Datasheet for LT1939EDD#PBF:
- Manufacturer Part Number : LT1939EDD#PBF
- Manufacturer : AD
- Description : Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller IC
- Series : LT1939
- Reference Price : USD 2.44
- Our Price : We have a better price, contact us by email
- Product Type : PMIC & Multifunction
- Function : Multitopology DC/DC
- Current Suggest : Production
- Status : Production
- ROHS Status : ROHS Compliant (Lead Free)
- Package Type : 12-Lead DFN (3mm x 3mm w/ EP)
- Pins : 12
- MFG Package Case : 05-08-1725
- Part Type : OTH
- Standard Packing Type : Tube
- Standard Packing Quantity : 121
- Working Temperature : -40 to 125C
- Other Part Number : LT1939EDD#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 LT1939 is a current mode PWM step-down DC/DC converter with an internal 2.3A switch. The wide input range of 3V to 25V makes the LT1939 suitable for regulating power from a wide variety of sources, including automotive batteries, industrial supplies and unregulated wall adapters.
Resistor-programmable 250kHz to 2.2MHz frequency range and synchronization capability enable optimization between efficiency and external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown provide protection against a shorted output. The soft-start feature controls the ramp rate of the output voltage, eliminating input current surge during start-up, and also provides output tracking.
The LT1939 contains an internal NPN transistor with feedback control which can be configured as a linear regulator or as a linear regulator controller.
The LT1939’s low current shutdown mode (<12μA) enables easy power management in battery-powered systems.
Applications
- Automotive Battery Regulation
- Industrial Control
- Wall Transformer Regulation
- Distributed Power Regulation
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.
