onsemi NCP1200D100R2G

AC to DC Switching Converter Off-Line Switcher/SMPS Controller 103kHz T/R 8-Pin SOIC N

NCP1200 Series 16 V 74 / 87 % Duty Cycle PWM Current-Mode Controller - SOIC-8

NCP1200 ACTIVE NOT REC (Last Updated: 3days ago) Current Limiting Over Load Short Circuit Tape & Reel (TR) dc ac converter 11V 10.16mm 550mW 100kHz

IC, PWM CONTROLLER; Input Voltage: 16V; Output Voltage: -; Output Current: 250mA; Supply Voltage Min: 6.3V; Supply Voltage Max: 12.5V; Controller IC Case Style: SOIC; Available until stocks are exhausted Alternative available

Housed in SO-8 or DIP-8 package the NCP1200 represents a major leap toward ultra-compact Switch-Mode Power Supplies. Thanks to a novel concept the circuit allows the implementation of a complete offline battery charger or a standby SMPS with few external components. Furthermore an integrated output short-circuit protection lets the designer build an extremely low-cost AC/DC wall adapter associated with a simplified feedback scheme. With an internal structure operating at a fixed 40 kHz 60 kHz or 100 kHz the controller drives low gate-charge switching devices like an IGBT or a MOSFET thus requiring a very small operating power. Thanks to current-mode control the NCP1200 drastically simplifies the design of reliable and cheap offline converters with excellent audio- susceptibility and inherent pulse-by-pulse control. When the current setpoint falls below a given value e.g. the output power demand diminishes the IC automatically enters the so-called skip cycle mode and provides excellent efficiency at light loads. Because this occurs at low peak current no acoustic noise takes place. Finally the IC is self-supplied from the DC rail eliminating the need of an auxiliary winding. This feature ensures operation in presence of low output voltage or shorts.