Voltage Regulators - Xilinx MIcroBlaze Development Spartan-3E 1600E Kit User Manual

Appendix A: Schematics

Voltage Regulators

IC7 is a
to the FPGA's VCCINT supply input, 2.5V to the FPGA's VCCAUX supply input, and 3.3V
to other components on the board and to the FPGA's VCCO supply inputs on I/O Banks 0,
1, and 2.
Jumpers JP6 and JP7 provide a means to measure current across the FPGA's VCCAUX and
VCCINT supplies respectively.
IC8 is a Linear Technology LT3412 regulator, providing 2.5V to the on-board DDR SDRAM.
Resistors R65 and R67 create a voltage divider to create the termination voltage required
for the DDR SDRAM interface.
IC9 is a 1.8V supply to the Embedded USB download/debug circuit and to the CPLD's
VCCINT supply input.
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Texas Instruments TPS75003
MicroBlaze Development Kit Spartan-3E 1600 Edition User Guide
triple-output regulator. The regulator provides 1.2V
UG257 (v1.1) December 5, 2007
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