Description

In a voltage-follower design, the TPS73701DRBR linear low-dropout (LDO) voltage regulators use an NMOS pass element. The output capacitor value and ESR are generally unaffected by this design, allowing for a wide range of load combinations. Even with a modest 1-μF ceramic output capacitor, load transient responsiveness is outstanding. In addition, the NMOS topology provides for very minimal dropout.

The TPS73701DRBR employs a sophisticated BiCMOS technology to achieve great precision while giving low ground pin current and low dropout voltages. When not activated, current consumption is less than 20 nA, making it perfect for portable applications. Thermal shutdown and a foldback current limit protect these devices.

Consider TI's TPS73701DRBR 1 percent overall accuracy, 1-A low-dropout voltage regulators for applications that demand higher output voltage accuracy.

Features

? Ultralow Dropout Voltage: 130 mV Typical at 1 A

? Stable With 1-μF or Larger Ceramic Output Capacitor

? Input Voltage Range: 2.2 V to 5.5 V

? 1% Initial Accuracy

? 3% Overall Accuracy Over Line, Load, and Temperature

? Less Than 20 nA Typical IQ in Shutdown Mode

? Excellent Load Transient Response—Even With Only 1-μF Output Capacitor

? NMOS Topology Delivers Low Reverse Leakage Current

? Thermal Shutdown and Current Limit for Fault Protection

? Available in Multiple Output Voltage Versions

– Adjustable Output: 1.20 V to 5.5 V

– Custom Outputs Available Using Factory Package-Level Programming

Applications

? Post-Regulation for Switching Supplies

? Point-of-Load Regulation for DSPs, FPGAs, ASICs, and Microprocessors

? Portable and Battery-Powered Equipment

? In Electrical Power Transmission and Distribution Systems

? In Computers and Other Sensitive Electronic Devices

? Motor Controller Circuits

? Driver Circuits