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參數(shù)資料
| 型號： | RT9238 |
| 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)： | 5/24頁 |
| 文件大?。?/td> | 434K |
| 代理商： | RT9238 |
Preliminary
RT9238
DS9238-01 July 2001
www.richtek-ic.com.tw
5
Absolute Maximum Ratings
z
Supply Voltage
+15V
GND
0.3V ~ V
CC
+0.3V
GND
0.3V ~ 7V
0
°
C ~ +70
°
C
0
°
C ~ +125
°
C
65
°
C ~ +150
°
C
300
°
C
z
FAULT/VID4 and GATE Voltage
z
Input, Output or I/O Voltage
z
Ambient Temperature Range
z
Operating Junction Temperature Range
z
Storage Temperature Range
z
Lead Temperature (Soldering, 10 sec.)
z
Package Thermal Resistance
SOP-28,
θ
JA
60
°
C/W
Recommended Operating Conditions
z
Supply Voltage
+12V
±
10%
0
°
C to 70
°
C
0
°
C to 125
°
C
z
Ambient Temperature Range
z
Junction Temperature Range
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
Typ
Max
Units
VCC Supply Current
Nominal Supply Current
I
CC
UGATE1, LGATE1, DRIVE2,
DRIVE3, and DRIVE4 Open
--
10
--
mA
Power-On Reset
VCC Rising Threshold
V
OCSET1
= 4.5V
6.5
--
9.5
V
VCC Falling Threshold
V
OCSET1
= 4.5V
6
--
9
V
Rising VAUX Threshold
V
OCSET1
= 4.5V
--
1.5
--
V
VAUX Threshold Hysteresis
V
OCSET1
= 4.5V
--
0.2
--
V
Rising V
OCSET1
Threshold
DAC AND Band Gap Reference
--
1.25
--
V
DAC (VID25-VID3) Input Low Voltage
--
--
0.8
V
DAC(VID25-VID3) Input High Voltage
2.0
--
--
V
DACOUT Voltage Accuracy
VDAC + 40mV
-10
--
+20
mV
Oscillator
Free Running Frequency
180
200
225
KHz
Ramp Amplitude
V
OSC
--
1.9
--
V
P-P
To be continued
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