Texas Instruments TPS62840 | Demoboard TIDA-010053

Description

The TPS62840 is a high efficiency step-down converter with ultra-low operating quiescent current of typically 60 nA. The device contains special circuitry to achieve just 150 nA IQ in 100% mode to further extend battery life near the end of discharge.The device uses DCS-Control to cleanly power radios and operates with a typical switching frequency of 1.8 MHz. In Power-Save Mode the device extends the light load efficiency down to a load current range of 1-µA and below.16 predefined output voltages can be selected by connecting a resistor to pin VSET, making the device flexible for various applications with a minimum amount of external components.The device’s STOP pin immediately eliminates any switching noise in order to take a noise-free measurement in test & measurement systems.The TPS6284x provides an output current of up to 750 mA. With an input voltage of 1.8 V to 6.5 V, the device supports multiple power sources such as 2S to 4S Alkaline, 1S to 2S Li-MnO2 or 1S Li-Ion/Li-SoCl2.

Features

• 60-nA operating quiescent current
• 100% duty-cycle mode with 150-nA IQ
• Input voltage range VIN from 1.8 V to 6.5 V
• Output current up to 750 mA
• RF friendly DCS-Control™
• 80% efficiency at 1 µA IOUT (3.6 VIN to 1.8 VOUT)
• 16 selectable output voltages via VSET pin
• Auto transition PFM/PWM or forced-PWM mode
• Selectable forced PWM and STOP modes
• Output discharge function
• 20-nA shutdown current
• SON-8, WCSP-6 and HVSSOP-8 packages

Typical applications

• NB IoT enabled primary cell powered cellular asset tracking devices, NB IoT enabled primary cell powered sensor modules/tags for asset tracking
• NB IoT enabled primary cell powered Gas meter, Water meter, Heat meter, Cold meter, NB IoT enabled primary cell powered automated meter reading (AMR) electronic modules

More information

• Datasheet
• IC product information