TI TPS65300QRHFRQ1

Suitable for automotive electronics applications. The TPS65300-Q1 power supply is a combination of a single-switch mode buck power supply and three linear regulators. This device is a monolithic high-voltage switching regulator with an integrated 1.2A peak current switch, a 45V power metal-oxide-semiconductor field-effect transistor (MOSFET), a low-voltage linear regulator, and two voltage regulator controllers. This device is equipped with a voltage monitor to monitor the output voltages of the switch mode power supply, the 3.3V linear regulator, and the 1.234V linear regulator. An external timing capacitor is used to set the power-on delay time and the release time of the reset output nRST. The reset output is also used to indicate whether the switch mode power supply, the 3.3V linear regulator power supply, or the 1.234V linear regulator power supply is outside the set limits. The 5V regulator tracks the 3.3V linear regulator within the specified limits. The switching frequency of the TPS65300-Q1 device ranges from 2MHz to 3MHz, enabling the use of half-height inductors and low-value input and output ceramic capacitors. External loop compensation provides users with the flexibility to optimize the converter response for appropriate operating conditions. This device incorporates various protection features, such as soft start (during IGN_EN turn-on or enable), cycle-by-cycle current limit, thermal sensing, and shutdown in case of excessive power dissipation.

• Automotive electronics applications, AEC-Q100 compliant
• Device temperature grade 1: ambient operating temperature range -40°C to 125°C
• Device HBM ESD classification level H2
• Device CDM ESD classification level C4B
• Input VIN voltage range 5.6V to 40V, transient voltage up to 45V
• All outputs support ceramic output capacitors
• Switching mode regulator with integrated high-side switch, recommended switching frequency range 2MHz to 3MHz
• Overcurrent protection and 1.2A peak switching current
• One linear regulator with 0.8V ±1.5% voltage reference and two linear regulator controllers
• Status indicator output for IGN_EN input
• External clock input for synchronization
• Programmable power-on reset delay and reset function filter timer for fast negative transients

• Power supply for TMS570 microcontrollers
• Power supply for C28XXX DSP
• General-purpose power supply for automotive microcontrollers and DSP