LINEAR TECHNOLOGY LTM8042 LED Driver Module Imiyalelo
DESCRIPTION
Amasekhethi okubonisa 1511A-A kanye ne-1511A-B afaka i-LTM®8042 kanye ne-LTM8042-1, okuyizishayeli ze-LED ze-1A kanye ne-350mA µModule ngokulandelana. Amasekhethi emiboniso ahlanganiswa njengama-boost topology, amukela i-input voltage isuka ku-3V iye ku-30V futhi isekela okukhiphayo kufika ku-32V (bona Ithebula 1). Imvamisa yokushintsha ezenzakalelayo ingu-600kHz ye-DC1511A-A kanye no-950kHz ye-DC1511A-B, kodwa ingalungiswa ngokushintsha inani le-RT. imodi kanye nemodi yebhakhi (isinyathelo-phansi). I-DC1511A ihlanganisa a
I-DC1511A ilungiswa kalula ukuze isekele ezinye izici, okuhlanganisa ukufiphala kwe-PWM, ukufiphala kwe-analog, i-buck-boost P-channel MOSFET edingekayo ukuze kufiphaliswe i-PWM. Iphinikhodi/itheminali ye-RADJtagi-e ilawula ukuphuma kwamanje. VoltagI-e isetshenziswa ngokuqondile kutheminali noma isethwe isihlukanisi esihlanganisa i-RADJ ephikisayo kanye nereferensi ye-8042V yangaphakathi ye-LTM2 kanye nesihlukanisi. Vula i-LED ngaphezulu kwe-voltagUkuvikelwa kwe-e nakho kufakiwe. Xhumana nedatha yedatha ye-LTM8042/LTM8042-1 ukuze uthole ulwazi olwengeziwe mayelana nendlela yokusebenzisa kahle isekethe.
Idizayini files zaleli bhodi lesifunda ziyatholakala ku http://www.linear.com/demo
I-L, LT, LTC, LTM, µModule, Linear Technology kanye nelogo ye-Linear izimpawu zokuthengisa ezibhalisiwe ze-Linear Technology Corporation. Zonke ezinye izimpawu zokuthengisa ziyimpahla yabanikazi bazo.
ISIFINYEZO SOKUSEBENZA Imininingwane iku-TA = 25°C
| I-PARAMETER | IMIBANDELA/AMANOTHI | VALUE |
| Okokufaka VoltagI-e Range, VIN (BSTIN) | I-3V ukuya ku-30V (Bheka ithebula 1) | |
| ILED | I-DC1511A-A (LTM8042) DC1511A-B (LTM8042-1)
Ukuncishiswa Kwamanje Kungase Kudingeke Ngaphansi Kwezimo Ezithile Ze-VIN, i-VOUT, Imvamisa kanye Nezimo Ezishisayo |
1A
350mA |
| Ukushintsha Imvamisa | I-RT = 30.1k (DC1511A-A) RT = 16.9k (DC1511A-B) | 600kHz 950kHz |
| Umthamo Ophumayo Omkhulutage (Vula i-LED Voltage) | 36V | |
| Ukusebenza kahle | I-VIN = 12V, VLED = 16.7V, ILED = 1A
I-VIN = 12V, VLED = 24.8V, ILED = 350mA |
91.5% (Bheka umfanekiso 2)
89% (Bheka umfanekiso 3) |
ISITHOMBE SEBHODI
INQUBO YOKUQALA NGOKUSHESHA
Isekethe ye-Demonstration 1511A kulula ukuyimisa ukuze kuhlolwe ukusebenza kwe-LTM8042EV/LTM8042EV-1. Bheka uMdwebo 1 ukuze uthole ukusethwa kwemishini yokulinganisa efanele bese ulandela inqubo engezansi ukuze uthole i-boost (step-up) topology.
- Xhuma uchungechunge lwama-LED ngevolthi eya phambilitage 32V noma ngaphansi, kodwa inkulu kunevol yokufakatage, kumatheminali e-LED+ (i-anode ye-LED) kanye ne-GND (i-LED cathode) ku-PCB, njengoba kuboniswe kuMfanekiso 1.
- Uma ucisha ugesi, xhuma amandla okokufaka kumatheminali e-BSTIN/BKLED– kanye ne-GND ngaphakathi kobubanzi obucaciswe kuThebula 1. Setha kusengaphambili ivolthi yokufaka ye-DCtage ngaphakathi kwevolumu yokufaka enconyiwetage ibanga levolumu eya phambili efaneletage yochungechunge lwe-LED.
