LP8720TLE-B/NOPB

Overview

The LP8720TLE-B/NOPB is a specialized Power Management IC (PMIC) from the LP8720 series, manufactured by Texas Instruments. It integrates one synchronous step-down DC/DC converter and five low-dropout linear regulators (LDOs). The device operates with an input voltage range of 2.7 V to 4.5 V. The buck converter supports an output current of 400 mA, while the LDOs provide regulated outputs adjustable between 800 mV and 2.3 V. It features an I2C-compatible interface for configuration and monitoring. The component is housed in a 20-pin DSBGA package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a single synchronous step-down DC/DC converter alongside five independent linear regulators for multi-rail power distribution.
• Features an I2C-compatible serial interface allowing digital control and status monitoring of all regulator channels.
• Supports wide operating input voltage ranges suitable for battery-powered and portable electronic applications.

Applications

• Portable consumer electronics requiring multiple voltage rails
• Battery-powered devices needing efficient power management
• Embedded systems utilizing I2C-controlled power sequencing

Procurement Notes

Verify the manufacturer designation carefully, as National Semiconductor was acquired by Texas Instruments; current production is under the TI brand. Confirm the specific suffix 'B' against official datasheets to ensure correct pinout and functional compatibility. Check RoHS compliance documentation for environmental standards. Validate the package type as DSBGA-20 during PCB footprint design. Ensure I2C address configurations match system requirements.

Selection Notes

Select this component when a compact solution is needed for generating multiple voltage levels from a single input source. The integration of both switching and linear regulation allows for optimized efficiency and noise performance. Consider the thermal dissipation capabilities of the DSBGA package relative to the board layout. Verify that the required output voltages fall within the specified adjustable ranges of the integrated regulators.

Part Context

This part belongs to the LP8720 family of PMICs designed for space-constrained applications. It consolidates power management functions typically handled by discrete components into a single chip. The device replaces separate buck converters and LDOs, reducing board area and assembly complexity. It is engineered for high reliability in mobile and handheld device markets.

Replacement Considerations

LP8720TLE/NOPB is a direct equivalent variant within the same series. LP8720TLX/NOPB offers identical electrical specifications but differs in reel packaging quantity. Verify pin-to-pin compatibility before substitution. No other cross-model replacements are confirmed in public documentation.