MIC4685BRTR Micrel Semiconductor, MIC4685BRTR Datasheet

MIC4685BRTR

Manufacturer Part Number

MIC4685BRTR

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC4685BRTR.pdf (17 pages)

Specifications of MIC4685BRTR

Date_code

03+

Packing_info

S-PAK-07L

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MIC4685BRTR

Manufacturer:

MICREL/麦瑞

Quantity:

20 000

Current page: 1 of 17
Download datasheet (461Kb)

General Description

The MIC4685 is a high-efﬁciency 200kHz stepdown (buck)

switching regulator. Power conversion efﬁciency of above

85% is easily obtainable for a wide variety of applications.

The MIC4685 achieves 3A of continuous current in the

7-pin SPAK package.

The thermal performance of the SPAK allows it to replace

TO-220s and TO-263s (D

The SPAK saves board space with a 36% smaller footprint

than TO-263.

High-efﬁciency is maintained over a wide output current

range by utilizing a boost capacitor to increase the voltage

available to saturate the internal power switch. As a result

of this high-efﬁciency, only the ground plane of the PCB is

needed for a heat sink.

The MIC4685 allows for a high degree of safety. It has a

wide input voltage range of 4V to 30V (34V transient),

allowing it to be used in applications where input voltage

transients may be present. Built-in safety features include

over-current protection, frequency-foldback short-circuit

protection, and thermal shutdown.

The MIC4685 is available in a 7-pin SPAK package with a

junction temperature range of –40°C to +125°C.

Data sheets and support documentation can be found on

Micrel’s web site at www.micrel.com.

___________________________________________________________________________________________________________

Typical Application

SuperSwitcher is a trademark of Micrel, Inc

March 2007

8V to 30V

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (

33µF

35V

MIC4685_R

1.8V Output Converter

GND

4, Tab

PAKs) in many applications.

0.33µF/50V

40V

39mH

3.01k

6.49k

1.8V/3A

330µF

6.3V

OUT

Features

• Low 2mm proﬁle SPAK package

• 3A continuous output current

• Wide 4V to 30V input voltage range (34V transient)

• Fixed 200kHz PWM operation

• Over 85% efﬁciency

• Output voltage adjustable to 1.235V

• All surface mount solution

• Internally compensated with fast transient response

• Over-current protection

• Frequency foldback short-circuit protection

• Thermal shutdown

Applications

• Point-of-load power supplies

• Simple high-efﬁciency step-down regulators

• 5V to 3.3V/2A conversion

• 12V to 5V/3.3V/2.5V/1.8V 3A conversion

• Dual-output ±5V conversion

• Base stations

• LCD power supplies

• Battery chargers

408

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

±10%

68µF

10V

3A SPAK SuperSwitcher™

MIC4685_R

Buck Regulator

3A, 20V

GND

5V to 3.3V Converter

MIC4685

4, Tab

20V

0.33µF/50V

39µH

3.01k

1.78k

M9999-031407

3.3V/2A

330µF

6.3V

OUT

Related parts for MIC4685BRTR

Related keywords

MIC4685BRTR datasheet
MIC4685BRTR data sheet
MIC4685BRTR pdf datasheet
MIC4685BRTR component
MIC4685BRTR part
MIC4685BRTR distributor
MIC4685BRTR RoHS
MIC4685BRTR datasheet download