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RT9228CS Datasheet(PDF) 3 Page - Richtek Technology Corporation

No. de pieza RT9228CS
Descripción Electrónicos  ADVANCED PWM AND DUAL LINEAR POWER CONTROLLER
PDF  10 Pages
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Fabricante Electrónico  RICHTEK [Richtek Technology Corporation]
Página de inicio  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9228CS Datasheet(HTML) 3 Page - Richtek Technology Corporation

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RT9228
DS9228-03 July 2001
www.richtek.com
3
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Reference and DAC
DAC (VID0-VID4) Input Low Voltage
--
--
0.8
V
DAC (VID0-VID4) Input High Voltage
2.0
--
--
V
DACOUT Voltage Accuracy
DACOUT = 2.05 ~ 3.50V
-1
--
1
%
DACOUT Voltage Accuracy
DACOUT = 1.30 ~ 2.00V
-1%
--
20mV
-
Reference Voltage (Pin FB2 and FB3)
VREF
1.240
1.265
1.290
V
Linear Regulator
Regulation
10mA
< IVOUT2 < 150mA
-2.5
--
2.5
%
Under-voltage Level
FB2 Rising
--
75
87
%
Under-voltage Hysteresis
--
100
--
mV
Over-current Protection
IOVP
180
230
--
mA
Over-current Protection During Start-up
--
700
--
mA
Linear Controller
Regulation
VSEN3 = GATE3
0
< IGATE3 < 20mA
-2.5
--
2.5
%
Under-voltage Level
FB3 Rising
--
75
87
%
Under-voltage Hysteresis
--
100
--
mV
Output Drive Current
VIN2 – VOUT3
> 1.5V
20
40
--
mA
PWM Controller Error Amplifier
DC Gain
--
65
--
dB
PWM Controller Gate Driver
UGATE Source
RUGATE1
VCC = 12V
VCC - VUGATE1 = 1V
--
3
7
Ω
UGATE Sink
RUGATE1 VUGATE1 = 1V
--
3
7
Ω
LGATE Source
ILGATE1
VCC = 12V
VLGATE1 = 2V
--
1
--
A
LGATE Sink
RLGATE1 VLGATE1 = 1V
--
2
6
Ω
Protection
VOUT1 Over-voltage Trip
VSEN1 Rising
112
115
120
%
FAULT Souring Current
IOVP
VFAULT = 8V
10
14
--
mA
OCSET1 Current Source
IOCSET
VOCSET1 = 4.5V
170
200
230
µA
Soft-start Current
ISS
VSS = 1V
--
11
--
µA
Power Good
VOUT1 Upper Threshold
VSEN1 Rising
108
--
112
%
VOUT1 Under Voltage
VSEN1 Rising
89
--
95
%
VOUT1 Hysteresis (VSEN1/DACOUT)
Upper/Lower Threshold
--
2
--
%
PGOOD Voltage Low
IPGOOD = -4mA
--
--
0.5
V



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