LT3491EDC#TRPBF vs MP4651ES-LF-Z
| Part Number |
|
|
| Category | PMIC - LED Drivers | PMIC - LED Drivers |
| Manufacturer | Analog Devices Inc. | Monolithic Power Systems Inc. |
| Description | IC LED DRVR RGLTR DIM 260MA 6DFN | IC LED DRIVER |
| Package | Tube | Tray |
| Series | - | - |
| Type | DC DC Regulator | AC DC Offline Switcher |
| Operating Temperature | -40°C ~ 85°C (TA) | -20°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 6-WFDFN Exposed Pad | 16-SOIC (0.154\", 3.90mm Width) |
| Supplier Device Package | 6-DFN (2x2) | 16-SOIC |
| Topology | Step-Up (Boost) | Half-Bridge |
| Applications | Backlight | Backlight, Lighting |
| Number of Outputs | 1 | 1 |
| Voltage - Output | 27V | - |
| Frequency | 2.3MHz | 50kHz |
| Current - Output / Channel | 260mA (Switch) | - |
| Internal Switch(s) | Yes | No |
| Dimming | PWM | PWM |
| Voltage - Supply (Max) | 12V | 30V |
| Voltage - Supply (Min) | 2.5V | 9V |
-
1. Is an LED driver just a power supply?
Not exactly. Although the LED driver does provide power, it is more than just a simple power converter. It also contains complex circuits to accurately control the output voltage and current, and sometimes includes dimming, temperature protection and other functions.
-
2. Can I run an LED without a driver?
Yes, but additional circuits (such as resistors) are required to limit the current. However, this method is less efficient and difficult to maintain a stable current, which may lead to poor LED performance or shortened life.
-
3. Why do I need to program an LED driver?
Programming is usually for advanced drivers with programmable functions, such as achieving finer dimming control, color adjustment or other intelligent functions. This allows users to customize the behavior of the driver according to specific needs.
-
4. Does an LED strip require an LED driver?
Yes, LED strips usually require a suitable driver to provide the correct voltage and current. Especially for long strips, because they are often composed of multiple small LEDs in series or parallel.
