Overview
The TPS61176RTER, manufactured by Texas Instruments, is a highly integrated multi-channel WLED (White Light Emitting Diode) backlight driver designed for applications such as tablets and laptops powered by a single-cell battery. This DC-DC regulator features a boost converter with an integrated 2A/40V power MOSFET and six current sink regulators, capable of driving up to 60 WLEDs with high current matching performance. Its market positioning targets consumer electronics, particularly devices requiring efficient and compact backlight solutions. The TPS61176RTER stands out for its mixed dimming mode, high dimming resolution, and support for true shutdown, making it a competitive choice in the LED driver market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Type | DC-DC Regulator | - | - |
| Topology | Boost | - | - |
| Channels | 6 | - | - |
| Input Voltage | 2.7 - 6.5 | V | - |
| Switching Frequency | 1 | MHz | - |
| Output Voltage | 38 | V | - |
| Output Current | 35 | mA | - |
| Dimming | PWM, Analog | - | - |
Key Features
- Integrated 2A/40V power MOSFET for efficient power conversion.
- Supports mixed dimming mode (PWM and analog) for enhanced efficiency.
- High dimming resolution up to 14 bits, minimizing visual flicker.
- True shutdown capability with external P-channel MOSFET driver.
- Integrated soft start, WLED open/short protection, and thermal shutdown.
Applications
The TPS61176RTER is ideal for consumer electronics, particularly in devices requiring backlighting solutions, such as tablets, laptops, and LCD displays. Its compact design and high efficiency make it suitable for battery-powered applications, ensuring extended battery life. Additionally, its robust protection features enhance reliability in demanding environments.
Q & A
1. What is the input voltage range of the TPS61176RTER?
The input voltage range is 2.7V to 6.5V.
2. How many WLEDs can the TPS61176RTER drive?
It can drive up to 60 WLEDs.
3. What is the switching frequency of the TPS61176RTER?
The switching frequency is 1MHz.
4. Does the TPS61176RTER support true shutdown?
Yes, it supports true shutdown via an external P-channel MOSFET driver.
5. What is the dimming resolution of the TPS61176RTER?
It supports up to 14-bit dimming resolution.
6. What protection features are integrated into the TPS61176RTER?
It includes soft start, WLED open/short protection, and thermal shutdown.
7. Can the TPS61176RTER be used in battery-powered devices?
Yes, it is designed for single-cell battery-powered applications.
8. What is the output voltage of the TPS61176RTER?
The output voltage is up to 38V.
9. What is the topology of the TPS61176RTER?
It uses a boost topology.
10. Does the TPS61176RTER support mixed dimming?
Yes, it supports both PWM and analog dimming modes.
