GENERAL DESCRIPTION
The LP2950 and LP2951 are micropower voltage regulators ideally suited for use in battery-powered systems. These devices feature very low quiescent current (typ.75μA), and very low dropout voltage (typ.45mV at light loads and 380mV at 100mA) thus prolonging battery life. The quiescent current increases only slightly in dropout. The LP2950/LP2951 has positive transient protection up to 60V and can survive unregulated input transient up to 20V below ground.
The LP2950 and LP2951 were designed to include a tight initial tolerance (typ. 0.5%), excellent load and line regulation (typ. 0.05%), and a very low output voltage temperature coefficient, making these devices useful as a low-power voltage reference. The LP2950 is offered in the 3-pin TO-92 package. LP2951 is available in 8-pin plastic SOIC and DIP packages and offers three major additional system features. An error flag output warns of a low output voltage, often due to failing batteries on input. The LP2951 also features the logic-compatible shutdown input which enables the regulator to be switched on and off.
The LP2951 device may be pin-strapped for a 5V, 3.3V, or 3V output, or programmed from 1.24V to 29V with an external pair of resistors.

FEATURES
*5V, 3.3V, and 3V Versions at 100mA Output Current
*High Accuracy Output Voltage
*Extremely Low Quiescent Current
*Low Dropout Voltage
*Extremely Tight Load and Line Regulation
*Very Low Temperature Coefficient
*Current and Thermal Limiting
*Needs Minimum Capacitance (1μF) for Stability
*Unregulated DC Positive Transients 60V
ADDITIONAL FEATURES (LP2951 ONLY)
*1.24V to 29V Programmable Output
*Error Flag Warning of Voltage Output Dropout
*Logic Controlled Electronic Shutdown

APPLICATIONS
*Battery Powered Systems
*Portable Consumer Equipment
*Cordless Telephones
*Portable (Notebook) Computers
*Portable Instrumentation
*Radio Control Systems
*Automotive Electronics
*Avionics
*Low-Power Voltage Reference

LP2951, LP2950ACN-X, LP2950CN-X, LP2951ACP-X, LP2951CP-X

GENERAL DESCRIPTION
The AMS2950 and AMS2951 are micropower voltage regulators ideally suited for use in battery-powered systems. These devices feature very low quiescent current (typ.75μA), and very low dropout voltage (typ.45mV at light loads and 380mV at 150mA) thus prolonging battery life. The quiescent current increases only slightly in dropout. The AMS2950/AMS2951 has positive transient protection up to 60V and can survive unregulated input transient up to 20V below ground.
The AMS2950 and AMS2951 were designed to include a tight initial tolerance (typ. 0.5%), excellent load and line regulation (typ. 0.05%), and a very low output voltage temperature coefficient, making these devices useful as a low-power voltage reference.
The AMS2950 is offered in the 3-pin TO-92 package. AMS2951 is available in 8-pin plastic SOIC and DIP packages and offers three major additional system features. An error flag output warns of a low output voltage, often due to failing batteries on input. The AMS2951 also features the logic-compatible shutdown input which enables the regulator to be switched on and off. The AMS2951 device may be pin-strapped for a 5.0V, 3.3V, 3.0V or 2.5 output, or programmed from 1.24V to 29V with an external pair of resistors.

FEATURES
*5.0V, 3.3V, 3.0V and 2.5V Versions
*High Accuracy Output Voltage
*Extremely Low Quiescent Current
*Low Dropout Voltage
*Extremely Tight Load and Line Regulation
*Very Low Temperature Coefficient
*Current and Thermal Limiting
*Needs Minimum Capacitance (1mF) for Stability
*Unregulated DC Positive Transients 60V ADDITIONAL FEATURES (AMS2951 ONLY)
*1.24V to 29V Programmable Output
*Error Flag Warning of Voltage Output Dropout
*Logic Controlled Electronic Shutdown

APPLICATIONS
*Battery Powered Systems
*Portable Consumer Equipment
*Cordless Telephones
*Portable (Notebook) Computers
*Portable Instrumentation
*Radio Control Systems
*Automotive Electronics
*Avionics
*Low-Power Voltage Reference

AMS2951, AMS2950ACN-X, AMS2950CN-X, AMS2951CP-X

GENERAL DESCRIPTION
The AMS222 is a low-cost, oscillator intended to be used as an external clock for low-frequency applications. The device consists of a resistor-programmed oscillator with complementary output stage. An external resistor allows for output frequency range to be adjusted from 10kHz to 6MHz. The complimentary output stage is very useful in paralleling, switching regulators for doubling the output current. AMS222 is offered in SOT-23 5-leads package.

