Datasheet for LTC3544EUD#PBF:
- Manufacturer Part Number : LTC3544EUD#PBF
- Manufacturer : AD
- Description : Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA IC
- Series : LTC3544
- 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 : ROHS Compliant (Lead Free)
- Package Type : 16-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
- Pins : 16
- MFG Package Case : 05-08-1691
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 121
- Working Temperature : -40 to 125C
- Other Part Number : LTC3544EUD#PBF
- 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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The LTC3544 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 LTC3544 well suited for single Li-Ion/polymer battery-powered applications. 100% duty cycle provides low dropout operation, extending battery runtime in portable systems. Low ripple Burst Mode® operation increases efficiency at light loads, further extending battery runtime with typically only 20mV of ripple.
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 LTC3544 is available in a low profile (0.75mm) (3mm × 3mm) QFN package.
| Light Load Operation | |
| LTC3544 | Burst Mode (20mVP-P), <70µa 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.
