Overview
The TPS61165DBVR, produced by Texas Instruments, is a high-brightness white LED driver designed to drive LEDs in series. This device is a boost converter that operates at a fixed switching frequency of 1.2 MHz with a switch current limit of 1.2 A, enabling the use of high-brightness LEDs in various lighting applications. It is available in compact packages, including the 2mm x 2mm WSON package with a thermal pad and the SOT-23 package. The device features flexible brightness control through either a one-wire digital interface (EasyScale™ protocol) or a pulse-width-modulation (PWM) signal, ensuring smooth and quiet operation without audible noise.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (VIN) | 3 | 18 | V | |
| Output Voltage Range (VO) | 38 | V | ||
| Switching Frequency | 1.2 | MHz | ||
| Switch FET Current Limit | 1.2 | A | ||
| Reference Voltage | 200 mV | |||
| Efficiency | Up to 90% | |||
| Operating Ambient Temperature (TA) | -40 | 105 | °C | |
| Operating Junction Temperature (TJ) | -40 | 125 | °C | |
| Package Types | WSON (6-pin), SOT-23 (6-pin) |
Key Features
- Flexible one-wire digital and PWM brightness control through the CTRL pin
- Built-in soft start to prevent inrush current
- Integrated open-LED protection to prevent output voltage from exceeding maximum ratings during open LED conditions
- High efficiency of up to 90%
- Compact package options: 2mm x 2mm WSON package with thermal pad and SOT-23 package
- 200 mV reference voltage with 2% accuracy
- 40-V rated integrated switch FET
Applications
- High-brightness LED lighting
- White LED backlighting for media form factor displays
- Handheld data terminals (EPOS)
- Thermostat displays
- Human machine interface (HMI)
- Video surveillance cameras
- Exit signs
- HMI and control panels
- Industrial PCs
- IR LED drivers
- Refrigerators and ovens
Q & A
- What is the input voltage range of the TPS61165DBVR?
The input voltage range is from 3 V to 18 V.
- What is the switching frequency of the TPS61165DBVR?
The switching frequency is 1.2 MHz.
- How can the brightness of the LEDs be controlled using the TPS61165DBVR?
The brightness can be controlled using either a one-wire digital interface (EasyScale™ protocol) or a pulse-width-modulation (PWM) signal through the CTRL pin.
- What type of protection does the TPS61165DBVR offer 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 during open LED conditions.
- What are the package options available for the TPS61165DBVR?
The device is available in 2mm x 2mm WSON package with a thermal pad and SOT-23 package.
- What is the efficiency of the TPS61165DBVR?
The device has an efficiency of up to 90%.
- What is the reference voltage of the TPS61165DBVR and its accuracy?
The reference voltage is 200 mV with an accuracy of 2%.
- What is the maximum breakdown voltage of the integrated switch FET in the TPS61165DBVR?
The maximum breakdown voltage of the integrated switch FET is 40 V.
- What are some common applications of the TPS61165DBVR?
Common applications include high-brightness LED lighting, white LED backlighting, handheld data terminals, thermostat displays, and more.
- How does the TPS61165DBVR prevent audible noise during operation?
The device does not burst the LED current in either digital or PWM mode, thus preventing audible noise on the output capacitor.
