MIC38C45 Datasheet PDF - Micrel

●General Description

●The MIC38C4x are fixed frequency, high performance, current-mode PWM controllers. Micrel’s BiCMOS devices are pin compatible with 384x bipolar devices but feature several improvements.

●Features

●•  Fast 40ns output rise and 30ns output fall times

●•  –40°C to +85°C temperature range meets UC284x specifications

●•  High-performance, low-power BiCMOS Process

●•  Ultralow start-up current (50µA typical)

●•  Low operating current (4mA typical)

●•  CMOS outputs with rail-to-rail swing

●•  ≥ 500kHz current-mode operation

●•  Trimmed 5V bandgap reference

●•  Pin-for-pin compatible with UC3842/3843/3844/3845(A)

●•  Trimmed oscillator discharge current

●•  UVLO with hysteresis

●•  Low cross-conduction currents

●Features

●•  Fast 40ns output rise and 30ns output fall times

●•  –40°C to +85°C temperature range

●meets UC284x specifications

●•  High-performance, low-power BiCMOS Process

●•  Ultralow start-up current (50µA typical)

●•  Low operating current (4mA typical)

●•  CMOS outputs with rail-to-rail swing

●•  ≥ 500kHz current-mode operation

●•  Trimmed 5V bandgap reference

●•  Pin-for-pin compatible with UC3842/3843/3844/3845(A)

●•  Trimmed oscillator discharge current

●•  UVLO with hysteresis

●•  Low cross-conduction currents