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

    MIC9131 Search Results

    SF Impression Pixel

    MIC9131 Price and Stock

    Microchip Technology Inc MIC9131YM

    IC REG CTRLR TELECOM 1OUT 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC9131YM Tube 96 1
    • 1 $4.84
    • 10 $4.84
    • 100 $4.84
    • 1000 $4.84
    • 10000 $4.84
    		Buy Now
    Avnet Americas MIC9131YM Tube 7 Weeks 96
    • 1 $4.84
    • 10 $4.84
    • 100 $3.66
    • 1000 $3.66
    • 10000 $3.66
    		Buy Now
    Mouser Electronics MIC9131YM 75
    • 1 $4.84
    • 10 $4.84
    • 100 $4.03
    • 1000 $3.92
    • 10000 $3.92
    		Buy Now
    Verical MIC9131YM 94 12
    • 1 -
    • 10 -
    • 100 $6.3485
    • 1000 $6.3485
    • 10000 $6.3485
    		Buy Now
    Newark MIC9131YM Bulk 875 1
    • 1 $5.03
    • 10 $4.62
    • 100 $4.13
    • 1000 $4.07
    • 10000 $4.07
    		Buy Now
    Microchip Technology Inc MIC9131YM 2,304
    • 1 $4.84
    • 10 $4.84
    • 100 $3.66
    • 1000 $3.54
    • 10000 $3.51
    		Buy Now
    Onlinecomponents.com MIC9131YM
    • 1 -
    • 10 $4.67
    • 100 $4.12
    • 1000 $3.86
    • 10000 $3.75
    		Buy Now
    TME MIC9131YM 94 1
    • 1 $6.28
    • 10 $4.98
    • 100 $4.65
    • 1000 $4.65
    • 10000 $4.65
    		Buy Now
    NAC MIC9131YM Tube 2,256 1
    • 1 $4.6
    • 10 $4.6
    • 100 $4.17
    • 1000 $3.82
    • 10000 $3.82
    		Buy Now
    Avnet Silica MIC9131YM 9 Weeks 48
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    EBV Elektronik MIC9131YM 8 Weeks 48
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Master Electronics MIC9131YM
    • 1 -
    • 10 $4.67
    • 100 $4.12
    • 1000 $3.86
    • 10000 $3.75
    		Buy Now

    Microchip Technology Inc MIC9131BM

    IC REG CTRLR TELECOM 1OUT 16SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC9131BM Bulk 240
    • 1 -
    • 10 -
    • 100 -
    • 1000 $2.91592
    • 10000 $2.91592
    		Buy Now

    Rochester Electronics LLC MIC9131BM

    TELECOM DC-TO-DC CONTROLLER
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC9131BM Bulk 166
    • 1 -
    • 10 -
    • 100 -
    • 1000 $1.81
    • 10000 $1.81
    		Buy Now

    Microchip Technology Inc MIC9131BQS

    IC REG CTRLR TELECOM 1OUT 16QSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC9131BQS Bulk 294
    • 1 -
    • 10 -
    • 100 -
    • 1000 $3.05194
    • 10000 $3.05194
    		Buy Now

    Microchip Technology Inc MIC9131YQS

    IC REG CTRLR TELECOM 1OUT 16QSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey MIC9131YQS Tube 98
    • 1 -
    • 10 -
    • 100 $4.36
    • 1000 $4.36
    • 10000 $4.36
    		Buy Now
    Avnet Americas MIC9131YQS Tube 8 Weeks 98
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Get Quote
    Mouser Electronics MIC9131YQS 166
    • 1 $5.23
    • 10 $5.23
    • 100 $4.36
    • 1000 $4.23
    • 10000 $4.23
    		Buy Now
    Newark MIC9131YQS Bulk 98
    • 1 -
    • 10 -
    • 100 $4.08
    • 1000 $4.08
    • 10000 $4.08
    		Buy Now
    Microchip Technology Inc MIC9131YQS
    • 1 $5.23
    • 10 $5.23
    • 100 $3.96
    • 1000 $3.82
    • 10000 $3.78
    		Buy Now
    Onlinecomponents.com MIC9131YQS
    • 1 -
    • 10 $5.04
    • 100 $4.45
    • 1000 $4.17
    • 10000 $4.05
    		Buy Now
    NAC MIC9131YQS Tube 98
    • 1 $4.97
    • 10 $4.97
    • 100 $4.51
    • 1000 $4.12
    • 10000 $4.12
    		Buy Now
    Master Electronics MIC9131YQS
    • 1 -
    • 10 $5.04
    • 100 $4.45
    • 1000 $4.17
    • 10000 $4.05
    		Buy Now
    Find more MIC9131 price and stock on Findchips.com

