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

    LTC401 Search Results

    SF Impression Pixel

    LTC401 Price and Stock

    Analog Devices Inc LTC4013EUFD-PBF

    IC BATT CHG MULT-CHEM 6CEL 28QFN
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LTC4013EUFD-PBF Tube 7,963 1
    • 1 $10.11
    • 10 $7.136
    • 100 $10.11
    • 1000 $10.11
    • 10000 $10.11
    Buy Now

    Analog Devices Inc LTC4012IUF-2-PBF

    IC BAT CHG MULT-CHEM 1-4CL 20QFN
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LTC4012IUF-2-PBF Tube 5,167 1
    • 1 $10.11
    • 10 $7.136
    • 100 $10.11
    • 1000 $10.11
    • 10000 $10.11
    Buy Now

    Analog Devices Inc LTC4015EUHF-TRPBF

    IC BATT CHG MULT-CHEM 2CEL 38QFN
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LTC4015EUHF-TRPBF Cut Tape 4,996 1
    • 1 $15.39
    • 10 $10.994
    • 100 $8.6022
    • 1000 $7.5
    • 10000 $7.5
    Buy Now
    LTC4015EUHF-TRPBF Digi-Reel 4,996 1
    • 1 $15.39
    • 10 $10.994
    • 100 $8.6022
    • 1000 $7.5
    • 10000 $7.5
    Buy Now
    LTC4015EUHF-TRPBF Reel 2,500 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $7.5
    Buy Now

    Analog Devices Inc LTC4011CFE-TRPBF

    IC BATT CHG MULTI 1-16C 20TSSOP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LTC4011CFE-TRPBF Digi-Reel 4,099 1
    • 1 $14.48
    • 10 $10.303
    • 100 $8.0296
    • 1000 $6.9375
    • 10000 $6.9375
    Buy Now
    LTC4011CFE-TRPBF Cut Tape 4,099 1
    • 1 $14.48
    • 10 $10.303
    • 100 $8.0296
    • 1000 $6.9375
    • 10000 $6.9375
    Buy Now
    LTC4011CFE-TRPBF Reel 2,500 2,500
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 $6.9375
    Buy Now

    Analog Devices Inc LTC4012IUF-PBF

    IC BAT CHG MULT-CHEM 1-4CL 20QFN
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey LTC4012IUF-PBF Tube 699 1
    • 1 $9.83
    • 10 $6.923
    • 100 $9.83
    • 1000 $9.83
    • 10000 $9.83
    Buy Now

    LTC401 Datasheets (36)

    Part ECAD Model Manufacturer Description Curated Datasheet Type PDF
    LTC4010 Linear Technology High Efficiency Standalone Nickel Battery Charger Original PDF
    LTC4010CFE Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4010CFE#PBF Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4010CFE#TR Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4010CFE#TRPBF Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4010EFE Linear Integrated Systems High Efficiency Standalone Nickel Battery Charger Original PDF
    LTC4011 Linear Technology High Efficiency Standalone Nickel Battery Charger Original PDF
    LTC4011CFE Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4011CFE#PBF Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4011CFE#TR Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4011CFE#TRPBF Linear Technology High Efficiency Standalone Nickel Battery Charger; Package: TSSOP; No of Pins: 16; Temperature Range: 0°C to +70°C Original PDF
    LTC4011EFE Linear Technology High Efficiency Standalone Nickel Battery Charger Original PDF
    LTC4012CUF#PBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF
    LTC4012CUF#TRPBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF
    LTC4012CUF-1#PBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF
    LTC4012CUF-1#TRPBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF
    LTC4012CUF-2#PBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF
    LTC4012CUF-2#TRPBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF
    LTC4012CUF-3#PBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF
    LTC4012CUF-3#TRPBF Linear Technology LTC4012 - High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control; Package: 20-QFN; Temperature Range: 0 to +70°C Original PDF

    LTC401 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    IC 4012 DATASHEET

    Abstract: 4012 IC data sheet 2N7002 MARKING LTC4012 dc adaptor 30v HV Charger Reference Design LTC1769 LTC4012-3 ORing diode VC10
    Text: LTC4012-3 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control DESCRIPTION FEATURES n n n n n n n n n n n n n General Purpose Battery Charger Controller Efficient 550kHz Synchronous Buck PWM Topology ±0.5% Output Float Voltage Accuracy


