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MIC38C45-1BM from MICREL

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MIC38C45-1BM

Manufacturer: MICREL

BiCMOS Current-Mode PWM Controllers

Partnumber Manufacturer Quantity Availability
MIC38C45-1BM,MIC38C451BM MICREL 107 In Stock

Description and Introduction

BiCMOS Current-Mode PWM Controllers **Enhance Power Management with the MIC38C45-1BM PWM Controller**  

The MIC38C45-1BM is a high-performance current-mode pulse-width modulation (PWM) controller designed to optimize power supply efficiency and reliability in a wide range of applications. Engineered for precision and versatility, this advanced IC is an ideal choice for switch-mode power supplies (SMPS), DC-DC converters, and offline power systems.  

Featuring a robust architecture, the MIC38C45-1BM operates at a fixed frequency of up to 1MHz, ensuring stable performance in demanding environments. Its current-mode control enhances transient response while minimizing output ripple, making it well-suited for applications requiring tight voltage regulation. The device includes an integrated high-current totem-pole output driver, reducing external component count and simplifying circuit design.  

Key benefits of the MIC38C45-1BM include programmable soft-start functionality, which prevents excessive inrush current during startup, and cycle-by-cycle current limiting for enhanced protection against overloads. Additionally, its undervoltage lockout (UVLO) feature ensures reliable operation by preventing erratic behavior at low input voltages.  

With a wide input voltage range and low standby power consumption, the MIC38C45-1BM is optimized for energy-efficient designs. Its compact SOIC-8 package allows for space-saving integration into both industrial and consumer electronics, from telecom equipment to power adapters.  

For engineers seeking a dependable PWM controller that balances performance with ease of implementation, the MIC38C45-1BM delivers a compelling solution, combining precision control with robust protection features. Whether upgrading an existing power supply or designing a new system, this component provides the flexibility and reliability needed for modern power management challenges.

Application Scenarios & Design Considerations

BiCMOS Current-Mode PWM Controllers

Alternative Part Number

  • UC3845BN --: Industry-standard current-mode PWM controller with the same 50% max duty cycle and 8-pin DIP pinout, widely available and directly interchangeable in most designs.
  • SG3845N --: Pin-compatible current-mode PWM controller with equivalent 50% duty cycle limit and 8-pin DIP package, suitable drop-in replacement.
  • TL3845P --: Low-cost current-mode PWM controller offering the same 50% duty cycle and 8-pin DIP footprint, functionally equivalent for most applications.

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