RT8286 데이터 시트보기 (PDF) - Richtek Technology
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RT8286 Datasheet PDF : 14 Pages
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RT8286
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VIN ------------------------------------------------------------------------------------------- −0.3V to 26V
z Switch Voltage, SW ------------------------------------------------------------------------------------------- −0.3V to (VIN + 0.3V)
z Boot Voltage, BOOT ------------------------------------------------------------------------------------------- (SW − 0.3V) to (SW + 6V)
z Other Pins -------------------------------------------------------------------------------------------------------- −0.3V to 6V
z Power Dissipation, PD @ TA = 25°C
SOP-8 (Exposed Pad) ---------------------------------------------------------------------------------------- 1.333W
z Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad), θJA ----------------------------------------------------------------------------------- 75°C/W
SOP-8 (Exposed Pad), θJC ---------------------------------------------------------------------------------------------------------------------- 15°C/W
z Junction Temperature ------------------------------------------------------------------------------------------ 150°C
z Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------- 260°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 Range, VIN --------------------------------------------------------------------------- 4.5V to 21V
z Junction Temperature Range --------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range --------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = 5V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Shutdown Current
Quiescent Current
ISHDN
IQ
Upper Switch On Resistance
Lower Switch On Resistance
Switch Leakage
Current Limit
Oscillator Frequency
Short Circuit Frequency
R DS(ON)1
R DS(ON)2
IL EA K
IL IM
f SW
Maximum Duty Cycle
D MA X
Minimum On Time
tON
Feedback Voltage
VFB
Feedback Current
IFB
EN Input Threshold Logic-High VIH
Voltage
Logic-Low VIL
Enable Current
Under Voltage Lockout Threshold VUVLO
Under Voltage Lockout Threshold
Hysteresis
ΔVU VLO
Test Conditions
VEN = 0
VEN = 2V, VFB = 1V
VEN = 0V, VSW = 0V or 12V
VBOOT − VSW = 4.8V
VFB = 0.75V
VFB = 0V
VFB = 0.8V
4.5V ≤ VIN ≤ 21V
VEN = 2V
VEN = 0V
VIN Rising
Min Typ Max Unit
--
0
1
μA
-- 0.7 -- mA
-- 150 -- mΩ
--
60
-- mΩ
--
0
10 μA
3.9
5
--
A
425 500 575 kHz
-- 150 -- kHz
--
90
--
%
-- 100 --
ns
0.796 0.808 0.82 V
--
10 50 nA
2
-- 5.5
V
--
-- 0.4
--
1
--
μA
--
0
--
3.8
4
4.2
V
-- 400 -- mV
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
4
is a registered trademark of Richtek Technology Corporation.
DS8286-02 June 2012
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