    Original
    PDF LTC4012-3 550kHz 20-Pin LTC4413 LTC4414 LTC4416 40123f IC 4012 DATASHEET 4012 IC data sheet 2N7002 MARKING LTC4012 dc adaptor 30v HV Charger Reference Design LTC1769 LTC4012-3 ORing diode VC10

    LTC1700

    Abstract: 4441 equivalent
    Text: RELIABILITY DATA LTC1700 LTC1875/77/78/79 LTC3404/57/58/59/99 LTC3703/05/06/08/25 LTC4011/4260/4440/4441 8/21/2006 • OPERATING LIFE TEST PACKAGE TYPE SAMPLE SIZE OLDEST DATE CODE SOIC/SOT/MSOP SSOP/TSSOP QFN/DFN NEWEST DATE CODE 1,052 9943 861 0201 462 0421


    Original
    PDF LTC1700 LTC1875/77/78/79 LTC3404/57/58/59/99 LTC3703/05/06/08/25 LTC4011/4260/4440/4441 00-03-6209B. 4441 equivalent

    LTC4012-2

    Abstract: DC1256A LTC4012 LTC4012-1 charge 6v battery battery charger parasitic DC1223
    Text: DEMO C IR C U IT 1 25 6 A LTC4012-2 Q U IC K S TAR T G U IDE L T C 4 0 1 2-2 MU L T I C EL L L I-ION B AT T ER Y C H AR G ER B OAR D DESCRIPTION Demonstration circuit DC1256A is a single-battery standalone battery charger that can support any version of the


    Original
    PDF LTC4012-2 DC1256A LTC4012 LTC4012-2 DC1223A DC1256A. LTC4012-1 charge 6v battery battery charger parasitic DC1223

    circuit diagram for 48v automatic battery charger

    Abstract: B57620C103J062 block diagram of ic 4011 irt 1260 IC 4011 LTC4011 LT1511 LT1513 LTC1760 LTC4011CFE
    Text: LTC4011 High Efficiency Standalone Nickel Battery Charger Features Description n n n n n n n n n n n n n n n The LTC 4011 provides a complete, cost-effective nickel battery fast charge solution in a small package using few external components. A 550kHz PWM current source


    Original
    PDF LTC4011 550kHz LTC4411 LTC4412/ LTC4412HV LTC4413 4011fb circuit diagram for 48v automatic battery charger B57620C103J062 block diagram of ic 4011 irt 1260 IC 4011 LTC4011 LT1511 LT1513 LTC1760 LTC4011CFE

    Untitled

    Abstract: No abstract text available
    Text: LTC4012-3 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control DESCRIPTION FEATURES n n n n n n n n n n n n n General Purpose Battery Charger Controller Efficient 550kHz Synchronous Buck PWM Topology ±0.5% Output Float Voltage Accuracy


    Original
    PDF LTC4012-3 550kHz 20-Pin LTC4413 LTC4414 LTC4416 40123fb

    HP3458A

    Abstract: LTC4012-2 DC590A LTC2428 LTC2656BI
    Text: QUICK START GUIDE FOR LTC4012-2 DEM O CIRCUIT 13 9 7 A QUICK START GUIDE L TC2 6 5 6 B IUFD 16 -B IT, OCTAL RAIL DAC W ITH SP I IN TERFACE D ES C R IP T IO N Demonstration circuit 1397A features the LTC2656BIUFD Octal 16 bit DAC. This device establishes a new boarddensity benchmark for 16 bit DACs and advances performance standards for output drive, crosstalk and load


    Original
    PDF LTC4012-2 LTC2656BI DC1397A LTC2428 16ppme LTM4619EV HP3458A LTC4012-2 DC590A LTC2656BI

    LTC4012-2

    Abstract: LTC4012 LTC4012-1 QFN-20 PWM battery charger lead acid li-ion charge charge indicator Lead Acid Battery Charger Switchmode charge 6v battery load acid
    Text: News Release ⎜ www.linear.com 4A Multicell/Chemistry Battery Charger Controllers in Compact 16mm2 Package Require No Blocking Diode MILPITAS, CA – June 8, 2009 – Linear Technology Corporation introduces the LTC4012, LTC4012-1 and LTC4012-2, fast-charge 4A capable high efficiency switchmode battery charger


