ZXLD1356DACTC Diodes Zetex, ZXLD1356DACTC Datasheet
ZXLD1356DACTC
Specifications of ZXLD1356DACTC
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ZXLD1356DACTC Summary of contents
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Description The ZXLD1356 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 4.7μF Adj 3 1.25V Gnd 2 Figure 1. Block diagram – Pin connections shown for TSOT23-5 package Name TSOT23-5 DFN3030 Drain of NDMOS switch GND Ground (0V) Multi-function On/Off ...
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Absolute Maximum Ratings Symbol Parameter V Input Voltage Voltage SENSE SENSE V LX Output Voltage LX V Adjust Pin Input Voltage ADJ I Switch Output Current LX Power Dissipation P (Refer to Package thermal de-rating curve on ...
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Electrical Characteristics (Test conditions: V Symbol Parameter V Internal regulator start-up threshold SU V Internal regulator shutdown threshold SD I Quiescent supply current with output off INQoff Quiescent supply current with output switching I INQon (Note 3) Mean current sense ...
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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 voltage SENSE voltage Coil ...
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Device Description (Continued) Switching thresholds With the ratios of R1, R2 and R3 define an average V ADJ REF pin with respect The average output current 200mV/R OUTnom S ...
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Actual operating waveforms [V =15V Normal operation. Output current (Ch3) and LX voltage (Ch2) Actual operating waveforms [V =30V Normal operation. Output current (Ch3) and LX voltage (Ch2) Actual operating waveforms [V =60V Normal ...
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Typical Operating Conditions 0.640 0.620 0.600 0.580 0.560 0.540 0.520 0.500 0 1 LED 10 -2% -4% -6% -8% -10 LED 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% ...
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Typical Operating Conditions 700 600 500 400 300 200 100 LED 100 LED ZXLD1356 Document number: DS33470 Rev (Cont.) ZXLD1356 Switching ...
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Typical Operating Conditions 0.640 0.620 0.600 0.580 0.560 0.540 0.520 0.500 0 1 LED 10 -2% -4% -6% -8% -10 LED 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% ...
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Typical Operating Conditions 700 600 500 400 300 200 100 LED 100 LED ZXLD1356 Document number: DS33470 Rev (Cont.) ZXLD1356 Switching ...
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Typical Operating Conditions 0.640 0.620 0.600 0.580 0.560 0.540 0.520 0.500 0 1 LED 10 -2% -4% -6% -8% -10 LED 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% ...
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Typical Operating Conditions 700 600 500 400 300 200 100 LED 100 LED ZXLD1356 Document number: DS33470 Rev (Cont.) ZXLD1356 ...
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Typical Operating Conditions 0.640 0.620 0.600 0.580 0.560 0.540 0.520 0.500 0 1 LED 10 -2% -4% -6% -8% -10 LED 100% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% ...
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Typical Operating Conditions 700 600 500 400 300 200 100 LED 100 LED 3 LEDs ZXLD1356 Document number: DS33470 Rev ...
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Typical Operating Conditions 600 500 400 300 200 100 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 2.5 2 1 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 ZXLD1356 Document number: DS33470 Rev ...
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Application Information Setting nominal average output current with external resistor R The nominal average output current in the LED(s) is determined by the value of the external current sense resistor (R connected between V and I and is given by: ...
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Application Information (Continued) Output Current Adjustment by PWM Control Directly driving ADJ input A Pulse Width Modulated (PWM) signal with duty cycle D current to a value above or below the nominal average value set by resistor R PWM ...
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Application Information (Continued) 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 ...
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Application Information (Continued) V Capacitor Selection IN 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 ...
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Application Information (Continued) Inductor Selection Recommended inductor values for the ZXLD1356 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 ...
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Application Information (Continued) 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, ...
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Application Information (Continued) Thermal considerations When operating the device at high ambient temperatures, or when driving maximum load current, care must be taken to avoid exceeding the package power dissipation limits. The graph below gives details for power derating. This ...
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Application information (Continued) Layout Considerations LX pin The LX pin of the device is a fast switching node, so PCB tracks should be kept as short as possible. To minimize ground 'bounce', the ground pin of the device should be ...
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Application Information (Continued) Dimming Output Current Using PWM Low frequency PWM mode When the ADJ pin is driven with a low frequency PWM signal (eg 100Hz), with a high level voltage VADJ and a low level of zero, the output ...
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... Ordering Information Part Package Device mark Code ZXLD1356DACTC 1356 DAC ZXLD1356ET5TA 1356 ET5 Package Outline Dimensions TSOT23-5 ZXLD1356 Document number: DS33470 Rev Reel size Reel width Packaging (inches) (mm) (Note 4) DFN3030 TSOT23 www.diodes.com A Product Line of Diodes Incorporated ZXLD1356 Part Quantity per reel ...
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Package Outline Dimensions DFN3030-6 PIN 1 DOT BY MARKING SIDE VIEW Millimeters Inches DIM Min. Max. Min. A 0.700 0.800 0.0275 A1 0.000 0.050 0.000 A3 0.203 REF 0.008 b 0.300 0.400 0.0118 D 2.950 3.050 0.116 ZXLD1356 Document number: ...
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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 ...