1 Introduction

This user’s guide describes the characteristics, operation, and use of the TPS7H1101SP evaluation module (EVM). This EVM demonstrates the Texas Instruments TPS7H1101-SP and the TPS7H1101A-SP ultra-low dropout (LDO) regulator.

It is a radiation-hardened LDO linear regulator that uses a PMOS pass element configuration. It operates over a wide range of input voltage, from 1.5 V to 7 V while offering excellent PSRR. The TPS7H1101A-SP features a precise and programmable foldback current limit implementation with a very-wide adjustment range. To support the complex power requirements of FPGAs, DSPs, or microcontrollers, the TPS7H1101A-SP provides enable on and off functionality, programmable soft start, current sharing capability, and a Power Good open-drain output. This user’s guide includes setup instructions, a schematic diagram, a bill of materials (BOM), and PCB layout drawings for the EVM.