TPS75100YFFT vs LP8501TMX/NOPB
| Part Number |
|
|
| Category | PMIC - LED Drivers | PMIC - LED Drivers |
| Manufacturer | Texas Instruments | National Semiconductor |
| Description | IC LED DRVR LIN DIM 25MA 9DSBGA | LP8501 MULTI-PURPOSE 9-OUTPUT LE |
| Package | -Reel® | Bulk |
| Series | - | - |
| Type | Linear | DC DC Regulator |
| Operating Temperature | -40°C ~ 85°C (TJ) | -30°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 9-UFBGA, DSBGA | 25-WFBGA |
| Supplier Device Package | 9-DSBGA | 25-uSMD |
| Topology | - | Switched Capacitor (Charge Pump) |
| Applications | Backlight | Backlight |
| Number of Outputs | 4 | 9 |
| Voltage - Output | - | 4.5V |
| Frequency | - | 1.25MHz |
| Current - Output / Channel | 25mA | 25.5mA |
| Internal Switch(s) | Yes | Yes |
| Dimming | PWM | PWM |
| Voltage - Supply (Max) | 5.5V | 5.5V |
| Voltage - Supply (Min) | 2.7V | 2.7V |
-
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. How can I tell if an LED driver is broken?
If the LED does not light up or the brightness drops significantly.
The driver is heating abnormally.
There is a distinct burnt smell.
Measure the input and output voltage/current and it does not meet the specification.
Test the status of its internal components through professional equipment. -
3. 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.
-
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.
