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LTM4632 3.6V to 15V Input, 1.5V/3A VDDQ, 0.75V/±3A VTT and 10mA VTTR Design

Figure 19. 3.6V to 15V Input, 1.5V/3A VDDQ, 0.75V/±3A VTT and 10mA VTTR Design

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 package, 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.