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Offline Regulators | NCP1028
概览
The NCP1028 offers a new solution targeting output power levels from a few watts up to 15W in a universal mains flyback application. Our proprietary high-voltage technology lets us include a power MOSFET together with a startup current source, all directly connected to the bulk capacitor. To prevent lethal runaway in low input voltage conditions, an adjustable brown-out circuitry blocks the activity until sufficient input level is reached.
Current-mode operation together with an adjustable ramp compensation offers superior performance in universal mains applications.
Protection wise, a timer detects an overload or a short-circuit and stops all operations, ensuring a safe auto-recovery, low duty cycle burst operation. An integrated, auto-recovery.
Finally, a great RDS(on) figure makes the circuit an excellent choice for standby/auxiliary offline power supplies or applications requiring higher output power levels.
- Medium Power AC-DC Adapters for Chargers
- Auxiliary power supply
- Desktop PC
- Flat TVs
- DVD, STB
- Skips cycles on low power demand
- Short circuit protection independent of the AUX winding
- Overpower protection
- Built-in 700 V MOSFET with Typical RDS(on) of 5.8 , Tj = 25C
- Fixed Peak Current of 800 mA
- Internal Current Source for Clean and Lossless Startup Sequence
- Programmable Brown-Out Input for Low Input Voltage Detection
- Input to Permanently Latchoff the Part
- Internal Frequency Jittering for Improved EMI Signature
- No-Load Input Standby Power of 85 mW @ 265 Vac
- 500 mW Loaded, Input Power of 715 mW @ 230 Vac
- Programmable Over Power Protection
- Medium Power AC-DC power supply for CE apparatus
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PDIP-7
NA
0
TUBE
50
N
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65
Yes
Yes
5.6
700
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Obsolete
Pb
A
H
P
PDIP-7
NA
0
TUBE
50
N
Current Mode
100
Yes
Yes
5.6
700
800
Yes
N/A
Yes
Yes
Yes
Yes
No
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