A5973D
Up to 2 A step-down switching regulator for automotive applications
Datasheet - production data
Applications
...
A5973D
Up to 2 A step-down switching
regulator for automotive applications
Datasheet - production data
Applications
Dedicated to automotive applications
HSOP8 - exposed pad
Description
Features
Qualified following the AEC-Q100 requirements (see PPAP for more details)
2 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 feedforward Zero load current operation Internal current limiting Inhibit for zero current consumption
The A5973D is a step-down monolithic power switching
regulator with a minimum switch current limit of 2.25 A so it is able to deliver up to 2 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 an HSOP8 package with 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 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 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 consta...