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

    MIC2177 Search Results

    SF Impression Pixel

    MIC2177 Price and Stock

    Microchip Technology Inc MIC2177-3.3YWM-TR

    IC REG BUCK 3.3V 2.5A 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC2177-3.3YWM-TR Cut Tape 802 1
    • 1 $7.98
    • 10 $7.98
    • 100 $7.98
    • 1000 $7.98
    • 10000 $7.98
    Buy Now
    MIC2177-3.3YWM-TR Digi-Reel 1
    • 1 $7.98
    • 10 $7.98
    • 100 $7.98
    • 1000 $7.98
    • 10000 $7.98
    Buy Now
    Avnet Americas MIC2177-3.3YWM-TR Reel 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Get Quote
    Mouser Electronics MIC2177-3.3YWM-TR
    • 1 -
    • 10 -
    • 100 -
    • 1000 $6.41
    • 10000 $6.41
    Get Quote
    Newark MIC2177-3.3YWM-TR Reel 1,000
    • 1 -
    • 10 -
    • 100 $6.21
    • 1000 $6.21
    • 10000 $6.21
    Buy Now
    Microchip Technology Inc MIC2177-3.3YWM-TR Reel 28 Weeks
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    NAC MIC2177-3.3YWM-TR 1
    • 1 $10.26
    • 10 $10.26
    • 100 $10.26
    • 1000 $9.33
    • 10000 $9.33
    Buy Now

    Microchip Technology Inc MIC2177-5.0YWM

    IC REG BUCK 5V 2.5A 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC2177-5.0YWM Bulk 15 1
    • 1 $2.78
    • 10 $2.78
    • 100 $2.78
    • 1000 $2.78
    • 10000 $2.78
    Buy Now
    MIC2177-5.0YWM Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Newark MIC2177-5.0YWM Bulk 76
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Microchip Technology Inc MIC2177-5.0YWM Tube 28 Weeks
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    NAC MIC2177-5.0YWM Tube 1
    • 1 $10.26
    • 10 $10.26
    • 100 $9.33
    • 1000 $9.33
    • 10000 $9.33
    Buy Now

    Microchip Technology Inc MIC2177YWM

    IC REG BUCK ADJ 2.5A 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC2177YWM Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Newark MIC2177YWM Bulk 76
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    Microchip Technology Inc MIC2177YWM Tube 28 Weeks
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    Buy Now
    NAC MIC2177YWM Tube 1
    • 1 $10.26
    • 10 $10.26
    • 100 $9.33
    • 1000 $9.33
    • 10000 $9.33
    Buy Now

    Rochester Electronics LLC MIC2177BWM

    IC REG BUCK ADJ 2.5A 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC2177BWM Tube 37
    • 1 -
    • 10 -
    • 100 $8.23
    • 1000 $8.23
    • 10000 $8.23
    Buy Now

    Microchip Technology Inc MIC2177BWM-TR

    IC REG BUCK ADJ 2.5A 20SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC2177BWM-TR Reel 1,000
    • 1 -
    • 10 -
    • 100 -
    • 1000 $4.475
    • 10000 $4.475
    Buy Now

