LM3432MH/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics: High Efficiency, Wide Input Voltage Range, Adjustable Current Limit, PWM Dimming Control
• Package: PowerPAD HTSSOP-20
• Essence: LM3432MH/NOPB is a high-performance LED driver IC designed to efficiently drive high-power LEDs in various lighting applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 75V
• Output Voltage Range: Up to 60V
• Output Current Range: Up to 3A
• Switching Frequency: Adjustable up to 1MHz
• Operating Temperature Range: -40°C to +125°C
• Protection Features: Overvoltage Protection, Overcurrent Protection, Thermal Shutdown

Pin Configuration

The LM3432MH/NOPB IC has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VCC: Supply voltage pin
4. EN: Enable pin
5. DIM: Dimming control input pin
6. FB: Feedback pin
7. CS: Current sense pin
8. SW: Switch node pin
9. AGND: Analog ground pin
10. PGND: Power ground pin
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection
17. NC: No connection
18. NC: No connection
19. NC: No connection
20. NC: No connection

Functional Features

• High efficiency conversion of input voltage to output current for driving LEDs
• Wide input voltage range allows for versatile applications
• Adjustable current limit to control LED brightness
• PWM dimming control for precise light output adjustment
• Integrated protection features ensure safe operation

Advantages and Disadvantages

Advantages

• High efficiency results in reduced power consumption and heat dissipation.
• Wide input voltage range enables compatibility with various power sources.
• Adjustable current limit allows for flexible LED brightness control.
• PWM dimming control provides accurate and smooth light output adjustment.

Disadvantages

• Limited maximum output current may not be suitable for high-power LED applications.
• Complex pin configuration may require careful PCB layout design.

Working Principles

The LM3432MH/NOPB LED driver IC operates on the principle of a buck converter. It converts the input voltage to a regulated output current suitable for driving LEDs. The IC uses a high-frequency switching circuit to efficiently regulate the current flow through the LEDs. The adjustable current limit and PWM dimming control allow for precise control over the LED brightness.

Application Field Plans

The LM3432MH/NOPB LED driver IC is widely used in various lighting applications, including:

1. Indoor and outdoor LED lighting fixtures
2. Automotive lighting systems
3. Streetlights and area lighting
4. Display backlighting
5. Signage and advertising lighting

Alternative Models

Here are some alternative models that can be considered as alternatives to LM3432MH/NOPB:

1. LT3474: LED driver IC with similar specifications and features.
2. TPS92550: High-power LED driver IC with integrated diagnostics and fault protection.
3. MAX16834: LED driver IC with built-in temperature compensation for stable performance.

These alternative models offer similar functionality and can be used as replacements based on specific application requirements.

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