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Fairchild
Fairchild Semiconductor
Description : 1.5A LDO, DDR Bus Termination Regulator

Description
The FAN1654 is a low-cost bi-directional LDO specifically designed for terminating DDR memory bus. It can both sink and source up to 1A continuous, 1.5A peak, providing enough current for most DDR applications. Load regulation meets the JEDEC spec, VTT = (VDDQ/2) ± 40mV.

Features
• Sinks and sources 1A continuous, 1.5A peak
• -40°C to +125°C Operating Range
• Load regulation: (VDDQ/2) ± 40mV
• 5mA VREF buffer tracks VTT
• On-chip thermal limiting
• Power-enhanced eTSSOP™-16 package
• Low Current Shutdown Mode
• Output Short Circuit Protection

Applications
• DDR terminators

Description : 1.5A, Low-Voltage µCap LDO Regulator

General Description
The Micrel MIC37139 is a 1.5A low-dropout linear voltage regulator that provides a low-voltage, high-current output with a minimum of external components. It offers high precision, ultra-low dropout (500mV overtemperature), and low ground current.

Features
1.5A minimum guaranteed output current
• 500mV maximum dropout voltage overtemperature
    Ideal for 3.0V to 2.5V conversion
    Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion
• Stable with ceramic or tantalum capacitor
• Wide input voltage range:
    VIN: 2.25V to 6.0V
• +1.0% initial output tolerance
• Fixed 1.8V output voltage
• Excellent line and load regulation specifications
• Thermal shutdown and current-limit protection
• Reverse-leakage protection
• Low profile SOT-223 package

Applications
LDO linear regulator for low-voltage digital IC
• PC add-in cards
• High-efficiency linear power supplies
• SMPS post regulator
• Battery charger
• Set-top boxes
• Digital video recorders
• PowerPC® power supplies
• Multimedia and PC processor supplies

Description : 1.5A CMOS LDO

General Description
The AME8817 family of positive, linear regulators feature low quiescent current (35µA typ.) with low dropout voltage, making them ideal for battery applications.
Output voltages are set at the factory and trimmed to 1.5% accuracy.
These rugged devices have both thermal shutdown, and current fold-back to prevent device failure under the "worst" of operating conditions.
In applications requiring a low noise, regulated supply, place a 1000pF capacitor between Bypass and Ground.
An additional feature is a "Power Good" detector, which pulls low when the output is out of regulation.
The AME8817 is stable with an output capacitance of 4.7µF or greater.

Features
● Very Low Dropout Voltage
● Guaranteed 1.5A Output
● Accurate to within 1.5%
● 35µA Quiescent Current Typically
● Over-Temperature Shutdown
● Current Limiting
● Short Circuit Current Fold-back
● Noise Reduction Bypass Capacitor
● Power Good Output
● Power-Saving Shutdown Mode
● Space-Saving DDPAK-7 Package
● Low Temperature Coefficient

Applications
● Instrumentation
● Portable Electronics
● Wireless Devices
● PC Peripherals
● Battery Powered Widgets

Richtek
Richtek Technology
Description : 2.5A, Ultra-Low Dropout, Ultra-Fast CMOS LDO Regulator

General Description
The RT9009 is a high performance, 2.5A LDO regulator, offering extremely high PSRR and ultra-low dropout. Ideal for portable RF and wireless applications with demanding performance and space requirements.

Features
• Ultra Fast Response in Line/Load Transient
• < 1μA Shutdown Current
• Low Dropout : 520mV at 2A
• Wide Operating Voltage Ranges : 2.5V to 5.5V
• TTL-Logic-Controlled Shutdown Input
• Current Limiting Protection
• Thermal Shutdown Protection
• Low-ESR Ceramic Output Capacitor Required for Stability
• High Power Supply Rejection Ratio
• RoHS Compliant and 100% Lead (Pb)-Free

Applications
• Game Console
• CDMA/GSM Cellular Handsets
• Battery-Powered Equipment
• Laptop, Palmtops, Notebook Computers
• Hand-Held Instruments
• Mini PCI & PCI-Express Cards
• PCMCIA & New Cards
• Portable Information Appliances

Linear
Linear Technology
Description : 1.5A/0.5A Low Dropout Positive Regulators

1.5A/0.5A Low Dropout Positive Regulators

Omnirel
Omnirel Corp => IRF
Description : 7.5A, 5A, 3A, 1.5A LOW DROPOUT POSITIVE ADJUSTABLE REGULATORS

Three Terminal Adjustable Low Dropout TO-257/TO-258 Positive Voltage Regulators

DESCRIPTION
These three terminal positive adjustable voltage regulators are designed to provide 7.5A, 5A, 3A, and 1.5A 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.

