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LT1767-1.8 Datasheet

LT1767-1.8 Datasheet

Monolithic 1.5A, 1.25MHz Step-Down Switching Regulators
Part No.: LT1767-1.8
Page: 20 Pages
Size: 401 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-12-04 09:23:47
DataSheet: Download

LT1767-1.8 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT1767EMS8-1.8#PBF Tube 50 LTWG 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP  
LT1767EMS8-1.8#TRPBF Reel 2500 LTWG 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP  
LT1767EMS8-1.8#TRMPBF Reel 500 LTWG 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP  
LT1767EMS8E-1.8#PBF Tube 50 LTZH 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP, Exposed Pad  
LT1767EMS8E-1.8#TRPBF Reel 2500 LTZH 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP, Exposed Pad  
LT1767EMS8E-1.8#TRMPBF Reel 500 LTZH 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP, Exposed Pad  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT1767-1.8 Datasheet(PDF)

LT1767-1.8 Datasheet(Picture)

LT1767-1.8 Features

  • 1.5A Switch in a Small MSOP Package
  • Constant 1.25MHz Switching Frequency
  • High Power Exposed Pad (MS8E) Package
  • Wide Operating Voltage Range: 3V to 25V
  • High Efficiency 0.22Ω Switch
  • 1.2V Feedback Reference Voltage
  • Fixed Output Voltages of 1.8V
  • 2% Overall Output Tolerance
  • Uses Low Profile Surface Mount Components
  • Low Shutdown Current: 6μA
  • Synchronizable to 2MHz
  • Current Mode Loop Control
  • Constant Maximum Switch Current Rating at All Duty Cycles*

LT1767-1.8 Applications

  • DSL Modems
  • Portable Computers
  • Wall Adapters
  • Battery-Powered Systems
  • Distributed Power

LT1767-1.8 Description

The LT1767-1.8 is a 1.25MHz monolithic buck switching regulator. A high efficiency 1.5A, 0.22Ω switch is included on the die together with all the control circuitry required to complete a high frequency, current mode switching regulator. Current mode control provides fast transient response and excellent loop stability.

New design techniques achieve high efficiency at high switching frequencies over a wide operating range. A low dropout internal regulator maintains consistent performance over a wide range of inputs from 24V systems to Li-Ion batteries. An operating supply current of 1mA improves efficiency, especially at lower output currents. Shutdown reduces quiescent current to 6μA. Maximum switch current remains constant at all duty cycles. Synchronization allows an external logic level signal to increase the internal oscillator from 1.5MHz to 2MHz.

The LT1767-1.8 is available in an 8-pin MSOP fused lead-frame package and a low thermal resistance exposed pad package. Full cycle-by-cycle current limit and thermal shutdown are provided. High frequency operation allows the reduction of input and output filtering components and permits the use of chip inductors.

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