General Description
The HT1117 devices are a series of three-terminal high current low voltage regulators. They can deliver an output current of 1A and can accept input voltages up to 12V. The devices are available in both adjustable and fixed output voltage type with a range of 1.8V to 5.0V. Internal current limit and thermal protection circuits provide protection against overload conditions that could create excessive junction temperatures.

Features
*Output voltage ranges: Fixed range of 1.8V, 2.5V, 2.85V, 3.3V, 5.0V or adjustable type.
*High accuracy: 2%
*Low voltage drop: 1.1V (typ.), VOUT=5.0V at 1A
*Guaranteed output current: 1A
*Low quiescent current: 8mA (typ.)
*Integrated current limit & thermal protection circuits
*SOT-223 package

Applications
*Active SCSI terminations
*Post regulator for switching power supplies
*Low voltage microcontrollers
*Motherboard clock supplies
*Battery chargers

HT1117-ADJ, HT1117-18, HT1117-25, HT1117-28, HT1117-33, HT1117-50  

HT1117 - 1A General Purpose LDO

Description
GM6155 is an efficient linear voltage regulator with ultralow - noise output, very low dropout voltage (typically 17mV at light loads and 165mV at 50mA), and very low ground current
(600μA at 100mA output). GM6155 provides better than 1% initial accuracy.
Designed especially for hand-held, battery-powered devices, GM6155 includes a CMOS or TTL compatible enable/ shutdown control input. When shutdown, power consumption drops nearly to zero. Regulator ground current increases only slightly in dropout, further prolonging battery
life. Key features of GM6155 include a reference bypass pin to improve its excellent low-noise performance, reversed- battery protection, current limiting, and overtemperature shutdown.
The GM6155 is available in SOT-25 package.

Features
*Ultra low noise output
*High output voltage accuracy
*Extremely accurate output voltage
*Guaranteed 150mA output
*Low quiescent current
*Low dropout voltage
*Extremely tight load and line regulation
*Very low temperature coefficient
*Current and thermal limiting
*Reverse-battery protection
*"Zero" off-mode current
*Logic-controlled electronic enable

Application
*Cellular telephones
*Laptop, notebook, and palmtop computers
*Battery-powered equipment
*PCMCIA VCC and VPP regulation/ switching
*Consumer/ personal electronics
*SMPS post-regulator/ dc-to-dc modules
*High-efficiency linear power supplies

GM6155-AST25R, GM6155-2.5ST25R, GM6155-2.7ST25R, GM6155-2.8ST25R, GM6155-2.9ST25R, GM6155-3.0ST25R, GM6155-3.3ST25R, GM6155-3.6ST25R, GM6155-4.0ST25R, GM6155-4.2ST25R, GM6155-5.0ST25R  

GM6155 - 150mA LOW - NOISE LDO REGULATOR