MIC38HC45 Overview
The MIC38HC4x family are fixed frequency current-mode PWM controllers with 1A drive current capability. Micrel’s BiCMOS devices are pin-patible with 384x bipolar devices. Their high output drive, with fast rise and fall times, bined with low startup current make it an ideal PWM controller where high efficiency is required.
MIC38HC45 Key Features
- Fast 20ns output rise and 15ns output fall times
- 40°C to +85°C temperature range exceeds UC284x specifications
- High-performance, low-power BiCMOS Process
- Ultralow start-up current (50µA typical)
- Low operating current (4mA typical)
- High output drive (1A peak current, HC version)
- CMOS outputs with rail-to-rail swing
- Current-mode operation up to 500kHz
- Trimmed 5V bandgap reference
- Pin-for-pin patible with UC3842/3843/3844/3845(A)