ZXLD1366_10 DIODES [Diodes Incorporated], ZXLD1366_10 Datasheet

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Description The ZXLD1366 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 6V and 60V ...

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Block Diagram 4.7mF Adj 3 R4 50K D1 1.25V Gnd 2 Figure 1 Pin connection for TSOT23-5 package Pin Description Name TSOT23-5 DFN3030-6 SO8- GND ADJ 3 ...

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Absolute Maximum Ratings Symbol Input Voltage Voltage V SENSE SENSE LX Output Voltage V LX Adjust Pin Input Voltage V ADJ Switch Output Current I LX Power Dissipation P TOT (Refer to Package thermal de-rating curve on ...

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Electrical Characteristics (Test conditions: V Symbol Parameter DC voltage on ADJ pin to switch device from quiescent (off) state to active (on) V ADJon state R Resistance between ADJ pin and V ADJ Continuous LX switch current I LXmean LX ...

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Device Description The device, in conjunction with the coil (L1) and current sense resistor (R converter. Device operation (refer to Figure 1 - Block diagram and Figure 2 Operating waveforms) Operation can be best understood by assuming that the ADJ ...

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voltage SENSE voltage Coil current 0V 0.15V Comparator V input voltage ADJ 5V Comparator output 0V Figure 2 Theoretical Operating Waveforms ZXLD1366 Document number: DS31992 Rev Toff Ton 230mV 170mV ADJ ...

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Actual operating waveforms [V IN Normal operation. Output current (Ch3) and LX voltage (Ch2) Actual operating waveforms [V IN Normal operation. Output current (Ch3) and LX voltage (Ch2) Actual operating waveforms [V IN Normal operation. Output current (Ch3) and LX ...

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Typical Operating Conditions 1.100 01 LEDs 03 LEDs 1.080 05 LEDs 07 LEDs 09 LEDs 11 LEDs 1.060 13 LEDs 15 LEDs 1.040 1.020 1.000 0.980 LEDs -2% 03 LEDs 05 ...

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Typical Operating Conditions 500 450 01 LEDs 03 LEDs 400 05 LEDs 07 LEDs 350 09 LEDs 11 LEDs 300 13 LEDs 15 LEDs 250 200 150 100 100% 90% 80% 70% 60% 50% 01 LEDs ...

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Typical Operating Conditions 1.100 01 LEDs 03 LEDs 1.080 05 LEDs 07 LEDs 09 LEDs 1.060 11 LEDs 13 LEDs 15 LEDs 1.040 1.020 1.000 0.980 0.960 LEDs -2% 03 LEDs ...

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Typical Operating Conditions 500 450 01 LEDs 03 LEDs 400 05 LEDs 07 LEDs 350 09 LEDs 11 LEDs 300 13 LEDs 15 LEDs 250 200 150 100 100% 90% 80% 70% 60% 50% 01 LEDs ...

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Typical Operating Conditions 1.100 01 LEDs 03 LEDs 1.080 05 LEDs 07 LEDs 09 LEDs 1.060 11 LEDs 13 LEDs 15 LEDs 1.040 1.020 1.000 0.980 LEDs -2% 03 LEDs 05 ...

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Typical Operating Conditions 500 450 01 LEDs 03 LEDs 400 05 LEDs 07 LEDs 350 09 LEDs 11 LEDs 300 13 LEDs 15 LEDs 250 200 150 100 100% 90% 80% 70% 60% 50% 01 LEDs ...

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Typical Operating Conditions 1.100 01 LEDs 1.080 03 LEDs 05 LEDs 07 LEDs 09 LEDs 1.060 11 LEDs 13 LEDs 15 LEDs 1.040 1.020 1.000 0.980 0 10 LEDs -2% 03 LEDs 05 LEDs ...

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Typical Operating Conditions 500 450 01 LEDs 03 LEDs 400 05 LEDs 07 LEDs 350 09 LEDs 11 LEDs 300 13 LEDs 15 LEDs 250 200 150 100 100% 90% 80% 70% 60% 50% 40% 01 ...

