Datasheet for LTC3803-3:
- Manufacturer Part Number : LTC3803-3
- Manufacturer : AD
- Description : Constant Frequency Current Mode Flyback DC/DC Controller in ThinSOT
- Series : LTC3803-3
- Reference Price : USD 0.936
- Our Price : We have a better price, contact us by email
- Product Type : Switching Regulators
- Function : Flyback, Forward and Isolated Controllers
- 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 : LTC3803-3
- 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 LTC3803-3. If you need any more information about LTC3803-3, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
The LTC3803-3 is a constant frequency current mode flyback controller optimized for driving N-channel MOSFETs in high input voltage applications. Constant frequency operation is maintained down to very light loads, resulting in less low frequency noise generation over a wide range of load currents. Slope compensation can be programmed with an external resistor.
The LTC3803-3 provides ±1.5% output voltage accuracy and consumes only 240μA of quiescent current. Ground referenced current sensing allows LTC3803-3-based converters to accept input supplies beyond the LTC3803-3’s absolute maximum VCC. A micropower hysteretic start-up feature allows efficient operation at high input voltages. For simplicity, the LTC3803-3 can also be powered from a high VIN through a resistor, due to its internal shunt regulator. An internal undervoltage lockout shuts down the LTC3803-3 when the input voltage is too low to provide sufficient gate drive to the external MOSFET.
The LTC3803-3 is available in a low profile (1mm) 6-lead SOT-23 (ThinSOT™) package.
| Turn On Voltage | Frequency | |
| LTC3803 | 8.7V | 200kHz |
| LTC3803-3 | 8.7V | 300kHz |
| LTC3803-5 | 4.8V | 200kHz |
Applications
- Telecom Power Supplies
- 42V and 12V Automotive Power Supplies
- Auxiliary/Housekeeping Power Supplies
- Power over Ethernet Powered Devices
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.
