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| Categories | Power Management ICs | 
|---|---|
| Model Number: | LM2678T-ADJ | 
| Certification: | new & original | 
| Place of Origin: | original factory | 
| MOQ: | 10pcs | 
| Price: | Negotiate | 
| Payment Terms: | T/T, Western Union, Paypal | 
| Supply Ability: | 10000pcs | 
| Delivery Time: | 1 day | 
| Packaging Details: | Please contact me for details | 
| Description: | Buck Switching Regulator IC Positive Adjustable 1.21V 1 Output 5A TO-220-7 Formed Leads | 
| Input Supply Voltage: | 45V | 
| ON/OFF Pin Voltage: | −0.1V to 6V | 
| Boost Pin Voltage: | VSW + 8V | 
| Storage Temperature: | −65°C to 150°C | 
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.
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