RT9228 Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Lista de partido
RT9228 Datasheet PDF : 8 Pages
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RT9228
Absolute Maximum Ratings
z Supply Voltage ----------------------------------------------------------------------------------------------------- +15V
z PGOOD, FAULT 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 Typ Max Units
VCC Supply Current
Nominal Supply Current
ICC
UGATE1, GATE3, LGATE1,
and VOUT2 Open
--
10
--
mA
Power-On Reset
VCC Rising Threshold
VCC Falling Threshold
Rising VIN2 Under-voltage Threshold
VOCSET1 = 4.5V
VOCSET1 = 4.5V
7.5
--
9.5
V
7
--
9
V
--
2.8
--
V
VIN2 Under-voltage Hysteresis
--
0.5
--
V
Rising VOCSET1 Threshold
Oscillator
-- 1.25 --
V
Free Running Frequency
Ramp Amplitude
ΔVOSC
180 200 225 kHz
--
1.9
--
VP-P
To be continued
DS9228-06 March 2007
www.richtek.com
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