    Original
    PDF 16mm2 LTC4012, LTC4012-1 LTC4012-2, LTC4012 LTC4012-2 LTC4012-2 QFN-20 PWM battery charger lead acid li-ion charge charge indicator Lead Acid Battery Charger Switchmode charge 6v battery load acid

    1453a

    Abstract: LTC4012-2
    Text: QUICK START GUIDE FOR LTC4012-2 DEM O CIRCUIT 145 3 A QUICK START GUIDE L TM 46 19 EV 4.5 V -2 8 V , DUAL 4A STEP -DOW N µM ODUL E D ES C R IP T IO N Demonstration circuit 1453A features the LTM 4619EV, the high input voltage, high efficiency, high density, dual


    Original
    PDF LTC4012-2 4619EV, 4619EV 12Vin 28Vin DC1453A. 100mV/div) 100uF LTM4619EV 1453a LTC4012-2

    circuit diagram for 48v automatic battery charger

    Abstract: 10k ntc thermistor transistor bc 187 pin details 4010CFE LTC4010 NTC thermister 100K pwm charge nimh FE16 LT1511 LTC4010CFE
    Text: LTC4010 High Efficiency Standalone Nickel Battery Charger Features Description n n n n n n n n n n n n n n n The LTC 4010 provides a complete, cost-effective nickel battery fast charge solution in a small package using few external components. A 550kHz PWM current source


    Original
    PDF LTC4010 550kHz LTC4412HV LTC4413 LTC4414 4010fb circuit diagram for 48v automatic battery charger 10k ntc thermistor transistor bc 187 pin details 4010CFE LTC4010 NTC thermister 100K pwm charge nimh FE16 LT1511 LTC4010CFE

    DATA SHEET IC 4011

    Abstract: IC 4011 IC 4011 pin DETAIL 4011 IC data sheet pin diagram of ic 4011 EPCOS T 890 4011 analog IC P-channel Dual MOSFET VGS -25V IC 4011 details B57620C103J062
    Text: LTC4011 High Efficiency Standalone Nickel Battery Charger U FEATURES • ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Complete NiMH/NiCd Charger for 1 to 16 Cells No Microcontroller or Firmware Required 550kHz Synchronous PWM Current Source Controller


    Original
    PDF LTC4011 550kHz 20-Lead LTC4411 LTC4412/LTC4412HV LTC4413 4011f DATA SHEET IC 4011 IC 4011 IC 4011 pin DETAIL 4011 IC data sheet pin diagram of ic 4011 EPCOS T 890 4011 analog IC P-channel Dual MOSFET VGS -25V IC 4011 details B57620C103J062

    BAT 545

    Abstract: circuit diagram for 48v automatic battery charger NTC thermister 100K thermistor 10k 25c metal detector circuit with pcb 4011 48v dc 3A battery charger circuit diagram BAT 98 LTC4011 pwm charge nimh 4010p
    Text: Electrical Specifications Subject to Change LTC4010 High Efficiency Standalone Nickel Battery Charger U FEATURES • ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO The LTC 4010 provides a complete, cost-effective nickel battery fast charge solution in a small package using few


    Original
    PDF LTC4010 550kHz LTC4150 10-Pin LTC4412 LTC4413 4010p BAT 545 circuit diagram for 48v automatic battery charger NTC thermister 100K thermistor 10k 25c metal detector circuit with pcb 4011 48v dc 3A battery charger circuit diagram BAT 98 LTC4011 pwm charge nimh 4010p

    B57620C103J062

    Abstract: LTC4011 IC 4011 pin DETAIL Ni-MH charger IC 4011 pwm charge nimh LT1511 LT1513 LTC1760 LTC4011CFE
    Text: LTC4011 High Efficiency Standalone Nickel Battery Charger Features Description n n n n n n n n n n n n n n n The LTC 4011 provides a complete, cost-effective nickel battery fast charge solution in a small package using few external components. A 550kHz PWM current source


    Original
    PDF LTC4011 550kHz LTC4411 LTC4412/ LTC4412HV LTC4413 4011fb B57620C103J062 LTC4011 IC 4011 pin DETAIL Ni-MH charger IC 4011 pwm charge nimh LT1511 LT1513 LTC1760 LTC4011CFE

