Technical Specifications
Parameters and characteristics for this part
| Specification | L4976D |
|---|---|
| Current - Output | 1 A |
| Frequency - Switching [Max] | 300 kHz |
| Frequency - Switching [Min] | 100 kHz |
| Function | Step-Down |
| Mounting Type | Surface Mount |
| Number of Outputs | 1 |
| Operating Temperature [Max] | 150 °C |
| Operating Temperature [Min] | -40 °C |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.295 in |
| Package / Case [y] | 7.5 mm |
| Supplier Device Package | 16-SO W |
| Synchronous Rectifier | False |
| Topology | Buck |
| Voltage - Input (Min) [Min] | 8 V |
| Voltage - Output (Max) [Max] | 50 V |
| Voltage - Output (Min/Fixed) [Min] | 0.5 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 5.58 | |
| 10 | $ 5.01 | |||
| 49 | $ 4.74 | |||
| 147 | $ 4.11 | |||
| 294 | $ 3.90 | |||
| 539 | $ 3.50 | |||
| 1029 | $ 2.95 | |||
| 2548 | $ 2.80 | |||
Description
General part information
L4976 Series
The L4976 is a step down monolithic power switching regulator delivering 1A at a voltage between 3.3V and 50V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rds(ON)of 0.25W) to obtain very high efficency and high switching speed. A switching frequency up to 300KHz is achievable (the maximum power dissipation of the packages must be observed). A wide input voltage range between 8V to 55V and output voltages regulated from 3.3V to 40V cover the majority of today’s applications. Features of this new generations of DC-DC converter include pulse-by-pulse current limit, hiccup mode for short circuit protection, voltage feedforward regulation, protection against feedback loop disconnection and thermal shutdown. The device is available in plastic dual in line, DIP8 for standard assembly, and SO16W for SMD assembly.