    MIC9131 Datasheets (17)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    MIC9131 Micrel Semiconductor High-Voltage, High-Speed Telecom Original PDF
    MIC9131 Micrel Semiconductor High-Voltage, High-Speed Telecom Original PDF
    MIC9131 Micrel Semiconductor High-Voltage, High-Speed Telecom DC-to-DC Controller Original PDF
    MIC9131BM Micrel Semiconductor PMIC - Voltage Regulators - Special Purpose, Integrated Circuits (ICs), IC CTRLR DC-DC PWM HV HS 16-SOIC Original PDF
    MIC9131BM Micrel Semiconductor High-Voltage, High-Speed Telecom Original PDF
    MIC9131BM Micrel Semiconductor Current Mode PWM, 12mA Start-up Supply Current, SOIC Original PDF
    MIC9131BM-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - Special Purpose - IC CTRLR DC-DC PWM HV HS 16-SOIC Original PDF
    MIC9131BQS Micrel Semiconductor PMIC - Voltage Regulators - Special Purpose, Integrated Circuits (ICs), IC CTRLR DC-DC PWM HV HS 16-QSOP Original PDF
    MIC9131BQS Micrel Semiconductor High-Voltage, High-Speed Telecom Original PDF
    MIC9131BQS Micrel Semiconductor Current Mode PWM, 12mA Start-up Supply Current, SOIC Original PDF
    MIC9131BQS-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - Special Purpose - IC CTRLR DC-DC PWM HV HS 16-QSOP Original PDF
    MIC9131YM Micrel Semiconductor PMIC - Voltage Regulators - Special Purpose, Integrated Circuits (ICs), IC CTRLR DC-DC PWM HV HS 16-SOIC Original PDF
    MIC9131YM Micrel Semiconductor High-Voltage, High-Speed Telecom DC-to-DC Controller Original PDF
    MIC9131YM-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - Special Purpose - IC CTRLR DC-DC PWM HV HS 16-SOIC Original PDF
    MIC9131YQS Micrel Semiconductor PMIC - Voltage Regulators - Special Purpose, Integrated Circuits (ICs), IC CTRLR DC-DC PWM HV HS 16-QSOP Original PDF
    MIC9131YQS Micrel Semiconductor High-Voltage, High-Speed Telecom DC-to-DC Controller Original PDF
    MIC9131YQS-TR Microchip Technology Integrated Circuits (ICs) - PMIC - Voltage Regulators - Special Purpose - IC CTRLR DC-DC PWM HV HS 16-QSOP Original PDF

    MIC9131 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    HM00-01604A

    Abstract: vishay capacitors 220uf 50v BI HM00 ES1D DIODE GRM44 100v CRCW060316R0 MM5Z15T1 LM4041DIM-1.2 MURATA GRM44 B530C
    Text: MIC9131 Evaluation Board Micrel MIC9131 Evaluation Board High Voltage, High Speed Telecom DC to DC Controller General Description Operation Operation requires a 36-72 V 2.5Amp dc power supply. Converter current limit is set at 22 Amps. The optimum orientation of the converter is to have the high power component side facing upwards for better exposure to forced air.


    Original     		PDF MIC9131 HM00-01604A vishay capacitors 220uf 50v BI HM00 ES1D DIODE GRM44 100v CRCW060316R0 MM5Z15T1 LM4041DIM-1.2 MURATA GRM44 B530C

    105k 250v

    Abstract: CTX04-15459 VJ1206Y105K MIC9131 CDRH104R-3R8NC 1N28 diode PS2703-1 fairchild CRCW08052002FRT1 CRCW08051002FRT1 1N28
    Text: MIC9131 Evaluation Board Micrel MIC9131 Evaluation Board High Voltage, High Speed Telecom DC to DC Controller General Description Requirements This evaluation board provides a platform for evaluating the MIC9131 Telecom power supply controller IC in a resonant


    Original     		PDF MIC9131 36VIN Spe71 105k 250v CTX04-15459 VJ1206Y105K CDRH104R-3R8NC 1N28 diode PS2703-1 fairchild CRCW08052002FRT1 CRCW08051002FRT1 1N28

