A5970D
A5970D is 1.5A switch step down switching regulator manufactured by STMicroelectronics.
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 k Hz 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 mΩ) as switching element to minimize the size of the external ponents.
- Voltage feedforward
- Zero load current operation
- Internal current limiting
- Inhibit for zero current consumption
- Synchronization
An internal oscillator fixes the switching frequency at 250 k Hz. 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
April 2024
This is information on a product in full production.
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Contents
Contents
Pin settings
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1.1 Pin connection
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1.2 Pin description
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