RT9228 Datasheet, PDF (2/10 Pages) Richtek Technology Corporation – ADVANCED PWM AND DUAL LINEAR POWER CONTROLLER

RT9228
Absolute Maximum Ratings
z Supply Voltage
z PGOOD, FAULT and GATE Voltage
z Input, Output or I/O Voltage
z Ambient Temperature Range
z Junction Temperature Range
z Storage Temperature Range
z Lead Temperature (Soldering, 10 sec.)
z Package Thermal Resistance
SOP-24, θ_JA
+15V
GND−0.3V to V_CC+0.3V
GND−0.3V to 7V
0°C to +70°C
0°C to +125°C
−65°C to +150°C
300°C
75°C/W
Recommended Operating Conditions
z Supply Voltage
z Ambient Temperature Range
z Junction Temperature Range
+12V±10%
0°C to 70°C
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
(V_CC = 12V, PGND = 0V, T_A = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
VCC Supply Current
Nominal Supply Current
I_CC
UGATE1, GATE3, LGATE1,
and VOUT2 Open
--
Power-On Reset
VCC Rising Threshold
V_OCSET1 = 4.5V
7.5
VCC Falling Threshold
V_OCSET1 = 4.5V
7
Rising VIN2 Under-voltage Threshold
--
VIN2 Under-voltage Hysteresis
--
Rising V_OCSET1 Threshold
--
Oscillator
Free Running Frequency
180
Ramp Amplitude
∆V_OSC
--
Typ Max Units
10
--
mA
--
9.5
V
--
9
V
2.8
--
V
0.5
--
V
1.25 --
V
200 225 kHz
1.9
--
V_P-P
To be continued
www.richtek.com
2
DS9228-03 July 2001