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LTC7103 Datasheet

LTC7103 Datasheet

105V, 2.3A Low EMI Synchronous Step-Down Regulator with PassThru
Part No.: LTC7103
Page: 40 Pages
Size: 3741 KB
Manufacturer: Linear Technology
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Update Time: 2025-04-17 21:21:26
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LTC7103 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTC7103EUHE#PBF Tube 61 7103 1 36 -40°C ~ 125°C 36-Lead (5mm × 6mm) Plastic QFN  
LTC7103EUHE#TRPBF Reel 2500 7103 1 36 -40°C ~ 125°C 36-Lead (5mm × 6mm) Plastic QFN  
LTC7103IUHE#PBF Tube 61 7103 1 36 -40°C ~ 125°C 36-Lead (5mm × 6mm) Plastic QFN  
LTC7103IUHE#TRPBF Reel 2500 7103 1 36 -40°C ~ 125°C 36-Lead (5mm × 6mm) Plastic QFN  
LTC7103HUHE#PBF Tube 61 7103 1 36 -40°C ~ 150°C 36-Lead (5mm × 6mm) Plastic QFN  
LTC7103HUHE#TRPBF Reel 2500 7103 1 36 -40°C ~ 150°C 36-Lead (5mm × 6mm) Plastic QFN  
LTC7103MPUHE#PBF Tube 61 7103 1 36 -55°C ~ 150°C 36-Lead (5mm × 6mm) Plastic QFN  
LTC7103MPUHE#TRPBF Reel 2500 7103 1 36 -55°C ~ 150°C 36-Lead (5mm × 6mm) Plastic QFN  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTC7103 Datasheet(PDF)

LTC7103 Datasheet(Picture)

LTC7103 Features

  • Wide VIN Range: 4.4V to 105V (110V Abs Max)
  • Ultralow EMI/EMC Emissions: CISPR 25 Compliant
  • 2µA IQ When Regulating 48VIN to 3.3VOUT
  • Fast and Accurate Output Current Programming and Monitoring with No External RSENSE
  • Brick Wall Current Limit
  • Low Minimum On-Time: 40ns
  • Wide VOUT Range: 1V to VIN
  • 100% Maximum Duty Cycle Operation
  • Programmable Fixed Frequency: 200kHz to 2MHz
  • Eight, Pin-Selectable Fixed (1.2V to 15V) or Adjustable Output Voltages
  • Selectable Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads
  • PLL Synchronization to External Clock
  • EXTVCC LDO Powers Chip from VOUT = 3.3V to 40V
  • OPTI-LOOP® or Fixed Internal Compensation
  • Input and Output Overvoltage Protection
  • Thermally Enhanced (5mm × 6mm) QFN Package

LTC7103 Applications

  • Battery Chargers and CC/CV Supplies
  • Automotive and Military Systems
  • Industrial, Avionics and Heavy Equipment
  • Medical Instruments and Telecommunication Systems

LTC7103 Description

The LTC7103 is a high efficiency, monolithic synchronous step-down DC/DC converter utilizing a constant frequency, average current mode control architecture. It operates from an input voltage range of 4.4V to 105V and provides an adjustable regulated output voltage from 1V to VIN while delivering up to 2.3A of output current.

The LTC7103 features high frequency operation and a low minimum on-time that reduce inductor size and enable constant-frequency operation even at very high step-down ratios. In addition, the LTC7103 achieves the lowest possible dropout voltage with 100% maximum duty cycle operation. During light load operation, converter efficiency and output ripple can be optimized by selecting Burst Mode or pulse-skipping operation.

The LTC7103 includes accurate, high speed average current programming and monitoring without the need for an external sense resistor. Additional features include a bypass LDO to maximize efficiency, fixed or adjustable output voltage and loop compensation, and a wide array of protection features to enhance reliability.

LTC7103 Related Parts

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