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TPS610981DSER

TITPS610981DSER

Texas Instruments
PMIC - Voltage Regulators - Linear Switching 2 Output Step-Up (Boost) Synchronous (1), Linear (LDO) (1) 6-WSON (1.5x1.5)
NRND18 in stock

Overview

The TPS610981DSER is an ultra-low power synchronous boost converter with an integrated LDO, designed for applications powered by single-cell alkaline, NiCd, NiMH, or Li-ion batteries. It features an exceptionally low quiescent current of 300nA in Low Power Mode, allowing it to maintain high efficiency even under light load conditions. The device provides a dual-output solution that combines a regulated boost rail with a secondary LDO or load switch to simplify power sequencing.

Why Choose This Part

This PMIC stands out due to its ultra-low 300nA quiescent current and 88 percent efficiency at 10uA loads. Its 1.5mm x 1.5mm WSON package saves significant board space by integrating both a boost converter and an LDO into a single footprint. The automatic pass-through mode ensures the system remains powered even if the battery voltage exceeds the boost output target.

Applications

Wearable Electronics
Ideal for fitness trackers and smartwatches where standby power consumption is critical for battery life.
Wireless Sensor Nodes
Powers IoT sensors that spend most of their time in sleep mode but require a stable 3V to 3.3V rail for bursts of activity.
Battery-Powered Medical Devices
Suitable for portable glucose meters and pulse oximeters that operate from a single primary cell.
Energy Harvesting
Manages power from low-voltage sources like small solar cells or thermal generators due to its 0.7V startup capability.

Key Specifications

Topology Step-Up (Boost) Synchronous (1), Linear (LDO) (1)
w/Sequencer No
w/LED Driver No
w/Supervisor No
Mounting Type Surface Mount
Package / Case 6-WFDFN
Voltage - Supply 0.7V ~ 4.5V
Number of Outputs 2
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 6-WSON (1.5x1.5)
Voltage/Current - Output 1 3.3V, 350mA
Voltage/Current - Output 2 3V, 200mA

Getting Started

Engineers can evaluate this part using the TPS610981EVM-674 evaluation module to measure efficiency and quiescent current across different load profiles. When designing the PCB, place the input and output capacitors as close as possible to the DSE package pins to minimize parasitic inductance. Use a low-ESR ceramic capacitor for the boost output to ensure stability and low ripple.

Also Consider

MAX17222 Maxim Integrated - Offers a lower minimum startup voltage of 0.4V for applications using deeply discharged batteries or single-cell solar.
MCP1640 MCHPMicrochip - A common alternative for single-cell boost applications requiring higher output currents up to 350mA.
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