The LTM4622 is a complete dual 2.5A step-down switching mode power module regulator in a tiny ultrathin 6.25mm x 6.25mm x 1.82mm LGA package. Included in the package are the switching controller, power FETs, inductor and support components. Operating over an input voltage range of 3.6V to 20V, the LTM4622 supports an output voltage range of 0.6V to 5.5V, set by a single external resistor. Its high efficiency design delivers dual 2.5A continuous, 3A peak, output current. Only a few ceramic input and output capacitors are needed.

The LTM4622 from Linear Technology, now part of Analog Devices, is a DC/DC step-down µModule® regulator in a small and ultrathin package. Only three capacitors and two resistors are required, and the solution occupies less than 1cm2 single-sided or 0.5cm2 on a double-sided PCB.

Housed in 6.25mm x 6.25mm x 1.82mm LGA and 6.25mm x 6.25mm x 2.42mm BGA packages, the LTM4622 includes the switching DC/DC regulator, MOSFETs, inductors and supporting circuitry. The ultrathin package allows the LTM4622 to be mounted on the backside of the PCB, freeing space on the topside for components such as memory and FPGAs.

This makes the LTM4622 suitable for height-restricted systems such as PCIe and advanced mezzanine cards (AMC) for AdvancedTCA carrier cards in embedded computing systems.

With two independent 2.5A (3A peak) outputs, the LTM4622 allows current sharing to provide up to 5A load current. Multiple devices can be current shared for higher output current. The device has an input supply voltage range of 3.6V to 20V and can also be configured to operate from a 3.3V input supply.

The LTM4622’s output voltage range is 0.6V and 5.5V. Output voltage total DC accuracy is guaranteed at ±1.5% including load and line regulation from –40°C to 125°C. Fault protection features include input overvoltage, output overcurrent and overtemperature protection.

This device supports selectable Burst Mode operation and output voltage tracking for supply rail sequencing. Its high switching frequency and current mode control enable a very fast transient response to line and load changes without sacrificing stability.

The LTM4622 is offered in tiny, ultrathin 6.25mm x 6.25mm x 1.82mm LGA and 6.25mm x 6.25mm x 2.42mm BGA packages and is available with SnPb (BGA) or RoHS compliant terminal finish. The LTM4622’s 1,000-piece price starts at $7.15 each.

The USA list pricing shown is for budgetary use only. International prices may differ due to local duties, taxes, fees and exchange rates.

 

For more information, visit www.linear.com/product/LTM4622

 

Summary of Features of the LTM4622:

  • Dual 2.5A (3A peak) or Single 5A Ultrathin µModule Step-Down Regulator
  • 3.3V to 20V Input; 0.6V to 5.5V Output
  • Small Package: 6.25mm x 6.25mm x 1.82mm LGA
  • ±1.5% Maximum Total DC Error Over Line, Load & Temperature (–40°C to 125°C)

Typical Application

 

 

 

 

 

 

 

 

 

 

 

 

 

Applications

  • General Purpose Point of Load Conversion
  • Telecom, Networking and Industrial Equipment
  • Medical Diagnostic Equipment
  • Test and Debug Systems

 

Linear Technology (UK) Limited

(Now part of Analog Devices)
Tel: +44 (0)1628 477066
 

E-mail: uksales@linear.com

Web site: www.linear.com

Website for product information:  http://www.linear.com/product/LTM4622