Overview
The Texas Instruments TPS61165DRVRG4 is a high-efficiency, high-brightness white LED driver integrated circuit (IC) designed for driving white LEDs in series. This device is part of the TPS61165 series and is packaged in a compact 2mm x 2mm QFN (WSON) or SOT-23 package. It is ideal for general lighting applications, particularly where high brightness and efficient power management are required.
The TPS61165DRVRG4 features a boost converter with a fixed 1.2 MHz switching frequency and a 1.2 A switch current limit, enabling the use of high-brightness LEDs. The device supports flexible brightness control through either a one-wire digital interface (EasyScale™ protocol) or pulse-width modulation (PWM) signals.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 3 to 18 | V |
| Open LED Protection Voltage | 38 | V |
| Reference Voltage Accuracy | 200 mV ± 2% | mV |
| Switch FET Current Limit | 1.2 A | A |
| Switching Frequency | 1.2 MHz | MHz |
| Efficiency | Up to 90% | % |
| Package Types | WSON (DRV), SOT-23 (DBV) | |
| Operating Junction Temperature Range | -40 to 150 | °C |
| Storage Temperature Range | -65 to 150 | °C |
Key Features
- High-efficiency boost converter with up to 90% efficiency
- Wide input voltage range: 3 V to 18 V
- Integrated 40 V / 1.2 A switch FET with 1.2 MHz fixed switching frequency
- Flexible brightness control using one-wire digital interface (EasyScale™ protocol) or PWM signals
- Built-in soft start and open-LED protection
- No audible noise generation due to non-bursting LED current
- Compact package options: 2mm x 2mm QFN (WSON) and SOT-23
Applications
- General lighting applications requiring high brightness
- Portable electronics
- Smart backlight control systems
- LED lighting designs in various consumer and industrial products
Q & A
- What is the input voltage range of the TPS61165DRVRG4?
The input voltage range is from 3 V to 18 V.
- What is the switching frequency of the TPS61165DRVRG4?
The switching frequency is fixed at 1.2 MHz.
- How can the brightness of the LEDs be controlled using the TPS61165DRVRG4?
The brightness can be controlled using either a one-wire digital interface (EasyScale™ protocol) or pulse-width modulation (PWM) signals through the CTRL pin.
- What is the maximum current limit of the switch FET in the TPS61165DRVRG4?
The maximum current limit of the switch FET is 1.2 A.
- Does the TPS61165DRVRG4 generate audible noise during operation?
No, the device does not generate audible noise as it does not burst the LED current.
- What types of packages are available for the TPS61165DRVRG4?
The device is available in 2mm x 2mm QFN (WSON) and SOT-23 packages.
- What is the efficiency of the TPS61165DRVRG4?
The efficiency is up to 90%.
- What protection features does the TPS61165DRVRG4 have?
The device features integrated open-LED protection to prevent the output from exceeding its absolute maximum voltage ratings during open LED conditions.
- What is the operating junction temperature range of the TPS61165DRVRG4?
The operating junction temperature range is from -40°C to 150°C.
- What are some common applications of the TPS61165DRVRG4?
Common applications include general lighting, portable electronics, and smart backlight control systems.
