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Part Name(s) : GS-R4840N ST-Microelectronics
STMicroelectronics
Description : 44W NEGATIVE SWITCHING REGULATOR View

DESCRIPTION
The GS-R4840N is a NEGATIVE input, NEGATIVE output SWITCHING voltage REGULATOR that can provide up to 44W output power without input to output isolation.

Part Name(s) : LM2596 LM2596TADJG LM2596TVADJG LM2596DSADJG LM2596DSADJR4G ON-Semiconductor
ON Semiconductor
Description : 3.0 A, STEP-DOWN SWITCHING REGULATOR View

3.0 A, STEP-DOWN SWITCHING REGULATOR

The LM2596 REGULATOR is monolithic INTEGRATED circuit ideally suited for easy and convenient design of a step−down SWITCHING REGULATOR (buck converter). It is capable of driving a 3.0 A load with excellent line and load regulation. This device is available in adjustable output version and it is internally compensated to minimize the number of external components to simplify the power supply design.
Since LM2596 converter is a switch−mode power supply, its efficiency is significantly higher in comparison with popular three−terminal linear REGULATORs, especially with higher input voltages. The LM2596 operates at a SWITCHING frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency SWITCHING REGULATORs. Available in a standard 5−lead TO−220 package with several different lead bend options, and D2PAK surface mount package.
The other features include a guaranteed 4% tolerance on output voltage within specified input voltages and output load conditions, and 15% on the oscillator frequency. External shutdown is included, featuring 80 A (typical) standby current. Self protection features include switch cycle−by−cycle current limit for the output switch, as well as thermal shutdown for complete protection under fault conditions.

Features
• Adjustable Output Voltage Range 1.23 V − 37 V
• Guaranteed 3.0 A Output Load Current
• Wide Input Voltage Range up to 40 V
• 150 kHz Fixed Frequency Internal Oscillator
• TTL Shutdown Capability
• Low Power Standby Mode, typ 80 A
• Thermal Shutdown and Current Limit Protection
• Internal Loop Compensation
• Moisture Sensitivity Level (MSL) Equals 1
• Pb−Free Packages are Available

Applications
• Simple High−Efficiency Step−Down (Buck) REGULATOR
• Efficient Pre−REGULATOR for Linear REGULATORs
• On−Card SWITCHING REGULATORs
• Positive to NEGATIVE Converter (Buck−Boost)
NEGATIVE Step−Up Converters
• Power Supply for Battery Chargers

Part Name(s) : LTC1876 LTC1876EG Linear
Linear Technology
Description : High Efficiency, 2-Phase, Dual Synchronous STEP-DOWN SWITCHING Controller and Step-Up REGULATOR View

DESCRIPTION

The LTC®1876 is a high performance triple output SWITCHING REGULATOR. It incorporates a dual STEP-DOWN SWITCHING controller that drives all N-channelsynchronous power MOSFET stages. A step-up REGULATOR with an internal 1A, 36V switch provides the third output.



FEATURES

STEP-DOWN Controller

■ Out-of-Phase Controllers Reduce Required Input Capacitance and Power Supply Induced Noise

■ Power Good Output Voltage Indicator

■ OPTI-LOOPTM Compensation Minimizes COUT

■ DC Programmed Fixed Frequency 150kHz to 300kHz

■ Wide VIN Range: 3.5V to 36V Operation

■ Very Low Dropout Operation: 99% Duty Cycle

■ Adjustable Soft-Start Current RAMPing

■ Latched Short-Circuit Shutdown with Defeat Option

■ Remote Output Voltage Sense and OV Protection

■ 5V and 3.3V Standby REGULATORs

■ Selectable Const. Freq. or Burst ModeTM Operation



Step-Up REGULATOR

■ High Operating SWITCHING Frequency of 1.2MHz

■ Low Internal VCESAT Switch: 400mV @ 1A, VIN = 3V

■ Wide VIN Range: 2.6V to 16V Operation

■ High Output Voltage: Up to 34V



APPLICATIONS

■ 3.3V Input STEP-DOWN Converter

■ Notebook and Palmtop Computers, PDAs

■ Battery-Operated Digital Devices



 


Part Name(s) : LM2594 LM2594DADJG LM2594DADJR2G LM2594PADJG ON-Semiconductor
ON Semiconductor
Description : 0.5 A, STEP-DOWN SWITCHING REGULATOR View

The LM2594 REGULATOR is monolithic INTEGRATED circuit ideally suited for easy and convenient design of a step−down SWITCHING REGULATOR (buck converter). It is capable of driving a 0.5 A load with excellent line and load regulation. This device is available in adjustable output version. It is internally compensated to minimize the number of external components to simplify the power supply design.
Since LM2594 converter is a switch−mode power supply, its efficiency is significantly higher in comparison with popular three−terminal linear REGULATORs, especially with higher input voltages. The LM2594 operates at a SWITCHING frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency SWITCHING REGULATORs. Available in a standard 8−Lead PDIP and 8−Lead Surface Mount packages.
The other features include a guaranteed 4% tolerance on output voltage within specified input voltages and output load conditions, and 15% on the oscillator frequency. External shutdown is included, featuring 50 A (typical) standby current. Self protection features include switch cycle−by−cycle current limit for the output switch, as well as thermal shutdown for complete protection under fault conditions.

