AiT Semiconductor, a leading fabless IC design company ISO9001/ISO14001 registered, devoted to the design and marketing of analog & mixed-signal integrated circuits, has introduced the A7801B, a buck(step-down) DC-DC converter that operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode. A7431A provides up to 3A output current at 230kHz switching frequency.
A7431A eliminates the expensive, high-accuracy current sense resistor, making it ideal for battery charging applications and adaptors with accurate current limits. The A7431A achieves higher efficiency than traditional constant current switching regulators by eliminating its associated power loss on the additional current sensing resistor. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuits. A7431A is available in a PSOP8 package and requires very few external devices for operation.
Key features
- 42 V Input Voltage Surge
- 36 V Steady State Operation
- Up to 3 A Output Current
- Output Voltage up to 12 V
- 230 kHz Switching Frequency
- Up to 91% Efficiency
- Stable with Low-ESR Ceramic Capacitors to allow Low-Profile Designs
- 230 kHz Switching Frequency Eases EMI Design
- Constant Current Control Without Additional Current Sensing Resistor Improves Efficiency and Lowers Cost.
- Resistor Programmable Current Limit from 1.5 A to 3.5 A
- Up to 0.5 V Excellent Cable Voltage Drop Compensation
- ±7.5% CC Accuracy
- 2% Feedback Voltage Accuracy
- Advanced Feature Set, Integrated Soft Start, Thermal Shutdown, and Cycle-by-Cycle Current Limit
- Available in PSOP8 Package
Key applications
- Car Charger/ Adaptor
- Rechargeable Portable Devices
- General-Purpose CC/CV Supply
Click here to learn more about A7431AMP8VR
