Overview
The TPS65301-Q1 is a versatile power management IC produced by Texas Instruments, designed for automotive and general-purpose applications. This device combines a single 3-MHz step-down buck regulator with three linear regulators, providing a comprehensive power supply solution. It features an integrated high-side switch with a 1.2-A peak current capability and a voltage range of 5.6 V to 40 V, with transients up to 45 V. The device is AEC-Q100 qualified, ensuring reliability in harsh automotive environments.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| VIN, VIN_D | 5.6 | - | 40 | V |
| BOOT | 5.6 | - | 48 | V |
| Switching Frequency | 2 | - | 3 | MHz |
| Peak Switch Current | - | 1.2 | - | A |
| Linear Regulator Outputs | - | 5 V, 3.3 V, 1.2 V | - | V |
| Operating Junction Temperature | -40 | - | 150 | °C |
| Operating Ambient Temperature | -40 | - | 125 | °C |
| Package Types | - | 24-Pin HTSSOP, 24-Pin VQFN | - | - |
Key Features
- Qualified for automotive applications with AEC-Q100 certification.
- Input voltage range of 5.6 V to 40 V with transients up to 45 V.
- 3-MHz step-down buck regulator with integrated high-side switch and 1.2-A peak current capability.
- One 5-V linear regulator and two linear regulator controllers for 3.3 V and 1.2 V outputs.
- Protected 5-V sensor supply output that tracks the 3.3-V supply.
- Soft start on IGN_EN and EN inputs.
- External clock input for synchronization.
- Programmable power-on-reset delay and reset-function filter timer.
- Voltage supervisor for VREG, 3.3 V, and 1.2 V supplies.
- Thermally enhanced 24-pin HTSSOP or VQFN package.
- Overcurrent protection, pulse-by-pulse current limit, thermal sensing, and shutdown due to excessive power dissipation.
Applications
- Power supply for TMS570 microcontrollers.
- Power supply for C28XXX DSP.
- General-purpose power supply for automotive applications.
Q & A
- What is the input voltage range of the TPS65301-Q1?
The input voltage range is from 5.6 V to 40 V, with transients up to 45 V.
- What are the output voltages provided by the TPS65301-Q1?
The device provides outputs of 5 V, 3.3 V, and 1.2 V.
- What is the switching frequency range of the buck regulator?
The switching frequency range is from 2 MHz to 3 MHz.
- Does the TPS65301-Q1 have built-in protection features?
- What are the package options for the TPS65301-Q1?
The device is available in 24-pin HTSSOP and 24-pin VQFN packages.
- Is the TPS65301-Q1 suitable for automotive applications?
- What is the operating junction temperature range of the TPS65301-Q1?
The operating junction temperature range is from -40°C to 150°C.
- Does the TPS65301-Q1 have a voltage supervisor?
- Can the TPS65301-Q1 be synchronized with an external clock?
- What is the purpose of the protected 5-V sensor supply output?
The protected 5-V sensor supply output tracks the 3.3-V linear regulator within specified limits.
