RT8805C 데이터 시트보기 (PDF) - Richtek Technology
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RT8805C Datasheet PDF : 18 Pages
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RT8805C
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
VQFN−24L 4x4 --------------------------------------------------------------------------------------------------------- 1.923W
z Package Thermal Resistance (Note 4)
VQFN−16L 3x3, θJA --------------------------------------------------------------------------------------------------- 68°C/W
VQFN−24L 4x4, θJA --------------------------------------------------------------------------------------------------- 52°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 ---------------------------------------------------------------------------------------- −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
Supply Input
Power Supply Voltage
VCC
Power On Reset
VCC
Power On Reset Hysteresis
Power Supply Current
PI Threshold
ON
Hysteresis
IVCC
VEN
VEN
VSS = 0V
Soft Start
Soft Start Current
ISS
Oscillator
Free Running Frequency
Frequency Variation
fOSC
RT = 33kΩ
Frequency Range
Maximum Duty Cycle
www.richtek.com
6
Min Typ Max Units
--
12
15
V
5.4 5.9 6.5
V
--
0.3
--
V
--
10
-- mA
--
0.3
--
V
--
50
--
mV
8
10 15 μA
255 300 345 kHz
-15
--
15 %
50 300 1000 kHz
70
75
80
%
To be continued
DS8805C-03 August 2007
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