RT8105 查看數據表（PDF） - Richtek Technology
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RT8105 Datasheet PDF : 12 Pages
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RT8105
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VCC -------------------------------------------------------------------------------------- 16V
z BOOT to PHASE ------------------------------------------------------------------------------------------ 15V
z UGATE to PHASE
DC ------------------------------------------------------------------------------------------------------------- −0.3V to (VBOOT-PHASE + 0.3V)
<20ns -------------------------------------------------------------------------------------------------------- −5V to (VBOOT-PHASE + 5V)
z PHASE to GND
DC ------------------------------------------------------------------------------------------------------------- −0.5V to 15V
<20ns -------------------------------------------------------------------------------------------------------- −5V to 25V
z LGATE to GND
DC ------------------------------------------------------------------------------------------------------------- −0.3V to (VCC + 0.3V)
<20ns -------------------------------------------------------------------------------------------------------- −5V to (VCC + 5V)
z Input, Output or I/O Voltage ----------------------------------------------------------------------------- GND-0.3V to 7V
z Power Dissipation, PD @ TA = 25°C (Note 2)
SOP-8 -------------------------------------------------------------------------------------------------------- 0.625W
z Package Thermal Resistance
SOP-8, θJA -------------------------------------------------------------------------------------------------- 160°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 Mode) ------------------------------------------------------------------------------ 2kV
MM (Machine Mode) -------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
z Supply Voltage, VCC -------------------------------------------------------------------------------------- 5V ± 5%,12V ± 10%
z Junction Temperature Range ---------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range ---------------------------------------------------------------------------- −20°C to 85°C
Electrical Characteristics
(VCC = 5V/12V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
IC Supply Voltage
Nominal Supply Current
Power-On Reset
VCC
ICC
UGATE and LGATE Open
4.75 -- 13.2 V
--
6
15 mA
POR Threshold
Hysteresis
Switcher Reference
Reference Voltage
Oscillator
Free Running Frequency
Ramp Amplitude
VCCRTH
VCCHYS
VCC Rising
VREF
VCC = 12V
fOSC
ΔVOSC
VCC = 12V
VCC = 12V
3.8 4.1 4.35 V
0.35 0.5 --
V
0.784 0.8 0.816 V
250 300 350 kHz
-- 1.5 -- VP-P
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4
To be continued
DS8105-03 April 2011
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