Datasheet for LTC4557:
- Manufacturer Part Number : LTC4557
- Manufacturer : AD
- Description : Dual SIM/Smart Card Power Supply and Interface
- Series : LTC4557
- Reference Price : USD 1.2
- Our Price : We have a better price, contact us by email
- Product Type : SIM Interface
- Function : -
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC4557
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for LTC4557. If you need any more information about LTC4557, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LTC4557 provides power conversion and signal level translation needed for 2.5G and 3G cellular telephones to interface with 1.8V or 3V subscriber identity modules (SIMs). The part meets all requirements for 1.8V and 3V SIMs. The part contains LDO regulators to power 1.8V or 3V SIM cards from a 2.7V to 5.5V input. The output voltages can be set using the two voltage selection pins and up to 50mA of load current can be supplied.
Internal level translators allow controllers operating with supplies as low as 1.2V to interface with 1.8V or 3V smart cards. Battery life is maximized by a low operating current of less than 100µA and a shutdown current of less than 1µA. Board area is minimized by the low profile 3mm x 3mm x 0.75mm leadless QFN package.
Applications
- GSM and 3G Cellular Phones
- Wireless P.O.S. Terminals
- Multiple SAM Card Interface
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