    Untitled

    Abstract: No abstract text available
    Text: MIC9131 Micrel MIC9131 High-Voltage, High-Speed Telecom DC-to-DC Controller Preliminary Information General Description Features The MIC9131 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9131 features a high voltage start-up circuit that allows


    Original     		PDF MIC9131 MIC9131 sub-25ns 16-Pin

    8205 A mosfet

    Abstract: 501 mosfet transistor 1N5818 B320A MIC9130 MIC9131 MIC9131BM MIC9131BQS Si4884DY 8205* MOSFET
    Text: MIC9131 Micrel MIC9131 High-Voltage, High-Speed Telecom DC-to-DC Controller Final Information General Description Features The MIC9131 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9131 features a high voltage start-up circuit that allows


    Original     		PDF MIC9131 MIC9131 sub-25ns 16-Pin 8205 A mosfet 501 mosfet transistor 1N5818 B320A MIC9130 MIC9131BM MIC9131BQS Si4884DY 8205* MOSFET

    180VIN

    Abstract: No abstract text available
    Text: MIC9131 Micrel, Inc. MIC9131 High-Voltage, High-Speed Telecom DC-to-DC Controller General Description Features The MIC9131 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9131 features a high voltage start-up circuit that allows the device to


    Original     		PDF MIC9131 MIC9131 sub-25ns M9999-040805 180VIN

    Untitled

    Abstract: No abstract text available
    Text: MIC9131 Micrel MIC9131 High-Voltage, High-Speed Telecom DC-to-DC Controller Preliminary Information General Description Features The MIC9131 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9131 features a high voltage start-up circuit that allows


    Original     		PDF MIC9131 MIC9131 16-Pin

    single phase transformer design

    Abstract: DT 8210 IC 1N5818 B320A MIC9130 MIC9131 MIC9131BM MIC9131BQS Si4884DY TRANSFORMER 9V 500 ma
    Text: MIC9131 Micrel, Inc. MIC9131 High-Voltage, High-Speed Telecom DC-to-DC Controller General Description Features The MIC9131 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9131 features a high voltage start-up circuit that allows the device to


    Original     		PDF MIC9131 MIC9131 sub-25ns M9999-080206 single phase transformer design DT 8210 IC 1N5818 B320A MIC9130 MIC9131BM MIC9131BQS Si4884DY TRANSFORMER 9V 500 ma

    Untitled

    Abstract: No abstract text available
    Text: MIC9130 Micrel MIC9130 High-Voltage, High-Speed Telecom DC-to-DC Controller Preliminary Information General Description Features The MIC9130 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9130 features a high voltage start-up circuit that allows


    Original     		PDF MIC9130 MIC9130 16-Pin

    8205 mosfet

    Abstract: DT 8210 IC Amp. mosfet 1000 watt p 818 opto P-Channel Depletion Mosfets single phase transformer design MIC9130 depletion MOSFET n mosfet depletion 1A sink Si4800DY
    Text: MIC9130 Micrel, Inc. MIC9130 High-Voltage, High-Speed Telecom DC-to-DC Controller General Description Features The MIC9130 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9130 features a high voltage start-up circuit that allows the device to


    Original     		PDF MIC9130 MIC9130 sub-25ns M9999-040805 8205 mosfet DT 8210 IC Amp. mosfet 1000 watt p 818 opto P-Channel Depletion Mosfets single phase transformer design depletion MOSFET n mosfet depletion 1A sink Si4800DY

    mic5380

    Abstract: nu-horizons KSZ8863 KSZ8863MLL KSZ9021RN PQFP-128 footprint KSZ8863MLL EVAL KSZ8851SNL SFP EVAL BOARD MIC26950
    Text: Shortform Catalog July 2010 Shortform Catalog July 2010 2010 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF 747-NUHO M0009-070110 mic5380 nu-horizons KSZ8863 KSZ8863MLL KSZ9021RN PQFP-128 footprint KSZ8863MLL EVAL KSZ8851SNL SFP EVAL BOARD MIC26950

