Allicdata Part #: | TPS92518HVPWPR-ND |
Manufacturer Part#: |
TPS92518HVPWPR |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | DUAL CONSTANT-OFF TIME BUCK CONT |
More Detail: | LED Driver IC 2 Output DC DC Controller Step-Down ... |
DataSheet: | TPS92518HVPWPR Datasheet/PDF |
Quantity: | 1000 |
Voltage - Output: | -- |
Supplier Device Package: | 24-HTSSOP |
Package / Case: | 24-TSSOP (0.173", 4.40mm Width) Exposed Pad |
Mounting Type: | Surface Mount |
Operating Temperature: | -40°C ~ 125°C (TA) |
Applications: | LED Lighting |
Dimming: | Analog, PWM |
Frequency: | 2MHz |
Current - Output / Channel: | -- |
Series: | -- |
Voltage - Supply (Max): | 65V |
Voltage - Supply (Min): | 6.5V |
Number of Outputs: | 2 |
Internal Switch(s): | No |
Topology: | Step-Down (Buck) |
Type: | DC DC Controller |
Part Status: | Active |
Packaging: | Tape & Reel (TR) |
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The TPS92518HVPWPR is a high voltage, low power PMIC – LED driver. It is designed to drive one or two strings of LEDs from a single line source in an efficient and cost effective way. The TPS92518HVPWPR is capable of driving up to two LED strings with up to 500mA maximum LED current per string. It has an adjustable LED current for each LED string and an adjustable dimming range between 0V and -3.3V. This device has been designed with an integrated voltage regulator for the positive and negative supply rail, an open-drain output voltage limited to -2.0V, and an overvoltage protection circuit.
The TPS92518HVPWPR application field includes backlighting and general enabling applications, while the working principle of this device is to power-up the LEDs and control the brightness by varying the output current. The device achieves this by providing a single-ended input to the control pin on the chip. When the PWM signal is low, the LED current is pulled down to the minimum current level, and when the PWM signal is high, the LED current is increased to its maximum level. The device is designed to be used with a 3.3V logic control signal and can accept various types of PWM modulation. This device is capable of providing dimming curves of linear and logarithmic output at 0-100% dimming range.
The TPS92518HVPWPR LED driver utilizes a unique dimming technique that adjusts the LED current level with the part-to-part variation of LED characteristics. To take advantage of this technology, the IC also features an overvoltage protection circuit and input undervoltage protection. The overvoltage protection will shut down the LED current if the device senses an overvoltage situation. Similarly, the IC’s input undervoltage protection monitors the input supply voltage to prevent potential damage to the driver or LEDs. As a result, the TPS92518HVPWPR is well-suited for lighting applications where high current LEDs are used.
The TPS92518HVPWPR is easy to configure and provides flexibility in dimming control. It comes with an adjustable current limit that can select the correct current level for the target LED. The output has been designed to minimize the power dissipation so that it is low power, yet powerful enough to drive up to two strings of LEDs with up to 500mA maximum LED current per string. It also has a thermal overload protection that shuts down the output to protect both the IC and the LEDs. The device is compact, able to fit into small PCB assemblies, and is provided with a 0.5mm-pitch, four-pin DFN package.
The TPS92518HVPWPR is a high voltage, low power PMIC – LED driver that is designed to provide efficient and cost effective lighting solutions. It can power up to two LED strings with up to 500mA maximum LED current, and features adjustable current levels, an adjustable dimming range, an integrated voltage regulator, over voltage protection and input undervoltage protection. This device is well-suited for lighting applications such as backlighting, and general enabling. The TPS92518HVPWPR LED driver is available in a small 0.5mm-pitch, four-pin DFN package, making it a perfect solution for space-constrained products.
The specific data is subject to PDF, and the above content is for reference
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