
LM2678T-ADJ
SIMPLE SWITCHER High Efficiency 5A Step-Down Voltage Regulator
FEATURES
• Efficiency Up to 92%
• Simple and Easy to Design with (Using Off-The-Shelf External Components)
• 120 mΩ DMOS Output Switch
• 3.3V, 5V and 12V Fixed Output and Adjustable (1.2V to 37V ) Versions
• 50μA Standby Current When Switched OFF
• ±2% Maximum Output Tolerance Over Full Line and Load Conditions
• Wide Input Voltage Range: 8V to 40V
• 260 KHz Fixed Frequency Internal Oscillator
• −40 to +125°C Operating Junction Temperature Range
APPLICATIONS
• Simple to Design, High Efficiency (>90%) Step-Down Switching Regulators
• Efficient System Pre-Regulator for Linear Voltage Regulators
• Battery Chargers
Absolute Maximum Ratings (1) (2)
Input Supply Voltage | 45V | |
ON/OFF Pin Voltage | −0.1V to 6V | |
Switch Voltage to Ground (3) | −1V to VIN | |
Boost Pin Voltage | VSW + 8V | |
Feedback Pin Voltage | −0.3V to 14V | |
Power Dissipation | Internally Limited | |
ESD (4) | 2 kV | |
Storage Temperature Range | −65°C to 150°C | |
Soldering Temperature | Wave | 4 sec, 260°C |
Infrared | 10 sec, 240°C | |
Vapor Phase | 75 sec, 219°C |
(1) Absolute Maximum Ratings are limits beyond which damage to the
device may occur. Operating Ratings indicate conditions under which
of the device is ensured. Operating Ratings do not imply ensured
performance limits. For ensured performance limits and associated
test condition, see the Electrical Characteristics tables.
(2) If Military/Aerospace specified devices are required, please
contact the Texas Instruments Sales Office/Distributors for
availability and specifications.
(3) The absolute maximum specification of the 'Switch Voltage to
Ground' applies to DC voltage. An extended negative voltage limit
of -10V applies to a pulse of up to 20 ns, -6V of 60 ns and -3V of
up to 100 ns.
(4) ESD was applied using the human-body model, a 100pF capacitor
discharged through a 1.5 kΩ resistor into each pin.
Hot selling offer!!!
Part number | qty | D/C | Package | Code |
LTC3851EUD | 5000 | 17+ | QFN | LCXN |
LTC3851IUD | 5000 | 17+ | QFN | LCXN |
LTC3407EDD | 5000 | 17+ | QFN | LAGK |
LTC1992-2IMS8 | 5000 | 17+ | MSOP8 | LTZD |
LTC3807EUDC | 5000 | 17+ | QFN | LGSG |
LTC3807IUDC | 5000 | 17+ | QFN | LGSG |
LTC3807HUDC | 5000 | 17+ | QFN | LGSG |
LTC3807MPUDC | 5000 | 17+ | QFN | LGSG |
LT3755EUD-1 | 5000 | 17+ | QFN | LDMS |
LT3755IUD-1 | 5000 | 17+ | QFN | LDMS |
LT3650EDD-8.2 | 5000 | 17+ | QFN | LDXT |
LT3650IDD-8.2 | 5000 | 17+ | QFN | LDXT |
LTC3548EDD | 5000 | 17+ | QFN | LBNJ |
LTC3548IDD | 5000 | 17+ | QFN | LBNJ |
LTC6908CS6-1 | 5000 | 17+ | SOT | LTBYC |
LTC6908IS6-1 | 5000 | 17+ | SOT | LTBYC |
LTC6908HS6-1 | 5000 | 17+ | SOT | LTBYC |