FEATURES
*Low-Cost, Oscillator/Clock Generator
*Simple User Programming
*Output frequency programmable from 10 kHz to 6MHz
*2.7 to 15V Single-Supply Operation
*Output frequency tolerance <1%
*Complementary output signal
*Break before make output signal

APPLICATIONS
*Switch-Mode Power Supplies
*Servers
*Printers
*Embedded Microcontrollers
*Industrial Controls
*Automotive Applications
*Toys

AMS222AM1

GENERAL DESCRIPTION
TThhee AMS1082 series of adjustable and fixed voltage regulators are designed to provide 10A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.5V at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry.
The AMS1082 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package and 3 lead TO-263 (Plastic DD).

FEATURES
*Three Terminal Adjustable or Fixed 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
*Output Current of 10A
*Operates Down to 1V Dropout
*Line Regulation: 0.015%
*Load Regulation: 0.1%
*TO-220 and TO-263 packages available

APPLICATIONS
*High Efficiency Linear Regulators
*Post Regulators for Switching Supplies
*Microprocessor Supply
*Battery Chargers
*Constant Current Regulators
*Notebook/Personal Computer Supplies
*Portable Instrumentation

AMS1082CT, AMS1082CM, AMS1082CT-1.5, AMS1082CM-1.5

GENERAL DESCRIPTION
The AMS3100-2.5 are two-terminal micropower band-gap voltage reference that feature a very low dynamic impedance and good temperature coefficient, operating over a 20μA to 20mA current range. AMS3100-2.5 is trimmed at wafer test level to optimize the temperature coefficient and tight output voltage tolerance. The advanced process technology used, makes the AMS3100-2.5 exceptionally tolerant of capacitive loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with widely varying supplies with excellent regulation. The extremely low power drain, makes these reference diodes useful for micropower circuitry. These voltage references can be used to make portable meters, regulators or general purpose analog circuitry with battery life approaching shelf life. Further more, the wide operating current allows it to replace older references with a tight tolerance part. Pin to pin compatible with other standard industry references, the AMS3100-2.5 offers the advantage of long term stability at low cost.
The AMS3100-2.5 is operating over a -40°C to 85°C temperature range and is available in the space saving SOT-23 package.

FEATURES
*±12 mV (±0.5%) max. initial tolerance (A grade)
*Operating Current 20μA to 20mA
*Low Voltage Reference 2.50V
*Max. 0.5Ω Dynamic Impedance (A grade)
*Low Temperature Coefficient
*SOT-23 Package Available
*Low cost

APPLICATIONS
*Battery Powered Systems
*Instrumentation
*A/D, D/A Converters
*Temperature measurement
*Current sources
*Notebook/Personal Computer
*Monitors/ VCR/ TV
*Pagers

AMS3100-2.5AM, AMS3100-2.5BM, AMS3100-2.5CM

GENERAL DESCRIPTION
The AMS2911 series of adjustable and fixed voltage regulators are designed to provide 1A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.5V at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry.
The AMS2911 devices are pin compatible with other three-terminal regulators and are offered in the 3 lead TO-220 package, in the 3Lead TO-263 (Plastic DD), in the TO-252 (DPAK) and in the low profile surface mount SOT-223 package.

FEATURES
*Three Terminal Adjustable or Fixed Voltages* 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, and 5.0V
*Output Current of 1A
*Operates Down to 1V Dropout
*Line Regulation: 0.2% Max.
*Load Regulation: 0.4% Max.
*Available in TO-220, TO-263, TO-252 and SOT-223 packages

APPLICATIONS
*High Efficiency Linear Regulators
*Post Regulators for Switching Supplies
*5V to 3.3V Linear Regulator
*Battery Chargers
*Active SCSI Terminators
*Power Management for Notebook
*Battery Powered Instrumentation

AMS2911CT, AMS2911CM, AMS2911CD

GENERAL DESCRIPTION
The AMS2910 series of adjustable and fixed voltage regulators are designed to provide 1A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.5V at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry.
The AMS2910 devices are pin compatible with other three-terminal regulators and are offered in the 3 lead TO-220 package, in the 3Lead TO-263 (Plastic DD), in the TO-252 (D PAK) and in the low profile surface mount SOT-223 package.

FEATURES
*Three Terminal Adjustable or Fixed Voltages* 1.5V, 1.8V, 2.5V, 2.85V, 3.3V, and 5.0V
*Output Current of 1A
*Operates Down to 1V Dropout
*Line Regulation: 0.2% Max.
*Load Regulation: 0.4% Max.
*Available in TO-220, TO-263, TO-252 and SOT-223 packages

APPLICATIONS
*High Efficiency Linear Regulators
*Post Regulators for Switching Supplies
*5V to 3.3V Linear Regulator
*Battery Chargers
*Active SCSI Terminators
*Power Management for Notebook
*Battery Powered Instrumentation

AMS2910CT, AMS2910CM, AMS2910CD

GENERAL DESCRIPTION
The AMS1086 series of adjustable and fixed voltage regulators are designed to provide 1.5A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.5V at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry.
The AMS1086 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package, 3 lead TO-263 (Plastic DD) and TO-252 (D PAK) package.

