TPS61089RNRT

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Introduction

The TPS61089RNRT is a voltage regulator from Texas Instruments that belongs to its PMIC (Power Management IC) family and is classified as DC DC Switching Regulators Voltage Regulators. It is offered in the WSON-10L packaging, and is capable of withstanding maximum voltage of 20 V, can provide up to 1.5 A current and have a max. frequency of up to 1 MHz.

Applications

The core application of TPS61089RNRT is regulating voltage from fixed voltage supplies, as well as battery-powered systems. It can be used in many different circuits where space and power efficiency is important, and could be found in cellular phones, portable audio players, handheld PCs, and so on.

Features

• 40-V Input Supply Voltage
• Thermal Protection
• Input Undervoltage Lockout
• Wide Input Voltage Range: 0.25 V to VIN
• High Efficiency Synchronous Buck DC/DC Converter
• Reverse Current Protection
• Voltage Monitoring with Output Disable
• Programmable Soft-Start
• 1.5-A Output Current
• Active Output Discharge

Working Principle

TPS61089RNRT works on the concept of input voltage shaping by implementing a DC/DC buck converter in a synchronous manner to regulate output. It boasts of high efficiency over the whole input voltage range and temperature, and comes with a programmable soft-start feature that provides overcurrent protection during startup.

In its standard operation, the TPS61089RNRT works within a 0.25 V to 1.5 V output voltage range. The device has a pulse-width modulation (PWM) controlling circuit with visible compensation capacitor, and an on-chip frequency compensation network to optimize the transient response. Additionally, it comes with a BuckBoost converter that helps convert the supply voltage to any range between VIN and VOUT.

The built-in control IC, which makes device responding very fast, is located right next to the MOSFETs, which improves the loop stability and reduces noise emission.

Summary

The TPS61089RNRT from Texas Instrument caters the needs of the market by providing a compact, highly reliable and efficient buck regulator solution. It is perfectly suited for battery-powered and fixed voltage applications and its buckboost converter feature makes it a versatile choice. Moreover, it boasts of a variety of protection features, such as thermal protection, reverse current protection, etc., to ensure that the device works safely and effectively.

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