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參數(shù)資料
| 型號： | NCP1205P2 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback |
| 中文描述： | SWITCHING CONTROLLER, 125 kHz SWITCHING FREQ-MAX, PDIP14 |
| 封裝： | PLASTIC, DIP-14 |
| 文件頁數(shù)： | 7/20頁 |
| 文件大?。?/td> | 163K |
| 代理商： | NCP1205P2 |
NCP1205
http://onsemi.com
7
ELECTRICAL CHARACTERISTICS
(continued)
(For typical values T
A
= 25
°
C, for min/max values T
J
= 25
°
C to +125
°
C,
Max T
J
= 150
°
C, V
CC
= 12 V unless otherwise noted.)
Pin No.
Characteristics
DIP8
DIP14
Symbol
Min
Typ
Max
Unit
Current Sense Comparator (continued)
Propagation Delay from Current Detection to Gate OFF
State
6
11
T
del
–
200
250
ns
Leading Edge Blanking (LEB)
6
11
T
leb
–
200
–
ns
Frequency Modulator
Minimum Frequency Operation @ Ct = 1.0
η
F and
V
CC
= 35 V
4
5
F
min
–
0
–
kHz
Maximum Frequency Operation @ Ct = 1.0
η
F and
V
CC
= 35 V
4
5
F
max
90
110
125
kHz
Minimum Ct Charging Current (Note 3)
4
5
I
Ct
min
–
0
–
μ
A
Maximum Ct Charging Current (Note 3)
4
5
I
Ct
max
280
350
420
μ
A
Discharge Time @ Ct = 1.0
η
F
4
5
–
–
500
–
ns
Drive Output
Output Voltage Rise Time @ C
L
= 1.0
η
F ( V = 10 V)
7
12
t
r
–
30
50
ns
Output Voltage Fall Time @ C
L
= 1.0
η
F ( V = 10 V)
7
12
t
f
–
30
50
ns
Clamped Output Voltage @ V
CC
= 35 V (Note 4)
7
12
V
DRV
11
13
16
V
Voltage Drop on the Stage @ V
CC
= 10 V (Note 4)
12
12
V
DRV
–
–
0.5
V
Undervoltage Lockout
Startup Threshold (V
CC
Increasing)
8
13
UVLO
H
13.5
15
16.5
V
Minimum Operating Voltage (V
CC
Decreasing)
8
13
UVLO
L
6.5
7.2
8.0
V
Startup Current Source
Maximum Voltage, Pin 1 Grounded
1
1
–
–
450
–
V
Maximum Voltage, Pin 1 Decoupled (470
μ
F)
1
1
–
–
500
–
V
Startup Current Source Flowing through Pin 1
1
1
–
2.3
3.0
4.8
mA
Leakage Current in Offstate @ Vpin 1 = 500 V
1
1
–
–
32
70
μ
A
Device Current Consumption
V
CC
less than UVLO
H
8
13
–
–
1.5
1.8
mA
V
CC
= 35 V and Fsw = 2.0 kHz, C
L
= 1.0
η
F
8
13
–
–
1.2
3.0
mA
V
CC
= 35 V and Fsw = 125 kHz, C
L
= 1.0
η
F
8
13
–
–
3.0
4.0
mA
Startup Current to V
CC
Capacitor
3. Typical capacitor swing is between 0.5 V and 3.5 V.
4. Guaranteed by design, T
J
= 25
°
C.
8
13
–
1.4
–
–
mA
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