RT9244 데이터 시트보기 (PDF) - Richtek Technology
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RT9244 Datasheet PDF : 15 Pages
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RT9244
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VCC ------------------------------------------------------------------------------------------- 7V
z Input, Output or I/O Voltage ---------------------------------------------------------------------------------- GND-0.3V to VCC+0.3V
z Package Thermal Resistance
SOP-32, θJA ----------------------------------------------------------------------------------------------------- 50°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 2)
HBM (Human Body Mode) ----------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 3)
z Supply Voltage, VCC ------------------------------------------------------------------------------------------- 5V ± 10%
z Ambient Temperature Range --------------------------------------------------------------------------------- 0°C to 70°C
z Junction Temperature Range --------------------------------------------------------------------------------- 0°C to 125°C
Electrical Characteristics
(VCC = 5V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
VCC Supply Current
Nominal Supply Current
ICC
Power-On Reset
POR Threshold
Hysteresis
VDVD Threshold
Oscillator
Trip (Low to High)
Hysteresis
VCCRTH
VCCHYS
VDVDTP
VDVDHYS
Free Running Frequency
Frequency Adjustable Range
Ramp Amplitude
Ramp Valley
Maximum On-Time of Each Channel
fOSC
fOSC_ADJ
ΔVOSC
VRV
RT Pin Voltage
VRT
Reference and DAC
DACOUT Voltage Accuracy
ΔVDAC
DAC (VID0-VID4) Input Low
DAC (VID0-VID4) Input High
VILDAC
VIHDAC
Test Conditions
PWM 1,2,3,4 Open
VCC Rising
Enable
RRT = 12kΩ
RRT = 12kΩ
R RT = 12kΩ
VDAC ≥ 1V
VDAC < 1V
Min Typ Max Units
--
12
-- mA
4.0 4.2 4.5 V
0.2 0.5 --
V
-- 2.0 --
V
--
50
-- mV
170 200 230 kHz
50
-- 400 kHz
-- 1.9 --
V
-- 1.0 --
V
62 66 75 %
0.55 0.60 0.65 V
−1
--
+1
%
−10 -- +10 mV
--
-- 0.8 V
2.0 --
--
V
To be continued
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6
DS9244-06 March 2007
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