Overview
The TPS70458PWPR is a dual-output, low-dropout voltage regulator produced by Texas Instruments. This device is part of the TPS704xx family, which is designed for split-supply applications. It features integrated supervisory voltage (SVS) functions, including power-on reset (POR) and power good (PG) indicators. The regulator is capable of supplying 1 A and 2 A from its two outputs, respectively, with a quiescent current of typically 185 µA at full load. The device is packaged in a 24-pin HTSSOP (PWP) package and operates over a temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | HTSSOP (PWP) | - |
| Pins | 24 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Output Current (Regulator 1) | 1 | A |
| Output Current (Regulator 2) | 2 | A |
| Quiescent Current | 185 µA (typ) | - |
| Input Current During Standby | 2 µA | - |
| Voltage Dropout (Max) | 0.25 V @ 1 A | - |
| Output Voltage Options | 3.3-V/2.5-V, 3.3-V/1.8-V, 3.3-V/1.5-V, 3.3-V/1.2-V, Dual Adjustable | - |
| Accuracy Over Load and Temperature | 2% | - |
| Thermal Shutdown Junction Temperature | +150 | °C |
Key Features
- Dual Output Voltages for Split-Supply Applications
- Independent Enable Functions
- Fast Transient Response
- Open Drain Power-On Reset with 120-ms Delay
- Open Drain Power Good for Regulator 1 and Regulator 2
- Ultralow Quiescent Current (185 µA typ)
- Low Noise: 78 µV RMS Without Bypass Capacitor
- Quick Output Capacitor Discharge Feature
- One Manual Reset Input
- Undervoltage Lockout (UVLO) Feature
- 24-Pin PowerPAD™ TSSOP Package
- Thermal Shutdown Protection
Applications
The TPS70458PWPR is suitable for a variety of applications requiring dual voltage supplies, such as:
- Split-supply systems
- Power management in industrial and automotive systems
- Telecommunication equipment
- Medical devices requiring multiple voltage levels
- Consumer electronics with complex power requirements
Q & A
- What is the package type of the TPS70458PWPR?
The TPS70458PWPR is packaged in a 24-pin HTSSOP (PWP) package.
- What are the output current capabilities of the TPS70458PWPR?
Regulator 1 can support up to 1 A, and regulator 2 can support up to 2 A.
- What is the quiescent current of the TPS70458PWPR?
The quiescent current is typically 185 µA at full load.
- What are the voltage options available for the TPS70458PWPR?
The device offers fixed voltage options such as 3.3-V/2.5-V, 3.3-V/1.8-V, 3.3-V/1.5-V, 3.3-V/1.2-V, and dual adjustable outputs.
- Does the TPS70458PWPR have thermal shutdown protection?
- What is the operating temperature range of the TPS70458PWPR?
The device operates over a temperature range of -40°C to 125°C.
- How does the power-on reset (POR) function work on the TPS70458PWPR?
The POR is an active low, open drain output that requires a pull-up resistor and goes into a high impedance state after a 120-ms delay when the input voltage conditions are met.
- What is the noise performance of the TPS70458PWPR?
The device has low noise output performance of 78 µV RMS without using any added filter bypass capacitors.
- Does the TPS70458PWPR have undervoltage lockout (UVLO) feature?
- How does the manual reset input work on the TPS70458PWPR?
The manual reset input allows for external control of the reset function, enabling the user to reset the device manually.