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Typical Operating Conditions 1200 1000 800 600 400 200 0 0 800 700 600 500 400 300 Output transistor not fully enhanced 200 100 0 0 1.243 1.2425 1.242 1.2415 1.241 1.2405 1.24 1.2395 1.239 1.2385 1.238 ...

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Typical Operating Conditions 1.6 1.4 1.2 1 0.8 0.6 0.4 0 1.262 1.26 1.258 1.256 1.254 1.252 1.25 1.248 1.246 1.244 -50 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 -50 ZXLD1366 Document number: DS31992 Rev. ...

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Application Information Setting nominal average output current with external resistor RS The nominal average output current in the LED(s) is determined by the value of the external current sense resistor (RS) connected between VIN and ISENSE and is given by: ...

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Output current adjustment by PWM control Directly driving ADJ input A Pulse Width Modulated (PWM) signal with duty cycle DPWM can be applied to the ADJ pin, as shown below, to adjust the output current to a value above or ...

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Shutdown mode Taking the ADJ pin to a voltage below 0.2V for more than approximately 100μs will turn off the output and supply current to a low standby level of 65μA nominal. Note that the ADJ pin is not a ...

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VIN capacitor selection A low ESR capacitor should be used for input decoupling, as the ESR of this capacitor appears in series with the supply source impedance and lowers overall efficiency. This capacitor has to supply the relatively high peak ...

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Inductor selection Recommended inductor values for the ZXLD1366 are in the range 68 μH to 220 μH. Higher values of inductance are recommended at higher supply voltages in order to minimize errors due to switching delays, which result in increased ...

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Figure 4 ZXLD1366 Minimum recommended inductor (DFN3030-6) ZXLD1366Q SO-8-EP Minimum Recommended Inductor 12 Legend 11 47µH 10 68µH 100µH 9 150µH 8 220µ 0.00 5.00 10.00 Figure 5 ZXLD1366 Minimum recommended inductor (SO-8-EP) ...

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Diode Selection For maximum efficiency and performance, the rectifier (D1) should be a fast low capacitance Schottky diode* with low reverse leakage at the maximum operating voltage and temperature. They also provide better efficiency than silicon diodes, due to a ...

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Operation at low supply voltage Below the under-voltage lockout threshold (V with excessive on-resistance of the output transistor. The output transistor is not full enhanced until the supply voltage exceeds approximately 17V. At supply voltages between V dissipation due to ...

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In order to maximize the thermal capabilities of the DFN3030-6 and the SO-8-EP packages thermal vias should be incorporated into the PCB. See figures 7 and 8 for examples used in the ZXLD1366 evaluation boards. Figure 7 Suggested layout for ...

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Thermal compensation of output current High luminance LEDs often need to be supplied with a temperature compensated current in order to maintain stable and reliable operation at all drive levels. The LEDs are usually mounted remotely from the device so, ...

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Evaluation PCB ZXLD1366 evaluation boards are available on request. Terminals allow for interfacing to customers own LED products. Dimming output current using PWM Low frequency PWM mode When the ADJ pin is driven with a low frequency PWM signal (eg ...

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Ordering Information Device Package ZXLD1366ET5TA TSOT23-5 ZXLD1366DACTC DFN3030-6 ZXLD1366EN8TC SO-8-EP Package Outline Dimensions TSOT23-5 Millimeters Dim. Min. Max. Min 1.00 A1 0.01 0.10 0.0003 A2 0.84 0.90 0.0330 b 0.30 0.45 0.0118 C 0.12 0.20 0.0047 D 2.90 ...

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Package Outline Dimensions DFN3030-6 D PIN 1 DOT BY MARKING TOP VIEW SIDE VIEW Millimeters DIM Min. Max. Min. A 0.700 0.800 0.0275 A1 0.000 0.050 0.000 A3 0.203 REF b 0.300 0.400 0.0118 D 2.950 3.050 0.116 ZXLD1366 Document ...

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Package Outline Dimensions SO-8-EP ZXLD1366 Document number: DS31992 Rev Product Line of Diodes Incorporated www.diodes.com ZXLD1366 June 2010 © Diodes Incorporated ...

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DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY ...