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A5970D
A5970D Up to 1 A step-down switching regulator for automotive applications Datasheet - production data Protection against feedback disconnection Thermal shutdown Applications Dedicated to automotive applications SO-8 Description Features Qualified following the AEC-Q100 requirements (see PPAP for more details) 1 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 VIN Low dropout operation: 100% duty cycle 250 kHz Internally fixed frequency The A5970D is a step-down monolithic power switching regulator with a minimum switch current limit of 1.35 A so it is able to deliver up to 1 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to VIN. The device uses an internal p-channel DMOS transistor (with a typical RDS(on) of 250 m) as switching element to minimize the size of the external components. Voltage feed-forward An internal oscillator fixes the switching frequency at 250 kHz. Having a minimum input voltage of Zero load current operation 4 V only it fits the automotive applications Internal current limiting requiring the device operation even in cold crank conditions. Pulse by pulse current limit with the Inhibit for zero current consumption internal frequency modulation offers an effective Synchronization constant current short-circuit protection. Figure 1. Application schematic November 2015 This is information on a product in full production. DocID13955 Rev 9 1/41 www.st.com
STM
STMicroelectronics NV
スイス
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