Overview
The TPS70148PWP, produced by Texas Instruments, is a dual-output low dropout voltage regulator designed to provide a complete power management solution for split-voltage DSP (Digital Signal Processor) systems. This device is part of the TPS701xx family, which is optimized for high-performance power management in DSP applications. It features dual regulated output voltages, fast transient response, and high accuracy, making it suitable for demanding DSP power requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range (VIN1, VIN2) | -0.3 to +7 | V |
| Output Voltage 1 (VOUT1) | 1.5 V | V |
| Output Voltage 2 (VOUT2) | 3.3 V | V |
| Output Current 1 (IOUT1) | 500 mA | mA |
| Output Current 2 (IOUT2) | 250 mA | mA |
| Dropout Voltage (Typical) | 170 mV | mV |
| Quiescent Current (Maximum) | 230 μA | μA |
| Operating Temperature Range | -40°C to +125°C | °C |
| Package Type | HTSSOP-20 (PWP) |
Key Features
- Dual Output Voltages: Provides two regulated output voltages, making it ideal for split-voltage DSP systems.
- Low Dropout Voltage: Typically 170 mV, ensuring efficient power delivery.
- Low Quiescent Current: Maximum of 230 μA, independent of output loading.
- Power-Up Sequencing: Programmable sequencing allows control over which output voltage is turned on first.
- Enable and Sleep Mode: Active low enable input and sleep mode to reduce input currents.
- Integrated SVS (Power-On Reset): RESET output monitors output voltages and provides a logic output to the system.
- Power Good (PG1) Output: Indicates the status of VOUT1 regulator.
- Manual Reset Pins (MR1 and MR2): Active low inputs for triggering a reset condition.
Applications
The TPS70148PWP is designed for high-performance power management in various applications, including:
- DSP (Digital Signal Processor) systems requiring split-voltage supplies.
- Other digital systems that need dual regulated output voltages.
- Systems requiring low dropout voltage and low quiescent current.
- Applications needing programmable power-up sequencing and integrated power management features.
Q & A
- What is the primary function of the TPS70148PWP?
The TPS70148PWP is a dual-output low dropout voltage regulator designed to provide power management solutions for split-voltage DSP systems.
- What are the output voltages of the TPS70148PWP?
The device provides two regulated output voltages: 1.5 V and 3.3 V.
- What is the typical dropout voltage of the TPS70148PWP?
The typical dropout voltage is 170 mV.
- How does the power-up sequencing work on the TPS70148PWP?
The power-up sequencing is programmable via the SEQ terminal, allowing control over which output voltage (VOUT1 or VOUT2) is turned on first.
- What is the purpose of the EN terminal on the TPS70148PWP?
The EN terminal is an active low enable input that enables or shuts down the device.
- What is the function of the RESET output on the TPS70148PWP?
The RESET output monitors the status of VOUT2 and provides a logic output to the system in case of an undervoltage condition.
- How does the Power Good (PG1) output work on the TPS70148PWP?
The PG1 output indicates the status of the VOUT1 regulator, going to a high impedance state when VOUT1 reaches 95% of its regulated voltage.
- What are the manual reset pins (MR1 and MR2) used for on the TPS70148PWP?
The MR1 and MR2 pins are active low inputs used to trigger a reset condition.
- What is the operating temperature range of the TPS70148PWP?
The operating temperature range is -40°C to +125°C.
- What package type is the TPS70148PWP available in?
The device is available in a 20-pin HTSSOP (PWP) package.
