ON UC3845BN

升压，升压/降压反激，升压7.6V ~ 30V

Overview

The UC3845BN is a high performance current mode PWM Controller IC. It is provides the necessary features to implement off-line or DC-to-DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise duty cycle control under-voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-channel MOSFETs is low in the off-state.

Features

Tube Package
Transistor Driver Outputs
Switching Frequency: 500kHz
Frequency Control
PULSE WIDTH MODULATION
Max Duty Cycle: 50 %
Frequency: 250kHz

Through Hole Mounting Type

Applications

There are a lot of STMicroelectronics
UC3845BN DC to DC converter applications.

• Servo drive system
• Digital display device
• Linear guide
• Ball screw pair
• Computer application technology
• Network technology
• Automation technology
• CMM
• Various precision measuring instruments
• Various precision measuring detectors