MIC2168AYMM

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current, Wide Input Voltage Range
• Package: 8-Pin MSOP (Mini Small Outline Package)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.6V
• Output Current: Up to 1A
• Quiescent Current: 35µA (typical)
• Switching Frequency: 2MHz (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MIC2168AYMM has the following pin configuration:

```

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| | --| EN GND |-- Pin 1: Enable (EN) --| FB SW |-- Pin 2: Feedback (FB) --| VIN SW |-- Pin 3: Input Voltage (VIN) --| PGND SW |-- Pin 4: Power Ground (PGND) --| LX SW |-- Pin 5: Switch Node (LX) --| COMP SW |-- Pin 6: Compensation (COMP) --| SS SW |-- Pin 7: Soft-Start (SS) --| VOUT SW |-- Pin 8: Output Voltage (VOUT) |___________| ```

Functional Features

• High efficiency synchronous buck regulator
• Adjustable output voltage through external resistors
• Soft-start function for controlled startup
• Overcurrent protection with hiccup mode
• Thermal shutdown protection
• Power Good (PG) output for fault detection

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power dissipation - Wide input voltage range allows for versatile applications - Compact MSOP package saves board space - Soft-start feature prevents inrush current during startup - Overcurrent and thermal protection ensure device safety

Disadvantages: - Limited output current of up to 1A - Requires external resistors for output voltage adjustment

Working Principles

The MIC2168AYMM is a synchronous buck regulator that converts a higher input voltage into a lower output voltage. It utilizes a high-side N-channel MOSFET and a low-side P-channel MOSFET to achieve high efficiency power conversion. The feedback pin (FB) compares the output voltage with a reference voltage, and the error signal is used to adjust the duty cycle of the internal PWM controller. This regulates the output voltage within the desired range.

Detailed Application Field Plans

The MIC2168AYMM is commonly used in various applications, including but not limited to:

1. Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices benefit from its wide input voltage range and low quiescent current.
2. Industrial automation: Control systems, motor drives, and robotics can utilize the high efficiency and compact size of the MIC2168AYMM.
3. Automotive electronics: Infotainment systems, lighting controls, and advanced driver assistance systems (ADAS) can benefit from its wide input voltage range and thermal protection features.

Detailed and Complete Alternative Models

1. MIC2169: Similar to MIC2168AYMM, but with a higher output current capability of up to 2A.
2. MIC2170: A step-up (boost) regulator with similar characteristics, suitable for applications requiring higher output voltages.

These alternative models provide options for different output current requirements and voltage conversion needs.

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