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Offline Regulators | NCP1050
概览
The NCP1050 through NCP1055 are monolithic high voltage regulators that enable end product equipment to be compliant with low standby power requirements. This device series combines the required converter functions allowing a simple and economical power system solution for office automation, consumer, and industrial products. These devices are designed to operate directly from a rectified AC line source. In flyback converter applications they are capable of providing an output power that ranges from 6.0 W to 40 W with a fixed AC input of 100 V, 115 V, or 230 V, and 3.0 W to 20 W with a variable AC input that ranges from 85 V to 265 V. This device series features an active startup regulator circuit that eliminates the need for an auxiliary bias winding on the converter transformer, fault logic with a programmable timer for converter overload protection, unique gated oscillator configuration for extremely fast loop response with double pulse suppression, power switch current limiting, input undervoltage lockout with hysteresis, thermal shutdown, and auto restart fault detection. These devices are available in an economical 8-pin dual-in-line package.
- AC–DC Converters
- Wall Adapters
- Portable Electronic Chargers
- Low Power Standby and Keep–Alive Supplies
- Startup Circuit Eliminates the Need for Transformer Auxiliary Bias Winding
- Optional Auxiliary Bias Winding Override for Lowest Standby Power Applications
- Converter Output Overload and Open Loop Protection
- Auto Restart Fault Protection
- IC Thermal Fault Protection
- Unique, Dual Edge, Gated Oscillator Configuration for Extremely Fast Loop Response
- Oscillator Frequency Dithering with Controlled Slew Rate Driver for Reduced EMI
- Low Power Consumption Allowing European Blue Angel Compliance
- On–Chip 700 V Power Switch Circuit and Active Startup Circuit
- Rectified AC Line Source Operation from 85 V to 265 V
- Input Undervoltage Lockout with Hysteresis
- Oscillator Frequency Options of 44 kHz, 100 kHz, 136 kHz
- Pb-Free Packages are Available
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NCP1050P100G
Pb
A
H
P
PDIP-7
NA
0
TUBE
50
N
Current Mode
100
Yes
Yes
30
700
100
Yes
6.3
Yes
Yes
No
No
Yes
Price N/A
More Details
NCP1050P136G
Pb
A
H
P
PDIP-7
NA
0
TUBE
50
N
Current Mode
136
Yes
Yes
30
700
100
Yes
6.3
Yes
Yes
No
No
Yes
Price N/A
More Details
NCP1050P44G
Pb
A
H
P
PDIP-7
NA
0
TUBE
50
N
Current Mode
44
Yes
Yes
30
700
100
Yes
6.3
Yes
Yes
No
No
Yes
Price N/A
More Details
NCP1050ST100T3G
Pb
A
H
P
SOT-223-4 / TO-261-4D
1
260
REEL
4000
N
Current Mode
100
Yes
Yes
30
700
100
Yes
6.3
Yes
Yes
No
No
Yes
Price N/A
More Details
NCP1050ST136T3G
Pb
A
H
P
SOT-223-4 / TO-261-4D
1
260
REEL
4000
N
Current Mode
136
Yes
Yes
30
700
100
Yes
6.3
Yes
Yes
No
No
Yes
Price N/A
More Details
NCP1050ST44T3G
Pb
A
H
P
SOT-223-4 / TO-261-4D
1
260
REEL
4000
N
Current Mode
44
Yes
Yes
30
700
100
Yes
6.3
Yes
Yes
No
No
Yes
Price N/A
More Details
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