FEATURES
*Three Terminal Adjustable or Fixed Voltages 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
*Output Current of 1.5A
*Operates Down to 1V Dropout
*Line Regulation: 0.015%
*Load Regulation: 0.1%
*TO-220, TO-263 and TO-252 packages available

APPLICATIONS
*High Efficiency Linear Regulators
*Post Regulators for Switching Supplies
*Microprocessor Supply
*Battery Chargers
*Constant Current Regulators
*Notebook/Personal Computer Supplies
*Portable Instrumentation

AMS1086CT, AMS1086CM, AMS1086CD, AMS1086CT-1.5, AMS1086CM-1.5, AMS1086CD-1.5, AMS1086CT-1.8, AMS1086CM-1.8, AMS1086CD-1.8,
AMS1086CT-2.5, AMS1086CM-2.5, AMS1086CD-2.5, AMS1086CT-2.85, AMS1086CM-2.85, AMS1086CD-2.85, AMS1086CT-3.0, AMS1086CM-3.0, AMS1086CD-3.0, AMS1086CT-3.3, AMS1086CM-3.3, AMS1086CD-3.3,
AMS1086CT-3.5, AMS1086CM-3.5, AMS1086CD-3.5, AMS1086CT-5.0, AMS1086CM-5.0, AMS1086CD-5.0

GENERAL DESCRIPTION
The AMS1587 series of adjustable and fixed voltage regulators are designed to provide 3A output current and to operate down to 1V input-to-output differential. The dropout voltage of the device is guaranteed maximum 1.3V at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry.
The AMS1587 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package, 3 and 2 lead TO-263 (Plastic DD) and TO-252 (D PAK) package.

FEATURES
*Three Terminal Adjustable or Fixed Voltages 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
*Output Current of 3A
*Operates Down to 1V Dropout
*Fast Transient response
*Line Regulation: 0.015%
*TO-220, TO-263 and TO-252 packages available

APPLICATIONS
*High Efficiency Linear Regulators
*Post Regulators for Switching Supplies
*Microprocessor Supply
*Battery Chargers
*Constant Current Regulators
*Notebook/Personal Computer Supplies
*Portable Instrumentation

AMS1587CT, AMS1587CT-1.5, AMS1587CT-2.5, AMS1587CT-2.85, AMS1587CT-3.0, AMS1587CT-3.3, AMS1587CT-3.5, AMS1587CT-5.0, AMS1587CM, AMS1587CM-1.5, AMS1587CM-2.5, AMS1587CM-2.85, AMS1587CM-3.0, AMS1587CM-3.3, AMS1587CM-3.5, AMS1587CM-5.0 

GENERAL DESCRIPTION
AMS4122 is a dual switching regulator capable to deliver 2A for each channel.
Internally Compensated internal Soft Start makes AMS4122 one of the simplest and easiest switching regulators to use with the minimum external components.
Each regulator has independent hiccup current limit.
The Enable pin turns both devices on when a voltage of 2.5V or higher it is applied to EN pin. Since both devices share one single package the thermal protection turns off both devices when the die temperature exceeds approximately 135°C.
Both regulators are adjustable using a 0.600V reference for low output voltage settings.
The oscillators are 180° phase to each other to reduce the ripples on the input power supply and minimize the power dissipation on the package.
The device can be easily configured for Two Phase single output switching regulator capable of 5A output load.
By applying a 2.5V or greater on feedback pin of the second switching regulator the device enters in Two Phase Mode.
The first benefit of having a Two Phase device is reducing the output ripples by a factor of four as the single phase.
The second benefit is higher output current capability at overall low cost. AMS4122 combined with AMS4123 (2A Switching Regulator + 1A LDO in SO-8) makes complete solution for LCD TV power requirements.

FEATURES
* 2 Independent Asynchronous Buck Converters in SO-8
* Internally compensated
* Built in soft start
* Enable with Zero current shut down
* 400KHz switching per output
* Interleaved oscillator to reduced supply ripple
* Simply re-configures to 2 phase single output
* Up to 4A output in 2 phase mode
* Independent hiccup current limit

APPLICATIONS
* Audio Power Amplifiers
* Portable (Notebook) Computers
* Point of regulation for high performance electronics
* Consumer Electronics
* Desktop Computers
* LCD TVs and LCD monitors
* Distributed Power Systems
* Battery Chargers
* Pre-Regulator for Linear Regulators