Part Number: ISL85003

Function: 3A, Synchronous Buck Regulator

Package: DFN-12 Type

Manufacturer: Intersil

Image and Pinouts:

 

Description

This is Highly Efficient 3A, Synchronous Buck Regulator.

The ISL85003 and ISL85003A are synchronous buck regulators with integrated high-side and low-side FET’s. The regulator can operate from an input voltage range of 4.5V to 18V while delivering a very efficient continuous 3A current. This is all delivered in a very compact 4x3mm DFN package.

This is designed on Intersil’s proprietary fab process that is designed to deliver very low R DS(ON)FET’s with an optimized current mode controller wrapped around it. The high- side NFET is designed to have an RDS(ON)of 65mΩwhile the low-side NFET is designed to have an R DS(ON)of 45mΩ.

With these two FET’s, the device delivers very high efficiency power to the load. The ISL85003 can automatically switch between DCM and CCM for light load efficiency in DCM. The switching frequency in CCM is internally set to 500kHz.

 

Features

1. Input voltage range 4.5V to 18V

2. Output voltage adjustable from 0.8V, ±1%

3. Efficiency up to 95%

4. Integrated boot diode with undervoltage detection

 

Applications:

1. Network and communication equipment

2. Industrial process control

3. Multifunction printers

4. Point-of-load regulators

5. Standard 12V rail supplies

6. Embedded computing

Other data sheets are available within the file:

003A, 003F, ISL85003AFRZ, ISL85003AFRZ-T

 

ISL85003 Datasheet PDF Download

Part Number: AMS1085CD

Function: 3A, Low Dropout Voltage Regulator

Package: TO-220, TO-263 and TO-252 Type

Manufacturer: Advanced Monolithic Systems Inc

Image and Pinouts:

 

Description

The AMS1085CD series of adjustable and fixed voltageregulators 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 AMS1085 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

1. Three Terminal Adjustable or Fixed Voltages : 1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V

2. Output Current of 3A

3. Operates Down to 1V Dropout

 

Applications:

1. High Efficiency Linear Regulators

2. Post Regulators for Switching Supplies

3. Microprocessor Supply

4. Battery Chargers

5. Constant Current Regulators

Other data sheets are available within the file:

AMS1085CD-1.5, AMS1085CD-2.5, AMS1085CD-2.85, AMS1085CD-3.0

AMS1085CD Datasheet PDF Download