    MIC2177 Datasheets (24)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    MIC2177 Micrel Semiconductor 2.5A Synchronous Buck Regulator Original PDF
    MIC2177-3.3BWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC 3.3V 20SOIC Original PDF
    MIC2177-3.3BWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC 3.3V 20SOIC Original PDF
    MIC2177-3.3BWM Micrel Semiconductor 2.5A Synchronous Buck Regulator Original PDF
    MIC2177-3.3BWM Micrel Semiconductor IC REG STEP DOWN SWITCH FIX POS 3.3V 2.5A 20SOP Original PDF
    MIC2177-3.3BWM-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators - IC REG BUCK 3.3V 2.5A 20SOIC Original PDF
    MIC2177-3.3YWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC 3.3V 20SOIC Original PDF
    MIC2177-3.3YWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC 3.3V 20SOIC Original PDF
    MIC2177-3.3YWM Micrel Semiconductor 2.5A Synchronous Buck Regulator Original PDF
    MIC2177-3.3YWM-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators - IC REG BUCK 3.3V 2.5A 20SOIC Original PDF
    MIC2177-5.0BWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC 5V 2.5A 20SOIC Original PDF
    MIC2177-5.0BWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC 5V 2.5A 20SOIC Original PDF
    MIC2177-5.0BWM Micrel Semiconductor 2.5A Synchronous Buck Regulator Original PDF
    MIC2177-5.0BWM Micrel Semiconductor IC REG STEP DOWN SWITCH FIX POS 5V 2.5A 20SOP Original PDF
    MIC2177-5.0BWM-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators - IC REG BUCK 5V 2.5A 20SOIC Original PDF
    MIC2177-5.0YWM Micrel Semiconductor 2.5A Synchronous Buck Regulator Original PDF
    MIC2177-5.0YWM-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - DC DC Switching Regulators - IC REG BUCK 5V 2.5A 20SOIC Original PDF
    MIC2177BWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC ADJ 2.5A 20SOIC Original PDF
    MIC2177BWM Micrel Semiconductor PMIC - Voltage Regulators - DC DC Switching Regulators, Integrated Circuits (ICs), IC REG BUCK SYNC ADJ 2.5A 20SOIC Original PDF
    MIC2177BWM Micrel Semiconductor 2.5A Synchronous Buck Regulator Original PDF

    MIC2177 Datasheets Context Search

    Catalog Datasheet MFG & Type Document Tags PDF

    MBRS130L

    Abstract: MIC2177 MIC2177BWM MIC2177YWM MIC2178 TPSD107M010R0100 TPSE226M035R0300
    Text: MIC2177 Micrel MIC2177 2.5A Synchronous Buck Regulator General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. • 4.5V to 16.5V input voltage range


    Original
    MIC2177 MIC2177 200kHz 200mA M9999-052104 MBRS130L MIC2177BWM MIC2177YWM MIC2178 TPSD107M010R0100 TPSE226M035R0300 PDF

    MBRS130L

    Abstract: MBRS130LT3 MIC2177 MIC2177BWM MIC2178
    Text: MIC2177 2.5A Synchronous Buck Regulator General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. The MIC2177 operates from a 4.5V to 16.5V input and


    Original
    MIC2177 MIC2177 200kHz M9999-042108 MBRS130L MBRS130LT3 MIC2177BWM MIC2178 PDF

    schematic diagram PWM 30a

    Abstract: schematic diagram PWM 12V 30a DS5022P-333 MIC2177 MIC2177BWM SS14 TPSE227M010R0100
    Text: MIC2177 2.5A Evaluation Board Micrel MIC2177 2.5A Evaluation Board Ultra-High-Efficiency Synchronous Buck Converter 4.5V–16.5V to 1.8V–6V/2.5A When the internal high-side P-channel MOSFET turns on, one side of the inductor is connected to the input voltage.


    Original
    MIC2177 schematic diagram PWM 30a schematic diagram PWM 12V 30a DS5022P-333 MIC2177BWM SS14 TPSE227M010R0100 PDF

    CTX33-3P

    Abstract: jp1e CTX33 MBRS140 MBRS140T3 MIC2177 TPSE226M035R0300 TPSE227M010R0100
    Text: MIC2177 1A Evaluation Board Micrel MIC2177 1A Evaluation Board Ultrahigh-Efficiency Synchronous Buck Converter 5.4V–18V to 5V/1A When the internal high-side P-channel MOSFET turns on, one side of the inductor is connected to the input voltage. During this period, current flows from the input through the


    Original
    MIC2177 CTX33-3P jp1e CTX33 MBRS140 MBRS140T3 TPSE226M035R0300 TPSE227M010R0100 PDF

    flyback uc3843 tl431 18V

    Abstract: pwm schematic inverter uc3844 uc3845 sepic UC3843 sepic step up converter UC3842 design with TL431 flyback uc3842 tl431 555 timer for boost converter uc3845 buck converter schematic UC3843 sepic converter uc3843 dc dc step down converter
    Text: ANALOG SOLUTIONS VOLUME 3 JANUARY 1998 Ultra-High Efficiency Synchronous Buck Regulators MIC2177/78/79 Single-Chip DC-DC Converters for Portable Systems Key Features ➤ Ultra high efficiency — up to 97% ➤ Integrated power MOSFETs • MIC2177/78 — 2.5A


