = 1V
Input Under Voltage Lockout Threshold
Hysteresis
ΔVUVLO
EN Threshold
Logic-High
VIH
Voltage
Logic-Low
VIL
Min Typ Max Unit
--
1
-- μA
-- 0.9 -- mA
0.796 0.808 0.82 V
-- 10 -- nA
-- 45 -- mΩ
--
10
--
A
-- 600 -- kHz
-- 190 -- kHz
--
90 --
%
-- 100 -- ns
4 4.2 4.4 V
-- 400 -- mV
2
-- 5.5
V
--
-- 0.4
Copyright ©2011 Richtek Technology Corporation. All rights reserved.
DS8298-01 November 2011
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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