LP5522TM/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: LED Driver
• Characteristics: Programmable, Multi-channel, Low Power Consumption
• Package: 20-Pin Thin Shrink Small Outline Package (TSSOP)
• Essence: Control and drive multiple LEDs with programmable features
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Number of Channels: 3 independent channels
• LED Current Range: 0 to 30 mA per channel
• Supply Voltage Range: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Interface: I2C-compatible serial interface
• Programmability: Each channel can be individually programmed
• Dimming Control: Support for PWM dimming control
• Fault Detection: Over-temperature and over-voltage protection

Pin Configuration

The LP5522TM/NOPB IC has a total of 20 pins. The pin configuration is as follows:

1. VDD: Supply voltage
2. GND: Ground
3. SDA: Serial data input/output for I2C communication
4. SCL: Serial clock input for I2C communication
5. INT: Interrupt output
6. EN: Enable input
7. REXT: External resistor for setting the LED current
8. NC: No connection
9. OUT1: Channel 1 output
10. OUT2: Channel 2 output
11. OUT3: Channel 3 output
12. GPOUT: General-purpose output
13. GND: Ground
14. GND: Ground
15. GND: Ground
16. GND: Ground
17. GND: Ground
18. GND: Ground
19. GND: Ground
20. VDD: Supply voltage

Functional Features

• Independent control of each LED channel
• Programmable LED current and dimming control
• Support for PWM dimming control
• Over-temperature and over-voltage protection
• Low power consumption
• I2C-compatible serial interface for easy integration

Advantages and Disadvantages

Advantages: - Flexibility in controlling multiple LEDs independently - Programmability allows customization for different applications - Low power consumption helps in energy-efficient designs - Over-temperature and over-voltage protection ensures reliability

Disadvantages: - Limited number of channels (3 channels) - Requires external resistor for setting LED current

Working Principles

The LP5522TM/NOPB is a programmable LED driver IC that controls and drives multiple LEDs. It operates on a supply voltage range of 2.7V to 5.5V. The IC features three independent channels, each capable of driving an LED with a current range of 0 to 30 mA.

The LED current can be programmed using an external resistor connected to the REXT pin. The IC supports PWM dimming control, allowing precise control of LED brightness. It also includes over-temperature and over-voltage protection mechanisms to ensure safe operation.

The LP5522TM/NOPB communicates with a microcontroller or other devices through an I2C-compatible serial interface. This interface enables easy integration into various systems and provides flexibility in programming and controlling the LED channels.

Detailed Application Field Plans

The LP5522TM/NOPB LED driver IC finds applications in various fields, including:

1. Automotive Lighting: Used in automotive interior and exterior lighting systems, such as dashboard backlighting, indicator lights, and accent lighting.
2. Portable Electronics: Integrated into smartphones, tablets, and wearable devices for controlling LED indicators, notification lights, and display backlighting.
3. Industrial Automation: Employed in control panels, machinery, and equipment for status indication, fault detection, and visual feedback.
4. Gaming and Entertainment: Integrated into gaming consoles, gaming peripherals, and entertainment systems for LED-based effects, lighting, and user interface enhancements.

Detailed and Complete Alternative Models

1. LP5521TM/NOPB: Similar to LP5522TM/NOPB but with 2 independent channels instead of 3.
2. LP5523TM/NOPB: Expanded version with 4 independent channels for driving additional LEDs.
3. LP55231TM/NOPB: Advanced model with integrated charge pump for driving high-power LEDs.

These alternative models provide options based on the number of channels required and additional features for specific applications.

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