LM3431QMHX/NOPB vs AS1390B-BSOT
| Part Number |
|
|
| Category | PMIC - LED Drivers | PMIC - LED Drivers |
| Manufacturer | Texas Instruments | ams |
| Description | IC LED DRIVER CTRLR DIM 28HTSSOP | IC LED DRIVER CONTROLLER 16SOIC |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | Automotive, AEC-Q100 | - |
| Type | DC DC Controller | DC DC Controller |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 28-PowerTSSOP (0.173\", 4.40mm Width) | 16-SOIC (0.154\", 3.90mm Width) |
| Supplier Device Package | 28-HTSSOP | 16-SOIC |
| Topology | Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) |
| Applications | Backlight | Backlight |
| Number of Outputs | 3 | 1 |
| Voltage - Output | - | - |
| Frequency | 1MHz | - |
| Current - Output / Channel | - | - |
| Internal Switch(s) | No | No |
| Dimming | Analog, PWM | - |
| Voltage - Supply (Max) | 36V | 30V |
| Voltage - Supply (Min) | 4.5V | 10V |
-
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. Can I use an LED light without a driver?
As mentioned before, in theory yes, but in practice it is strongly recommended to use a proper driver to ensure optimal performance and extend life.
-
4. Are there LED drivers with audio output?
Some high-end LED drivers do have the ability to synchronize with audio signals and change the lighting effects to the rhythm of music. This type of driver is usually used in occasions such as entertainment lighting or stage lighting.
