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參數(shù)資料
| 型號： | RT9238CS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | VRM 8.5 PWM AND TRIPLE LINEAR POWER SYSTEM CONTROLLER |
| 中文描述： | VRM電源8.5脈寬調(diào)制和三線性電源系統(tǒng)控制器 |
| 文件頁數(shù)： | 6/24頁 |
| 文件大?。?/td> | 434K |
| 代理商： | RT9238CS |
RT9238
Preliminary
www.richtek-ic.com.tw
6
DS9238-01 July 2001
Parameter
Symbol
Test Conditions
Min
Typ
Max
Units
Linear Regulators (V
OUT2
, V
OUT3
, and V
OUT4
)
VSEN3,4 Voltage Regulation
V
REG2,3,4
FIX = 0V
1.240 1.265 1.290
V
VSEN2 Regulation Voltage
V
REG2
1.180 1.200 1.240
V
VSEN3 Regulation Voltage
V
REG3
FIX = open
1.455 1.500 1.545
V
VSEN3 Bias Current
IB
VSEN3
FIX = open
--
260
--
μ
A
VSEN4 Regulation Voltage
V
REG4
FIX = open
1.746 1.800 1.854
V
VSEN4 Bias Current
IB
VSEN4
FIX = open
--
350
--
μ
A
Under-Voltage Level
(All Linears) (VSEN/VREG)
VSEN3,4 Rising
--
75
--
%
Under-Voltage Hysteresis
(All Linears) (VSEN/VREG)
VSEN3,4 Falling
--
100
--
mV
Output Drive Current (All Linears)
VAUX – V
DRIVER2,3,4
> 0.6V
20
40
--
mA
Synchronous PWM Controller Error Amplifier
DC Gain
--
65
--
dB
PWM Controller Gate Driver
UGATE Source
R
UGATE1
VCC = 12V
VCC-V
UGATE1
= 1V
--
4
7
UGATE Sink
R
UGATE1
V
UGATE1
= 1V
--
3
7
LGATE Source
I
LGATE1
VCC = 12V, V
LGATE1
= 2V
--
1
--
A
LGATE Sink
R
LGATE1
V
LGATE1
= 1V
--
2
6
Protection
V
OUT1
Over-Voltage Trip
FAULT Souring Current
FB1 Rising
112
118
125
%
V
FAULT
= 8V
5
10
--
mA
OCSET1 Current Source
I
OCSET
V
OCSET1
= 4.5V
170
200
230
μ
A
Soft-Start Current
I
SS13,24
V
SS13,SS24
= 2V
--
28
--
μ
A
Power Good
V
OUT1
Upper Threshold
FB1 Rising
108
--
112
%
V
OUT1
Under Voltage
FB1 Rising
87
--
92
%
V
OUT1
Hysteresis (FB1/DACOUT)
VTTPG Upper Threshold
Upper/Lower Threshold
--
2
--
%
VSEN2 Rising
--
1.08
--
V
VTTPG Delay Threshold
SS13 Rising
--
1.25
--
V
VTTPG Voltage Low
V
VTTPG
I
VTTPG
= -4mA
--
--
0.5
V
PGOOD Voltage Low
V
PGOOD
I
PGOOD
= -4mA
--
--
0.5
V
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