    CTX02-17314

    Abstract: LTC4011 dct20efd potential divider thermistor CTX02 IPC222 DCT20EFD-UXXS003 CTX02-17144 LT3750 MURS160
    Text: DESIGN FEATURES L High Efficiency Nickel Charger Operating to 34V is Easily Configured to Deliver a Safe Fast Charge by James A. McKenzie Introduction Accurate, Rock-Solid Fast Charge Termination The LTC4011 implements a complete fast charge control algorithm, best


    Original
    PDF LTC4011 CTX02-17314 dct20efd potential divider thermistor CTX02 IPC222 DCT20EFD-UXXS003 CTX02-17144 LT3750 MURS160

    DATA SHEET IC 4011

    Abstract: B57620C103J062 LTC4011 IC 4011 "Power Diode" NTC 20K thermistor 4011 ic 4011 IC data sheet ntc 10 0204 Automatic Voltage Regulator block diagram
    Text: LTC4011 High Efficiency Standalone Nickel Battery Charger U FEATURES • ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Complete NiMH/NiCd Charger for 1 to 16 Cells No Microcontroller or Firmware Required 550kHz Synchronous PWM Current Source Controller


    Original
    PDF LTC4011 550kHz 20-Lead I4411 LTC4412/LTC4412HV LTC4413 4011fa DATA SHEET IC 4011 B57620C103J062 LTC4011 IC 4011 "Power Diode" NTC 20K thermistor 4011 ic 4011 IC data sheet ntc 10 0204 Automatic Voltage Regulator block diagram

    Untitled

    Abstract: No abstract text available
    Text: LTC4010 High Efficiency Standalone Nickel Battery Charger FEATURES n n n n n n n n n n n n n n n n DESCRIPTION Complete NiMH/NiCd Charger for 1 to 16 Cells No Microcontroller or Firmware Required 550kHz PWM Current Source Controller No Audible Noise with Ceramic Capacitors


    Original
    PDF LTC4010 550kHz 16-Lead LTC4412HV LTC4413 LTC4414 4010fb

    1,2v Ni-MH battery overcharge protection circuit diagram

    Abstract: 48v, 20 amp battery charger circuit diagram LTC4010 NTC thermister 100K FE16 LT1511 LTC4010CFE Thermistor 15k 20 degree c g23 thermistor 10K ntc
    Text: LTC4010 U FEATURES • ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO The LTC 4010 provides a complete, cost-effective nickel battery fast charge solution in a small package using few external components. A 550kHz PWM current source


    Original
    PDF LTC4010 550kHz LTC4412HV LTC4413 LTC4414 4010fa 1,2v Ni-MH battery overcharge protection circuit diagram 48v, 20 amp battery charger circuit diagram LTC4010 NTC thermister 100K FE16 LT1511 LTC4010CFE Thermistor 15k 20 degree c g23 thermistor 10K ntc

    DC674A

    Abstract: 10 ohm 20W resistor LTC4011 pwm charge nimh 20W resistor NTC 203 thermistor 10k ohm CHARGER Ni-Mh 10 cells NTC 10 thermistor MOSFET battery charge
    Text: Quick Start Manual For Linear Technology Demo Circuit DC674A LTC4011 Stand-Alone NiMH/NiCd 2A Battery Charger Description 2. Demonstration circuit DC674A is a complete PWM Fast Battery Charger capable of charging 3, 4, 8 or 10 series connected NiMH or NiCd cells. Other cell


    Original
    PDF DC674A LTC4011 DC674A 10 ohm 20W resistor pwm charge nimh 20W resistor NTC 203 thermistor 10k ohm CHARGER Ni-Mh 10 cells NTC 10 thermistor MOSFET battery charge

    LT4012-3

    Abstract: LTC4012 1HLP-2525CZER4R7M11 TRANSISTOR mosfet 30V 40A LTC4009 LTC4011 LTC4012-3 VC10 a 1281 L1560
    Text: LTC4012-3 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control DESCRIPTION FEATURES n n n n n n n n n n n n n General Purpose Battery Charger Controller Efficient 550kHz Synchronous Buck PWM Topology ±0.5% Output Float Voltage Accuracy


