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.
Features
- 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
Applications
- DDR memory power supply
- General-purpose Point-of-Load conversion
- Telecom, networking, and industrial equipment
Typical Application
