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參數(shù)資料
| 型號(hào)： | RT9228CS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類(lèi)： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | ADVANCED PWM AND DUAL LINEAR POWER CONTROLLER |
| 中文描述： | 先進(jìn)的PWM和雙重線性電源控制器 |
| 文件頁(yè)數(shù)： | 3/10頁(yè) |
| 文件大小： | 164K |
| 代理商： | RT9228CS |
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)
V
REF
1.240
1.265
1.290
V
Linear Regulator
Regulation
10mA
<
I
VOUT2
<
150mA
FB2 Rising
-2.5
--
2.5
%
Under-voltage Level
--
75
87
%
Under-voltage Hysteresis
--
100
--
mV
Over-current Protection
I
OVP
180
230
--
mA
Over-current Protection During Start-up
--
700
--
mA
Linear Controller
Regulation
VSEN3 = GATE3
0
<
I
GATE3
<
20mA
FB3 Rising
-2.5
--
2.5
%
Under-voltage Level
--
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
R
UGATE1
VCC = 12V
VCC - V
UGATE1
= 1V
--
3
7
UGATE Sink
R
UGATE1
V
UGATE1
= 1V
VCC = 12V
V
LGATE1
= 2V
--
3
7
LGATE Source
I
LGATE1
--
1
--
A
LGATE Sink
R
LGATE1
V
LGATE1
= 1V
--
2
6
Protection
V
OUT1
Over-voltage Trip
FAULT Souring Current
VSEN1 Rising
112
115
120
%
I
OVP
V
FAULT
= 8V
10
14
--
mA
OCSET1 Current Source
I
OCSET
V
OCSET1
= 4.5V
170
200
230
μ
A
Soft-start Current
I
SS
V
SS
= 1V
--
11
--
μ
A
Power Good
V
OUT1
Upper Threshold
VSEN1 Rising
108
--
112
%
V
OUT1
Under Voltage
VSEN1 Rising
89
--
95
%
V
OUT1
Hysteresis (VSEN1/DACOUT)
PGOOD Voltage Low
Upper/Lower Threshold
--
2
--
%
I
PGOOD
= -4mA
--
--
0.5
V
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