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A5970D

STMicroelectronics
Part Number A5970D
Manufacturer STMicroelectronics
Description 1.5A switch step down switching regulator
Published Apr 1, 2008
Detailed Description A5970D Up to 1 A step-down switching regulator for automotive applications Datasheet - production data  Protection a...
Datasheet PDF File A5970D PDF File

A5970D
A5970D

Overview
A5970D Up to 1 A step-down switching regulator for automotive applications Datasheet - production data  Protection against feedback disconnection  Thermal shutdown Applications SO-8  Dedicated to automotive applications 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 Description 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  Zero load current operation  Internal current limiting  Inhibit for zero current consumption  Synchronization 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.
Pulse by pulse current limit with the internal frequency modulation offers an effective 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 Contents Contents A5970D 1 Pin settings .
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4 1.
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4 1.
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4 2 Electrical data .
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