Overview
The PTH04070WAZT is a highly integrated, low-cost switching regulator module produced by Texas Instruments. This module delivers up to 3 A of output current and is designed to operate efficiently with minimal power dissipation. It is available in a surface-mount package, making it ideal for applications where space is limited. The module features a wide input voltage range of 3 V to 5.5 V, allowing it to operate from either a 3.3-V or 5-V input bus. It can step down to voltages as low as 0.9 V from a 5-V input bus, with high efficiency and low power dissipation.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Output Current (IO) | 0 | - | 3 | A |
| Input Voltage Range (VI) | 3 | - | 5.5 | V |
| Set-point Voltage Tolerance (VO(tol)) | - | - | ±2% | %VO |
| Temperature Variation | - | - | ±0.5% | %VO |
| Line Regulation | - | - | ±1 mV | mV |
| Load Regulation | - | - | ±5 mV | mV |
| Total Output Voltage Variation | - | - | ±3% | %VO |
| Ambient Temperature Range | -40 | - | 85 | °C |
| Power Density | - | - | 160 W/in³ | W/in³ |
| Efficiency | - | - | Up to 94% | % |
Key Features
- High efficiency up to 94%
- Wide-output voltage adjustment range from 0.9 V to 3.6 V using a single external resistor
- On/Off Inhibit control for output voltage management
- Undervoltage Lockout (UVLO), output overcurrent protection, and overtemperature protection
- Surface-mount package with dimensions of 0.5 × 0.4 in
- No heat sink required due to low power dissipation
- Soft-start circuitry to limit in-rush current during power-up
- Continuous current limit characteristic and thermal shutdown protection
Applications
The PTH04070WAZT is suitable for a variety of applications, including:
- Telecommunications
- Test and measurement instruments
- General-purpose circuits
- High-end consumer products
Q & A
- What is the maximum output current of the PTH04070WAZT?
The maximum output current is 3 A at 85°C.
- What is the input voltage range for the PTH04070WAZT?
The input voltage range is from 3 V to 5.5 V.
- How is the output voltage adjusted on the PTH04070WAZT?
The output voltage can be adjusted using a single external resistor connected between the VOAdjust and GND pins.
- What safety agency approvals does the PTH04070WAZT have?
The module has UL/IEC/CSA-C22.2 60950-1 safety agency approvals.
- What is the ambient temperature range for the PTH04070WAZT?
The ambient temperature range is from -40°C to 85°C.
- Does the PTH04070WAZT require a heat sink?
No, the module does not require a heat sink due to its low power dissipation.
- What protection features does the PTH04070WAZT have?
The module features undervoltage lockout (UVLO), output overcurrent protection, and overtemperature protection.
- How does the on/off inhibit control work on the PTH04070WAZT?
The on/off inhibit control can disable the module's output by applying a low-level ground signal to the Inhibit pin.
- What is the power density of the PTH04070WAZT?
The power density is 160 W/in³.
- What is the typical efficiency of the PTH04070WAZT?
The typical efficiency is up to 94%.
