STMicroelectronics A5975D
The A5975D is a step-down monolithic power switching regulator with a minimum switch current limit of 3.75 A, it is therefore able to deliver up to 3 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to a HSOP8 package with exposed frame, that allows to reduce the RTHJ-A down to approximately 40 °C/W.| Part No. | A5975D |
|---|---|
| Datasheet | A5975D Download |
| Manufacturer |  STMicroelectronics |
| Description | Up to 3A step-down switching regulator |
| Buy | Stock & Price |
FEATURES
● Qualified following the AEC-Q100 requirements (see PPAP for more details)● 3 A DC output current
● Operating input voltage from 4 V to 36 V
● 3.3 V / (± 2%) reference voltage
● Output voltage adjustable from 1.235 V to 35 V
● Low dropout operation: 100% duty cycle
● 250 kHz internally fixed frequency
● Voltage feed-forward
● Zero load current operation
● Internal current limiting
● Inhibit for zero current consumption
DESCRIPTION
The device uses an internal P-channel DMOS transistor (with a typical RDS(on) of 250 mΩ) as switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 250 kHz. Having a minimum input voltage of only 4 V, it fits automotive applications requiring device operation even in cold crank conditions. Pulse-by-pulse current limit with the internal frequency modulation offers an effective constant current short-circuit protection.● Synchronization
● Protection against feedback disconnection
● Thermal shutdown Figure 1.