Features
• Adjustable Output Voltage Range 1.23 V − 37 V
• Guaranteed 0.5 A Output Load Current
• Wide Input Voltage Range up to 40 V
• 150 kHz Fixed Frequency Internal Oscillator
• TTL Shutdown Capability
• Low Power Standby Mode, typ 50 A
• Thermal Shutdown and Current Limit Protection
• Internal Loop Compensation
• Moisture Sensitivity Level (MSL) Equals 1
• These are Pb−Free Devices

Applications
• Simple High−Efficiency Step−Down (Buck) REGULATOR
• Efficient Pre−REGULATOR for Linear REGULATORs
• On−Card SWITCHING REGULATORs
• Positive to NEGATIVE Converter (Buck−Boost)
NEGATIVE Step−Up Converters
• Power Supply for Battery Chargers


Part Name(s) : N2576G N2576SG N2576TG Niko
Niko Semiconductor
Description : 52 KHz 3A STEP-DOWN SWITCHING Voltage REGULATOR (SVR) TO-263, TO220 View

GENERAL DESCRIPTION

The N2576 Series SWITCHING voltage REGULATORs (SVR) are monolithic INTEGRATED circuits that provide all the active functions for a STEP-DOWN (buck) SWITCHING REGULATOR, Both series are capable of driving 3 A load respectively with excellent line and load regulation.



FEATURES

Pin compatible with industry products of LM2576 Series

Adjustable output versions

Wide output voltage range, 1.23V to 27V for adjustable output version

DC-to-DC buck converter requiring only 4 external parts

52 KHz fixed frequency internal oscillator

TTL shutdown capability, low power stand-by mode

High efficiency

Uses readily available standard inductors



APPLICATIONS

Simple high-efficiency STEP-DOWN (buck) REGULATOR

Positive to NEGATIVE converter (Inverting Buck-Boost)

Isolated Fly back Converter using minimum number of external parts

Powering portable instrument, Set-Top Box, LCD Monitor, Scanner, I.A, Easy PC

SMPS Post-REGULATOR


Part Name(s) : LV5768V SANYO
SANYO -> Panasonic
Description : 1-channel STEP-DOWN SWITCHING REGULATOR View

Overview
The LV5768V is a 1-channel STEP-DOWN SWITCHING REGULATOR.

Functions
• 1 channel STEP-DOWN SWITCHING REGULATOR controller.
• Frequency decrease function at pendent.
• Load-independent soft start circuit.
• ON/OFF function.
• Built-in pulse-by-pulse OCP circuit. It is detected by using ON resistance of an external MOS.
• Synchronous rectification
• Current mode control

Part Name(s) : TC2575 TC2575-3.3VAT TC2575-5.0VAT TC2575-12.0VAT TC2575VAT TelCom-Semiconductor
TelCom Semiconductor Inc => Microchip
Description : 1.0A STEP-DOWN SWITCHING REGULATOR View

GENERAL DESCRIPTION
The TC2575 series of REGULATORs are monolithic INTEGRATED circuits ideally suited for easy and convenient design of a step–down SWITCHING REGULATOR (buck converter). All circuits of this series are capable of driving a 1.0A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3V, 5.0V, 12V, and an adjustable output version.

FEATURES
■ 3.3V, 5.0V, 12V, and Adjustable Output Versions
■ Adjustable Version Output Voltage Range of 1.23V to 37V ±4% Max. Over Line and Load Conditions
■ Guaranteed 1.0 A Output Current
■ Wide Input Voltage Range; 4.75V to 40V
■ Requires Only 4 External Components
■ 52kHz Fixed Frequency Internal Oscillator
■ TTL Shutdown Capability, Low Power Standby Mode
■ High Efficiency
■ Uses Readily Available Standard Inductors
■ Thermal Shutdown and Current Limit Protection

APPLICATIONS
■ Simple and High-Efficiency STEP-DOWN (Buck) REGULATOR
■ Efficient Pre–REGULATOR for Linear REGULATORs
■ On–Card SWITCHING REGULATORs
■ Positive to NEGATIVE Converters (Buck–Boost)
NEGATIVE Step-Up Converters
■ Power Supply for Battery Chargers

Part Name(s) : N2576G-5 N2576SG-5 N2576TG-5 ETC
Unspecified
Description : 52 KHz 3A STEP-DOWN SWITCHING Voltage REGULATOR (SVR) TO-220, TO263 Lead-Free View

GENERAL DESCRIPTION

The N2576 Series SWITCHING voltage REGULATORs (SVR) are monolithic INTEGRATED circuits that provide all the active functions for a STEP-DOWN (buck) SWITCHING REGULATOR, Both series are capable of driving 3 A load respectively with excellent line and load regulation



FEATURES

Pin compatible with industry products of LM2576 Series

Fixed 5V output version

Wide output voltage range, 1.23V to 27V for adjustable output version

DC-to-DC buck converter requiring only 4 external parts

52 KHz fixed frequency internal oscillator

TTL shutdown capability, low power stand-by mode

High efficiency

Uses readily available standard inductors



APPLICATIONS

Simple high-efficiency STEP-DOWN (buck) REGULATOR

Positive to NEGATIVE converter (Inverting Buck-Boost)

Isolated Fly back Converter using minimum number of external parts

Powering portable instrument, Set-Top Box, LCD Monitor, Scanner, I.A, Easy PC

SMPS Post-REGULATOR


Part Name(s) : LV5769V LV5769VZ SANYO
SANYO -> Panasonic
Description : 1-channel STEP-DOWN SWITCHING REGULATOR View

Overview
The LV5769V/VZ is a 1-channel STEP-DOWN SWITCHING REGULATOR.

Functions
• 1 channel STEP-DOWN SWITCHING REGULATOR controller.
• Frequency decrease function at pendent.
• Load-independent soft start circuit.
• ON/OFF function.
• Built-in pulse-by-pulse OCP circuit. It is detected by using ON resistance of an external MOS.
• Synchronous rectification
• Current mode control

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