RT4533GJ6 vs LM3644YFFR
| Part Number |
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| Category | PMIC - LED Drivers | PMIC - LED Drivers |
| Manufacturer | Richtek USA Inc. | Texas Instruments |
| Description | IC ASYN BOOST TSOT-23-6 | IC LED DRIVER RGLTR DIM 12DSBGA |
| Package | -Reel® | Tape & Reel (TR) |
| Series | - | - |
| Type | DC DC Regulator | DC DC Regulator |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | SOT-23-6 Thin, TSOT-23-6 | 12-UFBGA, DSBGA |
| Supplier Device Package | TSOT-23-6 | 12-DSBGA |
| Topology | Step-Up (Boost) | Step-Up (Boost) |
| Applications | Backlight | Camera Flash |
| Number of Outputs | 1 | 2 |
| Voltage - Output | 36.5V | - |
| Frequency | 1.1MHz | 2MHz, 4MHz |
| Current - Output / Channel | 1.2A (Switch) | 1.5A |
| Internal Switch(s) | Yes | Yes |
| Dimming | PWM | I²C |
| Voltage - Supply (Max) | 5.5V | 5.5V |
| Voltage - Supply (Min) | 2.5V | 2.5V |
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1. What is the difference between an LED driver and a ballast?
LED drivers: Designed specifically for LEDs, they are usually used to adjust the output current to meet the requirements of LEDs.
Ballasts: Traditionally used for fluorescent lamps or other gas discharge lamps, they control the high voltage at startup and limit the operating current. Although some modern electronic ballasts can also provide constant current, their original design and application areas are different from LED drivers. -
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. Do all LED lights need a driver?
Not all LED lights require independent drivers. Some small or integrated LED lamps may already have built-in driver circuits. However, for most high-power LEDs or applications that require specific current control, using a dedicated driver is very necessary.
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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.
