TPS63900

ACTIVE

1.8-V to 5.5-V, 75-nA IQ buck-boost converter with input current limit and Dynamic Voltage Scaling

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck-Boost Type Converter Vin (min) (V) 1.8 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 0.004 Switching frequency (max) (kHz) 2000 Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Light Load Efficiency, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Vout (min) (V) 1.8 Vout (max) (V) 5 Iq (typ) (µA) 0.075 Duty cycle (max) (%) 99 Switch current limit (typ) (A) 1.45
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck-Boost Type Converter Vin (min) (V) 1.8 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 0.004 Switching frequency (max) (kHz) 2000 Features Adjustable current limit, Dynamic Voltage Scaling, Enable, Light Load Efficiency, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed Vout (min) (V) 1.8 Vout (max) (V) 5 Iq (typ) (µA) 0.075 Duty cycle (max) (%) 99 Switch current limit (typ) (A) 1.45
WSON (DSK) 10 6.25 mm² 2.5 x 2.5
  • Input voltage range: 1.8 V to 5.5 V
  • Output voltage range: 1.8 V to 5 V (100-mV steps)
    • Programmable with external resistors
    • SEL pin to toggle between two output voltage presets
  • > 400-mA output current for VI ≥ 2.0 V, VO = 3.3 V (typical 1.45-A peak switching current limit)
    • Stackable: parallel multiple devices for higher output current
  • > 90% Efficiency at 10-µA load current
    • 75-nA quiescent current
    • 60-nA shutdown current
  • Single-mode operation
    • Eliminates mode transitions between buck, buck-boost and boost operation
    • Low output ripple
    • Excellent transient performance
  • Safety and robust operation features
    • Integrated soft start
    • Programmable input current limit with eight settings (1 mA to 100 mA and unlimited)
    • Output short-circuit and overtemperature protection
  • Tiny solution size of 21-mm2
    • Small 2.2-µH inductor, single 22-µF output capacitor
    • 10-Pin, 2.5-mm × 2.5-mm, 0.5-mm pitch WSON package
  • Input voltage range: 1.8 V to 5.5 V
  • Output voltage range: 1.8 V to 5 V (100-mV steps)
    • Programmable with external resistors
    • SEL pin to toggle between two output voltage presets
  • > 400-mA output current for VI ≥ 2.0 V, VO = 3.3 V (typical 1.45-A peak switching current limit)
    • Stackable: parallel multiple devices for higher output current
  • > 90% Efficiency at 10-µA load current
    • 75-nA quiescent current
    • 60-nA shutdown current
  • Single-mode operation
    • Eliminates mode transitions between buck, buck-boost and boost operation
    • Low output ripple
    • Excellent transient performance
  • Safety and robust operation features
    • Integrated soft start
    • Programmable input current limit with eight settings (1 mA to 100 mA and unlimited)
    • Output short-circuit and overtemperature protection
  • Tiny solution size of 21-mm2
    • Small 2.2-µH inductor, single 22-µF output capacitor
    • 10-Pin, 2.5-mm × 2.5-mm, 0.5-mm pitch WSON package

The TPS63900 device is a high-efficiency synchronous buck-boost converter with an extremely low quiescent current (75 nA typical). The device has 32 user-programmable output voltage settings from 1.8 V to 5 V.

A dynamic voltage-scaling feature lets applications switch between two output voltages during operation; for example, to save power by using a lower system supply voltage during standby operation.

With its wide supply voltage range and programmable input current limit (1 mA to 100 mA and unlimited), the device is ideal for use with a wide range of primary like 3S Alkaline, 1S Li-MnO2 or 1S Li-SOCl2, and secondary battery types.

The high-output current capability supports commonly-used RF standards like sub-1-GHz, BLE, LoRa, wM-Bus, and NB-IoT.

The TPS63900 device is a high-efficiency synchronous buck-boost converter with an extremely low quiescent current (75 nA typical). The device has 32 user-programmable output voltage settings from 1.8 V to 5 V.

A dynamic voltage-scaling feature lets applications switch between two output voltages during operation; for example, to save power by using a lower system supply voltage during standby operation.

With its wide supply voltage range and programmable input current limit (1 mA to 100 mA and unlimited), the device is ideal for use with a wide range of primary like 3S Alkaline, 1S Li-MnO2 or 1S Li-SOCl2, and secondary battery types.

The high-output current capability supports commonly-used RF standards like sub-1-GHz, BLE, LoRa, wM-Bus, and NB-IoT.

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Technical documentation

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Type Title Date
* Data sheet TPS63900 1.8-V to 5.5-V, 75-nA IQ Buck-boost Converter with Input Current Limit and DVS datasheet (Rev. D) PDF | HTML 20 Oct 2020
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
White paper 克服低功耗應用中的低 IQ 挑戰 (Rev. B) PDF | HTML 19 Apr 2023
White paper 저전력 애플리케이션의 저 IQ 문제점 극복 (Rev. B) PDF | HTML 19 Apr 2023
White paper Overcoming Low-IQ Challenges in Low-Power Applications (Rev. B) PDF | HTML 12 Apr 2023
Certificate TPS63900EVM EU Declaration of Conformity (DoC) (Rev. A) 15 Mar 2022
Application note Layer Design for Reducing Radiated EMI of DC to DC Buck-Boost Converters (Rev. A) PDF | HTML 09 Jun 2021
Application brief 75-nA IQ Buck-Boost Converter in Parallel for Increased Output Current (≥ 2 A) 14 Oct 2020
Application note Extending Battery Life with Low-Iq and Dynamic Voltage Scaling (Rev. A) PDF | HTML 12 Oct 2020
EVM User's guide TPS63900 Evaluation Module User's Guide (Rev. A) PDF | HTML 15 Sep 2020
Technical article 5 best practices to extend battery life in flow meters PDF | HTML 28 Aug 2020
Application brief How to Extend Operating Time of a LiSOCl2 Powered System PDF | HTML 06 Aug 2020
Application brief How to Implement Multi-Level Dynamic Voltage Scaling With TPS63900 PDF | HTML 06 Aug 2020
Application brief Using Input Current Limiting to Extend Battery Life 28 Apr 2020

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