RT8288A Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT8288A Datasheet PDF : 14 Pages
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RT8288A
Absolute Maximum Ratings (Note 1)
z Supply Input 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, 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 = 12V, TA = 25°C unless otherwise specified)
Parameter
Symbol
Shutdown Current
ISHDN
Quiescent Current
Upper Switch On Resistance
Lower Switch On Resistance
Switch Leakage
Current Limit
Oscillator Frequency
Short Circuit Frequency
IQ
RDS(ON)1
RDS(ON)2
IL EA K
IL IMIT
fSW
Maximum Duty Cycle
Minimum On Time
DMAX
tON
Feedback Voltage
VFB
Feedback Current
IFB
EN Input Threshold Logic-High VIH
Voltage
Logic-Low VIL
Enable Current
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
Min Typ Max
--
0
1
-- 0.7 --
-- 120 --
-- 40 --
--
0 10
5.9 7
--
425 500 575
-- 150 --
-- 90 --
-- 100 --
0.796 0.808 0.82
-- 10 50
2
-- 5.5
--
-- 0.4
--
1
--
--
0
--
Unit
μA
mA
mΩ
mΩ
μA
A
kHz
kHz
%
ns
V
nA
V
μA
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
4
is a registered trademark of Richtek Technology Corporation.
DS8288A-03 June 2012
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