Overview
The PTN78000WAH is a high-efficiency, step-down Integrated Switching Regulator (ISR) produced by Texas Instruments. It is part of the PTN78000 series, which represents the third generation in the evolution of the popular 78ST100 series of products. This regulator is designed to provide high-efficiency voltage conversion for loads up to 1.5 A and operates over a wide input voltage range. The PTN78000WAH is smaller and lighter than its predecessors, with improved thermal characteristics and compliance with RoHS and lead-free standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | 0 to 1.5 | A |
| Input Voltage Range | 7 to 36 | V |
| Output Voltage Adjust Range | 2.5 to 12.6 | V |
| Set-point Voltage Tolerance | ±2% | |
| Temperature Variation | ±0.5% | |
| Line Regulation | ±10 mV | |
| Load Regulation | ±10 mV | |
| Total Output Voltage Variation | ±3% | |
| Operating Temperature | –40°C to 85°C | |
| Weight | 2 grams | |
| Flammability | Meets UL 94 V-O |
Key Features
- High efficiency up to 95%
- On/Off inhibit function
- Undervoltage lockout
- Output current limit
- Overtemperature shutdown
- Surface mount package available
- Adjustable output voltage using a single external resistor
- Compact and lightweight design
- Compliance with RoHS and lead-free standards
Applications
The PTN78000WAH is suited for a wide variety of general-purpose applications, including:
- General-purpose, industrial controls
- HVAC systems
- Test and measurement equipment
- Medical instrumentation
- AC/DC adaptors
- Vehicles, marine, and avionics
Q & A
- What is the output current rating of the PTN78000WAH?
The output current rating is up to 1.5 A. - What is the input voltage range for the PTN78000WAH?
The input voltage range is from 7 V to 36 V. - How is the output voltage adjusted on the PTN78000WAH?
The output voltage is adjusted using a single external resistor connected between the VO Adjust control (pin 4) and GND (pin 1). - What are the operating temperature limits for the PTN78000WAH?
The operating temperature range is from –40°C to 85°C. - Does the PTN78000WAH have an on/off inhibit function?
Yes, it has an on/off inhibit function. - What is the weight of the PTN78000WAH module?
The weight is 2 grams. - Is the PTN78000WAH compliant with RoHS and lead-free standards?
Yes, it is compliant with RoHS and lead-free standards. - What are the minimum input capacitance requirements for the PTN78000WAH?
The minimum input capacitance is 2.2 µF. - What is the flammability rating of the PTN78000WAH?
It meets UL 94 V-O flammability standards. - What are some common applications for the PTN78000WAH?
Common applications include general-purpose industrial controls, HVAC systems, test and measurement equipment, medical instrumentation, AC/DC adaptors, and vehicles, marine, and avionics.
