MC33363B

Features:

• OnChip 700 V, 1.0 A SenseFET Power Switch
• Rectified 240 Vac Line Source Operation
• OnChip 450 V Active OffLine Startup FET
• Latching PWM for Double Pulse Suppression
• CycleByCycle Current Limiting
• Input Undervoltage Lockout with Hysteresis
• OverVoltage Protection
• Trimmed Internal Bandgap Reference
• Internal Thermal Shutdown


Pinout




Specifications

Rating	Symbol	Value	Unit
Power Switch (Pin 16) Drain Voltage Drain Current	V DS I DS	700 1.0	V A
Startup Input Voltage (Pin 1, Note 1) Pin 3 = Gnd Pin 3 1000 F to ground	Vin	400 500	V
Power Supply Voltage (Pin 3)	VCC	40	V
Input Voltage RangeVoltage Feedback Input (Pin 10) Compensation (Pin 9) Overvoltage Protection Input (Pin 11) R (Pin 6) TCT (Pin 7)	VIR	1.0 to Vreg	V
Thermal Characteristics P Suffix, DualInLine Case 648E Thermal Resistance, JunctiontoAir Thermal Resistance, JunctiontoCase DW Suffix, Surface Mount Case 751GThermal Resistance, JunctiontoAir Thermal Resistance, JunctiontoCase	RJA RJC RJA RJC	80 15 95 15	°C/W
Operating Junction Temperature	TJ	25 to +150
Storage Temperature	Tstg	55 to +150

Description

The MC33363B is a monolithic high voltage switching regulator that is specifically designed to operate from a rectified 240 Vac line source. MC33363B features an onchip 700 V/1.0 A SenseFET power switch, 450 V active offline startup FET, duty cycle controlled oscillator, current limiting comparator with a programmable threshold and leading edge blanking, latching pulse width modulator for double pulse suppression, high gain error amplifier, and a trimmed internal bandgap reference. Protective features include cyclebycycle current limiting, input undervoltage lockout with hysteresis, overvoltage protection, and thermal shutdown. MC33363B is available in a 16lead dualinline and wide body surface mount packages.