Ithebula 1. Ibanga Lokufaka Lokusebenza Okufanelekile (Bheka ku
Idatha ye-LTM8042/LTM8042-1 yePD
| I-DC1511A-A LTM8042 | I-DC1511A-B LTM8042-1 | ||
| INPUT I-VOLTAGE (BSTIN/BKLED- KUYA KU-GND) | I-LED STRING I-VOLTAGE (I-LED+ KUYA GND) | INPUT I-VOLTAGE (BSTIN/BKLED- KUYA KU-GND) | I-LED STRING I-VOLTAGE (I-LED+ KUYA GND) |
| 5V kuya ku-5.8V | 6V kuya ku-9V | 3.2V kuya ku-7V | 8V kuya ku-12V |
| 6.4V kuya ku-7.7V | 8V kuya ku-12V | 4.1V kuya ku-10V | 12V kuya ku-16V |
| 8.6V kuya ku-11.3V | 12V kuya ku-16V | 4.8V kuya ku-12.3V | 15V kuya ku-21V |
| 11.3V kuya ku-13.8V | 15V kuya ku-21V | 5.8V kuya ku-15V | 18V kuya ku-24V |
| 13.4V kuya ku-16.5V | 18V kuya ku-24V | 8.5V kuya ku-20.8V | 24V kuya ku-32V |
| 20.5V kuya ku-22.5V | 24V kuya ku-32V | ||
3. Xhuma itheminali ye-PWM. Uma i-PWM ingasetshenziswa, xhuma i-PWM emthonjeni we-5V noma kuvolumu yokufakatage. I-PWM kufanele idonselwe phezulu noma ama-LED azohlala evaliwe.
4. Vula okokufaka kwamandla kagesi.
5. Bheka iyunithi yezinhlamvu ye-LED esebenza kuhlelo lwamanje lwe-LED.
6. Ngokufiphaza kwe-PWM, xhuma i-PWM 100Hz noma isignali yefrikhwensi ephezulu kutheminali ye-PWM.
7. Qaphela ukuncishiswa kokukhanya kuyunithi yezinhlamvu ze-LED ngokushintshashintsha umjikelezo womsebenzi wesignali ye-PWM.
Ukuze usebenzise i-DC1511A ku-topology yemodi ye-buck-boost, yenza izinguquko ezilandelayo kunqubo.
- Esinyathelweni soku-1, xhuma i-cathode yentambo ye-LED ku-BSTIN/BKLED– Ivolumu ye-LED eya phambilitagu-e angase abe mkhulu kunomthamo wokufakatage yemodi ye-buck-boost.
- Esinyathelweni sesi-2, bheka ithebula lemininingwane yezinhlelo zokusebenza zemodi ye-buck-boost yedatha. Setha ngaphambilini i-DC input voltage ngaphakathi kwevolumu yokufaka enconyiwetage ibanga levolumu eya phambili efaneletage kanye nokukhanya kwe-LED
Ukuze usebenzise i-DC1511A kumodi yebhali (ukuya phansi) i-topology, yenza izinguquko ezilandelayo kunqubo.
- Khipha i-jumper engu-0Ω endaweni engu-R8 futhi esikhundleni salokho ufake i-jumper endaweni Lokhu kufushane i-VCC, TGEN kanye ne-RUN pin/terminals ku-BSTOUT/BKIN esikhundleni se-BSTIN/BKLED–.
- Esinyathelweni soku-1, xhuma i-cathode yentambo ye-LED ku-BSTIN/BKLED– Ivolumu ye-LED eya phambilitagu-e kufanele abe ngaphansi kwevolumu yokufakatage yemodi yemali.
Esinyathelweni sesi-2, xhuma okokufaka kwamandla kagesi ku-BSTOUT/ BKIN ne-GND. Bheka ithebula lemininingwane yezinhlelo zokusebenza zebhukhi yedatha. Setha ngaphambilini i-DC input voltage ngaphakathi kwevolumu yokufaka enconyiwetage ibanga levolumu eya phambili efaneletagu-e kanye nentambo ye-LED.
