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Part Name(s) : AMS2501 AMS2502 DS2501
ADIMOS
Advanced Monolithic Systems Inc
Description : 1A VERY LOW DROPOUT VOLTAGE REGULATORS

GENERAL DESCRIPTION
The The AMS2501/AMS2502 series of adjustable and fixed low dropout VOLTAGE REGULATORS are designed to provide 1A output current. The dropout VOLTAGE of the device is 100mV at light loads and rising to 200mV at 500mA output current. A second input VOLTAGE of 1.2V or greater than the output is required to achieve this dropout. The AMS2501/AMS2502 can also be used as a single supply device by connecting pin1 and pin 8 together. In this case the dropout VOLTAGE will be typically 1.2V.
New features have been added to the AMS2501: a remote Sense pin is brought out virtually eliminating output VOLTAGE variations due to load changes. AMS2502 has an additional feature of an On/Off pin to keep the device in stand-by mode. The typical load regulation, measured at the Sense pin, for a load current step of 100mA to 1A is less than 1mV.

FEATURES
· Adjustable or Fixed Output 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
· Output Current of 1A
· Low Dropout, typ. 200mV at 500mA Output Current
· Fast Transient Response
· Remote Sense

APPLICATIONS
· High Efficiency Current REGULATORS
· Post REGULATORS for Switching Supplies
· Audio/Video/Modem Card Supply
· Adjustable Power Supply
· Notebook/Personal Computer Supplies

 

Part Name(s) : OM185-5SM OM186-5SM
IR
International Rectifier
Description : SURFACE MOUNT LOW DROPOUT FIXED VOLTAGE POSITIVE REGULATORS

DESCRIPTION
These three terminal positive fixed VOLTAGE REGULATORS are designed to provide 2.0 Amps and 1.0 Amp with higher efficiency than conventional VOLTAGE REGULATORS. The devices are designed to operate to 1 Volt input to output differential and the dropout VOLTAGE is specified as a function of load current. All devices are pin compatible with older three terminal REGULATORS. Supplied in easy-to-use hermetic surface mount packages.

FEATURES
• +5V Output VOLTAGE
• Operates Down To 1V Dropout
• .015% Line Regulation / .01% Load Regulation Typically
• Output VOLTAGE Trimmed to ±1%
• Hermetic Surface Mount Package
• Available Hi-Rel Screened

 

Description : Low Dropout Positive VOLTAGE REGULATORS

The IMP37 series of Low Dropout (LDO) three-terminal VOLTAGE REGULATORS feature guaranteed low dropout VOLTAGEs at currents up to 0.8A. The IMP37 regulator family dropout VOLTAGE is guaranteed to be 0.95V or lower at 0.8A. At 100mA, the maximum dropout VOLTAGE is 0.8V. Compared with “1117” type LDOs, the IMP37 has a 20% lower dropout VOLTAGE.

Key Features
◆ Low Dropout VOLTAGE
    – 0.8V maximum at 100mA
    – 0.95V maximum at 800mA
    – 20% lower dropout VOLTAGE than “1117” LDO REGULATORS
◆ Guaranteed Low Dropout VOLTAGE at Multiple Current Levels
◆ 1% Trimmed 2.5V, 3.0V and 3.3V Outputs
◆ Reduced Quiescent Current: 75µA Maximum
◆ Short Circuit and Thermal Protection
◆ Space Saving SOT-223 Surface Mount Package
◆ “1117” Pin Compatible

Applications
◆ High-efficiency linear power supplies
◆ Post regulator for switching supplies
◆ 5V to 3.3V linear REGULATORS
◆ USB hubs
◆ Battery chargers
◆ Routers, ISDN/DSL modems

Part Name(s) : LDO-512 LDO_512 LDO512
ST-Microelectronics
STMicroelectronics
Description : IP Library: Ultra Low Noise, High PSRR, Low Power, 30mA Very Low Dropout VOLTAGE REGULATORS

IP Library: Ultra Low Noise, High PSRR, Low Power, 30mA Very Low Dropout VOLTAGE REGULATORS

■ RF REGULATOR
■ VERY LOW DROPOUT VOLTAGE : 30mV
■ ULTRA LOW OUTPUT VOLTAGE NOISE
■ HIGH PSRR : 70dB
■ LOW STAND-BY CURRENT : 20µA
■ LOW QUIESCENT CURRENT : 150µA FULL LOAD
■ NO CURRENT IN POWER DOWN MODE
■ SHORT CIRCUIT PROTECTION
■ SMALL DECOUPLING CERAMIC CAPACITOR
■ BIPOLAR INPUT STAGE

TYPICAL APPLICATIONS
– Cellular and Cordless phones supplied by 1 cell Lithium-ion battery / 3 cells Ni-MH or Ni-Cd battery
– PDA (Personal Digital Assistant)
– Smart phone
– Portable equipment
– Supply for RF devices for cellular phone

MSK
M.S. Kennedy Corporation
Description : HIGH CURRENT, LOW DROPOUT SURFACE MOUNT VOLTAGE REGULATORS

DESCRIPTION:
The MSK5230 series VOLTAGE REGULATORS are available in +1.5V, +1.7V, +1.8V, +1.9V, +2.5V, +3.3V, +5.0V, and +12.0V output configurations. All boast ultra low dropout specifications due to the utilization of a super PNP output pass transistor with monolithic technology. Dropout VOLTAGEs of 350mV at 3 amps are typical in this configuration, which drives efficiency up and power dissipation down. Accuracy is guaranteed with a 1% maximum output VOLTAGE tolerance. The MSK5230 series is packaged in a space efficient 3 pin power surface mount ceramic package.

