LTM4632 Datasheet PDF - Linear Technology

DESCRIPTION
   The LTM®4632 is an ultrathin triple output step-down µModule® (power module) regulator to provide complete power solution for DDR-QDR4 SRAM. Operating from a 3.6V to 15V input voltage, the LTM4632 supports two ±3A output rails, both sink and source capable, for VDDQ and VTT, plus a 10mA low noise reference VTTR output. Both VTT and VTTR track and are equal to VDDQ/2. Housed in a 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA packages, the LTM4632 includes the switching controller, power FETs, inductors and support components. Alternatively, the power module can also be configured as a two phase single ±6A output VTT. Only a few ceramic input and output capacitors are needed to complete the design.

FEATURES
â—¾ Complete DDR-QDR4 SRAM Power Solution
   Including VDDQ, VTT, VTTR (or VREF)
â—¾ Solution in 0.5cm2 (Dual-Sided PCB)
â—¾ Wide Input Voltage Range: 3.6V to 15V
â—¾ 3.3V Input Compatible with VIN Tied to INTVCC
â—¾ 0.6V to 2.5V Output Voltage Range
◾ Dual ±3A DC Output Current with Sink and Source
   Capability
◾ ±1.5%, ±10mA Buffered VTTR = VDDQ/2 Output
â—¾ 3A VDDQ + 3A VTT or Dual Phase Single 6A VTT
◾ ±1.5% Maximum Total Output Voltage Regulation
   Error Over Load, Line and Temperature
â—¾ Current Mode Control, Fast Transient Response
â—¾ External Frequency Synchronization
â—¾ Multiphase Parallelable with Current Sharing
◾ Selectable Burst Mode® Operation
â—¾ Overvoltage Input and Overtemperature Protection
â—¾ Power Good Indicator
◾ Ultrathin 6.25mm × 6.25mm × 1.82mm LGA and
   6.25mm × 6.25mm × 2.42mm BGA Packages

APPLICATIONS
â—¾ DDR Memory Power Supply
â—¾ General Purpose Point-of-Load Conversion
â—¾ Telecom, Networking and Industrial Equipment