Part Number
    Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    LM3503 Search Results

    LM3503 Datasheets (83)

    Select Manufacturer
    Part ECAD Model Manufacturer Description Datasheet Type PDF PDF Size Page count
    LM3503
    National Semiconductor LM3503 - Dual-Display Constant Current LED Driver with Analog Brightness Control Original PDF 1.07MB 20
    LM3503ITL-16
    National Semiconductor Dual-Display Constant Current LED Driver with Analog Brightness Control Original PDF 1.07MB 20
    LM3503ITL-16/NOPB
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; Package: MICRO SMD; No of Pins: 10; Qty per Container: 250/Reel Original PDF 1.07MB 20
    LM3503ITL-16/NOPB
    Texas Instruments LM3503 - Dual-Display Constant Current LED Driver with Analog Brightness Control 10-DSBGA -40 to 85 Original PDF 1.42MB 26
    LM3503ITL-16/NOPB
    Texas Instruments PMIC - LED Drivers, Integrated Circuits (ICs), IC LED DRVR WHT BCKLT 10MICROSMD Original PDF 28
    LM3503ITL-25
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; Package: MICRO SMD; No of Pins: 10; Qty per Container: 250; Container: Reel Original PDF 1.07MB 20
    LM3503ITL-25EV
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; ; Qty per Container: 1 Original PDF 1.07MB 20
    LM3503ITL-25EV/NOPB
    Texas Instruments Development Boards, Kits, Programmers - Evaluation Boards - LED Drivers - BOARD EVAL FOR LM3503ITL-25 Original PDF 178.58KB
    LM3503ITL-25/NOPB
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; Package: MICRO SMD; No of Pins: 10; Qty per Container: 250/Reel Original PDF 1.07MB 20
    LM3503ITL-25/NOPB
    Texas Instruments LM3503 - Dual-Display Constant Current LED Driver with Analog Brightness Control 10-DSBGA -40 to 85 Original PDF 1.42MB 26
    LM3503ITL-25/NOPB
    Texas Instruments PMIC - LED Drivers, Integrated Circuits (ICs), IC LED DRVR WHT BCKLT 10MICROSMD Original PDF 28
    LM3503ITL-35
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; Package: MICRO SMD; No of Pins: 10; Qty per Container: 250; Container: Reel Original PDF 1.07MB 20
    LM3503ITL-35/NOPB
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; Package: MICRO SMD; No of Pins: 10; Qty per Container: 250/Reel Original PDF 1.07MB 20
    LM3503ITL-35/NOPB
    Texas Instruments LM3503 - Dual-Display Constant Current LED Driver with Analog Brightness Control 10-DSBGA -40 to 85 Original PDF 1.42MB 26
    LM3503ITL-35/NOPB
    Texas Instruments PMIC - LED Drivers, Integrated Circuits (ICs), IC LED DRVR WHT BCKLT 10MICROSMD Original PDF 28
    LM3503ITL-44
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; Package: MICRO SMD; No of Pins: 10; Qty per Container: 250; Container: Reel Original PDF 1.07MB 20
    LM3503ITL-44
    Texas Instruments PMIC - LED Drivers, Integrated Circuits (ICs), IC LED DRVR WHT BCKLT 10MICROSMD Original PDF 28
    LM3503ITL-44/NOPB
    National Semiconductor LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control; Package: MICRO SMD; No of Pins: 10; Qty per Container: 250/Reel Original PDF 1.07MB 20
    LM3503ITL-44/NOPB
    Texas Instruments LM3503 - Dual-Display Constant Current LED Driver with Analog Brightness Control 10-DSBGA -40 to 85 Original PDF 1.42MB 26
    LM3503ITLX-16
    National Semiconductor Dual-Display Constant Current LED Driver with Analog Brightness Control Original PDF 1.07MB 20
    SF Impression Pixel

