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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We promise the long terms continuity supply and would never end supply. The part will not switch again until the power is recycled. We do not give refunds, ph4110 memos. Evidence of damage caused by operating outside of specified temperature range.
The output capacitor is required to maintain the DC. Parts tamper ed with by grinding, engraving, drilling, cutting or applying coatings of any kind. Dimming Control There are two different types of dimming control circuits: The PT has multiple features to protect pt1410 from fault conditions including built-in open load protection, cycle-by-cycle current limit, over temperature shutdown, input under voltage control and integrated soft-start.
Selecting the inductor Choose an inductor that does not saturate under the worst-case load transient and startup conditions. The PT will then switch at its maximum duty cycle boosting the output voltage higher and higher. The typical frequency range of the PWM signal should be higher than 20 kHz to avoid the audio noise.
The rated average forward current needs to be equal to py4110 greater than the load current. Ppt4110 the Input Capacitor. PT detects the voltage of SW pin. For most of the applications of the PT, it is recommended to use an inductor of 10uH. In order to have accuracy LED current, precision resistor is preferred.
There are two different types of dimming control. Choose a diode whose maximum. EastRising gives the promise to every customer to every product we sell on this web store.
LED Backlight Driver IC Chip PT in SOT Package
In some cases an LED may fail, which will result in the feedback voltage always being zero. For some applications, the preferred method of. The LEDs operate at either zero or.
The LEDs operate at either zero or full current. Open Circuit Protection when the input voltage exceeds 4. The LED current is controlled by the feedback resistor.
If an item goes out of stock after you order it, we will contact you. The output of PT is equal high level of SW pin pg4110 the forward voltage of the Schottky diode.
LED Backlight Driver IC Chip PT4110 in SOT-89-5 Package
The typical frequency range. We understand you probably worry whether we still offer the display after your long development time. China Resources Powtech Shanghai Limited. Write Your Own Review Only registered users can write reviews. The capacitor can be electrolytic, tantalum or ceramic.
To reduce losses due to diode forward voltage and recovery time, use a Schottky diode. Only registered users can write reviews. Its low mV feedback voltage reduces power loss and improves efficiency. The LED current is. The characteristic of the output capacitor also affects the stability of the regulation control system.
As the DC voltage increases, the. The dimming control using a DC voltage. Choose a diode whose maximum reverse voltage rating is greater than the tp4110 output voltage.
PT4110 Datasheet PDF
An input capacitor is required to supply the AC ripple. Low ESR capacitors are preferred to. Setting the LED current.
Selecting the Output Capacitor. Evidence of mechanical stress to parts including but not limited to. However since it absorbs the input switching current it.