LTC4425EDD#PBF

LTC4425 - Linear SuperCap Charger with Current-Limited Ideal Diode and V/I Monitor

Rated 5 Rating 5 | reviews | Write a review

Price:: US $1.30~1.70 / piece [Get Latest Price]

Reference price:

Qty (lots)	Price/lot
	US $1.30~1.70

PartNumber:: LTC4425EDD#PBF

Brand:: Linear Technology - Linear | Pack: QFN | D/C: 10+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

Quantity:: piece

Total Price:: US $0

Place Order via Escrow Service

Sold By

Mr. Zhao's store

(China (Mainland))

add to my favourite

100% Positive feedback

Detailed seller ratings

Visit Store

Contact Now

Esrcow Service

Place orders confidently and securely via it

Safe payments
Quick and easy transactions
Free service charges

Learn More >>

Previous Next

Products Upload time: 2012-10-18

From Other Seller

Part Number:LTC4425EDD#PBF
US $1.30 - 1.70
ECA1HHG220

US $2.00 - 10.00 / Piece
(0) Remove
SIL9030CTU

US $2.50 - 5.10 / Piece
(0) Remove
Quantity:

piece

Product Summary

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.

Among them if you have any need quote or problem, please could you tell us.
E-mail: abel.huang911@gamil.com
MSN:abel.huang@hotmail.com

Features

50mΩ Ideal Diode from VIN to VOUT
Smart Charge Current Profile Limits Inrush Current
Internal Cell Balancer (No External Resistors)
Programmable Output Voltage (LDO Mode)
Programmable VIN to VOUT Current Limit
Continuous Monitoring of VIN to VOUT Current via PROG Pin
Low Quiescent Current: 20μA
VIN Power Fail, PGOOD Indicator
2.45V/2.7V Cell Protection Shunts
(4.9V/5.4V SuperCap Max Top-Off Voltage)
3A Peak Current Limit, Thermal Limiting
Tiny Application Circuit, 3mm × 3mm × 0.75mm DFN and 12-Lead MSOP Packages