    LM3503 Price and Stock

    Select Manufacturer

    Texas Instruments LM3503SQ-16/NOPB

    LED Driver 10 Segment 16-Pin WQFN EP T/R
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical LM3503SQ-16/NOPB 5,000 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.38
    • 10000 $1.29
    Buy Now
    Rochester Electronics LM3503SQ-16/NOPB 5,000 1
    • 1 -
    • 10 -
    • 100 $1.23
    • 1000 $1.10
    • 10000 $1.03
    Buy Now

    National Semiconductor Corporation LM3503SQ-35/NOPB

    LED Driver 10 Segment 16-Pin WQFN EP T/R
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical () LM3503SQ-35/NOPB 3,960 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.38
    • 10000 $1.29
    Buy Now
    LM3503SQ-35/NOPB 2,350 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.38
    • 10000 $1.29
    Buy Now
    LM3503SQ-35/NOPB 736 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.38
    • 10000 $1.29
    Buy Now
    Rochester Electronics LM3503SQ-35/NOPB 7,046 1
    • 1 -
    • 10 -
    • 100 $1.23
    • 1000 $1.10
    • 10000 $1.03
    Buy Now

    National Semiconductor Corporation LM3503SQ-16/NOPB

    LED Driver 10 Segment 16-Pin WQFN EP T/R
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical () LM3503SQ-16/NOPB 3,949 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.38
    • 10000 $1.29
    Buy Now
    LM3503SQ-16/NOPB 1,000 244
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.38
    • 10000 $1.29
    Buy Now
    Rochester Electronics LM3503SQ-16/NOPB 4,949 1
    • 1 -
    • 10 -
    • 100 $1.23
    • 1000 $1.10
    • 10000 $1.03
    Buy Now

    Texas Instruments LM3503SQ-35

    LED Driver 10 Segment 16-Pin WQFN EP T/R
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical LM3503SQ-35 2,000 212
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.59
    • 10000 $1.49
    Buy Now
    Rochester Electronics LM3503SQ-35 2,000 1
    • 1 -
    • 10 -
    • 100 $1.42
    • 1000 $1.27
    • 10000 $1.19
    Buy Now

    National Semiconductor Corporation LM3503SQ-44/NOPB

    LED Driver 10 Segment 16-Pin WQFN EP T/R
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    Verical () LM3503SQ-44/NOPB 1,000 199
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.56
    • 10000 $1.40
    Buy Now
    LM3503SQ-44/NOPB 1,000 199
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.56
    • 10000 $1.40
    Buy Now
    Rochester Electronics LM3503SQ-44/NOPB 2,168 1
    • 1 -
    • 10 -
    • 100 $1.51
    • 1000 $1.25
    • 10000 $1.12
    Buy Now

    LM3503 Datasheets Context Search

    Catalog Datasheet Type Document Tags PDF

    Contextual Info: LM3503 www.ti.com SNVS329E – JULY 2005 – REVISED MAY 2013 LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control Check for Samples: LM3503 FEATURES APPLICATIONS • • • 1 2 • • • • • • • • Drives up to 4, 6, 8 or 10 White LEDs for Dual


    Original
    lm3503snvs329e PDF

    Contextual Info: LM3503 www.ti.com SNVS329E – JULY 2005 – REVISED MAY 2013 LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control Check for Samples: LM3503 FEATURES APPLICATIONS • • • 1 2 • • • • • • • • Drives up to 4, 6, 8 or 10 White LEDs for Dual


    Original
    lm3503snvs329e PDF

    Contextual Info: LM3503 LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control Literature Number: SNVS329D LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control General Description Features The LM3503 is a white LED driver for lighting applications.


