AS1112B-BQFT vs LM3431QMHX/NOPB
| Part Number |
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| Category | PMIC - LED Drivers | PMIC - LED Drivers |
| Manufacturer | ams | Texas Instruments |
| Description | IC LED DRIVER LIN 100MA 32TQFN | IC LED DRIVER CTRLR DIM 28HTSSOP |
| Package | -Reel® | Tape & Reel (TR) |
| Series | - | Automotive, AEC-Q100 |
| Type | Linear | DC DC Controller |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 32-VFQFN Exposed Pad | 28-PowerTSSOP (0.173\", 4.40mm Width) |
| Supplier Device Package | 32-TQFN (5x5) | 28-HTSSOP |
| Topology | Shift Register | Step-Up (Boost) |
| Applications | Backlight, Signage | Backlight |
| Number of Outputs | 16 | 3 |
| Voltage - Output | 15V | - |
| Frequency | 30MHz | 1MHz |
| Current - Output / Channel | 100mA | - |
| Internal Switch(s) | Yes | No |
| Dimming | - | Analog, PWM |
| Voltage - Supply (Max) | 5.5V | 36V |
| Voltage - Supply (Min) | 3V | 4.5V |
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1. What is an LED driver for?
The main role of LED drivers is to provide a stable operating current for LEDs. Since LEDs are very sensitive to current, too high a current can cause them to be damaged or their lifespan to be shortened, while too low a current cannot guarantee brightness. Therefore, a suitable driver can ensure that the LED works under safe and efficient conditions.
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2. 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.
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3. 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.
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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.
