Datasheet for DC519A:
- Manufacturer Part Number : DC519A
- Manufacturer : AD
- Description : Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller IC
- Series : LT1939
- Reference Price : USD 0
- 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 : LT1940EFE | Dual Output Buck, 2 Circuits, 4.8V = VIN1 = 14V, Vout1= 3.3V & 1.8V @ 1A; 6.8V = VIN2 = 25V, Vout2 = 5V & 3.3V @ 1.4A
- Pins : -
- MFG Package Case : -
- Part Type : EVAL
- Standard Packing Type : -
- Standard Packing Quantity : -
- Working Temperature : -
- Other Part Number : DC519A
- 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.
