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LTM4651 Datasheet

LTM4651 Datasheet

EN55022B Compliant 58V, 24W Inverting-Output DC/DC μModule Regulator
Part No.: LTM4651
Page: 36 Pages
Size: 2162 KB
Manufacturer: Linear Technology
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Views: 2
Update Time: 2024-12-10 22:19:56
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LTM4651 Datasheet Applicable Part

Part No. Packing SPQ Marking MSL Pins Temp Range Package Description Buy
LTM4651EY#PBF Tray 170 LTM4651Y 3 77 -40°C ~ 125°C 77-Lead BGA (9mm x 15mm x 5.01mm)  
LTM4651IY#PBF Tray 170 LTM4651Y 3 77 -40°C ~ 125°C 77-Lead BGA (9mm x 15mm x 5.01mm)  
LTM4651IY Tray 170 LTM4651Y 3 77 -40°C ~ 125°C 77-Lead BGA (9mm x 15mm x 5.01mm)  
SPQ:Standard Pack Quantity;MSL:Moisture Sensitivity Level

LTM4651 Datasheet(PDF)

LTM4651 Datasheet(Picture)

LTM4651 Features

  • Complete Low EMI Switch Mode Power Supply
  • EN55022 Class B Compliant
  • Wide Input Voltage Range: 3.6V to 58V
  • Up to 4A Output Current
    • 24W Output from 12VIN to –24VOUT, PLOSS = 5W, TA = 60°C, tRISE = 60°C, 200LFM
  • Output Voltage Range: –26.5V ≤ VOUT– ≤ –0.5V
    • Safe Operating Area: VIN + |VOUT–| ≤ 58V
  • ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature (–40°C to 125°C)
  • Parallel and Current Share with Multiple LTM4651s
  • Constant-Frequency Current Mode Control
  • Frequency Synchronization Range: 250kHz to 3MHz
  • Power Good Indicator and Programmable Soft-Start
  • Overcurrent/Overvoltage/Overtemperature Protection
  • 15mm × 9mm × 5.01mm BGA Package

LTM4651 Applications

  • Avionics, Industrial Control and Test Equipment
  • Video, Imaging and Instrumentation
  • 48V Telecom and Network Power Supplies
  • RF Systems

LTM4651 Description

The LTM4651 is an ultralow noise, 58V, 24W DC/DC μModule® inverting topology regulator. It regulates a negative output voltage (VOUT) from a positive input supply voltage (VIN), and is designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components.

Included in the package are the switching controller, power MOSFETs, inductor, filters and support components. The LTM4651 can regulate VOUT to a value between –0.5V and –26.5V, provided that its input and output voltages adhere to the safe operating area criteria of the LTM4651: VIN + |VOUT| ≤ 58V. A switching frequency range of 250kHz to 3MHz is supported (400kHz default) and the module can synchronize to an external clock.

Despite being an inverting topology regulator, no level shift circuitry is needed to interface to the LTM4651’s RUN, PGOOD or CLKIN pins; those pins are referenced to GND.

The LTM4651 is offered in a 15mm × 9mm × 5.01mm BGA package with SnPb or RoHS compliant terminal finish.

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