Overview
The TPS61165DRVT from Texas Instruments is a high-brightness white LED driver designed to drive LEDs in series. This boost converter operates at a fixed switching frequency of 1.2 MHz with a 1.2-A switch current limit, enabling the use of high-brightness LEDs in general lighting applications. The device features a 40-V rated integrated switch FET and supports flexible brightness control through either a one-wire digital interface (EasyScale™ protocol) or a pulse-width-modulation (PWM) signal. It also includes built-in soft start and open-LED protection to ensure reliable and safe operation.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3 V to 18 V |
| Output Voltage Range | Up to 38 V |
| Switching Frequency | 1.2 MHz |
| Switch FET Current Limit | 1.2 A |
| Reference Voltage | 200 mV with 2% accuracy |
| Package Type | 6-Pin WSON with thermal pad, and SOT-23 |
| Package Dimensions | 2 mm × 2 mm × 0.8 mm |
| Operating Temperature Range | -40°C to 85°C |
| Efficiency | Up to 90% |
Key Features
- Flexible one-wire digital and PWM brightness control through the CTRL pin
- Built-in soft start for smooth startup
- Integrated open-LED protection to prevent output voltage from exceeding maximum ratings
- No audible noise generation due to non-bursting LED current
- High efficiency of up to 90%
- Compact 6-Pin WSON package with thermal pad and SOT-23 package options
Applications
The TPS61165DRVT is suitable for various general lighting applications, including but not limited to:
- High-brightness LED lighting
- Automotive lighting systems
- Industrial lighting solutions
- Consumer electronics with LED backlighting
Q & A
- What is the input voltage range of the TPS61165DRVT?
The input voltage range is from 3 V to 18 V. - What is the switching frequency of the TPS61165DRVT?
The switching frequency is 1.2 MHz. - How is the LED current controlled in the TPS61165DRVT?
The LED current can be controlled using either a one-wire digital interface (EasyScale™ protocol) or a pulse-width-modulation (PWM) signal through the CTRL pin. - What is the maximum output voltage of the TPS61165DRVT?
The maximum output voltage is up to 38 V. - Does the TPS61165DRVT generate audible noise during operation?
No, the device does not generate audible noise due to its non-bursting LED current operation. - What type of protection does the TPS61165DRVT have for open LED conditions?
The device features integrated open-LED protection that disables the device to prevent the output from exceeding its absolute maximum voltage ratings. - What are the package options for the TPS61165DRVT?
The device is available in 6-Pin WSON with thermal pad and SOT-23 packages. - What is the operating temperature range of the TPS61165DRVT?
The operating temperature range is from -40°C to 85°C. - What is the efficiency of the TPS61165DRVT?
The efficiency is up to 90%. - What is the purpose of the built-in soft start in the TPS61165DRVT?
The built-in soft start ensures a smooth startup of the device.