    KSZ8463

    Abstract: KSZ8463RLI sy88022al nu-horizons TO220-5 footprint sy88022 mode s transponders KSZ8463MLI ksz8441 torch height controller
    Text: Shortform Catalog April 2012 Generation Innovation Delivering Innovation Through Te c h n o l o g y f o r t h e D i g i t a l G e n e r a t i o n Shortform Catalog April 2012 2012 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF Precision635-524455 747-NUHO M0009-040212 KSZ8463 KSZ8463RLI sy88022al nu-horizons TO220-5 footprint sy88022 mode s transponders KSZ8463MLI ksz8441 torch height controller

    schematic diagram atx Power supply 500w

    Abstract: pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS
    Text: QUICK INDEX NEW IN THIS ISSUE! Detailed Index - See Pages 3-24 Digital Signal Processors, iCoupler , iMEMS® and iSensor . . . . . 805, 2707, 2768-2769 Connectors, Cable Assemblies, IC Sockets . . . . . . . . . . . 28-568 RF Connectors . . . . . . . . . . . . . . . . . . . . . . Pages 454-455


    Original     		PDF P462-ND P463-ND LNG295LFCP2U LNG395MFTP5U US2011) schematic diagram atx Power supply 500w pioneer PAL 012A 1000w inverter PURE SINE WAVE schematic diagram 600va numeric ups circuit diagrams winbond bios 25064 TLE 9180 infineon smsc MEC 1300 nu TBE schematic diagram inverter 2000w DK55 circuit diagram of luminous 600va UPS

    Untitled

    Abstract: No abstract text available
    Text: Shortform Catalog February 2013 Generation Innovation Delivering Innovation Through Te c h n o l o g y f o r t h e D i g i t a l G e n e r a t i o n Shortform Catalog February 2013 2013 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF M0009-021913

    SY55852

    Abstract: No abstract text available
    Text: Shortform Catalog September 2012 Generation Innovation Delivering Innovation Through Te c h n o l o g y f o r t h e D i g i t a l G e n e r a t i o n Shortform Catalog September 2012 2012 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF 747-NUHO M0009-090112 SY55852

    nu-horizons

    Abstract: KSZ8041FTL SFP KSZ8895 driver MIC5318 KSZ8895 27mhz rf amplifier MOSFET to220 micrel shortform KSZ8895f MICREL MIC marking LGA-76
    Text: Shortform Catalog February 2011 Shortform Catalog February 2011 2011 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF 747-NUHO M0009-021111 nu-horizons KSZ8041FTL SFP KSZ8895 driver MIC5318 KSZ8895 27mhz rf amplifier MOSFET to220 micrel shortform KSZ8895f MICREL MIC marking LGA-76

    lm2575 adj led

    Abstract: lm2576 4V 24v 12v 20A regulator flyback converter 2A 15V 24v 12v to 5v 20A regulator led lm2576 LM2576 BOOST CONVERTER 9V 20A voltage regulators MIC3809 FET SOT23 60V
    Text: Switch-Mode Voltage Regulator Selection Guide Buck Regulators Internal Switch Device VIN Range VOUT Output Current Frequency MIC4680 4V to 34V 3.3V, 5V, Adj. 1.3A 200KHz Package(s) Comments SO-8 MIC4681 4V to 30V Adj. 2A Peak 200KHz SO-8 MIC4684 4V to 30V


    Original     		PDF MIC4680 200KHz MIC4681 MIC4684 MIC4685 O-263 500KHz: lm2575 adj led lm2576 4V 24v 12v 20A regulator flyback converter 2A 15V 24v 12v to 5v 20A regulator led lm2576 LM2576 BOOST CONVERTER 9V 20A voltage regulators MIC3809 FET SOT23 60V

    ksz8863 EVAL BOARD

    Abstract: KSZ8863 nu-horizons KSZ9021RLI KSZ8041NLI KSZ9021GN transistors sot-223 06a KS8995MA ksz9021rl MIC3201
    Text: Shortform Catalog February 2010 Shortform Catalog February 2010 2010 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF 747-NUHO M0009-012910 ksz8863 EVAL BOARD KSZ8863 nu-horizons KSZ9021RLI KSZ8041NLI KSZ9021GN transistors sot-223 06a KS8995MA ksz9021rl MIC3201

    KSZ8041

    Abstract: LM2576 MTBF vcsel spice model MIC4129 mic44r22 ksz8692 MICREL MIC marking DFB laser diode spice model KSZ9021RLI KSZ8041TLI
    Text: Military Catalog May 2009 Dear Valued Customer, Micrel is an enduring DSCC certified company that has, for many years, provided Mil-Std-883B products in hermetic ceramic packages. We have also provided products governed by source controlled drawings SCD where baseline control is important. Our in-house, U.S.-based wafer


