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參數(shù)資料
| 型號： | ML4825 |
| 廠商： | Fairchild Semiconductor Corporation |
| 英文描述： | High Frequency PWM Controller(高頻PWM控制器) |
| 中文描述： | 高頻PWM控制器（高頻脈寬調(diào)制控制器） |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 108K |
| 代理商： | ML4825 |
ML4825
REV. 1.0 10/12/2000
3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, R
T
= 3.65k
,
C
T
= 1000pF, T
A
= Operating Temperature Range, V
CC
= 15V (Note 1).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
Initial Accuracy
T
J
= 25
C
10V < V
CC
< 30V, T
A
= 25°C
360
400
440
kHz
Voltage Stability
–2
0.2
2
%
Temperature Stability
5
%
Total Variation
Line, temperature
340
460
kHz
Clock Out High
3.9
4.5
V
Clock Out Low
2.3
2.9
V
Ramp Peak
2.6
2.8
3.0
V
Ramp Valley
0.7
1.0
1.25
V
Ramp Valley to Peak
1.6
1.8
2.0
V
REFERENCE
Output Voltage
T
J
= 25
C, I
O
= 1mA
C suffix
5.00
5.10
5.20
V
I suffix
5.00
5.10
5.20
V
Line Regulation
10V < V
CC
< 30V
1mA < I
O
< 10mA
–55°C < T
J
< 150°C
Line, load, temperature
–20
2
20
mV
Load Regulation
–20
5
20
mV
Temperature Stability
0.2
0.4
%
Total Variation
C suffix
4.95
5.25
V
I suffix
4.95
5.25
V
Output Noise Voltage
10Hz to 10kHz
50
μ
V
Long Term Stability
T
J
= 125
C, 1000 hours
V
REF
= 0V
5
25
mV
Short Circuit Current
–15
–50
–100
mA
ERROR AMPLIFIER
Input Offset Voltage
C suffix
–15
15
mV
I suffix
–15
15
mV
Input Bias Current
0.6
3
μ
A
Input Offset Current
0.1
1
μ
A
Open Loop Gain
1 < V
O
< 4V
60
96
dB
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
Supply Voltage (V
C,
V
CC
) ...........................................30V
Output Current, Source or Sink (OUT A, OUT B)
DC .......................................................................0.5A
Pulse (0.5
μ
s) .........................................................2.0A
Analog Inputs
(INV, NI, RAMP)............................... GND –0.3V to 7V
(SS, I
LIM
)........................................... GND –0.3V to 6V
CLOCK Output Current .......................................... –5mA
E/A OUT Output Current ..........................................5mA
Soft Start Sink Current.............................................20mA
R
T
Charging Current ............................................... –5mA
Junction Temperature
ML4825IX, ML4825CX ...................................... 150
C
Storage Temperature Range .....................–65
C to 150
C
Lead Temperature (soldering 10 sec.)..................... 260
C
Thermal Resistance (
θ
JA
)
Plastic DIP or SOIC..........................................65
C/W
Plastic Chip Carrier (PCC) ................................60°C/W
OPERATING CONDITIONS
Temperature Range
ML4825CX ................................................0
C to 70
C
ML4825IX..............................................–40
C to 85
C
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