Overview
The TPS70158PWP is a dual-output low-dropout (LDO) voltage regulator produced by Texas Instruments. This device is part of the TPS701xx family, designed to provide a comprehensive power management solution for various applications, particularly those involving digital signal processors (DSPs), processors, ASICs, and FPGAs. The TPS70158PWP is notable for its ability to manage power sequencing, making it ideal for systems that require precise voltage regulation and sequencing.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | -0.3 to +7 | V |
| Output Voltage Range (VOUT1, VSENSE1) | 3.3 V | V |
| Output Voltage Range (VOUT2, VSENSE2) | 2.5 V | V |
| Maximum Output Current (Regulator 1) | 500 mA | mA |
| Maximum Output Current (Regulator 2) | 250 mA | mA |
| Voltage Dropout (Max) @ 500 mA | 0.28 V | V |
| Quiescent Current (Iq) | Low and stable over full load range | mA |
| Junction Temperature Range | -40 to +150 | °C |
| Storage Temperature Range | -65 to +150 | °C |
| Package Type | 20-Pin HTSSOP | |
| ESD Rating (HBM) | 2 kV | kV |
Key Features
- Dual-Output LDO Regulator: Provides two regulated output voltages, typically 3.3V and 2.5V, with the ability to support other voltage combinations.
- Power-Up Sequencing: Allows for programmable power-up sequencing, ensuring that the outputs turn on in a controlled manner.
- Low Dropout Voltage: Offers a maximum dropout voltage of 0.28V at 500mA, ensuring efficient voltage regulation.
- Low Quiescent Current: Features a low and stable quiescent current over the full load range, enhancing power efficiency.
- Fast Transient Response: Stable with 10µF low ESR capacitors, providing fast transient response without the need for additional filter bypass capacitors.
- SVS Supervisory Circuit: Includes a supervisory voltage sense (SVS) circuit for monitoring output voltages and generating a power-good signal.
- Manual Reset Inputs: Provides manual reset inputs (MR1 and MR2) for triggering a reset condition.
- Enable Function: Features an enable terminal to control the device's operation, allowing it to be shut down or enabled as needed.
Applications
- DSP Systems: Ideal for TMS320 DSP applications requiring power sequencing and dual output voltage regulation.
- Processor Power: Suitable for powering processors, ASICs, and FPGAs in various digital systems.
- Digital Applications: Used in applications where precise voltage regulation and sequencing are critical, such as in telecommunications, industrial control systems, and embedded systems.
Q & A
- What is the TPS70158PWP used for?
The TPS70158PWP is used as a dual-output low-dropout voltage regulator, particularly in applications requiring power sequencing, such as DSP systems, processors, ASICs, and FPGAs.
- What are the output voltages of the TPS70158PWP?
The TPS70158PWP typically provides output voltages of 3.3V and 2.5V, but other voltage combinations are also available.
- What is the maximum dropout voltage of the TPS70158PWP?
The maximum dropout voltage is 0.28V at 500mA.
- How does the power-up sequencing work in the TPS70158PWP?
The power-up sequencing can be programmed so that one output turns on before the other. For example, VOUT2 can be set to turn on first, followed by VOUT1 once VOUT2 reaches approximately 83% of its regulated output voltage.
- What is the quiescent current of the TPS70158PWP?
The quiescent current is low and stable over the full load range.
- What type of package does the TPS70158PWP come in?
The TPS70158PWP comes in a 20-Pin HTSSOP package.
- What is the junction temperature range of the TPS70158PWP?
The junction temperature range is -40°C to +150°C.
- Does the TPS70158PWP have any supervisory features?
Yes, it includes a supervisory voltage sense (SVS) circuit and power-good signals to monitor output voltages.
- How can the TPS70158PWP be enabled or disabled?
The device can be enabled or disabled using the enable terminal (EN). When EN is low, the device is enabled; when EN is high, the device is in shutdown mode.
- What are the manual reset inputs used for in the TPS70158PWP?
The manual reset inputs (MR1 and MR2) are used to trigger a reset condition when either input is pulled to a logic low state.