    Original     		PDF Mil-Std-883B M0014-051409 KSZ8041 LM2576 MTBF vcsel spice model MIC4129 mic44r22 ksz8692 MICREL MIC marking DFB laser diode spice model KSZ9021RLI KSZ8041TLI

    mlag

    Abstract: A NEW GENERATION OF HIGH PERFORMANCE MOSFET DRIVERS FEATURES HIGH CURRENT, HIGH SPEED OUTPUTS
    Text: Shortform Catalog August 2013 Generation Innovation Delivering Innovation Through Te c h n o l o g y f o r t h e D i g i t a l G e n e r a t i o n Shortform Catalog August 2013 2013 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF M0009-081213 mlag A NEW GENERATION OF HIGH PERFORMANCE MOSFET DRIVERS FEATURES HIGH CURRENT, HIGH SPEED OUTPUTS

    n mosfet depletion 1A sink

    Abstract: DT 8210 IC 8205 A mosfet zener diode 12v 0805
    Text: MIC9130 Micrel MIC9130 High-Voltage, High-Speed Telecom DC-to-DC Controller Preliminary Information General Description Features The MIC9130 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9130 features a high voltage start-up circuit that allows


    Original     		PDF MIC9130 MIC9130 sub-25ns 16-LeadSOIC 16-Lead n mosfet depletion 1A sink DT 8210 IC 8205 A mosfet zener diode 12v 0805

    ts 083

    Abstract: 8205 A mosfet mosfet 400 amp B330 FQD10N20 MBR0540 MIC9130 MIC9130BM MIC9130BQS MIC9131
    Text: MIC9130 Micrel MIC9130 High-Voltage, High-Speed Telecom DC-to-DC Controller Final Information General Description Features The MIC9130 is a current-mode PWM controller that efficiently converts –48V telecom voltages to logic levels. The MIC9130 features a high voltage start-up circuit that allows


    Original     		PDF MIC9130 MIC9130 sub-25ns 16-Lead ts 083 8205 A mosfet mosfet 400 amp B330 FQD10N20 MBR0540 MIC9130BM MIC9130BQS MIC9131

    MIC23163

    Abstract: MIC33163
    Text: Linear and Power Interactive Product Selector POWER MANAGEMENT LINEAR RF WIRELESS Linear Regulators Power Switching Comparators Receivers Switching Regulators Supervisors Op Amps Transmitters Power Modules Battery Chargers References Transceivers PMICs DDR/SCSI


    Original     		PDF AEC-Q100 -112dBm 20kbps 92MHz 434MHz 16-pin MIC23163 MIC33163

    str f 6267

    Abstract: SMD MOSFET DRIVE DATASHEET 4606 STR 6656 TRANSISTOR C 6090 8050 sot-23 STR 6267 str 6267 f scr ky 202 HALL SOT-23-4 mosfet 4800
    Text: Micrel Shortform Catalog February 2006 Shortform Catalog February 2006 2006 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any infringements of patents


    Original     		PDF M0009-021506 str f 6267 SMD MOSFET DRIVE DATASHEET 4606 STR 6656 TRANSISTOR C 6090 8050 sot-23 STR 6267 str 6267 f scr ky 202 HALL SOT-23-4 mosfet 4800

    LD33 VOLTAGE REGULATOR

    Abstract: LD33 VOLTAGE REGULATOR 3.3v NIKKO NR 9600 LD33 regulator TRANSISTOR si 6822 LD50 VOLTAGE REGULATOR st LD33 smd code marking ld33 LD33 VOLTAGE REGULATOR ST ld33 st
    Text: Shortform Catalog January 2004 Micrel Semiconductor • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel +1 408 944-0800 • fax +1 408 944-1000 Micrel Shortform Catalog January 2004 2004 Micrel, Inc. The information furnished by Micrel, Inc., in this publication is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use, nor any


    Original     		PDF Tiny0240 M0009-012804 LD33 VOLTAGE REGULATOR LD33 VOLTAGE REGULATOR 3.3v NIKKO NR 9600 LD33 regulator TRANSISTOR si 6822 LD50 VOLTAGE REGULATOR st LD33 smd code marking ld33 LD33 VOLTAGE REGULATOR ST ld33 st