L4952D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High voltage, high current, low dropout voltage regulator
• Package: PowerSO-20
• Essence: Voltage regulator with built-in protection features
• Packaging/Quantity: Available in tape and reel packaging, quantity depends on supplier

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 1.2V to 57V
• Maximum Output Current: 1.5A
• Dropout Voltage: 0.45V at 1A
• Quiescent Current: 10mA
• Operating Temperature Range: -40°C to +150°C

Detailed Pin Configuration

The L4952D IC has a total of 20 pins. The pin configuration is as follows:

1. Vout
2. GND
3. Vref
4. Vcc
5. Vfb
6. Iadj
7. Vos
8. N.C.
9. N.C.
10. N.C.
11. N.C.
12. N.C.
13. N.C.
14. N.C.
15. N.C.
16. N.C.
17. N.C.
18. N.C.
19. N.C.
20. Vin

Functional Features

• Built-in thermal shutdown protection
• Overvoltage protection
• Short-circuit protection
• Adjustable output voltage
• Low dropout voltage
• Wide input voltage range

Advantages and Disadvantages

Advantages

• High voltage and current capability
• Excellent line and load regulation
• Robust protection features
• Adjustable output voltage for flexibility
• Suitable for various applications

Disadvantages

• Relatively high quiescent current
• Limited output current compared to some other regulators

Working Principles

The L4952D is a voltage regulator that provides a stable output voltage regardless of input voltage fluctuations. It operates by comparing the feedback voltage (Vfb) with a reference voltage (Vref) and adjusting the output voltage accordingly. The built-in protection features ensure safe operation under various conditions, such as overvoltage, short-circuit, and thermal overload.

Detailed Application Field Plans

The L4952D is commonly used in applications where a stable and regulated power supply is required. Some of the typical application fields include:

1. Automotive electronics
2. Industrial control systems
3. Telecommunications equipment
4. Power distribution systems
5. Battery charging circuits

Detailed and Complete Alternative Models

There are several alternative models available in the market that offer similar functionality to the L4952D. Some popular alternatives include:

1. LM317: Adjustable voltage regulator with high current capability.
2. LT1083: Low dropout voltage regulator with adjustable output voltage.
3. TPS7A47: High voltage, low dropout voltage regulator with integrated protection features.

These alternative models can be considered based on specific requirements and design constraints.

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