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Cell-phone Application

System View | Block Diagram
Protection Area Illustration (click to open larger image in new window)
  1. Antenna
  2. Battery
  3. Battery Connector
  4. DC Power Port
  5. Earphone / Microphone
  6. Frontend IC
  7. I/O Ports
  8. Keyboard Connector
  9. Keypad Buttons
  10. Mini USB 2.0 Port
  11. RX/TX Switch IC
  12. SIM Card Connect

Battery Protection

Problem: Overcurrent / Overtemperature

An overcurrent / overtemperature event may occur in a battery cell due to short circuit, abusive charging or charger failure.

 

Solution: PolySwitch axial-leaded device

PolySwitch axial-leaded devices help protect against overcurrent or overtemperature faults.

 

Read more about Raychem PolySwitch axial-leaded devices

Applicable Product Series: VLR, VLP, VTP, LTP, SRP, LR4.
Download Strap Datasheet - (pdf 304KB)
Agency Recognition: UL E74889, CSA 78165C, TÜV

 

Circuit Diagram / Schematic
 

Application Notes:

• Lithium Battery Pack Protection - (pdf 56KB)
• Rechargeable Battery Pack Protection - (pdf 73KB)

Related Technical Information:
• Fundamentals of PolySwitch Overcurrent and Overtemperature Devices In-Depth - (pdf 169KB)
• Selection Guide for PolySwitch Devices and Technology Summary - (pdf 1,550KB)
 

Competitor Cross-reference

Cross-reference competitor products

Microphone / Earphone I/O Ports (mini) USB 2.0 Port SIM Card Connect RX/TX Switch IC SIM Card Connect RX/TX Switch IC (mini) USB 2.0 Port AC/DC Power Adapter (wall-wart) AC/DC Power Adapter (wall-wart) Microphone / Earphone Microphone / Earphone Keyboard Buttons Keyboard Connector Keyboard Connector I/O Ports Frontend IC Frontend IC Battery Connector Battery Battery Antenna Antenna DC Power Port DC Power Port Keyboard Buttons I/O Ports (mini) USB 2.0 Port SIM Card Connect RX/TX Switch IC AC/DC Power Adapter (wall-wart) Microphone / Earphone Keypad Buttons Keyboard Connector I/O Ports Frontend IC Battery Connector Battery Antenna DC Power Port