TPS43340QPHPRQ1 AC Low IQ 30uA Switching Voltage Regulators

  TPS43340QPHPRQ1 Switching Voltage Regulators AC Lo Iq 30uA,Hi VIN Quad-Out Pwr Sply

1.APPLICATIONS
•Navigation
•TFT Cluster Display
Infotainment
•AutomotiveECU
•Advanced Driver Information Systems
•Multi Rail DC Power Distribution Systems

2.Simplified Schematic

3.DESCRIPTION

The TPS43340 is a dual buck regulator controller (BUCK1, BUCK2), single Buck regulator converter (BUCK3)
and linear regulator (LREG1) designed for powering the Texas Instruments family of DSPs and Microcontrollers
or general market MCU products. The device features integrated short-circuit and over-current protection on the
gate drive outputs for the Buck regulator controllers. Independent current fold back control for each Buck
regulator supply during regulator output short to ground. A soft start is incorporated on each output supply to
ensure on initial power up these regulated outputs are not in current limit. Reset delay is implemented on power
up to allow the outputs of BUCK1, BUCK2, BUCK3 and Linear regulator to get to stable regulation. The delay is
programmed with an external capacitor to a maximum range of 300 ms. Each power supply output has
adjustable output voltage based on the external resistor network settings. The device has sequencing control
during power up and down of the output rails based on the enable/disable control or soft start

4.BUCK1EFFICIENCY

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