VLF10045 datasheet(1/15 Pages) RICHTEK

Part #	VLF10045

Description	3A, 36V, 500kHz Current Mode Asynchronous Step-Down Converter

Download	15 Pages

Scroll/Zoom	100%

Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

Logo

1 / 15 page

RT2808A

®

DS2808A-00

November 2012

www.richtek.com

1

Copyright

is a registered trademark of Richtek Technology Corporation.

©

Simplified Application Circuit

Ordering Information

Note :

Richtek products are :

RoHS compliant and compatible with the current require-

ments of IPC/JEDEC J-STD-020.

Suitable for use in SnPb or Pb-free soldering processes.

Applications

Distributive Power Systems

Battery Charger

DSL Modems

Pre-regulator for Linear Regulators

3A, 36V, 500kHz Current Mode Asynchronous Step-Down

Converter

General Description

The RT2808A is a current mode asynchronous step-down

converter that achieves excellent load and line regulation.

Over a wide input voltage range from 5.5V to 36V and

supports output current up to 3A. The Current mode

operation provides fast transient response and eases loop

stabilization.

An adjustable soft-start reduces the stress on the input

source at startup. In shutdown mode, the regulator draws

only 25

μA of supply current. The RT2808A requires a

minimum number of readily available external

components, providing a compact solution. The RT2808A

provides protection functions inducing input under voltage

lockout, cycle-by-cycle current limit, short circuit

protection and thermal shutdown protection.

The RT2808A is available in the SOP-8 (Exposed Pad)

package.

Features

3A Output Current

Wide Operating Input Range 5.5V to 36V

Adjustable Output Voltage from 1.222V to 26V

High Efficiency up to 90%

Internal Compensation Minimizes External Parts

Count

Internal Soft-Start

110m

Ω

Ω Internal Power MOSFET Switch

25

μμμμμA Shutdown Mode

Fixed 500kHz Frequency

Thermal Shutdown

Cycle-by-Cycle Current Limit

Available In an SOP-8 (Exposed Pad) Package

RoHS Compliant and Halogen Free

Marking Information

RT2808AGSP : Product Number

YMDNN : Date Code

RT2808A

GSPYMDNN

Package Type

SP : SOP-8 (Exposed Pad-Option 2)

RT2808A

Lead Plating System

G : Green (Halogen Free and Pb Free)

VIN

EN

GND

BOOT

FB

SW

L

R1

R2

VOUT

Chip Enable

VIN

RT2808A

D1

CBOOT

COUT

CIN

Similar Part No. - VLF10045

Manufacturer	Part #	Datasheet	Description
Richtek Technology Corp...	VLF10045	276Kb / 15P	RT7237C
Richtek Technology Corp...	VLF10045	262Kb / 15P	3A, 36V, 500kHz Synchronous Step-Down Converter
TDK Electronics	VLF10045	39Kb / 1P	SMD Inductors(Coils) For Power Line(Wound, Magnetic Shielded)
	VLF10045T-100M4R3	39Kb / 1P	SMD Inductors(Coils) For Power Line(Wound, Magnetic Shielded)
	VLF10045T-101M1R3	39Kb / 1P	SMD Inductors(Coils) For Power Line(Wound, Magnetic Shielded)

More results

Similar Description - VLF10045

Manufacturer	Part #	Datasheet	Description
Richtek Technology Corp...	RT2805A	380Kb / 15P	5A, 36V, 500kHz Current Mode Asynchronous Step-Down Converter
	RT7272A	255Kb / 14P	3A, 36V, 500kHz Synchronous Step-Down Converter
	RT7272B	262Kb / 15P	3A, 36V, 500kHz Synchronous Step-Down Converter
	RT8279	303Kb / 14P	5A, 36V, 500kHz Step-Down Converter
Monolithic Power System...	MP2467	476Kb / 17P	2.5A, 36V, 500kHz Step-Down Converter
Eutech Microelectronics...	EUP3451	114Kb / 1P	3A,30V,500KHz Step-Down Converter
E-CMOS Corporation	EC5116	675Kb / 12P	3A, 40V Asynchronous Step-Down Converter
Richtek Technology Corp...	RT7263B	353Kb / 15P	3A, 21V 500kHz Synchronous Step-Down Converter
Monolithic Power System...	MP28266	284Kb / 14P	21V, 3A, 500kHz, Synchronous Step-Down Converter
Monolithic Power System...	MP4433	1Mb / 29P	36V, 3A, Low Quiescent Current, Synchronous, Step-Down Converter

More results

VLF10045 Datasheet(PDF) 1 Page - Richtek Technology Corporation

VLF10045 Datasheet(HTML) 1 Page - Richtek Technology Corporation

Similar Part No. - VLF10045

Similar Description - VLF10045

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Datasheet Download

Link URL