LTC6908CS6-2 | 5000 | 17+ | SOT | LTBYD |
LTC6908IS6-2 | 5000 | 17+ | SOT | LTBYD |
LTC6908HS6-2 | 5000 | 17+ | SOT | LTBYD |
LTC3851EGN | 5000 | 17+ | SOT | 3851 |
LTC3851IGN | 5000 | 17+ | SSOP16 | 3851 |
LTC3851EMS | 5000 | 17+ | SSOP16 | 3851 |
LTC3851IMSE | 5000 | 17+ | SSOP16 | 3851 |
LTC3851EUD | 5000 | 17+ | SSOP16 | LCXN |
LTC3851IUD | 5000 | 17+ | QFN-16 | LCXN |
LT3971EMSE | 5000 | 16+ | MSOP10 | LTFJG |
LT3971HMSE | 5000 | 16+ | MSOP10 | LTFJG |
LT3971IMSE | 5000 | 16+ | MSOP10 | LTFJG |
LT3481IMSE | 5000 | 16+ | MSOP10 | LTBVW |
LTC6253CMS8 | 5000 | 17+ | MSOP8 | LTFRX |
LTC6253HMS8 | 5000 | 17+ | MSOP8 | LTFRX |
LTC6253IMS8 | 5000 | 17+ | MSOP8 | LTFRX |
LT3010EMS8E-5 | 5000 | 17+ | MSOP8 | LTAEF |
LT3010MPMS8E-5 | 5000 | 17+ | MSOP8 | LTAEF |
LT3685EMSE | 5000 | 16+ | MSOP10 | LTCYF |
LT3685IMSE | 5000 | 16+ | MSOP10 | LTCYF |
LT3973EMSE | 5000 | 16+ | MSOP10 | LTFYS |
LT3973HMSE | 5000 | 16+ | MSOP10 | LTFYS |
LT3973IMSE | 5000 | 16+ | MSOP10 | LTFYS |
LTC3532EMS | 5000 | 17+ | MSOP10 | LTBXS |
LT4356MPMS-1 | 5000 | 17+ | MSOP10 | LTFGD |
LT3580EMS8E | 5000 | 17+ | MSOP8 | LTDCJ |
LT3580HMS8E | 5000 | 17+ | MSOP8 | LTDCJ |
LT3580IMS8E | 5000 | 17+ | MSOP8 | LTDCJ |
LT3580MPMS8E | 5000 | 17+ | MSOP8 | LTDCJ |
LT1936IMS8E | 5000 | 17+ | MSOP8 | LTBRV |
LT1999CMS8-20 | 5000 | 17+ | MSOP8 | LTGVC |
LT1999IMS8-20 | 5000 | 17+ | MSOP8 | LTGVC |
LT1999HMS8-20 | 5000 | 17+ | MSOP8 | LTGVC |
LT1999MPMS8-20 | 5000 | 17+ | MSOP8 | LTGVC |
LT3684EMSE | 5000 | 16+ | MSOP10 | LTCVS |
LT3684IMSE | 5000 | 16+ | MSOP10 | LTCVS |
LTC6103CMS8 | 5000 | 17+ | MSOP8 | LTCMN |
LTC6103HMS8 | 5000 | 17+ | MSOP8 | LTCMN |
LTC6103IMS8 | 5000 | 17+ | MSOP8 | LTCMN |
LT3757EMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3757HMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3757IMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3757MPMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3971EMSE | 5000 | 17+ | MSOP8 | LTFJG |
LT3971HMSE | 5000 | 17+ | MSOP8 | LTFJG |
LT3971IMSE | 5000 | 17+ | MSOP8 | LTFJG |
LTC6104CMS8 | 5000 | 17+ | MSOP8 | LTCMP |
LTC6104HMS8 | 5000 | 17+ | MSOP8 | LTCMP |
LTC6104IMS8 | 5000 | 17+ | MSOP8 | LTCMP |
LT4356CMS-3 | 5000 | 17+ | MSOP10 | LTFFK |
LT4356HMS-3 | 5000 | 17+ | MSOP10 | LTFFK |
LT4356IMS-3 | 5000 | 17+ | MSOP10 | LTFFK |
LT1767EMS8E | 5000 | 17+ | MSOP8 | LTZG |
LT3970EMS | 5000 | 17+ | MSOP10 | LTFDB |
LT3970HMS | 5000 | 17+ | MSOP10 | LTFDB |
LT3970IMS | 5000 | 17+ | MSOP10 | LTFDB |
LTC6930CMS8-7.37 | 5000 | 17+ | MSOP8 | LTCLC |
LTC6930HMS8-7.37 | 5000 | 17+ | MSOP8 | LTCLC |
LTC6930IMS8-7.37 | 5000 | 17+ | MSOP8 | LTCLC |
LTC4444EMS8E-5 | 5000 | 16+ | MSOP8 | LTDPY |
LTC4444HMS8E-5 | 5000 | 16+ | MSOP8 | LTDPY |
