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
