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Manufacturer / Brand: AD
Details: Linear SuperCap Charger with Current-Limited Ideal Diode and V/I Monitor
Series: LTC4425
Quantity Available: Over 25400 pieces

Datasheet for LTC4425:

LTC4425 datasheet
Price for LTC4425
Product Parameters
  • Manufacturer Part Number : LTC4425
  • Manufacturer : AD
  • Description : Linear SuperCap Charger with Current-Limited Ideal Diode and V/I Monitor
  • Series : LTC4425
  • Reference Price : USD 1.8
  • Our Price : We have a better price, contact us by email
  • Product Type : Supercapacitor Chargers
  • Function : -
  • Current Suggest : Recommended for New Designs
  • Status : Production
  • RoHS Status: -
  • Voltage: -
  • Feature: -
  • Package Case: -
  • Temperature Range: -
  • Packing: Reel/Tray/Tube
  • Standard Packing Quantity: -
  • Country of Origin: -
  • Other Part Number : LTC4425
  • Shipping methods : DHL FEDEX UPS TNT
  • Delivery Time : Ship within 1 day.
  • Manufacturer Production time : 6-8 weeks (Normally have stocks)
  • Weight : 0.001KG

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Features and Benefits of LTC4425
Product Detailed Description for LTC4425

The LTC4425 is a constant-current/constant-voltage linear charger designed to charge a 2-cell supercap stack from either a Li-Ion/Polymer battery, a USB port, or a 2.7V to 5.5V current-limited supply. The part operates as an ideal diode with an extremely low 50mΩ on-resistance making it suitable for high peak-power/low average power applications. The LTC4425 charges the output capacitors to an externally programmed output voltage in LDO mode at a constant charge current, or to VIN in normal mode with a smart charge current profile to limit the inrush current until the VIN to VOUT differential is less than 250mV. In addition the LTC4425 can be set to clamp the output voltage to 4.9V or 5.4V.

Charge current (VOUT current limit) is programmed by connecting a resistor between PROG and GND. The voltage on the PROG pin represents the current fl owing from VIN to VOUT for current monitoring. An internal active balancing circuit maintains equal voltages across each supercapacitor and clamps the peak voltage across each cell to a pin-selectable maximum value. The LTC4425 operates at a very low 20μA quiescent current (shutdown current <3μA) and is available in a low profile 12-pin 3mm × 3mm DFN or a 12-lead MSOP package.

Applications

  • High Peak Power Battery/USB Powered Equipment
  • Industrial PDAs
  • Portable Instruments/Monitoring Equipment
  • Power Meters, SuperCap Backup Circuits
  • PC Card/USB Modems
Lifecycle information of LTC4425

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

LTC4425 More photos
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