The L4970A is a step-down monolithic power switching regulator delivering 10A at a voltage variable from 5.1 to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. Features of the L4970A include reset and power fail for mi- croprocessors, feed forward line regulation, soft start, limiting current and thermal protection.
The L4970A is a step-down monolithic power switching regulator delivering 10A at a voltage variable from 5.1 to 40V. Realized with BCD mixed technology, the device uses a DMOS output transistor to obtain very high efficiency and very fast switching times. It features reset and power fail for microprocessors, feed forward line regulation, soft start, limiting current, and thermal protection. The device is mounted in a 15-lead multiwatt plastic power package and requires few external components.
| Output Current | 10A |
|---|---|
| Output Voltage Range | 5.1V to 40V |
| Duty Cycle Range | 0 to 90% |
| Switching Frequency | Up to 500kHz |
| Maximum Input Voltage | 55V |
| Reference Voltage | 5.1V + 2% |
| Package Type | 15-lead multiwatt plastic power package |
| Efficiency (Vo = 12V, Io = 10A) | 87% |
The output voltage is variable from 5.1V to 40V.
The device delivers 10A at the specified output voltage range.
Efficient operation allows switching frequencies up to 500kHz.
Yes, it includes thermal shutdown protection.