MIC2145BMM

Product Overview

Category: Integrated Circuit (IC)
Use: Power Management
Characteristics:
- High efficiency
- Low quiescent current
- Wide input voltage range
- Small package size
Package: Miniature 10-pin MSOP (MM) package
Essence: Voltage Mode Synchronous Buck Regulator
Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

Input Voltage Range: 4.5V to 75V
Output Voltage Range: 0.8V to 60V
Switching Frequency: 100kHz to 2MHz
Maximum Output Current: 1.5A
Quiescent Current: 25µA
Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MIC2145BMM has a total of 10 pins:

VIN: Input voltage pin
PGND: Power ground pin
SW: Switching node pin
FB: Feedback pin
COMP: Compensation pin
SS/TR: Soft-start/Tracking pin
EN: Enable pin
VCC: Supply voltage pin
PG: Power good pin
GND: Ground pin

Functional Features

Voltage mode control with adjustable output voltage
Integrated high-side and low-side MOSFETs for synchronous buck regulation
Programmable soft-start and tracking function
Overcurrent protection (OCP) and thermal shutdown (TSD) features
Power good (PG) signal for monitoring the output voltage status
External compensation for stability optimization

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Wide input voltage range allows for versatile applications - Small package size enables space-saving designs - Low quiescent current minimizes power consumption

Disadvantages: - Maximum output current limited to 1.5A - Requires external compensation for stability optimization

Working Principles

The MIC2145BMM is a voltage mode synchronous buck regulator. It utilizes high-side and low-side MOSFETs to efficiently step down the input voltage to the desired output voltage. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the switching waveform to maintain a stable output. The soft-start/ tracking pin (SS/TR) provides a controlled startup and can be used for voltage tracking applications. The enable pin (EN) allows for on/off control of the regulator.

Detailed Application Field Plans

The MIC2145BMM is suitable for various power management applications, including but not limited to: - Industrial equipment - Telecom infrastructure - Automotive systems - Consumer electronics - LED lighting

Detailed and Complete Alternative Models

MIC2142BMM: Similar specifications, but with a lower maximum output current of 1A.
MIC2143BMM: Similar specifications, but with a higher maximum output current of 2A.
MIC2144BMM: Similar specifications, but with an adjustable switching frequency.
MIC2146BMM: Similar specifications, but with additional features such as overvoltage protection.

(Note: This list is not exhaustive and other alternative models may exist.)

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技術ソリューションにおける MIC2145BMM の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of MIC2145BMM in technical solutions:

Question: What is MIC2145BMM?
Answer: MIC2145BMM is a specific model of a buck regulator integrated circuit (IC) manufactured by Microchip Technology. It is designed for use in various technical solutions that require efficient power conversion.
Question: What is the input voltage range supported by MIC2145BMM?
Answer: MIC2145BMM supports an input voltage range of 4.5V to 75V, making it suitable for a wide range of applications.
Question: What is the output voltage range provided by MIC2145BMM?
Answer: The output voltage range of MIC2145BMM can be adjusted from 0.8V to 60V, allowing flexibility in meeting different voltage requirements.
Question: What is the maximum output current capability of MIC2145BMM?
Answer: MIC2145BMM can deliver a maximum output current of up to 1.5A, which makes it suitable for powering various electronic components.
Question: Can MIC2145BMM operate in a wide temperature range?
Answer: Yes, MIC2145BMM has a wide operating temperature range of -40°C to +125°C, enabling its use in both industrial and automotive applications.
Question: Does MIC2145BMM have built-in protection features?
Answer: Yes, MIC2145BMM incorporates several protection features such as overcurrent protection, thermal shutdown, and undervoltage lockout to ensure safe operation and prevent damage to the IC.
Question: Is MIC2145BMM suitable for battery-powered applications?
Answer: Yes, MIC2145BMM is well-suited for battery-powered applications due to its low quiescent current and high efficiency, which helps conserve battery life.
Question: Can MIC2145BMM be used in both step-up and step-down voltage conversion applications?
Answer: No, MIC2145BMM is specifically designed for step-down (buck) voltage conversion applications. For step-up (boost) applications, a different IC would be required.
Question: What type of package does MIC2145BMM come in?
Answer: MIC2145BMM is available in a miniature 10-pin MSOP (Mini Small Outline Package), which offers a compact footprint for space-constrained designs.
Question: Are there any application notes or reference designs available for MIC2145BMM?
Answer: Yes, Microchip Technology provides application notes and reference designs that can help engineers understand and implement MIC2145BMM effectively in their technical solutions. These resources can be found on the manufacturer's website.