Overview
The TPS61160DRVT from Texas Instruments is a highly efficient White LED driver designed for various portable and mobile applications. This component is part of the TPS61160 and TPS61161 family, which are boost converters that drive LEDs in series. The device features a 40-V rated integrated switch FET and operates at a fixed switching frequency of 600 kHz, which helps in reducing output ripple, improving conversion efficiency, and allowing the use of small external components. It is available in a compact 2-mm × 2-mm WSON package with a thermal pad, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 - 18 | V |
| Open LED Protection | 26 | V |
| Reference Voltage | 200 mV ±2% | mV |
| Switching Frequency | 600 kHz | kHz |
| Efficiency | Up to 90% | % |
| Package Type | 6-Pin WSON with Exposed Thermal Pad | |
| Operating Temperature Range | -40°C to +85°C | °C |
| Quiescent Current (No Load) | 1.8 mA | mA |
| Shutdown Current | 1 μA | μA |
| Undervoltage Lockout Threshold | 2.2 V | V |
Key Features
- Flexible digital and PWM brightness control through the CTRL pin using the EasyScale protocol or PWM signals.
- Built-in soft start to prevent inrush current.
- Integrated open LED protection to prevent output voltage from exceeding the device's absolute maximum voltage ratings.
- High efficiency of up to 90%.
- No audible noise generation due to non-bursting LED current.
- Compact 2-mm × 2-mm WSON package with thermal pad for efficient heat dissipation.
Applications
- Cellular Phones
- Portable Media Players
- Ultra Mobile Devices
- GPS Receivers
- White LED Backlighting for Media Form Factor Displays
Q & A
- What is the input voltage range of the TPS61160DRVT?
The input voltage range is 2.7 V to 18 V. - What is the switching frequency of the TPS61160DRVT?
The switching frequency is 600 kHz. - How is the LED current controlled in the TPS61160DRVT?
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 efficiency of the TPS61160DRVT?
The efficiency is up to 90%. - What type of package does the TPS61160DRVT come in?
The device is available in a 6-Pin WSON package with an exposed thermal pad. - What is the purpose of the integrated open LED protection?
The integrated open LED protection disables the device to prevent the output voltage from exceeding the device's absolute maximum voltage ratings during open LED conditions. - How does the TPS61160DRVT prevent audible noise?
The device does not burst the LED current, thus preventing audible noises on the output capacitor. - What are some common applications of the TPS61160DRVT?
Common applications include cellular phones, portable media players, ultra mobile devices, GPS receivers, and white LED backlighting for media form factor displays. - What is the operating temperature range of the TPS61160DRVT?
The operating temperature range is -40°C to +85°C. - How is the thermal shutdown feature implemented in the TPS61160DRVT?
The device features an internal thermal shutdown that turns off the device when the junction temperature exceeds 160°C and restarts when the temperature decreases by 15°C.