LTC4444IMS8E-5 | 5000 | 16+ | MSOP8 | LTDPY |
LT3757EMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3757HMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3757IMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3757MPMSE | 5000 | 16+ | MSOP10 | LTDYX |
LT3680EMSE | 5000 | 16+ | MSOP10 | LTCYM |
LT3680HMSE | 5000 | 16+ | MSOP10 | LTCYM |
LT3680IMSE | 5000 | 16+ | MSOP10 | LTCYM |
LTC3805EMSE-5 | 5000 | 16+ | MSOP10 | LTDGX |
LTC3805HMSE-5 | 5000 | 16+ | MSOP10 | LTDGX |
LTC3805IMSE-5 | 5000 | 16+ | MSOP10 | LTDGX |
LTC3805MPMSE-5 | 5000 | 16+ | MSOP10 | LTDGX |
LT3973EMSE | 5000 | 16+ | MSOP10 | LTFYS |
LT3973HMSE | 5000 | 16+ | MSOP10 | LTFYS |
LT3973IMSE | 5000 | 16+ | MSOP10 | LTFYS |
LTC2355CMSE-14 | 5000 | 17+ | MSOP10 | LTCVY |
LTC2355IMSE-14 | 5000 | 17+ | MSOP10 | LTCVY |
LT3684EMSE | 5000 | 16+ | MSOP10 | LTCVS |
LT3684IMSE | 5000 | 16+ | MSOP10 | LTCVS |
LTC2494CUHF | 5000 | 1734+ | QFN38 | 2494 |
LTC2494IUHF | 5000 | 1734+ | QFN38 | 2494 |
Anterwell Technology Ltd.
King--- Originator of ANTERWELL, engaged in the IC electronics industry in 1998 and establish ANTERWELL in 2004. The company is located in Shenzhen Huaqiang North, the largest electronic center in Asia. Our main business is the technical development and electronic products import and export business. Currently, we have branches in Hong Kong and Malaysia.
Up to now. ANTERWELL have more than 1,000,000 types of electronic components in stock. ANTERWELL has become one of the top choices for purchasing IC chips both domestically and internationally. King is a senior IC chip expert, sales engineer, and mentor, leading an elite team with customer first, quality first, honesty, trustworthiness, and mutual benefit. We look forward to cooperate with you to create a better future!
ANTERWELL’s main products include semiconductors, resistors, capacitors, diodes, inductors, connectors, transistors, sensors, etc. Involving the major well-known brands such like: TI, XILINX, FAIRCHILD, STM, MICRON, MICROCHIP, TDK, SAMSUNG, ON, NXP,IR,ADI, ATMEL,VISHAY,LINEAR etc.
ANTERWELL adheres to the development concept and purpose of "direct stock offer, excellent quality, favorable price, and sincere service", which is deeply recognized by domestic and foreign customers. Based on the long-term development goal, ANTERWELL provides customers with standardized, professional, and diversified high-quality services through a strong market service network. ANTEWRELL has multiple skilled and capable executives with a professional QC team and excellent sales team to win the high support and trust of the vast customer base! We provide the best quality, price and service.
ANTERWELL will be your best Partner.