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Unfortunately, only a few customers devote their time to read an instruction of Zetex Semiconductors PLC zxld1350ev2. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
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First and foremost, an user manual of Zetex Semiconductors PLC zxld1350ev2 should contain:
- informations concerning technical data of Zetex Semiconductors PLC zxld1350ev2
- name of the manufacturer and a year of construction of the Zetex Semiconductors PLC zxld1350ev2 item
- rules of operation, control and maintenance of the Zetex Semiconductors PLC zxld1350ev2 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Zetex Semiconductors PLC zxld1350ev2 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Zetex Semiconductors PLC zxld1350ev2, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Zetex Semiconductors PLC service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Zetex Semiconductors PLC zxld1350ev2.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Zetex Semiconductors PLC zxld1350ev2 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 ZXLD1350EV2 EVALUATION BOARD US ER GUIDE DESCRIPTION The ZXLD1350EV2, Figure 1, is an evaluation board for ev aluatin g the ZXLD1350 350mA LED driver with internal switch. The evaluation bo ard can be used to drive 1, 2 or 3 one-watt LEDs, or an external cho ice of LEDs. The number of external conne[...]
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Page 2
ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 ZXLD1350 DEVICE DESCRIPTION The ZXLD1350 is a contin uous mode inductive driver in a TSOT23-5 packag e, for driving one or m ore series connected LEDs efficientl y from a voltage source higher than the LE D voltage. T he device includ es the output switch and a current sense c ircuit, which requires[...]
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Page 3
ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 ZXLD1350EV2 EV ALUATION BO ARD REFERENCE DESIGN The ZXLD1350EV2 is config ured to the reference design in Figure 2. The target appli cat ion is a driver for one or more series-connected 1W white LEDs for torches and other high po wered LED driving applications. The operating voltage is a nomi nal 24[...]
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ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 ZXLD1350EV2 Evaluation Board . Ref Value Package Part Number Manufacturer Notes R S 0.33R 1%,200ppm 0805 NCST10FR330FT RF NIC components R1,R2 Not fitted 0805 Not fitted C1,C2 1uF, 50V 1206 50V, 1206 X7R NMC1206X7R105K50F NIC components C3 Not fitted 0805 Not fitted L1 100uH NPIS53D101MT RF NIC comp[...]
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Page 5
ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 U1 +V I N GN D AD J Z X L D1 3 5 0 E V 2 E V AL UAT IO N BO ARD Bar e boar d: Z DB308R3 L1 SD1 JP 2 C3 Copyr ight Z et ex P lc 2006 a k a k a k R1 JP 3 JP 1 LE D a LE D k RS C1 C2 R2 I n pa rtne r shi p wi th: D1 D2 D3 1 J1 Figure 4: Top View Figure 5: Bottom View ZXLD1350EV2 Connection Point Defini[...]
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ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 OTHER FEATURES Dimming The ZXLD1350 provides three dimming options: DC, high-frequ enc y PWM, and low-frequency PW M dimming. DC Voltage Dimming 1. Switch off the power supply. 2. Solder a link across R1 pads. 3. Fit a 10nF capacitor at C3 to decouple the pin. 4. Drive the ADJ pin on the board with [...]
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ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 Low Frequency PWM Dimming 1. Switch off the power supply. 2. Solder a link across R1 pads. 3. Make sure C3 is not fitted. 4. Connect a PWM signa l to the ADJ pin via an open co llector NPN transi stor or an open drain N-channe l MOSFET. 5. Alternatively, drive the ADJ p in directly with a PWM signal[...]
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ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 PERFORMANCE The system efficiency depend s on the sense resistor, suppl y voltage, s witching inductor and the numb er of 1W LEDs connected in series. The graph belo w shows the efficiency with a 0.33 Ω sense resistor R S, and a 100u H inductor, for 1 to 3 series connected 1W LEDs. With a 24V suppl[...]
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ZXLD1350EV2 ZXLD1350EV2 User Guide Iss 5 10-04-07 Definitions Product change Zetex Semiconductors reserves the r ight to alter, withou t notice , spe cifications, design , price or condition s of supply of any product or service. Customers are solely responsible for obtaining the latest r elevant information before placing orders. Applications disc[...]