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NCP1239 是一款固定频率电流模式控制器,具有动态自供电功能。此功能可激活内部启动电流源使其在启动期间、瞬变、锁存、待机等期间为控制器供电,大大简化了辅助电源和 Vcc 电容器的设计。 该控制器供电范围高达 35 V,具有带抖动的 65 kHz 或 100 kHz 开关电路,在峰值电流模式控制下运行。当辅助侧功率开始降低时,该控制器将其开关频率自动折回至最低 26 kHz 的水平。当功率进一步下降时,该零部件进入跳过周期,同时对峰值电流进行限制,确保轻型负载条件下的卓越能效。 它具有基于计时器的故障检测可确保过载检测,还具有可调节补偿,有助于保持最大功率,而无论输入电压如何。
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产品:
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可订购器件:
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状态
CAD Models
Compliance
Package Type
Case Outline
MSL Type
MSL Temp (°C)
Container Type
Container Qty.
ON Target
Topology
Control Mode
fsw Typ (kHz)
Stand-by Mode
UVLO (V)
Short Circuit Protection
Latch
Soft Start
VCC Max (V)
Drive Cap. (mA)
Reference Price
NCP1239AD100R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
100
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239AD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
N
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3398
More Details
NCP1239BD100R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
100
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239BD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239CD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239DD100R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
F
Flyback
Current Mode
100
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239DD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239ED100R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
100
Yes
8
Yes
No
Yes
35
500 / 500
$0.3419
More Details
NCP1239ED65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
No
Yes
35
500 / 500
$0.3419
More Details
NCP1239FD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239GD100R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
100
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239HD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239ID65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
No
Yes
35
500 / 500
$0.3368
More Details
NCP1239JD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3398
More Details
NCP1239KD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3447
More Details
NCP1239LD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3419
More Details
NCP1239MD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
No
Yes
35
500 / 500
$0.3405
More Details
NCP1239ND65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.3398
More Details
NCP1239PD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
No
Yes
35
500 / 500
$0.3425
More Details
NCP1239QD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
No
Yes
35
500 / 500
$0.3419
More Details
NCP1239RD65R2G
Active
Pb
A
H
P
SOIC-7
1
260
REEL
2500
Y
Flyback
Current Mode
65
Yes
8
Yes
Yes
Yes
35
500 / 500
$0.322
More Details
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