Item Specifications and Additional Information:
The MC33370 is a monolithic high voltage power
switching regulator that combines the required converter functions with a unique
programmable state controller, allowing a simple and economical powersystem
solution for office automation, consumer, and industrial products.
These devices are designed to operate directly from a rectified AC line source, and in flyback
converter applications are capable of providing an output power in excess of
150 W with a fixed AC input of 100 V, 115 V, or 230 V, and in excess of 90 W
with a variable AC input that ranges from 85 V to 265 V.
This device series features a programmable state controller, an on-chip
700 V SENSEFETE power switch circuit, 700 V active off-line startup circuit
including a high voltage JFET and a low voltage MOSFET, auto restart logic,
fixed frequency duty cycle controlled oscillator, current limiting comparator
with leading edge blanking, latching pulse width modulator for double pulse
suppression, and a high gain amplifier with a bandgap reference. Protective
features include cycle-by-cycle current limiting, input undervoltage lockout
with hysteresis, and a non-latching thermal shutdown.
-Programmable State Controller
-On-Chip 700 V SENSEFET Power Switch Circuit
-Rectified AC Line Source Operation from 85 V to 265 V
-On-Chip 700 V Active Off-Line Start-Up Circuit
-Latching PWM for Double Pulse Suppression
-Cycle-By-Cycle Current Limiting
-Input Undervoltage Lockout with Hysteresis
-Non-Latching Internal Thermal Shutdown
-Enhanced Functionality Over TOP200 and TOP221 Series
Manufactured by: Motorola
Part Number: MC33370T
Full Datasheet MC33370T |