    Original
    MIC2177/78/79 MIC2177/78 MIC2179 200kHz MIC2177, MIC2178 450C-199 flyback uc3843 tl431 18V pwm schematic inverter uc3844 uc3845 sepic UC3843 sepic step up converter UC3842 design with TL431 flyback uc3842 tl431 555 timer for boost converter uc3845 buck converter schematic UC3843 sepic converter uc3843 dc dc step down converter PDF

    TM2015

    Abstract: TM-2003 2a09 TM2016 TM 2016 CARSEM G600 MIC2177YWM MIC5219YMM MIL-STD-883 PRESSURE
    Text: RELIABILITY REPORT DATE: 09/17/03 QUALITY ENG : PURPOSE: Dinh Pham LEAD FREE PKG QUAL 408 474-3621 QUAL VEHICLES : PACKAGE TYPE : ASSEMBLY LOC M/C LOT # FAB D/C # PROCESS MIC2177YWM 20L WSOIC CARSEM 6600 3A02058MEA SJ 0313 BCC MIC5219YMM 8L MSOP UNISEM G600


    Original
    MIC2177YWM 3A02058MEA MIC5219YMM 145779MEA 0237G MIC5248BM5 OT-23 6710S 2A09099MEA 1000HR TM2015 TM-2003 2a09 TM2016 TM 2016 CARSEM G600 MIC2177YWM MIC5219YMM MIL-STD-883 PRESSURE PDF

    pwm schematic inverter uc3844

    Abstract: UC3843 Boost converter flyback uc3842 tl431 flyback uc3843 tl431 18V UC3843 application note buck schematic UC3843 buck converter application note uc3844 schematic diagram 24v dc dc uc3843 boost uc3843 dc to dc converter schematic UC3843 application note buck
    Text: ANALOG SOLUTIONS VOLUME 3 JANUARY 1998 Ultra-High Efficiency Synchronous Buck Regulators MIC2177/78/79 Single-Chip DC-DC Converters for Portable Systems Key Features ➤ Ultra high efficiency — up to 97% ➤ Integrated power MOSFETs • MIC2177/78 — 2.5A


    Original
    MIC2177/78/79 MIC2177/78 MIC2179 200kHz 300kHz. MIC2177 MIC2178 450C-199 pwm schematic inverter uc3844 UC3843 Boost converter flyback uc3842 tl431 flyback uc3843 tl431 18V UC3843 application note buck schematic UC3843 buck converter application note uc3844 schematic diagram 24v dc dc uc3843 boost uc3843 dc to dc converter schematic UC3843 application note buck PDF

    MBRS130L

    Abstract: MBRS130LT3 MIC2177 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300
    Text: MIC2177 Micrel MIC2177 2.5A Synchronous Buck Regulator Advance Information General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. • 4.5V to 18V input voltage range


    Original
    MIC2177 MIC2177 200kHz 200mA MIC2177. MBRS130L MBRS130L MBRS130LT3 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300 PDF

    B1340

    Abstract: sy10s897 TSMC 0.18 um CMOS 2A243 bcd3 cmos tsmc 0.18 TSMC 0.25Um MIC29203BU Unisem B816E
    Text: Q1-2004-MICREL- PKG STORAGE LIFE TEST BAKE TA = + 150C Package Family PKG Type Lds Device WM W-SOIC W-SOIC W-SOIC WSOIC WSOIC WSOIC WSOIC WSOIC WSOIC WSOIC WSOIC 16 16 16 20 28 28 28 28 28 28 28 MIC2027 MIC2527 MIC2527 MIC2177 MIC1700B SY69952ZC SY69952ZC


    Original
    Q1-2004-MICREL- MIC2027 MIC2527 MIC2177 MIC1700B SY69952ZC SY87701V B1340 sy10s897 TSMC 0.18 um CMOS 2A243 bcd3 cmos tsmc 0.18 TSMC 0.25Um MIC29203BU Unisem B816E PDF

