Overview
The TPS70402PWPR is a dual-output, low-dropout voltage regulator from Texas Instruments, designed for split-voltage systems. This device is part of the TPS704xx family and offers integrated supervisory voltage (SVS) functions, including power-on reset (POR) and power good (PG) signals. It is packaged in a 24-pin HTSSOP (PWP) package with PowerPAD™ for enhanced thermal performance.
The TPS70402PWPR can supply 1 A and 2 A from its two regulators, respectively, with a quiescent current of typically 185 µA at full load. It features fast transient response, low noise output, and stability with low ESR capacitors. The device also includes independent enable functions, manual reset input, and undervoltage lockout (UVLO) to ensure reliable operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | HTSSOP (PWP) | - |
| Pins | 24 | - |
| Operating Temperature Range | -40 to 125 | °C |
| Input Voltage Range (VIN1, VIN2) | 2.7 to 6 | V |
| Output Current (Regulator 1) | 0 to 1 | A |
| Output Current (Regulator 2) | 0 to 2 | A |
| Quiescent Current | 185 µA (typ) | - |
| Input Current During Standby | 2 mA | - |
| Noise (RMS Without Bypass Capacitor) | 78 µV | - |
| Thermal Shutdown Junction Temperature | +150 | °C |
| ESD Rating (HBM) | 2 kV | - |
Key Features
- Dual Output Voltages for Split-Supply Applications
- Independent Enable Functions
- Output Current Range of 1 A on Regulator 1 and 2 A on Regulator 2
- Fast Transient Response
- 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, and Dual Adjustable Outputs
- Open Drain Power-On Reset with 120-ms Delay
- Open Drain Power Good for Regulator 1 and Regulator 2
- Ultralow 185 µA (typ) Quiescent Current
- 2 mA Input Current During Standby
- Low Noise: 78 µV RMS Without Bypass Capacitor
- Quick Output Capacitor Discharge Feature
- One Manual Reset Input
- 2% Accuracy Over Load and Temperature
- Undervoltage Lockout (UVLO) Feature
- 24-Pin PowerPAD™ TSSOP Package
- Thermal Shutdown Protection
Applications
The TPS70402PWPR is suitable for a variety of applications requiring dual voltage supplies, such as:
- Split-voltage systems in industrial and automotive electronics
- Power supplies for embedded systems and microcontrollers
- Telecommunication equipment and networking devices
- Medical devices requiring multiple voltage levels
- Aerospace and defense electronics
Q & A
- What is the package type of the TPS70402PWPR?
The TPS70402PWPR is packaged in a 24-pin HTSSOP (PWP) package with PowerPAD™.
- What are the output current capabilities of the TPS70402PWPR?
Regulator 1 can supply up to 1 A, and Regulator 2 can supply up to 2 A.
- What is the quiescent current of the TPS70402PWPR?
The quiescent current is typically 185 µA at full load.
- Does the TPS70402PWPR have thermal shutdown protection?
Yes, the device features thermal shutdown protection with a junction temperature of +150°C.
- What are the voltage options available for the TPS70402PWPR?
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.
- How does the power-on reset (POR) function work on the TPS70402PWPR?
The POR is an active low, open drain output with a 120-ms delay after the input voltage exceeds the undervoltage threshold and the manual reset pin is in a high impedance state.
- What is the purpose of the power good (PG) pins on the TPS70402PWPR?
The PG pins report the voltage conditions at the output of each regulator and can be used to implement supervisory functions.
- Does the TPS70402PWPR have undervoltage lockout (UVLO) protection?
Yes, the device features UVLO to prevent the outputs from turning on until the input voltage reaches 2.5 V.
- What is the noise performance of the TPS70402PWPR?
The device has low noise output performance of 78 µV RMS without using any added filter bypass capacitors.
- How does the manual reset input function on the TPS70402PWPR?
The manual reset input is an active low input that can be used to reset the device manually.
- What is the storage temperature range for the TPS70402PWPR?
The storage temperature range is from -65°C to +150°C.
