A5973ADTR Active
Up to 1.5 A step-down switching regulator for automotive applications
| Input Voltage Min Volt | 4.0 |
| Input Voltage Max Volt | 36.0 |
| Operating Temp Min Celsius | -40.0 |
| Operating Temp Max Celsius | 125.0 |
| ECCN US | EAR99 |
| ECCN EU | NEC |
| Packing Type | Tape And Reel |
| ROHS Compliance Grade | Ecopack2 |
| Grade | Automotive |
| Package Name | PowerSO-8 |
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The A5973AD is a step-down monolithic power switching regulator with a minimum switch current limit of 1.8 A, so it is able to deliver up to 1.5 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to VIN. The high current level is also achieved thanks to an HSOP8 package with an exposed frame, that allows to reduce the Rth(JA)down to approximately 40 °C/W. The device uses an internal P-channel DMOS transistor (with a typical RDS(on)of 250 mΩ) as a switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 500 kHz. Having a minimum input voltage of 4 V only it fits the automotive applications requiring the device operation even in cold crank conditions. A pulse-by-pulse current limit with the internal frequency modulation offers an effective constant current short-circuit protection.