RT9227A Ver la hoja de datos (PDF) - Richtek Technology
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Lista de partido
RT9227A Datasheet PDF : 8 Pages
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Preliminary
RT9227A
Absolute Maximum Ratings
z Supply Voltage ---------------------------------------------------------------------------------------------------- +15V
z PGOOD and GATE Voltage ------------------------------------------------------------------------------------ GND-0.3V to VCC+0.3V
z Input, Output or I/O Voltage ------------------------------------------------------------------------------------ GND- 0.3V to 7V
z Ambient Temperature Range ----------------------------------------------------------------------------------- 0°C to +70°C
z Junction Temperature Range ----------------------------------------------------------------------------------- 0°C to +125°C
z Storage Temperature Range ----------------------------------------------------------------------------------- −65°C to +150°C
z Lead Temperature (Soldering, 10 sec.) ---------------------------------------------------------------------- 260°C
z Package Thermal Resistance
SOP-24,θJA -------------------------------------------------------------------------------------------------------- 75°C/W
Recommended Operating Conditions
z Supply Voltage ---------------------------------------------------------------------------------------------------- +12V±10%
z Ambient Temperature Range ----------------------------------------------------------------------------------- 0°C to 70°C
z Junction Temperature Range ----------------------------------------------------------------------------------- 0°C to 125°C
CAUTION:
Stresses beyond the ratings specified in "Absolute Maximum Ratings" may cause permanent damage to the device.
This is a stress only rating and operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied.
Electrical Characteristics
(VCC = 12V, PGND = 0V, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
VCC Supply Current
Nominal Supply Current
Power-On Reset
ICC
UGATE1, GATE3, LGATE1,
and VOUT2 Open
--
VCC Rising Threshold
VOCSET1 = 4.5V
7.5
VCC Falling Threshold
VOCSET1 = 4.5V
7
Rising VIN2 Under-Voltage Threshold
--
VIN2 Under-Voltage Hysteresis
--
Rising VOCSET1 Threshold
--
Oscillator
Free Running Frequency
180
Ramp Amplitude
ΔVOSC
--
Reference and DAC
DAC (VID0 – VID4) Input Low Voltage
--
DAC (VID0 – VID4) Input High Voltage
2.0
DACOUT Voltage Accuracy
DACOUT = 2.05 to 3.50V
-1
DACOUT Voltage Accuracy
DACOUT = 1.30 to 2.00V
-1%
Typ Max Units
10
--
mA
--
9.5
V
--
9
V
--
2.8
V
0.5
--
V
1.25 --
V
200 225 kHz
1.9
--
VP-P
--
0.8
V
--
--
V
--
1
%
-- 20mV --
To be continued
DS9227A-05 March 2007
www.richtek.com
3
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