    Original
    lm3503snvs329d PDF

    LM3503ITL-16

    Abstract: LM3503ITLX-16 LM3503SQ-16 LM3503SQX-16 SQA16A LM3503 SS14 application notes
    Contextual Info: LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control General Description Features The LM3503 is a white LED driver for lighting applications. For dual display backlighting applications, the LM3503 provides a complete solution. The LM3503 contains two internal


    Original
    lm3503csp-9-111s2lm3503itl-16lm3503itlx-16+4lm3503sq-16lm3503sqx-16sqa16ass14 application notes PDF

    Contextual Info: LM3503 www.ti.com SNVS329D – JULY 2005 – REVISED AUGUST 2006 LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control Check for Samples: LM3503 FEATURES 1 • 2 • • • • • Drives up to 4, 6, 8 or 10 White LEDs for Dual Display Backlighting


    Original
    lm3503snvs329d PDF

    lm3503

    Contextual Info: LM3503 www.ti.com SNVS329E – JULY 2005 – REVISED MAY 2013 LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control Check for Samples: LM3503 FEATURES APPLICATIONS • • • 1 2 • • • • • • • • Drives up to 4, 6, 8 or 10 White LEDs for Dual


    Original
    lm3503snvs329e PDF

    LM3303N

    Abstract: lm350
    Contextual Info: LM3303/LM3403/LM3503 National Semiconductor LM3303/LM3403/LM3503 Quad Operational Amplifiers General Description The LM3303, LM3403, and LM3503 are monolithic quad op­ erational amplifiers consisting of four independent high gain, internally frequency compensated, operational amplifiers


    OCR Scan
    lm3303/lm3403/lm3503lm3303lm3403lm3503+3tl/h/10064-12lm3303nlm350 PDF

    MBR240LT

    Abstract: LM3503 LM3503ITL-16 LM3503ITLX-16 LM3503SQ-16 LM3503SQX-16 SQA16A C3216X7R1H105KT smd IC marking SS16 fet field effect transistor
    Contextual Info: LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control General Description Features The LM3503 is a white LED driver for lighting applications. For dual display backlighting applications, the LM3503 provides a complete solution. The LM3503 contains two internal


    Original
    lm3503csp-9-111s2mbr240ltlm3503itl-16+7lm3503itlx-16lm3503sq-16lm3503sqx-16sqa16ac3216x7r1h105ktsmd ic marking ss16fet field effect transistor PDF

    LM35G

    Abstract: LM3303N wein bridge oscillator LM741 LM350S J14A LM3303 LM3303J LM3403 LM3503
    Contextual Info: LM3303/LM3403/LM3503 National Semiconductor LM3303/LM3403/LM3503 Quad Operational Amplifiers General Description The LM3303, LM3403, and LM3503 are monolithic quad op­ erational amplifiers consisting of four independent high gain, internally frequency compensated, operational amplifiers


    OCR Scan
    lm3303/lm3403/lm3503lm3303lm3403lm3503+11tl/h/10064-14tl/h/10064-12tl/h/10064-13tl/h/10064-15lm35glm3303nwein bridge oscillatorlm741lm350sj14alm3303j PDF

    smd diode ss14

    Abstract: 6 PIN SMD IC FOR 15 W LED DRIVERS C3216X7R1H105KT white led driver LM3503 LM3503ITL-16 LM3503ITLX-16 LM3503SQ-16 LM3503SQX-16 SQA16A
    Contextual Info: LM3503 Dual-Display Constant Current LED Driver with Analog Brightness Control General Description The LM3503 is a white LED driver for lighting applications. For dual display backlighting applications, the LM3503 provides a complete solution. The LM3503 contains two internal


    Original
    lm3503csp-9-111s2smd diode ss146 pin smd ic for 15 w led drivers+7c3216x7r1h105ktwhite led driverlm3503itl-16lm3503itlx-16lm3503sq-16lm3503sqx-16sqa16a PDF

    diagram 24v dc-ac dimmer

    Abstract: step-down low cost lm2575 dc-dc converter 12V DC to 3 Phase 36V AC INVERTERS lm2576 sot23-5 mosfet driver SIMPLE SWITCHER 3A Step-up negative Voltage Reg lm2575 adj led 24v active clamp forward converter 3F smd sot23-6 d3b sot23-6
    Contextual Info: Power Products Selection Guide 4Q 2006 General Purpose Products for VINmax >25V PWM Controllers . 6-9 Integrated Switch Buck Regulators . 10-13 Boost Regulators and Controllers . 14-15 MOSFET Drivers . 16-17


