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MIC38HC44BM from MICREL

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MIC38HC44BM

Manufacturer: MICREL, MIC, MIC

BiCMOS 1A Current-Mode PWM Controllers

Partnumber Manufacturer Quantity Availability
MIC38HC44BM MICREL, MIC, MIC 18396 In Stock

Description and Introduction

BiCMOS 1A Current-Mode PWM Controllers **Enhance Your Power Supply Designs with the MIC38HC44BM Current Mode PWM Controller**  

The MIC38HC44BM is a high-performance current mode pulse-width modulation (PWM) controller designed to optimize power supply efficiency and reliability. Engineered for precision and versatility, this component is an ideal choice for applications requiring stable voltage regulation, including switch-mode power supplies (SMPS), DC-DC converters, and industrial power systems.  

Featuring a wide operating voltage range of 10V to 30V, the MIC38HC44BM ensures robust performance across diverse power supply architectures. Its current mode control architecture enhances transient response and simplifies loop compensation, making it easier to design stable and efficient power circuits. The device includes built-in protections such as undervoltage lockout (UVLO), cycle-by-cycle current limiting, and a programmable soft-start function, ensuring safe operation under varying load conditions.  

With a switching frequency capability of up to 1MHz, the MIC38HC44BM supports high-frequency designs, enabling smaller magnetics and reduced component footprints. Its totem-pole output stage delivers strong gate drive capability, minimizing switching losses in power MOSFETs. Additionally, the controller’s adjustable dead-time control allows designers to fine-tune efficiency and minimize shoot-through in synchronous rectifier applications.  

The MIC38HC44BM is available in an industry-standard SOIC-8 package, ensuring compatibility with existing PCB layouts and simplifying integration into new designs. Its combination of performance, protection features, and ease of use makes it a dependable solution for engineers seeking to improve power supply efficiency and reliability.  

Whether used in telecom infrastructure, industrial automation, or consumer electronics, the MIC38HC44BM delivers the precision and durability required for modern power management challenges. By incorporating this advanced PWM controller into your designs, you can achieve higher efficiency, better transient response, and enhanced system stability.

Application Scenarios & Design Considerations

BiCMOS 1A Current-Mode PWM Controllers

Alternative Part Number

  • UC3844BD1 --: Industry-standard current-mode PWM controller in the same functional class as the MIC38HC44, widely available and pin-compatible in SO-8.
  • TL3844D --: Direct functional equivalent current-mode PWM controller with similar UVLO and duty-cycle behavior, offered in SOIC package.
  • SG3844D --: Alternative 3844-series current-mode controller from a different vendor, suitable as a drop-in replacement in most designs.
  • TL3844P --: Equivalent current-mode PWM controller with similar UVLO and duty-cycle characteristics, offered by a major supplier with broad availability.
  • SG3844N --: Alternative current-mode PWM controller from a different series that matches the key operating parameters and can serve as a drop-in substitute in most applications.

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