TPS62740DSST Integrated Circuits (ICs)

Series:	DCS-Control™
Packaging:	Tape & Reel (TR)
Part Status:	Active
Applications:	Converter, Bluetooth (BLT)
Voltage - Input:	2.2 V ~ 5.5 V
Number of Outputs:	1
Voltage - Output:	1.8 V ~ 3.3 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	12-WFDFN Exposed Pad
Supplier Device Package:	12-WSON (3x2)

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TPS62740DSST Application Field and Working Principle

Introduction

The TPS62740DSST is a member of the ultra-low quiescent current and low-noise family of voltage regulators designed to support the next generation of mobile platforms. The TPS62740DSST is a high-performance dual-phase synchronous step-down converter that provides a low quiescent current (IQ) of only 1.5 uA at light loads, high efficiency and low output ripple noise. Its SIMPLE SWITCHER® technology enables the device to scale down and regulate the output voltage with only two external components. The TPS62740DSST operates with an input voltage range of 2.5V to 5.5V and is capable of delivering up to 2A of continuous current to the load.

Key Features

The key features of the TPS62740DSST include:

• Ultra-low quiescent current (1.5 uA at light load)
• High-performance dual-phase operation
• 4 MHz switching frequency
• 2.5V – 5.5V input voltage range
• Programmable output voltage
• Ultra-low output ripple noise
• Adjustable output current limit
• 126 mV max reference output voltage accuracy
• Thermal shutdown protection
• Output over-voltage protection

Application Field

The TPS62740DSST is the perfect choice for applications that demand high performance, low quiescent current and low noise, including mobile handsets, portable and wearable devices, tablets, MP4 players, graphic cards, laptop/ Ultrabooks, and other ultra-low power applications.

Working Principle

The TPS62740DSST consists of two independent synchronous step-down converters, each with its own dedicated output channel and load. This enables the device to better manage heavy load applications and reduce input current ripple. The two output channels are referred to as Phase 1 and Phase 2.The TPS62740DSST employs a high-performance current mode controller topology with internal compensation, and operates at a fixed switching frequency of 4 MHz. The input voltage can range from 2.5V to 5.5V and the output voltage can be set by an external resistor-divider. The output voltage accuracy is ±0.0625%, reducing the need for external compensation.The device\'s main features include output over-voltage protection, thermal shutdown protection, current-limit protection, and enable control. The TPS62740DSST allows designers to easily enable and disable the device using a simple enable control signal. This flexibility allows designers to completely shut down the device when it is not in use, thus reducing the power consumption to a minimum. Additionally, the device\'s ultra-low quiescent current (1.5 uA at light load) and high efficiency ensure that power consumption is kept to a minimum at all loads.

Conclusion

The TPS62740DSST owes its outstanding performance to its advanced synchronous step-down converter architecture and SIMPLE SWITCHER® technology. Its ultra-low quiescent current, high efficiency, low output ripple noise, and versatile enable control make it ideal for mobile and ultra-low power applications. The TPS62740DSST is the perfect choice for power-sensitive applications that demand high performance and low power consumption.

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