RT8803A 데이터 시트보기 (PDF) - Richtek Technology
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RT8803A Datasheet PDF : 27 Pages
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RT8803A
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VDD ------------------------------------------------------------------------------------------ 7V
z Input, Output or I/O Voltage -------------------------------------------------------------------------------- GND-0.3V to VDD+0.3V
z Power Dissipation, PD @ TA = 25°C
VQFN−32L 5x5 ------------------------------------------------------------------------------------------------ 2.778W
z Package Thermal Resistance (Note 2)
VQFN-32L 5x5, θJA ------------------------------------------------------------------------------------------- 36°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, VDD ------------------------------------------------------------------------------------------ 5V ± 10%
z Junction Temperature Range ------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range ------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VDD = 5V, TA = 25° C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
VDD Supply Current
Nominal Supply Current
Power-On Reset
IDD
PWM 1,2,3 Open
--
12 16 mA
POR Threshold
Hysteresis
VDVD Threshold
VTT Threshold
Oscillator
Trip (Low to High)
Hysteresis
Trip (Low to High)
Hysteresis
VD DRTH
VD DHYS
VDVDTH
VDVDHYS
VTTTH
VTTHYS
VDD Rising
Enable
Enable
4.0 4.2 4.5 V
0.2 0.5
--
V
0.9 1.0 1.1 V
--
60
-- mV
0.75 0.85 0.95
V
--
0.1
--
Free Running Frequency
Frequency Adjustable Range
Ramp Amplitude
Ramp Valley
Maximum On-Time of Each Channel
fOSC
RRT = 20kΩ
180 200 220 kHz
fOSC_ADJ
50
-- 400 kHz
ΔVOSC
RRT = 20kΩ
--
1.9
--
V
VRV
0.7 1.0
--
V
Three Phase Operation 62
67
72
%
RT Pin Voltage
VRT
RRT = 20kΩ
0.9 1.0 1.1 V
To be continued
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16
DS8803A-06 April 2011
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