TPS73733DCQ

The TPS737xx series low-dropout (LDO) regulators use an NMOS pass element in a voltage-follower configuration. This topology is relatively insensitive to output capacitor value and equivalent series resistance (ESR), enabling a wide range of load configurations. Excellent load transient response is achieved even with a small 1μF ceramic output capacitor. The NMOS topology also enables ultra-low dropout voltage. The TPS737xx series leverages an advanced BiCMOS process to achieve high accuracy while delivering ultra-low dropout voltage and low ground pin current. Shutdown current consumption of less than 20nA makes these devices well-suited for portable applications. The devices are protected by thermal shutdown and foldback current limiting.

Applications

• Point-of-load regulation for DSPs, FPGAs, ASICs, and microprocessors
• Post-regulation for switching power supplies
• Portable and battery-powered devices

Key features

• Stable with ceramic output capacitors of 1μF or larger
• Input voltage range: 2.2V to 5.5V
• Ultra-low dropout: 130mV typical at 1A
• Excellent load transient response even with output capacitors as small as 1μF
• NMOS topology provides low reverse leakage current
• 1% initial accuracy
• 3% total accuracy over line, load, and temperature range
• I₀ typically less than 20nA in shutdown mode
• Thermal shutdown and current limiting for fault protection
• Multiple output voltage versions available; adjustable output: 1.20V to 5.5V with factory package-level programming for custom outputs