    P-Channel Depletion Mosfets

    Abstract: MBRS130L MIC2177 MIC2177BWM MIC2177YWM MIC2178 TPSD107M010R0100 TPSE226M035R0300
    Text: MIC2177 MIC2177 Micrel, Micrel Inc. MIC2177 2.5A Synchronous Buck Regulator General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. • 4.5V to 16.5V input voltage range


    Original
    MIC2177 MIC2177 200kHz 200mA M9999-031805 P-Channel Depletion Mosfets MBRS130L MIC2177BWM MIC2177YWM MIC2178 TPSD107M010R0100 TPSE226M035R0300 PDF

    MBRS130L

    Abstract: MBRS130LT3 MBRS140 MIC2177 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300
    Text: MIC2177 Micrel MIC2177 2.5A Synchronous Buck Regulator General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. • 4.5V to 16.5V input voltage range


    Original
    MIC2177 MIC2177 200kHz 200mA 20-Lead MBRS130L MBRS130LT3 MBRS140 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300 PDF

    MBRS130L

    Abstract: MBRS130LT3 MIC2177 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300
    Text: MIC2177 Micrel MIC2177 2.5A Synchronous Buck Regulator Final Information General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. • 4.5V to 16.5V input voltage range


    Original
    MIC2177 MIC2177 200kHz 200mA 20-Lead MBRS130L MBRS130LT3 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300 PDF

    Untitled

    Abstract: No abstract text available
    Text: MIC2177 Micrel MIC2177 2.5A Synchronous Buck Regulator Preliminary Information General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. The MIC2177 operates from a 4.5V to 16.5V input and


    Original
    MIC2177 MIC2177 200kHz pr408 20-Pin PDF

    MBRS130L

    Abstract: MBRS130LT3 MIC2177 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300
    Text: MIC2177 Micrel MIC2177 2.5A Synchronous Buck Regulator General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. • 4.5V to 16.5V input voltage range


    Original
    MIC2177 MIC2177 200kHz 200mA 20-Lead MBRS130L MBRS130LT3 MIC2177BWM MIC2178 TPSD107M010R0100 TPSE226M035R0300 PDF

    tsc4429

    Abstract: TSC7660 TSC7107 TSC7106 TSC7109 TSC7117 TSC1426 TSC7650 tsc4427 lt1174
    Text: Code Key: PU – PP – FE – SP – Plug-In Upgrade Pin-for-Pin Compatible Functional Equivalent Similar Part AMCC MAXIM S3005 S3006 S3017 S3023 S3024 S3025 S3026 S3027 S3028B S3033 S3040 S3043 S3044 S3047 S3049 S3050 MAX3690 MAX3680 MAX3690 MAX3675 MAX3675


    Original
    S3005 S3006 S3017 S3023 S3024 S3025 S3026 S3027 S3028B S3033 tsc4429 TSC7660 TSC7107 TSC7106 TSC7109 TSC7117 TSC1426 TSC7650 tsc4427 lt1174 PDF

    marking code E5 SMD ic sot23-5

    Abstract: Satellite DISEQC SWITCH 4x1 acer laptop motherboard circuit diagram acer laptop battery pinout nec tokin oe 128 schematic LG TV lcd backlight inverter ACER laptop schematic diagram HP COMPAQ MOTHERBOARD CIRCUIT diagram schematic acer lcd backlight inverter APC 5kv UPS CIRCUIT DIAGRAM
    Text: We hope that you will find this CD-ROM a helpful tool for selecting the best Maxim IC for your design. To the left, please find a menu of the documents contained on this CD-ROM. Click on each item for a more detailed list. All of the indexes, tables, and trees on this CD-ROM contain links to product data sheets. After you have viewed a


    Original
    MAX038 MAX038EVKIT 2001elec marking code E5 SMD ic sot23-5 Satellite DISEQC SWITCH 4x1 acer laptop motherboard circuit diagram acer laptop battery pinout nec tokin oe 128 schematic LG TV lcd backlight inverter ACER laptop schematic diagram HP COMPAQ MOTHERBOARD CIRCUIT diagram schematic acer lcd backlight inverter APC 5kv UPS CIRCUIT DIAGRAM PDF

