Overview
The TPS70248PWP is a dual-channel, low-dropout voltage regulator produced by Texas Instruments. This device is designed to provide two independent regulated output voltages, making it suitable for split-voltage systems. It features integrated supervisory functions, including power-on reset (POR), power good (PG) indicators, and a manual reset input. The TPS70248PWP is packaged in a 20-pin HTSSOP (PowerPAD™ TSSOP) and is known for its low quiescent current and high accuracy over load and temperature.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 6 | V |
| Output Current (Regulator 1) | 0 to 500 | mA |
| Output Current (Regulator 2) | 0 to 250 | mA |
| Output Voltage Options | 3.3V/1.5V, 3.3V/1.8V, 3.3V/2.5V, etc. | V |
| Quiescent Current | 190 μA (typ) | μA |
| Standby Current | 1 μA | μA |
| Dropout Voltage (Regulator 1) | 170 mV (typ) | mV |
| Dropout Voltage (Regulator 2) | 275 mV (typ) | mV |
| Operating Junction Temperature | -40 to +125 | °C |
| Package Type | 20-HTSSOP (PowerPAD™ TSSOP) |
Key Features
- Dual output voltages for split-supply systems
- Independent enable functions for each regulator
- Integrated supervisory functions: power-on reset (POR), power good (PG) indicators, and manual reset input
- Low quiescent current: 190 μA (typ) at full load
- Fast transient response
- Open drain power-on reset with 120ms delay
- Open drain power good outputs for each regulator
- Quick output capacitor discharge feature
- Undervoltage lockout (UVLO) feature
- High accuracy over load and temperature: 2% accuracy
- Low noise: 65 μVRMS without bypass capacitor
Applications
The TPS70248PWP is suitable for a variety of applications requiring dual regulated output voltages, such as:
- Split-voltage systems in industrial and automotive electronics
- Power supplies for embedded systems and microcontrollers
- Telecommunication equipment
- Medical devices requiring multiple voltage levels
- Consumer electronics with complex power requirements
Q & A
- What is the maximum output current for Regulator 1 and Regulator 2 in the TPS70248PWP?
The maximum output current for Regulator 1 is 500 mA, and for Regulator 2, it is 250 mA. - What is the quiescent current of the TPS70248PWP?
The quiescent current is typically 190 μA at full load. - What are the available output voltage options for the TPS70248PWP?
The device offers various output voltage combinations such as 3.3V/1.5V, 3.3V/1.8V, 3.3V/2.5V, and others. - Does the TPS70248PWP have integrated supervisory functions?
Yes, it includes power-on reset (POR), power good (PG) indicators, and a manual reset input. - What is the package type of the TPS70248PWP?
The device is packaged in a 20-pin HTSSOP (PowerPAD™ TSSOP). - What is the operating junction temperature range of the TPS70248PWP?
The operating junction temperature range is -40°C to +125°C. - How does the TPS70248PWP handle undervoltage conditions?
The device features an undervoltage lockout (UVLO) circuit that prevents the internal regulators from turning on until the input voltage reaches 2.5V. - What is the dropout voltage for Regulator 1 and Regulator 2?
The dropout voltage for Regulator 1 is typically 170 mV, and for Regulator 2, it is typically 275 mV. - Does the TPS70248PWP have a quick output capacitor discharge feature?
Yes, it includes a quick output capacitor discharge feature. - What is the accuracy of the output voltage over load and temperature?
The output voltage accuracy is 2% over load and temperature.
