The B5973D is a 2A step-down switching regulator dedicated to automotive applications. Its features include: Qualified following the AEC-Q100 requirements (temperature Grade 1), see PPAP for more details. 2A DC output current. Operating input voltage from 4V to 36V. 3.3V/(±2%) reference voltage. Output voltage adjustable from 1.235V to 35V. Low dropout operation: 100% duty cycle. 250kHz internally fixed frequency. Voltage feedforward. Zero load current operation. Internal current limiting. Inhibit for zero current consumption. Synchronization. Protection against feedback disconnection. Thermal shutdown.
The B5973D is a step-down monolithic power switching regulator specifically designed for automotive applications. It features a minimum switch current limit of 2.25 A, allowing it to deliver up to 2 A DC current to the load depending on application conditions. The device operates with an input voltage range from 4 V to 36 V and provides an adjustable output voltage from 1.235 V to 35 V.
| Output voltage range | 1.235 V to 35 V |
|---|---|
| Switching frequency | 250 kHz |
| Maximum output current | 2.25 A |
| Package type | HSOP8 exposed pad |
| Maximum thermal resistance | 40 °C/W |
The B5973D has a minimum switch current limit of 2.25 A.
No, the switching frequency is fixed internally at 250 kHz.