INQUBO YOKUQALA NGOKUSHESHA
Umfanekiso 1. Ukusethwa Kwezisetshenziswa Zokulinganisa Ezifanele (Boost Topology)
Umfanekiso 2. DC1511A-A Ukusebenza kahle vs VIN Boost Operation, 16.7V ku-1A LED String
Umfanekiso 3. DC1511A-B Ukusebenza kahle vs VIN Boost Operation, 24.8V ku-350mA LED String
INCWADI YEDEMO DC1511A
IZINGXENYE ZOKUFUNDA
Idatha ye-LTM8042EV
| ITEM | QTY | IREferensi | INGXENYE INCAZELO | UMENZI/INGXENYE INOMBOLO |
Izingxenye Zesekethe Ezidingekayo
| 1 | 1 | C1 | I-Cap., X5R, 4.7µF, 50V, 20%, 1206 | I-Taiyo Yuden UMK316BJ475ML-T |
| 2 | 1 | C2 | I-Cap., X5R, 10µF, 50V, 20%, 1210 | I-Taiyo Yuden UMK325BJ106MM-T |
| 3 | 1 | C4 | I-Cap., X7R, 0.01µF, 25V, 10%, 0603 | I-AVX 06033C103KAT2A |
| 4 | 1 | RT | I-Res., Chip, 30.1k, 0.06W, 1%, 0603 | I-NIC NRC06F3012TRF |
| 5 | 1 | U1 | I-IC, Umshayeli we-LED, i-LGA (77), 15mm × 9mm × 4.32mm | I-Linear Technology Corporation LTM8042EV |
Izingxenye Zesekethe Yebhodi Yedemo Eyengeziwe
| 1 | 1 | C3 | I-Cap., X5R, 1µF, 50V, 20%, 1206 | I-TDK C3216X5R1H105M |
| 2 | 0 | I-C5 (OPT) | Cap., 1206 | |
| 3 | 0 | I-RADJ, R2, R3, R5, R7 (OPT) | Inombolo yepholisi, 0603 | |
| 4 | 1 | I-RSYNC | I-Res., Chip, 100k, 0.06W, 5%, 0603 | I-NIC NRC06J104TRF |
| 5 | 2 | R1, R6 | Res./Jumper, Chip, 0Ω, 1/16W, 1A, 0603 | Vishay CRCW06030000Z0EA |
| 6 | 0 | I-R4 (OPT) | Inombolo yepholisi, 1206 | |
| 7 | 1 | R8 | Res./Jumper, Chip, 0Ω, 1/4W, 1A, 1206 | Vishay CRCW12060000ZOEA |
| 8 | 1 | M1 | I-P-Channel MOSFET, 40V, SOT-23 | Vishay Si2319DS-T1-E3 #PBF |
I-Hardware, Yebhodi Ledemo Kuphela
| 1 | 13 | E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13 | I-Turret, i-Testpoint 0.094″ | Mill-Max 2501-2-00-80-00-00-07-0 |
I-LTM8042EV-1
| ITEM | QTY | IREferensi | INGXENYE INCAZELO | UMENZI/INGXENYE INOMBOLO |
Izingxenye Zesekethe Ezidingekayo
| 1 | 1 | C1 | I-Cap., X5R, 2.2µF, 50V, 20%, 1206 | I-Taiyo Yuden UMK316BJ225MD-T |
| 2 | 1 | C2 | I-Cap., X5R, 10µF, 50V, 20%, 1210 | I-Taiyo Yuden UMK325BJ106MM-T |
| 3 | 1 | C4 | I-Cap., X7R, 0.01µF, 25V, 10%, 0603 | I-AVX 06033C103KAT2A |
| 4 | 1 | RT | I-Res., Chip, 16.9k, 0.06W, 1%, 0603 | I-Vishay CRCW060316K9FKEA |
| 5 | 1 | U1 | I-IC, Umshayeli we-LED, i-LGA (77), 15mm × 9mm × 4.32mm | I-Linear Technology Corporation LTM8042EV-1 |
Izingxenye Zesekethe Yebhodi Yedemo Eyengeziwe
| 1 | 1 | C3 | I-Cap., X5R, 1µF, 50V, 20%, 1206 | I-TDK C3216X5R1H105M |
| 2 | 0 | I-C5 (OPT) | Cap., 1206 | |
| 3 | 0 | I-RADJ, R2, R3, R5, R7 (OPT) | Inombolo yepholisi, 0603 | |
| 4 | 1 | I-RSYNC | I-Res., Chip, 100k, 0.06W, 5%, 0603 | I-NIC NRC06J104TRF |
| 5 | 2 | R1, R6 | Res./Jumper, Chip, 0Ω, 1/16W, 1A, 0603 | Vishay CRCW06030000Z0EA |
| 6 | 0 | I-R4 (OPT) | Inombolo yepholisi, 1206 | |
| 7 | 0 | R8 | Res./Jumper, Chip, 0Ω, 1/4W, 1A, 1206 | Vishay CRCW12060000ZOEA |
| 8 | 1 | M1 | I-P-Channel MOSFET, 40V, SOT-23 | Vishay Si2319DS-T1-E3 #PBF |
I-Hardware, Yebhodi Ledemo Kuphela
| 1 | 13 | E1, E2, E3, E4, E5, E6, E7, E8, E9, E10, E11, E12, E13 | I-Turret, Testpoint, 0.094″ | Mill-Max 2501-2-00-80-00-00-07-0 |
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Funda okwengeziwe ngale Manuwali & Landa i-PDF:
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LINEAR TECHNOLOGY LTM8042 LED Driver Module [pdf] Iziyalezo LTM8042, LTM8042-1, LTM8042 LED Driver Module, LTM8042, LED Driver Module |
