| Allicdata Part #: | 1287-AAT3172IWP-T1-CHP |
| Manufacturer Part#: |
AAT3172IWP-T1 |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Skyworks Solutions Inc. |
| Short Description: | IC LED DRIVER RGLTR 300MA 12TDFN |
| More Detail: | LED Driver IC 2 Output DC DC Regulator Switched Ca... |
| DataSheet: |  AAT3172IWP-T1 Datasheet/PDF |
| Quantity: | 19500 |
Specifications
| Number of Outputs: | 2 |
| Voltage - Supply (Min): | 2.7V |
| Voltage - Supply (Max): | 5.5V |
| Voltage - Output: | 5.5V |
| Current - Output / Channel: | 300mA (Flash) |
| Frequency: | 1MHz |
| Dimming: | -- |
| Applications: | Camera Flash |
| Operating Temperature: | -40°C ~ 85°C (TA) |
| Mounting Type: | Surface Mount |
| Package / Case: | 12-WFDFN Exposed Pad |
| Supplier Device Package: | 12-TDFN (3x3) |
| Series: | -- |
| Packaging: | Tape & Reel (TR) |
| Part Status: | Obsolete |
| Type: | DC DC Regulator |
| Topology: | Switched Capacitor (Charge Pump) |
| Internal Switch(s): | Yes |
Description
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PMIC - LED Drivers - AAT3172IWP-T1 application field and working principle
AAT3172IWP-T1 is an integrated Power Management Unit (PMU) designed specifically for driving large strings of high-brightness LEDs efficiently. The small size, low voltage and few external components requirement make it an ideal choice for high-brightness LED (HB LED) backlighting application in LCD display. It utilizes high performance switching regulator controlled by digital signal processor (DSP) to deliver high current and high accuracy LED current and also has high resolution dimming capability. In this article, we will discuss the application field and working principle of AAT3172IWP-T1 Power Management Unit.
Application Field
The AAT3172IWP-T1 Power Management Unit is specifically designed for outdoor general illumination & backlighting of LCD displays used in various applications such as automotive displays, phones, TVs, computers, and other consumer electronic products. It\'s a tiny chip solution with few external parts, which makes it an ideal choice for high-brightness LED backlighting.
Working Principle
The AAT3172IWP-T1 PMU is based on a switched-mode power supply topology, utilizing a high-speed switching regulator controlled by a digital signal processor (DSP). The switching regulator is a voltage-mode controlled buck converter with a digital minimum on-time (MOT) modulated supply voltage. The controller is designed to optimize efficiency, as well as ensure minimum audible noise.
The AAT3172IWP-T1 PMU features a wide input voltage range and a high load current capability to drive the LED strings. The maximum LED string current is regulated with a linear current regulator, which provides a very high accuracy output current control. The LED string current is further regulated by a multi-level dimming function, which allows for very fine adjustments of LED current. The LED current is set by utilizing two external resistor values.
The voltage regulator included in the AAT3172IWP-T1 PMU is protected against various overcurrent, overvoltage and overtemperature conditions. The device also includes a number of protection circuitry for output overcurrent and overvoltage, as well as input overvoltage protection. It also has short-circuit and over-temperature protection. The entire system is controlled by a digital signal processor (DSP) that provides a highly efficient and low noise control.
The AAT3172IWP-T1 PMU has an ideal combination of features and performance. Its high load current capability, few external components requirement and wide input voltage range make it an ideal choice for high-brightness LED (HB LED) backlighting application in LCD displays.
In conclusion, the AAT3172IWP-T1 PMU is a highly efficient and cost-effective solution for driving large strings of high-brightness LEDs in various applications. Its small size, low voltage and few external components requirement make it an ideal choice for high-brightness LED (HB LED) backlighting application in LCD displays. Furthermore, the built-in protection circuitry provides overcurrent, overvoltage and overtemperature protection, as well as short-circuit protection. It\'s a highly efficient and low noise solution for power management.
The specific data is subject to PDF, and the above content is for reference
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