MC33164LP

Product Overview

• Category: Integrated Circuit
• Use: Voltage Regulator
• Characteristics: Low Dropout, Low Quiescent Current
• Package: DIP-8, SOIC-8
• Essence: Linear Voltage Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 26V
• Output Voltage Range: 1.25V to 20V
• Dropout Voltage: 0.4V (typical)
• Quiescent Current: 120µA (typical)
• Output Current: 100mA
• Line Regulation: 0.04%/V
• Load Regulation: 0.2%/mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MC33164LP has a total of 8 pins:

1. VIN - Input voltage pin
2. GND - Ground pin
3. VOUT - Output voltage pin
4. NC - No connection pin
5. NC - No connection pin
6. NC - No connection pin
7. NC - No connection pin
8. NC - No connection pin

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• Low quiescent current minimizes power consumption in standby or idle modes.
• Internal thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limiting protects the device from overcurrent conditions.

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications.
• Stable output voltage with low ripple and noise.
• Compact package options provide flexibility in design.
• Low quiescent current extends battery life in portable devices.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Dropout voltage may cause a significant power loss in low input-output differential scenarios.

Working Principles

The MC33164LP is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage, adjusting the pass transistor's resistance to maintain a stable output voltage. The dropout voltage is minimized by utilizing a PNP pass transistor and an error amplifier with low input offset voltage.

Detailed Application Field Plans

The MC33164LP is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: Portable audio players, handheld gaming consoles, and remote controls.
2. Automotive electronics: Dashboard displays, infotainment systems, and lighting controls.
3. Industrial equipment: Sensors, actuators, and control systems.
4. Communication devices: Wireless routers, modems, and network switches.
5. Medical devices: Patient monitoring systems, infusion pumps, and diagnostic equipment.

Detailed and Complete Alternative Models

1. LM317: Adjustable Linear Voltage Regulator
2. LT1084: Low Dropout Positive Fixed Voltage Regulator
3. LM1117: Low Dropout Linear Regulator
4. MAX603: Micropower Low Dropout Voltage Reference

These alternative models offer similar functionality and can be considered as substitutes for the MC33164LP in various applications.

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