FEATURES:
• Hermetic Surface Mount Package
• Extremely Low Dropout VOLTAGE: 350mV @ 3 Amps
• Available in 1.5V, 1.7V, 1.8V, 1.9V, 2.5V, 3.3V, 5.0V and 12.0V
• On Board Thermal Shut Down
• Reverse Battery and Load Dump Protection
• Low Ground Current: 42mA Typical at Full Load
• 1% Maximum Guaranteed Accuracy
• Output Current to 3 Amps
• Alternate Output VOLTAGEs Available

TYPICAL APPLICATIONS
• High Efficiency, High Current Linear REGULATORS
• Constant VOLTAGE/Current REGULATORS
• System Power Supplies
• Switching Power Supply Post REGULATORS
• Battery Powered Equipment

Description : 1.5A LOW DROPOUT VOLTAGE REGULATORS

GENERAL DESCRIPTION
The AMS1501 series of adjustable and fixed low dropout VOLTAGE REGULATORS are designed to provide 1.5A output current to power the new generation of microprocessors. The dropout VOLTAGE of the device is 100mV at light loads and rising to 500mV at maximum output current. A second low current input VOLTAGE 1V or greater then the output VOLTAGE is required to achieve this dropout. The AMS1501 can also be used as a single supply device.

FEATURES
• Adjustable or Fixed Output
    1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
• Output Current of 1.5A
• Low Dropout, 500mV at 1.5A Output Current
• Fast Transient Response
• Remote Sense

APPLICATIONS
• High Current REGULATORS
• Post REGULATORS for Switching Supplies
• Adjustable Power Supply
• Notebook/Personal Computer Supplies

Description : 5A LOW DROPOUT VOLTAGE REGULATORS

GENERAL DESCRIPTION
The AMS1505 series of adjustable and fixed low dropout VOLTAGE REGULATORS are designed to provide 5A output current to power the new generation of microprocessors. The dropout VOLTAGE of the device is 100mV at light loads and rising to 500mV at maximum output current. A second low current input VOLTAGE 1V or greater then the output VOLTAGE is required to achieve this dropout. The AMS1505 can also be used as a single supply device.

FEATURES
• Adjustable or Fixed Output
    1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
• Output Current of 5A
• Low Dropout, 500mV at 5A Output Current
• Fast Transient Response
• Remote Sense

APPLICATIONS
• High Current REGULATORS
• Post REGULATORS for Switching Supplies
• Microprocessor Supply
• Adjustable Power Supply
• Notebook/Personal Computer Supplies

Richtek
Richtek Technology
Description : 1A Fixed and Adjustable Low Dropout Positive VOLTAGE REGULATORS

General Description
The RT9164A series of high performance positive VOLTAGE REGULATORS is designed for applications requiring low dropout performance at fully rated current. Additionally, the RT9164A series provides excellent regulation over variations in line and load. Outstanding features include low dropout performance at rated current, fast transient response, internal current-limiting, and thermal-shutdown protection of the output device. The RT9164A series of three terminal REGULATORS offers fixed and adjustable VOLTAGE options available in space-saving SOT-223, TO-252, and TO-263 packages.

Features
● Low Dropout Performance, 1.4V Max
● Full Current Rating Over Line and Temperature
● Fast Transient Response
● ±2% Output VOLTAGE Accuracy
● 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, and 3.5V Fixed Adjustable Output VOLTAGE
● SOT-223, TO-252, and TO-263 Packages
● RoHS Compliant and 100% Lead (Pb)-Free

Applications
● Active SCSI Termination
● Low VOLTAGE Microcontrollers
● Switching Power Supply Post-Regulator

MSK
M.S. Kennedy Corporation
Description : POSITIVE ADJUSTABLE, LOW DROPOUT SURFACE MOUNT VOLTAGE REGULATORS

DESCRIPTION:
The MSK 5231 VOLTAGE regulator is a positive adjustable regulator that with proper heatsinking, can provide 3 Amps of output current. Low dropout and impressive thermal characteristics help to improve efficiency and lower power dissipation. An accurate reference VOLTAGE allows for precise output adjustment. The MSK 5231 is packaged in a hermetic, space efficient 3 pin power surface mount ceramic package.

FEATURES:
• Hermetic Surface Mount Package
• Low Dropout VOLTAGE: 1.5V @ 2 Amps
• Adjustable Output VOLTAGE
• On Board Thermal Overload Protection
• Short Circuit Current Limiting
• Output Current to 3 Amps

TYPICAL APPLICATIONS
• High Efficiency, High Current Linear REGULATORS
• Constant Current REGULATORS
• System Power Supplies
• Switching Power Supply Post REGULATORS
• Battery Chargers

Part Name(s) : EZ1587
Semtech
Semtech Corporation
Description : 3.0 AMP LOW DROPOUT POSITIVE VOLTAGE REGULATORS

DESCRIPTION
The EZ1587 series of high performance positive VOLTAGE REGULATORS are designed for use in applications requiring low dropout performance at full rated current. Additionally, the EZ1587 series provides excellent regulation over variations in line, load and temperature.

FEATURES
• Low dropout performance, 1.3V max. for EZ1587
• Full current rating over line and temperature
• Fast transient response
• ±2% total output regulation over line, load and temperature
• Adjust pin current max. 90µA over temperature
• Fixed/adjustable output VOLTAGE
• Line regulation typically 0.005%
• Load regulation typically 0.05%
• TO-220 or TO-263 packages

APPLICATIONS
• Pentium® Processor supplies
• PowerPC™ supplies
• Other 1.3V to 5.7V microprocessor supplies
• Low VOLTAGE logic supplies
• Battery-powered circuitry
• Post regulator for switching supply

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