ZXLD1320DCATC Diodes Zetex, ZXLD1320DCATC Datasheet
ZXLD1320DCATC
Specifications of ZXLD1320DCATC
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ZXLD1320DCATC Summary of contents
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ZXLD1320 Buck mode DC-DC converter for LED driving with 1.5A output and current control Description The ZXLD1320 is an inductive converter, with an internal switch, designed for driving single or multiple LEDs in series total of 1.5A ...
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Pin connections (top-view) Package 14-Pin DFN with exposed pad 4mm x 3mm 0.50mm pitch 1.5W @T =70°C A Block diagram Issue 1 - January 2008 © Zetex Semiconductors plc 2008 Package view DFN14 Package (bottom view). 45° chamfer denotes Pin ...
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Absolute maximum ratings (Voltages relative to GND unless otherwise stated) Operating temperature (Top) Storage temperature (Tst) Junction temperature (Tj) Package power dissipation (Ptot) DFN-14 with Exposed Pad: 4mmx3mm, 0.5mm Pitch DC-DC Converter Supply voltage (VIN) POK ADJ CFB ISENSE TADJ ...
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Pin description Name Pin Description # ADJ 1 Adjust input • Leave floating, or connect to VREF to set 100% output current. • Drive with dc voltage. (50mV<VADJ< VREF) to adjust output current • Drive with low frequency (200Hz) PWM ...
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Electrical characteristics ( DC-DC converter supply parameters Symbol Parameter V Supply voltage IN Iq Quiescent current I Standby current STBY V Internal reference voltage REF T Internal reference temperature CO(REF) coefficient. NOTES: (a) Production testing of the device is performed ...
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DC-DC converter output parameters Symbol Parameter Toff(100) Discharge pulse width Toff(10) Discharge pulse width f Maximum operating LXmax frequency V POK flag high level output OH(POK) voltage V POK flag low level output OL(POK) voltage T POK assertion delay time ...
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High-side current monitor Symbol Parameter V Supply voltage MVIN V Sense voltage MON I Input current M_LOAD TCO Temperature coefficient (MON) BW Bandwidth Gm Transconductance Iout/ VMON Acc Accuracy Reference current monitor Symbol Parameter V Adjust voltage ADJ TCO Temperature ...
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... OUT output current V IN Eff (e) Efficiency NOTES: (e) System parameter only. This value is dependent upon external components and circuit configuration. Ordering information Device Reel size (mm) ZXLD1320DCATC 33.02 Issue 1 - January 2008 © Zetex Semiconductors plc 2008 Conditions V >4V IN 4V<VIN<18V, Iout=1A, V =100mV, ADJ 4V<VIN<18V, ...
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Device description The ZXLD1320 is a buck mode inductive DC-DC converter, with an internal switch, designed for driving single or multiple LEDs in series total of 1.5A output current. Depending upon supply voltage (VIN), LED forward voltage ...
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ADJ pin The ADJ pin is connected to the internal 500mV reference (VREF) via a 100k resistor. This biases the ADJ pin to the reference voltage and defines nominal 100% LED current. The ADJ pin can be overdriven with an ...
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Application notes Setting peak coil current The peak current in the coil is set by the resistor (Rsense) between the switch emitter and ground according SWpeak Rsense The minimum peak current will depend on operating ...
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PWM control A wider dimming range can be achieved by applying a PWM control signal to the ADJ pin to turn the device on and off, giving an average output current proportional to the duty cycle of the control signal. ...
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Thermal compensation of LED current High-luminance LEDs often need to be supplied with a temperature compensated current in order to maintain stable and reliable operation at high temperatures. This is usually achieved by reducing the LED current proportionally from its ...
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Typical operating conditions Inductive converters can operate in either CONTINUOUS mode, where current always flows in the inductor, but rises during the ON period and falls during the OFF period, or DISCONTINUOUS mode, where the current falls to zero during ...
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LED(s). At this point the transistor switches off and the coil current continues to flow in the LED(s) via Schottky diode D1. The LED current is sensed by R3 and the controller varies this until ...
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Additional notes Note that the ON time is set by the time it takes the coil to reach the peak current. This peak value is reduced by the control loop to give the desired LED power, so the ON time ...
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Package outline - TDFN1443 60.3938 E PIN 1 DOT BY MARKING DIM Inches Min Max A 0.0276 0.0315 A1 0.00 0.002 A3 0.008 REF. b 0.0079 0.0118 D 0.1555 0.1594 Note: Controlling dimensions are in millimeters. Approximate dimensions are provided ...
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Definitions Product change Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or service. Customers are solely responsible for obtaining the latest relevant information before placing orders. Applications disclaimer The ...