Datasheet for LTC3544B:
- Manufacturer Part Number : LTC3544B
- Manufacturer : AD
- Description : Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA
- Series : LTC3544B
- Reference Price : USD 2.36
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Step-Down (Buck) Regulators
- 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 : LTC3544B
- 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 LTC3544B. If you need any more information about LTC3544B, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LTC3544B is a quad, high efficiency, monolithic synchronous buck regulator using a constant frequency, current mode architecture. The four regulators operate independently with separate run pins. The 2.25V to 5.5V input voltage range makes the LTC3544B well suited for single Li-Ion/polymer battery-powered applications. 100% duty cycle provides low dropout operation, extending battery runtime in portable systems. At moderate and low output load levels PWM pulse skip mode operation provides very low output ripple voltage for noise sensitive applications.
Switching frequency is internally set to 2.25MHz, allowing the use of small surface mount inductors and capacitors.
The internal synchronous switches increase efficiency and eliminate the need for external Schottky diodes. Low output voltages are easily supported with the 0.8V feedback reference voltage.
The LTC3544B is available in a low profile (0.75mm) (3mm × 3mm) QFN package.
| Light Load Operation | |
| LTC3544 | Burst Mode (20mVpp), < 70uA Iq |
| LTC3544B | Pulse Skip Mode |
Applications
- Cellular Telephones
- Personal Information Appliances
- Wireless and DSL Modems
- Digital Still Cameras
- Media Players
- Portable Instruments
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.