FEATURES
• Operates Down to 1V Dropout, 1.5V @ Max. Current
• .015% Line Regulation
• .01% Load Regulation
• 1% Reference Voltage
• Hermetic TO-257 and TO-258 Isolated Packages
• Electrically Equivalent to LT1083, 84, 85 and 86

Part Name(s) : LT1963AES8
LINEAR_DIMENSIONS
Linear Dimensions Semiconductor
Description : 1.5A, Low Noise, Fast Transient Response LDO Regulators

DESCRIPTION
The LT ®1963A series are low dropout regulators optimized for fast transient response. The devices are capable of supplying 1.5A of output current with a dropout voltage of 340mV. Operating quiescent current is 1mA, dropping to <1µA in shutdown. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. In addition to fast transient response, the LT1963A regulators have very low output noise which makes them ideal for sensitive RF supply applications.

FEATURES
■ Optimized for Fast Transient Response
■ Output Current: 1.5A
■ Dropout Voltage: 340mV
■ Low Noise: 40µVRMS (10Hz to 100kHz)
■ 1mA Quiescent Current
■ No Protection Diodes Needed
■ Controlled Quiescent Current in Dropout
■ Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3.3V
■ Adjustable Output from 1.21V to 20V
■ <1µA Quiescent Current in Shutdown
■ Stable with 10µF Output Capacitor*
■ Stable with Ceramic Capacitors*
■ Reverse Battery Protection
■ No Reverse Current
■ Thermal Limiting
■ 5-Lead TO-220, DD, 3-Lead SOT-223 and 8-Lead SO Packages

APPLICATIONS
■ 3.3V to 2.5V Logic Power Supplies
■ Post Regulator for Switching Supplies

Richtek
Richtek Technology
Description : 1.2MHz 1.5A Synchronous Step-Down Converter with Two LDOs

General Description
The RT8023 combines two low dropout (LDO) linear regulators and a step-down converter with an input voltage range of 2.6V to 5.5V. Each output voltage is adjustable from 0.8V to 5V. With independent Enable and PowerGood pins for each regulator, it is easy to control the power up sequence, which is important in some applications.

Features
● Converter Input Voltage Range : 2.6V to 5.5V, LDO Input Voltage Range : 2.4V to 5.5V
● Low-Noise LDO for RF Application
● Ultra-Fast Response in Line/Load Transient
LDO Turn-On Time Less Than 40us
● Only 1μF LDO Output Capacitor Required for Stability
● Current Limiting Protection
1.5A, High Efficiency Step-Down Converter
● 1.2MHZ Constant Switching Frequency
● Low RDS(ON) Internal Switches
● No Schottky Diode Required
● 0.8V Reference Allows Low Output Voltage
● Low Dropout Operation : 100% Duty Cycle Internally Compensated
● < 2μA Shutdown Current
● Power Good Output Voltage Monitor
● Internal Soft-Start for PWM Converter
● Easy Power Sequence Control
● Over Temperature Protection
● Short Circuit Protection
● Thermally Enhanced 24-Lead WQFN Package
● RoHS Compliant and 100% Lead (Pb)-Free

Applications
● Portable Instruments
● Microprocessors and DSP Core Supplies
● Cellular Phones
● Wireless and DSL Modems
● PC Cards
● Digital Cameras

Description : 5A, Low Voltage μCap LDO Regulator

General Description
The Micrel MIC37500/01/02 is a 5A low-dropout linear voltage regulator that provides a low voltage, high current output with a minimum of external components. It offers high precision, ultra low dropout (500mV), and low ground current.

Features
• 5A minimum guaranteed output current
• 500mV maximum dropout voltage
    Ideal for 3.0V to 2.5V conversion
    Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion
• Stable with ceramic or tantalum capacitor
• Wide Input voltage range: VIN: 2.3V to 6.0V
• ±1.0% initial output tolerance
• Fixed and adjustable output voltages
• Excellent line and load regulation specifications
• Logic controlled shutdown
• Thermal shutdown and current limit protection
• Reverse-leakage protection
• Low profile S-Pak package

Applications
LDO linear regulator for low-voltage digital IC
• PC add-in cards
• High efficiency linear power supplies
• SMPS post regulator
• Battery charger

CALMIRCO
California Micro Devices Corp
Description : 150mA/1.2V CMOS LDO Regulator with Power Good

Product Description
The CM3112-12 is a low quiescent current (90uA) regulator that delivers up to 150mA of load current at a fixed 1.2V output. All the necessary circuitry has been included to deliver a 50Ω power good signal (open drain) which remains for 5ms after the output has exceeded 90% (typ) of its nominal level.

Features
LDO regulator with Power Good
• No capacitor required on the LDO output
• Power Good (PG) control signal
• Regulated 1.2V output
• 150mA output current
• Low quiescent operating current (90µA typical)
• "Zero" disable mode current
• Foldback current limiting protection
• Thermal shutdown protection
• SOT23-5 package
• Micrel MIC5258, MIC5268 compatible pinout
• Lead-free version available

Applications
• Pentium® 4 Motherboards
• PC Cards
• Peripheral Adapter Cards

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