PT High Efficiency White LED Driver. FEATURES. ○ V to V Input Voltage Range. ○ 35V Maximum Step-Up Voltage. ○ <1µA Shutdown Mode. Texas Instruments PT DC DC Converters parts available at DigiKey. 30 Aug The PT is a high efficiency step-up DC/DC converter designed for driving multiple strings of up to eight series-connected white LED from a.
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The part will not switch again until the power is. Stock levels are based on item’s sales p4110. China Resources Powtech Shanghai Limited. For most of the applications of the PT, it is recommended to use an inductor of 10uH.
The feedback reference is mV. Low ESR capacitors are preferred to. In order to have accuracy LED current, precision resistor is preferred. However since it absorbs the input switching current it.
The dimming control using a DC voltage is shown as below. Make sure that the.
Brand new original POWTECH LED driver IC PT4110
PT detects the voltage of SW pin. Datasheet for Backlight Driver Format. The LED current is. An input capacitor is required to supply the AC ripple.
Using a DC Voltage. The typical frequency pr4110 of the PWM signal should be higher than 20 kHz to avoid the audio noise. The PT will then switch at its maximum duty cycle boosting the output voltage higher and higher.
PT4110 Datasheet PDF
Its low mV feedback voltage reduces pg4110 loss and improves efficiency. Open Circuit Protection when the input voltage exceeds 4. Selecting the Input Capacitor.
Only tp4110 users can write reviews. Backorder notices are listed on your shopping cart. However since it absorbs the input switching current it requires an adequate ripple current rating. The PT will then switch at its maximum duty cycle. In order to have accuracy LED current. As the DC voltage increases, the. Use a capacitor with RMS current rating greater than the inductor ripple current.
Choose a diode whose maximum.
As the DC voltage increases, the voltage drop on R2 increases and the voltage drop on R1 decreases. If an item goes out of stock after you order it, we will contact you. Setting the LED current.
The average LED current increases.
PT 데이터시트(PDF) – Sharp Electrionic Components
So you don’t have to worry even your research time is very long. Warranty is void and no repair or replacement is granted under the following conditions:.
Evidence of damage caused by operating outside of specified temperature range. Ph4110, the LED current decreases. Parts tamper ed with by grinding, engraving, drilling, cutting or applying coatings of any kind. Evidence of mechanical stress to parts including but not limited to.
The rated average forward current needs to pt410 equal to or greater than the load pt410. If a product was damaged during shipping or the order is incorrect, you must notify us within 2 days of receipt. The part will not switch again until the power is recycled. Write Your Own Review Only registered users can write reviews.
All products are covered under our limited warranty, which provides all products are free of functional defects for a period of one year from the date of shipment and all products are free of visual defects and missing parts for a period of 30 days from the date of shipment. The rated average forward current needs.
The LED current is controlled by the feedback resistor. Low ESR capacitors are preferred to keep the output voltage ripple to a minimum. The LEDs operate at either zero or. We do not give refunds, credit memos. The output of PT is equal high level of SW pin subtracting the forward voltage of the Schottky diode.