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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)： | 4/9頁 |
| 文件大?。?/td> | 108K |
| 代理商： | ML4825 |
ML4825
4
REV. 1.0 10/12/2000
ELECTRICAL CHARACTERISTICS
(Continued)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ERROR AMPLIFIER
(Continued)
CMRR
1.5V < V
CM
< 5.5V
C suffix
I suffix
C suffix
I suffix
75
75
80
80
1
95
95
110
110
2.5
dB
dB
dB
dB
mA
PSRR
10V < V
CC
< 30V
Output Sink Current
V
EA OUT A
= 1.0V
V
EA OUT A
= 4.0V
I
EA OUT A
= –0.5mA
I
EA OUT A
= 1mA
Output Source Current
Output High Voltage
Output Low Voltage
Unity Gain Bandwidth
–0.5
4.0
0
3
–1.3
4.7
0.5
5.5
mA
V
V
MHz
5.0
1.0
Slew Rate
6
12
V/
μ
s
PWM COMPARATOR
Ramp Bias Current
V
RAMP
= 0V, T
A
> 0°C
C suffix
I suffix
C suffix
I suffix
–1
–5
–5
100
100
1.7
80
μ
A
μ
A
%
%
V
nS
Duty Cycle Range
85
80
1.1
E/A OUT Zero DC Threshold
Delay to Output
V
RAMP
= 0V
1.25
50
SOFT START
Charge Current
SS = 0.5V
–3
–9
–20
μ
A
Discharge Current
SS = 1V
1
mA
CURRENT LIMIT/SHUTDOWN
I
LIM
Bias Current
0V < V
I(LIM)
< 0.5V
C suffix
I suffix
–10
–10
0.9
1.25
1.25
10
10
1.1
1.55
1.60
70
μ
A
μ
A
V
V
V
ns
Current Limit Threshold
Shutdown Threshold
1
T
A
> 0°C
T
A
< 0°C
1.4
1.4
40
Delay to Output
OUTPUT
Output Low Level
I
OUT
= 20mA
I
OUT
= 200mA
I
OUT
= –20mA
I
OUT
= –200mA
V
C
= 30V
C
L
= 1000pF
0.25
1.2
13.5
13.0
100
30
0.4
2.2
V
V
V
V
μ
A
ns
Output High Level
13.0
12.0
Collector Leakage
Rise/Fall Time
500
60
UNDERVOLTAGE LOCKOUT
Start Threshold
UVLO Hysteresis
8.8
0.3
9.2
0.8
9.6
1.2
V
V
SUPPLY
Start Up Current
V
CC
= 8V
C suffix
I suffix
0.1
0.1
1.1
2.5
3.5
mA
mA
I
CC
V
INV,
V
RAMP,
V
I(LIM)/SD
= 0V,
V
NI
= 1V, T
A
= 25°C
10
26
33
mA
Note 1:
Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
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