NCP1256 Description
Low Power Offline PWM Current Mode Controller with Brown-Out Protection NCP1256 The NCP1256 includes everything to build cost−effective switch mode power supplies ranging from a few watts up to several tens of watts. Housed in a tiny TSOP−6 package, the part can be supplied up to 30 V. It hosts a jittered 65 or 100−kHz switching circuitry operated in peak current mode control.
NCP1256 Key Features
- Fixed-frequency 65-kHz or 100-kHz Current-mode Control
- Adjustable Over Power Protection (OPP) Circuit, Disabled at Low
- Adjustable Brown Out Level
- Frequency Foldback down to 26 kHz and Skip-cycle in Light Load
- Internally-fixed Slope pensation Ramp
- Internally-fixed 4-ms Soft-start
- 70-ms Timer-based Auto-recovery Short-circuit Protection
- Frequency Jittering in Normal and Frequency Foldback Modes
- Double Hiccup Auto-recovery Short-circuit Protection
- Pre-short Ready for Latched OCP Option
NCP1256 Applications
- Ac−dc Adapters for Portable Devices, puters, Tablets etc