    Original
    ot-223ot-23o-263o-252+11o-220diagram 24v dc-ac dimmerstep-down low cost lm2575 dc-dc converter12v dc to 3 phase 36v ac inverterslm2576sot23-5 mosfet driversimple switcher 3a step-up negative voltage reglm2575 adj led24v active clamp forward converter3f smd sot23-6d3b sot23-6 PDF

    1000w inverter PURE SINE WAVE schematic diagram

    Abstract: 1000w audio amplifier circuit diagram database PAL 007 pioneer dc-ac inverter PURE SINE WAVE schematic diagram 1000w class d circuit diagram schematics schematic diagram inverter 12v to 24v 1000w mini Audio transformer 200k to 1k ct input 12v 300W AUDIO AMPLIFIER CIRCUIT DIAGRAM schematic LG lcd backlight inverter lm98725 users guide
    Contextual Info: Analog Products Selection Guide 2010 Vol. 1 Data Conversion Amplifiers Temperature Sensors Clock and Timing Interface Audio Power Management Design Tools national.com Energy-Efficient Analog Makes the Difference national.com W ith 50 years of analog innovation, National Semiconductor


    Original
    1000w inverter pure sine wave schematic diagram1000w audio amplifier circuit diagram databasepal 007 pioneerdc-ac inverter pure sine wave schematic diagram+61000w class d circuit diagram schematicsschematic diagram inverter 12v to 24v 1000wmini audio transformer 200k to 1k ct input12v 300w audio amplifier circuit diagramschematic lg lcd backlight inverterlm98725 users guide PDF

    1000w inverter PURE SINE WAVE schematic diagram

    Abstract: 1000w audio amplifier circuit diagram database spo2 sensor ds9our124 LMV1051 1000W power amplifier ocl circuit diagram triac MAC 97 AB S13 instrument cluster schematic Amplifier 1000w schematic diagrams lm98725 users guide
    Contextual Info: Analog Products Selection Guide 2011 Data Conversion Amplifiers Temperature Sensors Clock and Timing Interface Audio Power Management Design Tools national.com Energy-Efficient Analog Makes the Difference national.com W ith 50 years of analog innovation, National Semiconductor


    Original
    1000w inverter pure sine wave schematic diagram1000w audio amplifier circuit diagram databasespo2 sensords9our124+6lmv10511000w power amplifier ocl circuit diagramtriac mac 97 abs13 instrument cluster schematicamplifier 1000w schematic diagramslm98725 users guide PDF

    smd diode marking SS16

    Abstract: C3216X7R1H105KT tdk
    Contextual Info: LM3502 LM3502 Step-Up Converter for White LED Applications Literature Number: SNVS339A LM3502 Step-Up Converter for White LED Applications General Description Features The LM3502 is a white LED driver for lighting applications. For dual display or large single white LED string backlighting


    Original
    lm3502snvs339asmd diode marking ss16c3216x7r1h105kt tdk PDF

    1000w audio amplifier circuit diagram database

    Abstract: 1000w inverter PURE SINE WAVE schematic diagram PAL 007 pioneer schematic lg backlight inverter LP2989 CROSS LME49830 pioneer mosfet ic PAL 007 S13 instrument cluster schematic PAL 007 pioneer mosfet SCHEMATIC 1000w power amplifier stereo
    Contextual Info: Analog Products Selection Guide 2010 Vol. 1 Data Conversion Amplifiers Temperature Sensors Clock and Timing Interface Audio Power Management Design Tools national.com Energy-Efficient Analog Makes the Difference national.com W ith 50 years of analog innovation, National Semiconductor