    Original
    PDF LTC4012-3 550kHz 20-Pin LTC4413 LTC4414 LTC4416 40123fa LT4012-3 LTC4012 1HLP-2525CZER4R7M11 TRANSISTOR mosfet 30V 40A LTC4009 LTC4011 LTC4012-3 VC10 a 1281 L1560

    Untitled

    Abstract: No abstract text available
    Text: LTC4012/ LTC4012-1/LTC4012-2 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control DESCRIPTION FEATURES n n n n n n n n n n n n n General Purpose Battery Charger Controller Efficient 550kHz Synchronous Buck PWM Topology ±0.5% Output Float Voltage Accuracy


    Original
    PDF LTC4012/ LTC4012-1/LTC4012-2 550kHz 20-Pin 75mmcement LTC4413 LTC4414 LTC4416 4012fa

    40-10F

    Abstract: nicd charge circuit diagram for 48v automatic battery charger 10k ntc thermistor FE16 LT1511 LTC4010 LTC4010CFE C168NF 1510 rectifier
    Text: LTC4010 High Efficiency Standalone Nickel Battery Charger U FEATURES • ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO The LTC 4010 provides a complete, cost-effective nickel battery fast charge solution in a small package using few


    Original
    PDF LTC4010 550kHz LTC4412HV LTC4413 LTC4414 4010f 40-10F nicd charge circuit diagram for 48v automatic battery charger 10k ntc thermistor FE16 LT1511 LTC4010 LTC4010CFE C168NF 1510 rectifier

    Untitled

    Abstract: No abstract text available
    Text: LTC4011 High Efficiency Standalone Nickel Battery Charger FEATURES n n n n n n n n n n n n n n n n DESCRIPTION Complete NiMH/NiCd Charger for 1 to 16 Cells No Microcontroller or Firmware Required 550kHz Synchronous PWM Current Source Controller No Audible Noise with Ceramic Capacitors


    Original
    PDF LTC4011 550kHz 20-Lead LTC4412/ LTC4412HV LTC4413 4011fb

    LT4012

    Abstract: LTC1055 LTC4012 LTC4012-3 LTC4012IUF-3 VC10 IHLP-2525 VCLP-150mV 40123
    Text: LTC4012-3 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control Description Features General Purpose Battery Charger Controller Efficient 550kHz Synchronous Buck PWM Topology ±0.5% Output Float Voltage Accuracy Programmable Charge Current: 4% Accuracy


    Original
    PDF LTC4012-3 550kHz 20-Pin LTC4413 LTC4414 LTC4416 40123fb LT4012 LTC1055 LTC4012 LTC4012-3 LTC4012IUF-3 VC10 IHLP-2525 VCLP-150mV 40123

    metal detector circuit with pcb 4011

    Abstract: IC 4011 pin DETAIL 4011P block diagram of ic 4011 4011 analog IC automatic room power control circuit block diagra LTC4011 pin diagram of ic 4011 10k thermistor pin details and operations IC 3A 4011
    Text: Electrical Specifications Subject to Change LTC4011 High Efficiency Standalone Nickel Battery Charger U FEATURES • ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Complete NiMH/NiCd Charger for 1 to 16 Cells No Microcontroller or Firmware Required


    Original
    PDF LTC4011 550kHz 20-Lead 16-Pin LTC4100 LTC4150 10-Pin LTC4412 4011p metal detector circuit with pcb 4011 IC 4011 pin DETAIL 4011P block diagram of ic 4011 4011 analog IC automatic room power control circuit block diagra LTC4011 pin diagram of ic 4011 10k thermistor pin details and operations IC 3A 4011

    LTC4012-1

    Abstract: LTC4008-1 6.8uh LTC4012-2 4012fa LTC4009 LTC4012 LT4012 LTC1055 DC125
    Text: LTC4012/ LTC4012-1/LTC4012-2 High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control Description Features General Purpose Battery Charger Controller Efficient 550kHz Synchronous Buck PWM Topology ±0.5% Output Float Voltage Accuracy Programmable Charge Current: 4% Accuracy


    Original
    PDF LTC4012/ LTC4012-1/LTC4012-2 550kHz 20-Pin LTC4413 LTC4414 LTC4416 4012fa LTC4012-1 LTC4008-1 6.8uh LTC4012-2 4012fa LTC4009 LTC4012 LT4012 LTC1055 DC125