| Allicdata Part #: | SC4541ULTRT-ND |
| Manufacturer Part#: |
SC4541ULTRT |
| Price: | $ 0.36 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Semtech Corporation |
| Short Description: | IC LED DRIVER RGLTR DIM 6MLPD |
| More Detail: | LED Driver IC 1 Output DC DC Regulator Step-Down (... |
| DataSheet: |  SC4541ULTRT Datasheet/PDF |
| Quantity: | 1000 |
| 3000 +: | $ 0.33516 |
Specifications
| Voltage - Output: | 25V |
| Supplier Device Package: | 6-MLPD-UT (2x2) |
| Package / Case: | 6-UFDFN Exposed Pad |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 85°C (TA) |
| Applications: | Backlight |
| Dimming: | PWM |
| Frequency: | 2MHz |
| Current - Output / Channel: | 450mA (Switch) |
| Series: | -- |
| Voltage - Supply (Max): | 22V |
| Voltage - Supply (Min): | 2.9V |
| Number of Outputs: | 1 |
| Internal Switch(s): | Yes |
| Topology: | Step-Down (Buck), Step-Up (Boost) |
| Type: | DC DC Regulator |
| Part Status: | Active |
| Packaging: | Tape & Reel (TR) |
Description
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SC4541ULTRT is an integrated circuit, a product of Power Management Integrated Circuit (PMIC) - which is used to drive LEDs. It is designed to operate with an input power of 4.5V to 18V. This IC provides dimming and color control through the use of PWM signals. It also has programmable features to control the current flowing through the LED, allowing users to adjust the brightness and color to suit their specific needs.The application field of SC4541ULTRT includes automotive applications such as interior, headlamps, and ambient lighting. Automotive engineers use this integrated circuit to control the brightness and color of LEDs to create a certain mood or atmosphere inside the vehicle. Moreover, it is also used in applications such as LED 2.4G backlight and LED TV for various display functionalities.The working principle of SC4541ULTRT is based on a 2-stage charge pump DCDC converter and a 4-level switch-mode buck current regulator. It works in two stages, first the Boost PWM stage and then the Buck PWM stage. The Boost stage transfers power from the input to the output and the Buck stage regulates the current of the LEDs.The Boost PWM stage charges the input capacitor to a high voltage and then uses a PWM signal to control the output current and brightness. The Buck PWM stage works as a DCDC buck converter to regulate the current and provides power to the LEDs. The 4-level switch-mode current regulator regulates the maximum current in the LEDs to prevent the device from overheating. The unique features of SC4541ULTRT come into play when combined with the output current regulation features of the device. It can sense the voltage drop across the LED and adjusts the output current automatically, avoiding any current overshoot and fault condition. Additionally, it also provides Fast Soft Dimming for dimmable LEDs and Flicker-Free Dimming for constant flicker free lighting. Overall, the SC4541ULTRT from Power Management Integrated Circuit (PMIC) is an ideal choice for automotive and consumer display applications, as it provides users with superior control to adjust the brightness and color of LEDs according to their individual requirements.
The specific data is subject to PDF, and the above content is for reference
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