    Original
    1000w audio amplifier circuit diagram database1000w inverter pure sine wave schematic diagrampal 007 pioneerschematic lg backlight inverter+6lp2989 crosslme49830pioneer mosfet ic pal 007s13 instrument cluster schematicpal 007 pioneer mosfetschematic 1000w power amplifier stereo PDF

    Arduino Mega2560

    Abstract: 13001 S 6D TRANSISTOR arduino uno rev 3 agilent optical encoder 9988 MZ 13001 TRANSISTOR arduino mega 2650 skiip 613 gb 123 ct arduino sound sensor module pic arduino nano mc34063l
    Contextual Info: ND3% BASE1 XXXX2108-0010-1-P 10 TSQ: 3001 CMS: CMS-USM TS host OP: NN COMP: 15-07-11 Hour: 13:07 TS:TS date TS time MCUS, MPUS, DSPS & DEVELOPMENT TOOLS Find Datasheets Online 8-BIT MCUS & DEVELOPMENT TOOLS 1 PSoC 3 DEVELOPMENT KITS ARDUINO MCU DEVLOPMENT PLATFORM


    Original
    cy8c38cy8c29incl79512t9797+1612t980412t980312t980012t980212t980112t9805arduino mega256013001 s 6d transistorarduino uno rev 3agilent optical encoder 9988mz 13001 transistorarduino mega 2650skiip 613 gb 123 ctarduino sound sensor module picarduino nanomc34063l PDF

    MLT 22 MOSFET AUDIO AMPLIFIER

    Abstract: Hdmi to micro usb wiring diagram LM2687LDX LMS4684LD transistor SMD 12W inverter hdmi CONVERTER SDI IC CAT-5 Sdi IC ADC081S021CISD ds15br400 DP83848k
    Contextual Info: DP83848K PHYTER Mini LS Industrial Temperature Single Port 10/100 Ethernet Transceiver General Description Features The DP83848K addresses the quality, reliability and small • Low-power 3.3V, 0.18µm CMOS technology form factor required for space sensitive applications in • Auto-MDIX for 10/100 Mb/s


    Original
    dp83848k16-bitlqa68amlt 22 mosfet audio amplifier+8hdmi to micro usb wiring diagramlm2687ldxlms4684ldtransistor smd 12w inverterhdmi converter sdi iccat-5 sdi icadc081s021cisdds15br400 PDF

    MARK PET SOT23-5

    Abstract: LMV8244 lg led tv electronic diagram 1000w audio amplifier circuit diagram database Video sync splitter lm 800 va sinewave inverter circuit diagrams usb to rj45 extenders diagram LG LCD TV circuits lm4702 OUTPUT STAGE INFORMATION LM97593
    Contextual Info: Analog Product Guide Q1 2008 Table of Contents .3 Why Efficiency Matters.4 PowerWise Solutions .5 Design Tools .6 Data Conversion . 7-21 Operational Amplifiers . 22-43


    Original
    mark pet sot23-5lmv8244lg led tv electronic diagram1000w audio amplifier circuit diagram database+6video sync splitter lm800 va sinewave inverter circuit diagramsusb to rj45 extendersdiagram lg lcd tv circuitslm4702 output stage informationlm97593 PDF

    VLF4012

    Abstract: 8 pin rgb led vlf3012 LM2707 LM2751 LM2796 LM27966SQ LM3500 LM3502 LM3508
    Contextual Info: 便携式产品的光源管理 1 便携式产品的光源管理 钟建鹏 中国区资深应用工程师 电源管理产品业务部 2 便携式产品光源市场 血压计 Mp3 播放器 血糖计 游戏机 GPS 光源 脉搏血氧计 卫星收音机 手机


    Original
    lm270750khzlm2751lm3502+11lm2796lm27951/2lm35001kh06/2007lp3958lp5526vlf40128 pin rgb ledvlf3012lm27966sqlm3508 PDF

