SLUSBY7 July   2014

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (Continued)
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 Handling Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Dynamic Power Path Management
      2. 8.3.2 Production Test Mode
      3. 8.3.3 AnyBoot Battery Detection
    4. 8.4 Device Functional Modes
      1. 8.4.1  Charge Profile
      2. 8.4.2  EN1/EN2 Pins
      3. 8.4.3  I2C Operation (Host Mode / Default Mode)
      4. 8.4.4  External Settings: ISET, ILIM and VIN_DPM
      5. 8.4.5  Transient Response
      6. 8.4.6  Input Voltage Based DPM
      7. 8.4.7  Sleep Mode
      8. 8.4.8  Input Over-Voltage Protection
      9. 8.4.9  NTC Monitor
      10. 8.4.10 Safety Timer
      11. 8.4.11 Watchdog Timer
      12. 8.4.12 Thermal Regulation and Thermal Shutdown
      13. 8.4.13 Fault Modes
      14. 8.4.14 Serial Interface Description
        1. 8.4.14.1 F/S Mode Protocol
    5. 8.5 Register Maps
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Inductor Selection
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Board Layout
    3. 11.3 Package Summary
  12. 12Device and Documentation Support
    1. 12.1 Trademarks
    2. 12.2 Electrostatic Discharge Caution
    3. 12.3 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • High-efficiency Switch-mode Charger with Separate Power Path
  • Start up System from Deeply Discharged or Missing Battery
  • USB Charging Compliant
    • Selectable Input Current Limit of 100 mA,
      500 mA, 900 mA, 1.5 A, and 2 A
  • In Host Mode (After I2C Communication Starts and Before Watchdog Timer Times Out)
    • Programmable Battery Charge Voltage, VBATREG
    • Programmable Charge Current (ICHG)
    • Programmable Input Current Limit (ILIM)
    • Programmable Input Voltage Based Dynamic Power Management threshold, (VIN_DPM)
    • Programmable Input Overvoltage Protection Threshold (VOVP)
    • Programmable Safety Timer
  • Resistor Programmable Defaults for:
    • ICHG up to 2 A with Current Monitoring Output (ISET)
    • ILIM up to 2 A with Current Monitoring Output (ILIM)
    • VIN_DPM (VDPM)
  • Watchdog Timer Disable Bit
  • Integrated 4.9 V, 50 mA LDO
  • Complete System Level Protection
    • Input UVLO, Input Over-voltage Protection (OVP), Battery OVP, Sleep Mode, VIN_DPM
    • Input Current Limit
    • Charge Current Limit
    • Thermal Regulation
    • Thermal Shutdown
    • Voltage Based NTC Monitoring Input
    • Safety Timer
  • 20 V Maximum Input Voltage Rating
  • 10.5 V Maximum Operating Input Voltage
  • Low RDS(on) Integrated Power FETs for up to 2 A Charging Rate
  • Open Drain Status Outputs
  • Synchronous Fixed-frequency PWM Controller Operating at 3MHz for Small Inductor Support
  • AnyBoot Robust Battery Detection Algorithm
  • Charge Time Optimizer for improved charge times at any given charge current
  • 2.4 x 2.0 mm 30-ball WCSP Packages

2 Applications

  • Smart Phones
  • MP3 Players
  • Portable Media Players
  • Handheld Devices

3 Description

The bq24250C is a highly integrated single-cell Li-Ion battery charger and system power-path management device targeted for space-limited, portable applications with high capacity batteries. The single cell charger has a single input that operates from either a USB port or AC wall adapter for a versatile solution.

Device Information

PART NUMBER PACKAGE BODY SIZE
bq24250C DSBGA (30) 2.427 mm × 2.027 mm

Typical Application

Feat_App2_LUSBA1A.gif

4 Revision History

DATE REVISION NOTES
July 2014 * Initial Release