Overview
The TPS61160DRVR, produced by Texas Instruments, is a high-efficiency white LED driver designed to drive LEDs in series. This boost converter features a 40-V rated integrated switch FET and operates at a fixed switching frequency of 600 kHz. This design reduces output ripple, improves conversion efficiency, and allows for the use of small external components. The device is available in a compact 2-mm × 2-mm WSON package with a thermal pad, making it ideal for space-constrained applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 18 | V |
| Open LED Protection | 26 V (TPS61160), 38 V (TPS61161) | V |
| Reference Voltage | 200 mV ±2% | mV |
| Switching Frequency | 600 kHz | kHz |
| Efficiency | Up to 90% | % |
| Package Type | 2-mm × 2-mm WSON with thermal pad | - |
| Operating Quiescent Current | 1.8 mA (no load) | mA |
| Shutdown Current | 1 μA | μA |
| Undervoltage Lockout Threshold | 2.2 V (typical) | V |
| Thermal Shutdown Temperature | 160°C (typical) | °C |
Key Features
- Flexible Brightness Control: Supports both digital (EasyScale protocol) and PWM brightness control through the CTRL pin.
- High Efficiency: Achieves up to 90% efficiency, reducing power loss and heat generation.
- Integrated Open LED Protection: Prevents the output voltage from exceeding the device's absolute maximum voltage ratings during open LED conditions.
- Soft Start: Built-in soft start feature to prevent inrush current and ensure smooth startup.
- Compact Package: Available in a space-saving 2-mm × 2-mm WSON package with a thermal pad.
- Low Noise Operation: Does not burst the LED current, eliminating audible noises on the output capacitor.
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 TPS61160DRVR?
The input voltage range is from 2.7 V to 18 V.
- What are the open LED protection thresholds for TPS61160 and TPS61161?
The TPS61160 has an open LED protection threshold of 26 V, while the TPS61161 has a threshold of 38 V.
- How is the LED current controlled in the TPS61160DRVR?
The LED current can be controlled using either the one-wire digital interface (EasyScale protocol) or a PWM signal through the CTRL pin.
- What is the switching frequency of the TPS61160DRVR?
The switching frequency is fixed at 600 kHz.
- What is the efficiency of the TPS61160DRVR?
The device achieves up to 90% efficiency.
- What package type is the TPS61160DRVR available in?
The device is available in a 2-mm × 2-mm WSON package with a thermal pad.
- How does the TPS61160DRVR handle undervoltage conditions?
The device features an undervoltage lockout that prevents operation below a typical threshold of 2.2 V.
- What is the thermal shutdown temperature of the TPS61160DRVR?
The device shuts down at a typical junction temperature of 160°C and restarts when the temperature decreases by 15°C.
- Can the TPS61160DRVR be used in noise-sensitive applications?
- How is the brightness dimming mode selected in the TPS61160DRVR?
The dimming mode is selected each time the device is enabled. The default mode is PWM dimming, but it can be changed to one-wire mode by following a specific digital pattern on the CTRL pin.