    RGB LED MOVING DISPLAY CIRCUITS

    Abstract: smd diode B4 images 12V mono amplifier 400 watts smd diode B3 dvd portable player 15W x 2 Multimedia IC 3000 Watt BTL Audio Amplifier pioneer dvd player giga media converter dvr 16 channel dvs
    Contextual Info: Personal Mobile Devices Selection Guide 2008 Vol. 1 Displays . 5-9 RF . 10-11 Integration. 12-17 Illumination. 18-21


    Original
    rgb led moving display circuitssmd diode b4 images12v mono amplifier 400 wattssmd diode b3+6dvd portable player15w x 2 multimedia ic3000 watt btl audio amplifierpioneer dvd playergiga media converterdvr 16 channel dvs PDF

    Contextual Info: LM3502 www.ti.com SNVS339A – SEPTEMBER 2005 – REVISED AUGUST 2006 LM3502 Step-Up Converter for White LED Applications Check for Samples: LM3502 FEATURES 1 • 2 • • • • • Drive up to 4, 6, 8 or 10 white LEDs for Dual Display Backlighting >80% efficiency


    Original
    lm3502snvs339alm3502ti PDF

    MBR240LT

    Abstract: smd diode ss14 data C3216X7R1H105KT LM3502 LM3502ITL-16 LM3502ITLX-16 LM3502SQ-16 LM3502SQX-16 SQA16A LM3502SQX4
    Contextual Info: LM3502 Step-Up Converter for White LED Applications General Description Features The LM3502 is a white LED driver for lighting applications. For dual display or large single white LED string backlighting applications, the LM3502 provides a complete solution. The


    Original
    lm3502csp-9-111s2mbr240ltsmd diode ss14 data+7c3216x7r1h105ktlm3502itl-16lm3502itlx-16lm3502sq-16lm3502sqx-16sqa16alm3502sqx4 PDF

    L00053B

    Abstract: AN1407 L00045B L00044B L00050B 3216X7R1H105K LM3502 smd transistor 2f en francais LM3503 SQA16A
    Contextual Info: ߁ຎ ࢅ44VӲԨDŽLM3502ITLDž‫֑ۼ‬ᆩmicro āāLM3502/03ೠࠚ‫ۉ‬ୟӱ๟ืუ኱ୁ-኱ୁገ࣑ഗ‫߾ڦ‬ LM3502/03ᄺ༵ࠃ16-LLP‫ހ‬ጎ‫ڦ‬ႚ๕DŽ֖९۩‫ڇ‬႑တDžă SMD‫ހ‬ጎă ፕᄇ๖ӱăLM3502/03๟ྺቷ௽ᆌᆩ‫ڦ‬ӣ࠼LEDൻ‫ۯ‬ഗă


    Original
    an-1407lm3502/03lm3502/03lm3502lm3503+1016-llplm3502itll00053ban1407l00045bl00044bl00050b3216x7r1h105ksmd transistor 2f en francaissqa16a PDF

    TDA0200

    Abstract: TDA0200SP UA1489PC MC7812CK motorola ULN2803N UA324PC MC7812CK "cross reference" AM6012PC UA7812KC UA7812UC
    Contextual Info: CROSS REFERENCE INDUSTRY STANDARD AM6012APC AM6012PC CA081AE CA081BE CA081E CA082AE CA082BE CA082E CA084AE CA084BE CA084E CA124E CA139AF CA139E CA139F CA1458E CA1558E CA158E CA224E CA239AE CA239AF CA239E CA239F CA258E CA2901E CA2901F CA2902E CA2904E CA301AE


    OCR Scan
    am6012apcam6012pcca081aeca081be+15ca081eca082aeca082beca082eca084aeca084betda0200tda0200spua1489pcmc7812ck motorolauln2803nua324pcmc7812ck "cross referenceua7812kcua7812uc PDF