    TL494 car charger schematic diagram

    Abstract: samsung galaxy s2 controller for PWM fan tl494 1A current to 0-5v voltage converter using LM317 SMD LD33 capacitor huang 2200uF 35V uc3843 flyback supply opto-coupler SMD MOSFET DRIVE 4606 schematic lcd inverter samsung sine wave inverter tl494 circuit diagram
    Text: Micrel Semiconductor 1997 Databook 1 _ General Information 2 _ Computer Peripherals 3 _ Low-Dropout Linear Voltage Regulators 4 _ Switch-Mode Voltage Regulators 5 _ MOSFET Drivers 6 _


    Original
    accurat49565 TL494 car charger schematic diagram samsung galaxy s2 controller for PWM fan tl494 1A current to 0-5v voltage converter using LM317 SMD LD33 capacitor huang 2200uF 35V uc3843 flyback supply opto-coupler SMD MOSFET DRIVE 4606 schematic lcd inverter samsung sine wave inverter tl494 circuit diagram PDF

    toshiba laptop schematic diagram

    Abstract: acer motherboard circuit diagram MAX1270 C source code MAX11871 mp 9141 es dc-dc lm324 pwm speed motor 220v DC MOTOR SPEED CONTROLLER schematic ACER laptop schematic diagram L-band down converter for satellite tuner wideband acer laptop MOTHERBOARD Chip Level MANUAL acer laptop motherboard circuit diagram
    Text: Welcome to the Maxim Full-Line Data Catalog. We hope you find this CD-ROM a helpful tool for selecting the best Maxim IC for your design. This CD-ROM contains: The Maxim Full-Line Data Catalog The menu to the left of this page lists the available documents. Use the small


    Original
    PDF

    soic 20 lead wide

    Abstract: 5a 12v regula 200khz power amplifier OCWM
    Text: MIC2177/2178 Monolithic Synchronous Buck Regulator Advance Information General Description Features M icrel’s MIC2177 and MIC2178 are 100kHz and 200kHz m onolithic synchronous buck step-down switching regula­ tors that feature integrated power MOSFETs and are are


    OCR Scan
    MIC2177/2178 MIC2177 MIC2178 100kHz 200kHz MIC2177/8 IC2177/8 soic 20 lead wide 5a 12v regula 200khz power amplifier OCWM PDF

    Untitled

    Abstract: No abstract text available
    Text: MIC2177 2.5A Synchronous Buck Regulator Advance Information General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, battery-powered applications. • 4.5V to 18V input voltage range


    OCR Scan
    MIC2177 MIC2177 200kHz IC2177 IC2177. 097J1 V-18V PDF

    Untitled

    Abstract: No abstract text available
    Text: MIC2177 2.5A Synchronous Buck Regulator Preliminary Information General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, bat­ tery-powered applications. • 4.5V to 16.5V input voltage range


    OCR Scan
    MIC2177 MIC2177 200kHz can63) 20-Pin PDF

    Untitled

    Abstract: No abstract text available
    Text: M ÌC2177 MIC2177 2.5A Synchronous Buck Regulator Advance Information General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, bat­ tery-powered applications. • 4.5V to 18V input voltage range


    OCR Scan
    C2177 MIC2177 MIC2177 200kHz 200mA 100mQ MIC2177. PDF

    Untitled

    Abstract: No abstract text available
    Text: MIC2177 2.5A Synchronous Buck Regulator General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, bat­ tery-powered applications. • 4.5V to 16.5V input voltage range • Dual-mode operation for high efficiency (up to 96%)


    OCR Scan
    MIC2177 MIC2177 200kHz 200mA 10Ornil 20-Pin PDF

    J 3305

    Abstract: ic lm 2177
    Text: General Description Features The Micrel MIC2177 is a 200kHz synchronous buck stepdown switching regulator designed for high-efficiency, bat­ tery-powered applications. • 4.5V to 16.5V input voltage range • Dual-mode operation for high efficiency (up to 96%)


    OCR Scan
    MIC2177 200kHz 300kHz. J 3305 ic lm 2177 PDF