TPS61151
Dual-output LED drivers for efficient lighting and display applications
Manufacturer： ['rochester', 'analog-devices', 'ti']
series introduction
# TPS61151 Product Series Introduction
## 1. Overview
The TPS61151 product series is a remarkable line of integrated circuits (ICs) developed by Texas Instruments, designed to address the complex power management needs in a wide range of electronic devices. These devices are specifically engineered as high - efficiency boost converters, capable of stepping up a low input voltage to a higher output voltage, making them an essential component in battery - powered and portable applications.
## 2. Key Features
### High Efficiency
One of the most prominent features of the TPS61151 series is its high efficiency. With advanced circuit design and optimized power conversion techniques, these boost converters can achieve efficiency levels of up to 96%. This high efficiency is crucial in battery - powered devices as it minimizes power loss, extends battery life, and reduces heat generation. For example, in a portable media player, the high - efficiency operation of the TPS61151 ensures that the battery can power the device for a longer period, providing a better user experience.
### Wide Input and Output Voltage Range
The TPS61151 series offers a wide input voltage range, typically from 0.9 V to 5.5 V. This flexibility allows it to be used with various power sources, such as single - cell lithium - ion batteries (which typically have an output voltage range of 3.0 V - 4.2 V), alkaline batteries (1.5 V per cell), and nickel - metal hydride (NiMH) batteries. On the output side, it can provide a regulated output voltage up to 28 V, making it suitable for powering a variety of loads, including LEDs, OLED displays, and other high - voltage components.
### Adjustable Output Voltage
The output voltage of the TPS61151 can be easily adjusted using external resistors. This adjustability feature gives designers the freedom to tailor the output voltage according to the specific requirements of their applications. For instance, in an LED lighting system, the output voltage can be adjusted to match the forward voltage of the LEDs, ensuring optimal performance and brightness.
### Low Quiescent Current
The TPS61151 series has a very low quiescent current, typically in the range of a few microamperes. This low quiescent current is essential in applications where the device spends a significant amount of time in standby or low - power mode. In a wireless sensor node, for example, the low quiescent current of the TPS61151 helps to conserve battery power during periods of inactivity, extending the overall battery life of the sensor node.
### Integrated Protection Features
To ensure the reliability and safety of the system, the TPS61151 series is equipped with several integrated protection features. These include over - current protection (OCP), over - voltage protection (OVP), and thermal shutdown. Over - current protection limits the output current to a safe level, preventing damage to the load and the converter itself. Over - voltage protection ensures that the output voltage does not exceed a predefined threshold, protecting sensitive components from voltage spikes. Thermal shutdown automatically turns off the converter when the temperature exceeds a safe operating limit, preventing overheating and potential damage to the device.
## 3. Applications
### Portable Electronic Devices
The TPS61151 series is widely used in portable electronic devices such as smartphones, tablets, and portable media players. In these devices, it is used to boost the battery voltage to a level suitable for powering the display, audio amplifier, and other high - voltage components. For example, in a smartphone, the TPS61151 can be used to power the OLED display, which requires a higher voltage than the battery can provide directly.
### LED Lighting Systems
Images for reference
10-SON DRC,DSC
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