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1-cell, 1-A, Li-ion linear battery charger with 50mA LDO

US ECCN: EAR99 US/Local Export Classification Number

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-2-260C-1 YEAR
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
WSON (DQC) | 10 250 | SMALL T&R -40 to 85
Package | Pins WSON (DQC) | 10
Package qty | Carrier: 250 | SMALL T&R
Operating temperature range (°C) -40 to 85
View TI packaging information

Features for the BQ25071

  • Single Cell LiFePO4 Charging Algorithm
  • 30V Input Rating, With 10.5 V Overvoltage
    Protection (OVP)
  • 50mA Integrated Low Dropout Linear
    Regulator (LDO)
  • Programmable Charge Current Through
    ISET and EN Terminals
  • 7% Charge Current Regulation Accuracy
  • Thermal Regulation and Protection
  • Soft-Start Feature to Reduce Inrush Current
  • Battery NTC Monitoring
  • Charging Status Indication

Description for the BQ25071

The bq25071 is a highly integrated, linear, LiFePO4 battery charger targeted at space-limited portable applications. It accepts power from either a USB port or AC adapter and charges a single-cell LiFePO4 battery with up to 1 A of charge current. The 30 V input rating with 10.5 V input overvoltage protection supports low-cost unregulated adapters.

The bq25071 has a single power output that simultaneously charges the battery and powers the system. The input current is programmable from 100 mA up to 1 A using the ISET input or configurable for USB500. There is also a 4.9 V ±10% 50 mA LDO integrated into the IC for supplying low power external circuitry.

The LiFePO4 charging algorithm removes the current taper typically seen as part of the constant voltage mode control used in Li-Ion battery charge cycles which reduces charge time significantly. Instead, the battery is fast charged to the overcharge voltage and then allowed to relax to a lower float charge voltage threshold. The charger integrates the power stage with the charge current and voltage sense to achieve a high level of accuracy in the current and voltage regulation loops. An internal control loop monitors the IC junction temperature through the charge cycle and reduces the charge current if an internal temperature threshold is exceeded.


Qty Price (USD)
1-99 1.49
100-249 1.23
250-999 0.884
1,000+ 0.665

Additional package qty | carrier options

Package qty | Carrier 3,000 | LARGE T&R
Qty | Price (USD) 1ku | 0.578 1-99 1.295 100-249 1.069 250-999 0.768 1,000+ 0.578