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LT3505 Datasheet

LT3505 Datasheet

1.2A, Step-Down Switching Regulator in 3mm × 3mm DFN
Part No.: LT3505
Page: 24 Pages
Size: 783 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-11-30 17:21:26
DataSheet: Download

LT3505 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LT3505EDD#PBF Tube 121 LCHB 1 8 -40°C ~ 85°C 8-Lead (3mm × 3mm) Plastic DFN  
LT3505EDD#TRPBF Reel 2500 LCHB 1 8 -40°C ~ 85°C 8-Lead (3mm × 3mm) Plastic DFN  
LT3505EDD#TRMPBF Reel 500 LCHB 1 8 -40°C ~ 85°C 8-Lead (3mm × 3mm) Plastic DFN  
LT3505IDD#PBF Tube 121 LCHC 1 8 -40°C ~ 125°C 8-Lead (3mm × 3mm) Plastic DFN  
LT3505IDD#TRPBF Reel 2500 LCHC 1 8 -40°C ~ 125°C 8-Lead (3mm × 3mm) Plastic DFN  
LT3505IDD#TRMPBF Reel 500 LCHC 1 8 -40°C ~ 125°C 8-Lead (3mm × 3mm) Plastic DFN  
LT3505EMS8E#PBF Tube 50 LTCNX 1 8 -40°C ~ 85°C 8-Lead Plastic MSOP  
LT3505EMS8E#TRPBF Reel 2500 LTCNX 1 8 -40°C ~ 85°C 8-Lead Plastic MSOP  
LT3505EMS8E#TRMPBF Reel 500 LTCNX 1 8 -40°C ~ 85°C 8-Lead Plastic MSOP  
LT3505IMS8E#PBF Tube 50 LTCNY 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP  
LT3505IMS8E#TRPBF Reel 2500 LTCNY 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP  
LT3505IMS8E#TRMPBF Reel 500 LTCNY 1 8 -40°C ~ 125°C 8-Lead Plastic MSOP  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LT3505 Datasheet(PDF)

LT3505 Datasheet(Picture)

LT3505 Features

  • Wide Input Range: 3.6V to 36V Operating, 40V Maximum
  • Up to 1.2A Output Current
  • Resistor-Programmable Fixed-Frequency Operation from 200kHz to 3MHz
  • Output Adjustable Down to 780mV
  • Short-Circuit Robust
  • Uses Tiny Capacitors and Inductors
  • Soft-Start
  • Low Shutdown Current: <2µA
  • Low VCESAT Switch: 350mV at 1A
  • Thermally Enhanced, Low Profile 3mm x 3mm DFN-8 and MSOP-8 Packages

LT3505 Applications

  • Automotive Battery Regulation
  • Industrial Control Supplies
  • Wall Transformer Regulation
  • Distributed Supply Regulation
  • Battery-Powered Equipment

LT3505 Description

The LT3505 is a current mode PWM step-down DC/DC converter with an internal 1.4A power switch. The wide operating input range of 3.6V to 36V (40V maximum) makes the LT3505 ideal for regulating power from a wide variety of sources, including unregulated wall transformers, 24V industrial supplies and automotive batteries. The oscillator can be programmed for high frequency operation allowing the use of tiny, low cost external components or it can be programmed for lower frequency operation to maximize efficiency.

Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The low current (<2µA) shutdown mode provides output disconnect, enabling easy power management in battery-powered systems.

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