Analog Devices Inc. LTM4632 Step-Down μModule® Regulators

Analog Devices Inc. LTM4632 Step-Down μModule® Regulators are triple-output regulators housed in an ultra-thin package. The LTM4632 includes the switching controller, power FETs, inductors, and support components. The LTM4632 Regulators offer a complete power solution for DDR-QDR™4 SRAM. From a 3.6V to 15V input voltage, the LTM4632 regulators support two ±3A output rails and a 10mA low noise reference VTTR output. Both output rails are sink and source capable of VDDQ and VTT. Designers can configure the power module as a two-phase single ±6A output VTT. To optimize performance, the devices support selectable Burst Mode operation (CH1 only) and output voltage tracking. Analog Devices Inc. LTM4632's high switching frequency and current-mode control architecture deliver a fast transient response to line and load changes while maintaining stable operation.


  • Complete DDR-QDR™4 SRAM power solution including VDDQ, VTT, VTTR (or VREF)
  • A solution in 0.5cm² (dual-sided PCB)
  • 3.6V to 15V input voltage range
  • 3.3V input compatible with VIN tied to INTVCC
  • 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
  • 3A VDDQ + 3A VTT or dual-phase single 6A VTT
  • ±1.5% maximum total output voltage regulation error over load, line, and temperature
  • Current mode control, fast transient response
  • External frequency synchronization
  • Multi-phase parallelable with current sharing
  • Selectable Burst Mode operation
  • Overvoltage input and overtemperature protection
  • Power good indicator
  • Ultra-thin 6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm × 2.42mm BGA packages


  • DDR memory power supply
  • General-purpose Point-of-Load conversion
  • Telecom, networking, and industrial equipment

Typical Application

Analog Devices Inc. LTM4632 Step-Down μModule® Regulators
Publicado: 2017-05-16 | Actualizado: 2023-07-22