Linear Technology Corporation introduces the LTM4608, a new member of the low voltage uModule DC/DC regulator family, the LTM4608 is a complete 8A DC/DC uModule regulator system with on-board DC/DC controller, power switches, inductor compensation and input/output bypass capacitors.

The LTM4608 operates from a supply range of 2.375V to 5.5V (6V max) and regulates an output voltage from 0.8V to 5V. The complete circuit is housed in a light weight (1.0g) tiny 9mm x 15mm LGA package with 2.8mm profile (height).

The compact size, low profile and light weight allow these devices to be mounted on the backside of a system printed circuit board, freeing room on the top side for FPGAs, ASICs, memory and other ICs. This family is used as a compact and high reliability DC/DC point-of-load solution for systems that need to convert low voltage input supplies such as 5V, 3.3V, 2.5V, or a Li-Ion battery to a lower output voltage without sacrificing space or performance.

With only 2.8mm height, LTM4608 is an ideal point-of-load DC/DC solution for systems that require low-profile packaging for more efficient air flow and easier heat removal from a circuit board.

For higher power designs, multiple 8A LTM4608 uModule regulators can be easily paralleled to deliver up to 60W to a load while evenly sharing the load current. The LTM4608 features a current mode architecture for fast transient response, short-circuit protection and excellent line and load regulation. In addition, the device offers tracking for controlled ramp-up, ramp-down and sequencing of the output voltage as well as output voltage margining for system level testing. Also, a power good output signal indicates when the voltage is in regulation.

Moreover, the LTM4608 offers a phase locked loop (PLL) for synchronization to an external clock to reduce undesirable frequency harmonics.

The LTM4608 is rated for operation from -40°C to 85°C temperature range and is RoHS compliant; however, it can be used with Pb-based solder paste as well as Pb-free solder paste. 1,000-piece pricing starts at $11.30 each.

Summary of Features: LTM4608 

• Complete DC/DC Regulator in a Compact 9m x 15mm x 2.8mm LGA Package 
  
• Input Voltage Range: 2.375V to 5.5V
  
• 8A (10A Peak) Output Current
  
• 0.6V to 5V Output
  
• Output Voltage Tracking & Margining
  
• PLL & Current Sharing Capability 

Contact information

Alastair Boyd, Area Sales Manager UK, Ireland, South Africa and Israel, Linear Technology (UK) Limited.
3 The Listons, Liston Road, Marlow, Buckinghamshire SL7 1FD
Tel: +44 (0)1628 477066  Fax: +44 (0)1628 478153  www.linear.com Email: aboyd@linear.com