RT8288 Просмотр технического описания (PDF) - Richtek Technology
Номер в каталоге
Компоненты Описание
производитель
RT8288 Datasheet PDF : 14 Pages
| |||
RT8288
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
Test Conditions
Shutdown Current
ISHDN
VEN = 0
Quiescent Current
Upper Switch On Resistance
Lower Switch On Resistance
Switch Leakage
Current Limit
Oscillator Frequency
Short Circuit Frequency
Maximum Duty Cycle
Minimum On Time
IQ
RDS(ON)1
RDS(ON)2
IL EA K
IL IMIT
fSW
DMAX
tON
VEN = 2V, VFB = 1V
VEN = 0V, VSW = 0V or 12V
VBOOT − VSW = 4.8V
VFB = 0.75V
VFB = 0V
VFB = 0.8V
Feedback Voltage
VFB
4.5V ≤ VIN ≤ 21V
Feedback Current
IFB
EN Input Threshold Logic-High VIH
Voltage
Logic-Low VIL
Enable Current
Under Voltage Lockout
Threshold
VUVLO
VEN = 2V
VEN = 0V
VIN Rising
Min Typ
--
0
-- 0.7
-- 120
--
40
--
0
5.4 6.5
425 500
-- 150
--
90
-- 100
0.796 0.808
--
10
2
--
--
--
--
1
--
0
Max
1
--
--
--
10
--
575
--
--
--
0.82
50
5.5
0.4
--
--
Unit
μA
mA
mΩ
mΩ
μA
A
kHz
kHz
%
ns
V
nA
V
μA
3.8
4
4.2 V
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
4
is a registered trademark of Richtek Technology Corporation.
DS8288-03 June 2012
Share Link: 