1203P100

Product Summary

The 1203P100 is a PWM Current-Mode Controller. With an internal structure operating at a fixed 40 kHz, 60 kHz or 100 kHz switching frequency, the 1203P100 features a high voltage startup FET which ensures a clean and loss less startup sequence. Its current-mode control naturally provides good audio susceptibility and inherent pulse.by.pulse control. The 1203P100 includes an efficient protective circuitry which, in presence of an output over load condition, disables the output pulses while the device enters a safe burst mode, trying to restart. Once the default has gone, the 1203P100 auto recovers. Finally, a temperature shutdown with hysteresis helps building safe and robust power supplies.

Parametrics

1203P100 absolute maximum ratings: (1)Power Supply Voltage, VCC, Drv: 16 V; (2)Power Supply Voltage on all other pins except Pin 5 (Drv), Pin 6 (VCC) and Pin 8 (HV): -0.3 to 10 V; (3)Maximum Current into all pins except Pin 6 (VCC) and Pin 8 (HV) when 10 V ESD diodes are activated: 5.0 mA; (4)Thermal Resistance, Junction.to.Air, PDIP8 Version, RθJA; (5): 100℃/W; (6)Maximum Junction Temperature, TJMAX: 150℃; (7)Temperature Shutdown: 170℃; (8)Hysteresis in Shutdown: 30℃; (9)Operating Temperature Range, TJ: -40 to +125℃; (10)Storage Temperature Range, Tstg: -60 to +150℃; (11)ESD Capability, HBM Model, All pins except Pin 6 (VCC) and Pin 8 (HV): 2.0 kV; (12)ESD Capability, Machine Model: 200 V; (13)Maximum Voltage on Pin 6 (VCC) and Pin 8 (HV) Decoupled to Ground with 10μF: 450 V.

Features

1203P100 features: (1)High-Voltage Startup Current Source; (2)Auto-Recovery Internal Output Short-Circuit Protection; (3)Extremely Low No-Load Standby Power; (4)Current-Mode with Adjustable Skip-Cycle Capability; (5)Internal Leading Edge Blanking; (6)250 mA Peak Current Capability; (7)Internally Fixed Frequency at 40 kHz, 60 kHz and 100 kHz; (8)Direct Optocoupler Connection; (9)Undervoltage Lockout at 7.8 V Typical; (10)SPICE Models Available for TRANsient and AC Analysis; (11)Pin to Pin Compatible with NCP1200; (12)Pb-Free Packages are Available.

Diagrams