RT9227A Просмотр технического описания (PDF) - Richtek Technology
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RT9227A Datasheet PDF : 8 Pages
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RT9227A
Preliminary
Parameter
Symbol
Test Conditions
Linear Regulator
Regulation Voltage
Under-Voltage Level
VREG
10mA < IVOUT2 < 150mA
FB2 Rising
Under-Voltage Hysteresis
Over-Current Protection
Over-Current Protection During Start-Up
Linear Controller
Regulation Voltage
Under-Voltage Level
VREG
VSEN3 = GATE3
0 < IGATE3 < 20mA
FB3 Rising
Under-Voltage Hysteresis
PWM Controller Error Amplifier
DC Gain
PWM Controller Gate Driver
UGATE Source
UGATE Sink
LGATE Source
LGATE Sink
Protection
VCC = 12V
RUGATE1 VCC - VUGATE1 = 1V
RUGATE1 VUGATE1 = 1V
ILGATE1 VCC = 12V, VLGATE1 = 2V
RLGATE1 VLGATE1 = 1V
VOUT1 Over-Voltage Trip
VSEN1 Rising
FAULT Souring Current
OCSET1 Current Source
Soft-Start Current
Power Good
IOCSET
ISS
VFAULT = 8V
VOCSET1 = 4.5V
VSS = 1V
VOUT1 Upper Threshold
VSEN1 Rising
VOUT1 Under Voltage
VOUT1 Hysteresis (VSEN1 / DACOUT)
VSEN1 Rising
Upper/Lower Threshold
PGOOD Voltage Low
VPGOOD IPGOOD = -4mA
Min Typ Max Units
2.437 2.500 2.563 V
-- 1.875 2.175 V
--
100
--
mV
180 230
--
mA
--
700
--
mA
1.462 1.500 1.538 V
-- 1.125 1.305 V
--
100
--
mV
--
65
--
dB
--
3
7
Ω
--
3
7
Ω
--
1
--
A
--
2
6
Ω
112 115 120 %
10
14
--
mA
170 200 230 μA
--
11
--
μA
108
--
112
%
89
--
95
%
--
2
--
%
--
--
0.5
V
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DS9227A-05 March 2007
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