Ti Bq25070 Battery Power Charger Control Management Integrated Circuit IC Voltage Monitor Protector Electronic Components Chip

• shape: Flat
• Conductive Type: Bipolar Integrated Circuit
• Integration: MSI
• Technics: Semiconductor IC
• Rating: Catalog
• RoHS: Yes
• Reach: Yes
• Lead Finish / Ball Material: Nipdau / Snagcu
• Delivery Time: 1-3 Days
• Transport Package: Small Large T&R
• Specification: 9 mm² 3 x 3
• Trademark: TI
• HS Code: 8542399000
• Production Capacity: 60000

Product Description

Packaging information

Package | PinsWSON (DQC) | 10

Operating temperature range (°C)-40 to 85

Package qty | Carrier250 | SMALL T&R

Features for the BQ25070

• Single Cell LiFePO₄ Charging Algorithm
• 30V Input Rating, With 10.5V Over-Voltage Protection (OVP)
• 50mA Integrated Low Dropout Linear Regulator (LDO)
• Programmable Charge Current Through Single Input Interface (CTRL)
• 7% Charge Current Regulation Accuracy
• Thermal Regulation and Protection
• Soft-Start Feature to Reduce Inrush Current
• Battery NTC Monitoring
• Charging Status Indication
• Available in Small 2mm × 3mm 10 Pin SON Package
• APPLICATIONS
  • Smart Phones
  • Mobile Phones
  • Portable Media Players
  • Low Power Handheld Devices

 

Description for the BQ25070

The bq25070 is a highly integrated LiFePO₄ linear battery charger targeted at space-limited portable applications. It operates from either a USB port or AC Adapter and charges a single-cell LiFePO₄ battery with up to 1A of charge current. The 30V input voltage range with input over-voltage protections supports low-cost unregulated adapters.

The bq25070 has a single power output that charges the battery and powers the system. The charge current is programmable up to 1A using the CTRL input. Additionally, a 4.9V ±10% 50mA LDO is integrated into the IC for supplying low power external circuitry.

The LiFePO₄ charging algorithm removes the constant voltage mode control usually present in Li-Ion battery charge cycles. Instead, the battery is fastcharged to the overcharge voltage and then allowed to relax to a lower float charge voltage threshold. The removal of the constant voltage control reduces charge time significantly. During the charge cycle, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, and charge status display.