SG1846J

电流模式PWM控制器 CURRENT MODE PWM CONTROLLER

DESCRIPTION

The SG1846 family of control ICs provides all of the necessary features to implement fixed frequency, current mode control schemes while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load response characteristics, and a simpler, easier-to-design control loop.

FEATURES

• Automatic feed forward compensation

• Programmable pulse by pulse current limiting

• Automatic symmetry correction in push-pull configuration

• Enhanced load response characteristics

• Parallel operation capability for modular power systems

• Differential current sense amplifier with wide common mode range

• Double pulse suppression

• 200mA totem-pole outputs

• ± 1% bandgap reference

• Under-voltage lockout

• Soft-start capability

• Shutdown capability

• 500KHz operation

HIGH RELIABILITY FEATURES - SG1846

♦Available to MIL-STD - 883

♦Radiation data available

♦LMI level "S" processing available