Overview
The TPS92641PWPR/NOPB is a synchronous buck controller designed by Texas Instruments for precision dimming LED drivers. This device is part of the TPS9264x family and is optimized for high-speed capability and high efficiency. It features a wide input voltage range of 7 V to 85 V, making it versatile for various applications. The controller includes advanced protection features such as cycle-by-cycle current protection, overvoltage protection, and thermal shutdown. It also supports both analog and PWM input signals, providing exceptional dimming control range.
Key Specifications
| Parameter | Value |
|---|---|
| Package | HTSSOP-16 |
| Input Voltage Range | 7 V to 85 V |
| Oscillator Frequency Range | Up to 1 MHz |
| MOSFET Gate Drivers | 2-Ω, 1-A peak |
| Shunt FET Dimming | Supported |
| Precision Voltage Reference | 3 V ±2% |
| Thermal Resistance (Junction-to-Ambient) | 38.7 °C/W |
| Protection Features | Cycle-by-cycle current protection, overvoltage protection, thermal shutdown |
Key Features
- High-voltage start-up regulator with a wide input range of 7 V to 85 V
- Programmable switching frequency up to 1 MHz
- 2-Ω, 1-A peak MOSFET gate drivers
- Shunt FET dimming input and MOSFET driver for high resolution PWM dimming
- Precision voltage reference of 3 V ±2%
- Low power shutdown mode and thermal shutdown
- Cycle-by-cycle current protection and overvoltage protection
- Support for both analog and PWM input signals
Applications
- LED Driver / Constant Current Regulator
- Architectural LED Lighting Drivers
- Automotive LED Drivers
- General LED Illumination
Q & A
- What is the input voltage range of the TPS92641PWPR/NOPB?
The input voltage range is from 7 V to 85 V. - What is the maximum oscillator frequency of the TPS92641PWPR/NOPB?
The maximum oscillator frequency is up to 1 MHz. - Does the TPS92641PWPR/NOPB support shunt FET dimming?
Yes, it supports shunt FET dimming. - What is the precision voltage reference of the TPS92641PWPR/NOPB?
The precision voltage reference is 3 V ±2%. - What protection features are included in the TPS92641PWPR/NOPB?
The device includes cycle-by-cycle current protection, overvoltage protection, and thermal shutdown. - What type of input signals does the TPS92641PWPR/NOPB support?
The device supports both analog and PWM input signals. - What is the package type of the TPS92641PWPR/NOPB?
The package type is HTSSOP-16. - What is the thermal resistance (junction-to-ambient) of the TPS92641PWPR/NOPB?
The thermal resistance is 38.7 °C/W. - What are some common applications of the TPS92641PWPR/NOPB?
Common applications include LED drivers, architectural LED lighting, automotive LED drivers, and general LED illumination. - Does the TPS92641PWPR/NOPB have a low power shutdown mode?
Yes, it has a low power shutdown mode.
