RT8805 데이터 시트보기 (PDF) - Richtek Technology
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RT8805 Datasheet PDF : 15 Pages
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RT8805
Preliminary
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VCC -------------------------------------------------------------------------------------------------- −0.3V to 16V
z PHASE to GND
DC ------------------------------------------------------------------------------------------------------------------------- −5V to 15V
< 200ns ------------------------------------------------------------------------------------------------------------------ −10V to 30V
z BOOT to PHASE ------------------------------------------------------------------------------------------------------ 15V
z BOOT to GND
DC ------------------------------------------------------------------------------------------------------------------------- −0.3V to VCC+15V
< 200ns ------------------------------------------------------------------------------------------------------------------ −0.3V to 42V
z Input, Output or I/O Voltage ----------------------------------------------------------------------------------------- GND-0.3V to 7V
z Power Dissipation, PD @ TA = 25°C
VQFN−16L 3x3 --------------------------------------------------------------------------------------------------------- 1.47W
z Package Thermal Resistance (Note 4)
VQFN−16L 3x3, θJA --------------------------------------------------------------------------------------------------- 68°C/W
z Junction Temperature ------------------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.) --------------------------------------------------------------------------- 260°C
z ESD Susceptibility (Note 2)
HBM (Human Body Mode) ------------------------------------------------------------------------------------------ 1.5kV
MM (Machine Mode) -------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 3)
z Supply Voltage --------------------------------------------------------------------------------------------------------- 9V to 14V
z Junction Temperature Range ---------------------------------------------------------------------------------------- −20°C to 70°C
Electrical Characteristics
(VIN = 12V, TA = 25°C, unless otherwise specified)
Parameter
Supply Input
Symbol
Test Conditions
Power Supply Voltage
VCC
Power On Reset
VCC
Power On Reset Hysteresis
Power Supply Current
Soft Start
Soft Start Current
Oscillator
Free Running Frequency
Frequency Variation
Frequency Range
Maximum Duty Cycle
IVCC
ISS
fOSC
VSS = 0V
RT = 33kΩ
Min Typ Max Units
--
12 15
V
5.4 5.9 6.5
V
--
0.3
--
V
--
10
-- mA
8
10 15 μA
255 300 345 kHz
-15
--
15 %
50 300 1000 kHz
70
75
80
%
To be continued
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4
DS8805-01 November 2005
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