L78L33ACZ

Product Overview

Category:

The L78L33ACZ is a linear voltage regulator.

Use:

It is used to regulate the output voltage of power supplies.

Characteristics:

Low dropout voltage
Output current up to 100 mA
Internal thermal overload protection
Output voltage of 3.3V

Package:

The L78L33ACZ comes in a TO-92 package.

Essence:

This voltage regulator provides a stable 3.3V output from a higher input voltage.

Packaging/Quantity:

The L78L33ACZ is typically available in reels or tubes with varying quantities.

Specifications

Input Voltage Range: 4.75V to 20V
Output Voltage: 3.3V ±5%
Dropout Voltage: 1.7V (typical) at 100mA
Quiescent Current: 5mA
Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The L78L33ACZ has three pins: 1. Input (Vin) 2. Ground (GND) 3. Output (Vout)

Functional Features

Overcurrent protection
Thermal shutdown
Short-circuit protection

Advantages and Disadvantages

Advantages

Low dropout voltage
Overcurrent and thermal protection
Wide input voltage range

Disadvantages

Limited output current (up to 100mA)
Higher quiescent current compared to some modern regulators

Working Principles

The L78L33ACZ uses a pass transistor to regulate the output voltage. When the input voltage is higher than the desired output voltage, the pass transistor adjusts its resistance to maintain a constant output.

Detailed Application Field Plans

The L78L33ACZ is commonly used in various electronic devices such as: - Battery-powered devices - Sensor modules - Microcontroller systems

Detailed and Complete Alternative Models

Some alternative models to the L78L33ACZ include: - LM1117 - MCP1700 - NCP1117

In conclusion, the L78L33ACZ is a reliable linear voltage regulator suitable for applications requiring a stable 3.3V output with low dropout voltage and built-in protection features.

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技術ソリューションにおける L78L33ACZ 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。

What is the L78L33ACZ voltage regulator used for?
- The L78L33ACZ is a 3.3V voltage regulator commonly used to provide a stable 3.3V output from a higher input voltage source.
What is the maximum input voltage for the L78L33ACZ?
- The maximum input voltage for the L78L33ACZ is typically around 35V, making it suitable for a wide range of applications.
What is the maximum output current of the L78L33ACZ?
- The L78L33ACZ can typically provide a maximum output current of 100mA, making it suitable for low-power applications.
How do I connect the L78L33ACZ in my circuit?
- The L78L33ACZ requires input and output capacitors for stability and proper operation. Connect the input capacitor between the input pin and ground, and the output capacitor between the output pin and ground.
Can the L78L33ACZ handle temperature variations?
- Yes, the L78L33ACZ is designed to operate over a wide temperature range, typically from -40°C to 125°C.
Is the L78L33ACZ suitable for battery-powered applications?
- Yes, the L78L33ACZ's low dropout voltage and low quiescent current make it suitable for battery-powered applications where efficiency is important.
Can I use the L78L33ACZ in a voltage step-down application?
- No, the L78L33ACZ is a fixed 3.3V regulator and cannot be used to step down voltages.
What are the typical applications for the L78L33ACZ?
- The L78L33ACZ is commonly used in microcontroller and digital logic circuits, as well as in various sensor and control applications.
Does the L78L33ACZ require a heat sink?
- In most cases, the L78L33ACZ does not require a heat sink due to its low power dissipation. However, in high ambient temperature or high power dissipation scenarios, a heat sink may be necessary.
Is the L78L33ACZ available in different package types?
- Yes, the L78L33ACZ is available in various package types, including TO-92, TO-220, and DPAK, providing flexibility for different design requirements.