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TPS5430 Buck Regulator

TPS5430

Texas Instrumentspower regulator

The TPS5430 is a 3A buck regulator with an integrated high-side MOSFET, designed for wide input voltage ranges and adjustable output voltages down to 1.22V.

Manufacturer datasheet
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Specifications

8
Operating Voltage
5.5V to 36V (TPS5430); 5.5V to 23V (TPS5431)
Supply Current
VIN quiescent current: 2-4.4mA; Shutdown supply current: 15-50μA
Interface
PWM, I2C (SDA/SCL), SPI (SCK/MOSI/MISO/CS), UART (TX/RX)
Resolution
1.5% initial accuracy
Range
Output voltage: adjustable down to 1.22V
Accuracy
1.5% initial accuracy
Temperature Range
-40°C to 125°C
Package
8-pin SOIC PowerPAD™

Pinout

7
PinNameFunctionsNotes
BOOTBoost capacitor for the high-side FET gate driver
GND
Connect 0.01μF low ESR capacitor from BOOT pin to PH pin.
NCNot connected internally
—
VSENSEFeedback voltage for the regulator
GND
Connect to output voltage divider.
ENAOn and off control
GPIO
Below 0.5V, the device stops switching; above 1.3V, the device starts switching. ENA can be left floating.
GNDGround
GND
VINInput supply voltage
POWER
Bypass VIN pin to GND pin close to device package with a high quality, low ESR ceramic capacitor.
PHSource of the high side power MOSFET
GPIO
Connected to external inductor and diode.

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