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TPS63900DSKR

TITPS63900DSKR

Texas Instruments
Buck-Boost Switching Regulator IC Positive Programmable 1.8V 1 Output 400mA 10-WFDFN Exposed Pad
Active29,575 in stock
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Overview

The TPS63900DSKR is a high-efficiency synchronous buck-boost converter designed for low-power applications requiring stable output voltages from varying battery levels. It features an industry-leading ultra-low quiescent current of 75 nA and supports output currents up to 400mA. The device includes a unique programmable input current limit to protect weak batteries and minimize voltage drops during peak loads.

Why Choose This Part

The TPS63900DSKR stands out due to its extremely low 75nA quiescent current, which is critical for extending the life of primary batteries. Its integrated dynamic voltage scaling (DVS) allows the system to lower the output voltage during sleep modes for further power savings, and the programmable input current limit prevents battery brownouts.

Applications

NB-IoT and LoRa Modules
Supplies stable power to wireless modules from primary batteries like Li-SOCl2, handling high peak transmission currents while maintaining 75nA idle power.
Energy Harvesting Systems
Manages erratic power sources to provide a regulated output for low-duty-cycle sensors and microcontrollers.
Wearable Electronics
Provides a compact power solution for fitness trackers and health monitors requiring high efficiency at light loads to extend battery life.
Smart Metering
Optimized for long-life industrial sensors where the battery must last 10+ years without maintenance.

Key Specifications

Function Step-Up/Step-Down
Topology Buck-Boost
Output Type Programmable
Mounting Type Surface Mount
Package / Case 10-WFDFN Exposed Pad
Current - Output 400mA
Number of Outputs 1
Output Configuration Positive
Operating Temperature -40degC ~ 125degC (TJ)
Synchronous Rectifier Yes
Voltage - Input (Max) 5.5V
Voltage - Input (Min) 1.8V
Voltage - Output (Max) 5V
Supplier Device Package 10-SON (2.5x2.5)
Voltage - Output (Min/Fixed) 1.8V

Getting Started

Engineers should utilize the TPS63900EVM evaluation module to test performance across different input and output conditions. Configuration is handled through the SEL pins to set the output voltage, and the CFG pin allows for input current limit adjustments. Ensure the use of low-ESR ceramic capacitors close to the VOUT and VIN pins for optimal stability and ripple performance.

Also Consider

ADP5091 Analog Devices - Specialized energy harvesting PMIC that includes integrated power point tracking for solar or thermal sources.

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