LP8552TLE-E04/NOPB

LED Driver IC Overview

The LP8552TLE-E04/NOPB is a high-efficiency LED backlight driver IC from Texas Instruments, designed for notebook applications. It integrates a high-voltage DC/DC boost converter with an internal FET and six adjustable current sinks. The device supports input voltages from 2.7 V to 22 V and operates within a temperature range of -40°C to +85°C. It features four selectable switching frequencies: 156 kHz, 312 kHz, 625 kHz, and 1250 kHz. Control is achieved via I2C interface and PWM dimming inputs. The component is housed in a 25-pin DSBGA package.

LED Driver IC Feature Summary

• Integrates a high-voltage DC/DC boost converter with an internal power FET
• Provides six individually adjustable current sink channels for LED strings
• Supports digital control through I2C interface and analog PWM dimming
• Offers four selectable switching frequency options for EMI optimization

LED Driver IC Applications

• Notebook LCD backlight systems
• Portable display backlighting
• High-efficiency LED lighting drivers

LED Driver IC Procurement Notes

Verify the specific suffix E04 against the manufacturer's latest datasheet to confirm pinout and feature configuration, as suffixes often denote specific hardware revisions or factory codes. Ensure the ordering part number matches the required packaging type, such as tape and reel, and confirm RoHS compliance status directly with the supplier documentation prior to procurement.

LED Driver IC Selection Notes

Select this component when designing notebook displays requiring high efficiency and integrated power management. The choice depends on the need for six independent current channels and flexible switching frequency options to meet electromagnetic interference standards. Consider the 2.7 V to 22 V input range compatibility with system battery architectures and the requirement for precise I2C-controlled brightness regulation.

LED Driver IC Part Context

This part belongs to the LP8552 series of high-efficiency LED backlight drivers. It is specifically engineered for portable computing devices like notebooks, where space constraints and power efficiency are critical. The series utilizes a compact DSBGA package to minimize board footprint while delivering robust performance for driving multiple LED strings in series-parallel configurations.

LED Driver IC Replacement Considerations

Check for LP8552 variants with different suffixes (e.g., TLE, TLX) which may share functional similarities but differ in packaging or specific factory configurations. Verify that any substitute maintains the same 25-pin DSBGA footprint and electrical characteristics, including the six-channel output capability and compatible control interfaces.

LED Driver IC FAQ

What switching frequencies are available for the LP8552TLE-E04/NOPB?

The device offers four selectable switching frequencies: 156 kHz, 312 kHz, 625 kHz, and 1250 kHz.

How many LED current sinks does this driver provide?

The LP8552TLE-E04/NOPB includes six adjustable current sink channels for driving LED strings.

What control interfaces are supported by this IC?

The component supports digital control via an I2C interface and allows for brightness adjustment using a PWM input signal.