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LTC3615-1 Datasheet

LTC3615-1 Datasheet

Dual 4MHz, 3A Synchronous Step-Down DC/DC Converter
Part No.: LTC3615-1
Page: 32 Pages
Size: 648 KB
Manufacturer: Linear Technology
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Views: 1
Update Time: 2023-12-15 09:58:27
DataSheet: Download

LTC3615-1 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTC3615EFE-1#PBF Tube 62 LTC3615FE-1 1 24 -40°C ~ 125°C 24-Lead Plastic TSSOP  
LTC3615EFE-1#TRPBF Reel 2500 LTC3615FE-1 1 24 -40°C ~ 125°C 24-Lead Plastic TSSOP  
LTC3615EFE-1#TRMPBF Reel 500 LTC3615FE-1 1 24 -40°C ~ 125°C 24-Lead Plastic TSSOP  
LTC3615IFE-1#PBF Tube 62 LTC3615FE-1 1 24 -40°C ~ 125°C 24-Lead Plastic TSSOP  
LTC3615IFE-1#TRPBF Reel 2500 LTC3615FE-1 1 24 -40°C ~ 125°C 24-Lead Plastic TSSOP  
LTC3615IFE-1#TRMPBF Reel 500 LTC3615FE-1 1 24 -40°C ~ 125°C 24-Lead Plastic TSSOP  
LTC3615HFE-1#PBF Tube 62 LTC3615FE-1 1 24 -40°C ~ 150°C 24-Lead Plastic TSSOP  
LTC3615HFE-1#TRPBF Reel 2500 LTC3615FE-1 1 24 -40°C ~ 150°C 24-Lead Plastic TSSOP  
LTC3615HFE-1#TRMPBF Reel 500 LTC3615FE-1 1 24 -40°C ~ 150°C 24-Lead Plastic TSSOP  
LTC3615MPFE-1#PBF Tube 62 LTC3615FE-1 1 24 -55°C ~ 150°C 24-Lead Plastic TSSOP  
LTC3615MPFE-1#TRPBF Reel 2500 LTC3615FE-1 1 24 -55°C ~ 150°C 24-Lead Plastic TSSOP  
LTC3615MPFE-1#TRMPBF Reel 500 LTC3615FE-1 1 24 -55°C ~ 150°C 24-Lead Plastic TSSOP  
LTC3615EUF-1#PBF Tube 91 36151 1 24 -40°C ~ 125°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615EUF-1#TRPBF Reel 2500 36151 1 24 -40°C ~ 125°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615EUF-1#TRMPBF Reel 500 36151 1 24 -40°C ~ 125°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615IUF-1#PBF Tube 91 36151 1 24 -40°C ~ 125°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615IUF-1#TRPBF Reel 2500 36151 1 24 -40°C ~ 125°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615IUF-1#TRMPBF Reel 500 36151 1 24 -40°C ~ 125°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615HUF-1#PBF Tube 91 36151 1 24 -40°C ~ 150°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615HUF-1#TRPBF Reel 2500 36151 1 24 -40°C ~ 150°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615HUF-1#TRMPBF Reel 500 36151 1 24 -40°C ~ 150°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615MPUF-1#PBF Tube 91 36151 1 24 -55°C ~ 150°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615MPUF-1#TRPBF Reel 2500 36151 1 24 -55°C ~ 150°C 24-Lead (4mm × 4mm) Plastic QFN  
LTC3615MPUF-1#TRMPBF Reel 500 36151 1 24 -55°C ~ 150°C 24-Lead (4mm × 4mm) Plastic QFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC3615-1 Datasheet(PDF)

LTC3615-1 Datasheet(Picture)

LTC3615-1 Features

  • High Efficiency: Up to 94%
  • Dual Outputs with 2 × 3A Output Current Capability
  • Low Output Ripple Burst Mode® Operation: IQ = 130μA
  • 2.25V to 5.5V Input Voltage Range
  • ±1% Output Voltage Accuracy
  • Output Voltages Down to 0.6V
  • Programmable Slew Rate at Switch Pins
  • Low Dropout Operation: 100% Duty Cycle
  • Shutdown Current ≤1μA
  • Adjustable Switching Frequency Up to 4MHz
  • Internal or External Compensation
  • Selectable Pulse-Skipping/Forced Continuous/ Burst Mode Operation with Adjustable Burst Clamp
  • Optional Active Voltage Positioning (AVP) with Internal Compensation
  • Selectable 140°/180° (LTC3615-1) Phase Shift Between Channels
  • Fixed Internal and Programmable External Soft-Start
  • Accurate Start-Up Tracking Capability
  • DDR Memory Mode IOUT = ±1.5A
  • Available in 4mm × 4mm QFN-24 and eTSSOP-24 Packages

LTC3615-1 Applications

  • Point-of-Load Supplies
  • Distributed Power Supplies
  • Portable Computer Systems
  • DDR Memory Termination
  • Handheld Devices

LTC3615-1 Description

The LTC3615-1 are dual 3A synchronous stepdown regulators using a current mode, constant-frequency architecture. The DC supply current is only 130μA (Burst Mode operation at no-load) while maintaining the output voltages, dropping to zero current in shutdown. The 2.25V to 5.5V input supply range makes the parts ideally suited for single Li-Ion applications. 100% duty cycle capability provides low dropout operation, which extends operating time in battery-operated systems.

The operating frequency is externally programmable up to 4MHz, allowing the use of small surface mount inductors. 140°/180° (LTC3615-1) of phase shift between the two channels can be selected to minimize input current ripple and output voltage ripple in a dual 3A or single 6A output configuration. Programmable slew rate limiting reduces EMI, and external synchronization can be applied up to 4MHz.

The internal synchronous switches increase efficiency and eliminate the need for external catch diodes, saving external components and board space.

The LTC3615-1 are offered in leadless 24-pin 4mm × 4mm QFN and thermally enhanced 24-pin eTSSOP packages.

LTC3615-1 Datasheet Related Parts

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