ACT6358 datasheet(1/10 Pages) ACTIVE-SEMI

номер детали	ACT6358

подробное описание детали	High-Efficiency, 40V Step-Up WLED Bias Supplies

PDF	10 Pages

Scroll/Zoom	100%

производитель	ACTIVE-SEMI [Active-Semi, Inc]

домашняя страница	http://www.active-semi.com

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SIMPLIFIED APPLICATION CIRCUIT

ACT6357/ACT6358

High-Efficiency, 40V Step-Up WLED Bias Supplies

ACT6357

ACT6358

IN

EN

SW

OV

FB

G

BC

SS

OUT

Brightness Control

Enable

VIN

2.6V to 5.5V

Up to

10 WLEDs

L1

D1

ROV2

ROV1

RFB

COUT

CSS

CIN

FEATURES

• High-Efficiency DC/DC WLED Bias Supply

• Internal 40V, 0.55Ω Power MOSFET

• Up to 10 WLEDs per String

• Two Peak Current Options:

− ACT6357: 0.5A

− ACT6358: 1A

• Supports Analog and PWM LED Dimming

• Integrated Over-Voltage Protection (OVP)

• Programmable Soft-Start Function

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Tiny TDFN33-8 Package

APPLICATIONS

• TFT LCD Displays

• Smart Phones

• Portable Media Players

• GPS/Personal Navigation Devices

GENERAL DESCRIPTION

The ACT6357 and ACT6358 step-up DC/DC con-

verters drive white LEDs with an externally pro-

grammable constant current. These devices feature

integrated, 40V power MOSFETs that are capable

of driving up to ten white LEDs in series, providing

inherent current matching for uniform brightness.

WLED brightness adjustment is easily achieved via

a dual-function pin, which accepts either a PWM or

an analog dimming control signal.

The ACT6357 and ACT6358 feature a variety of

protection circuits, including integrated over voltage

protection (OVP), programmable soft-start, cycle-

by-cycle current limiting, and thermal shutdown pro-

tection circuitry.

The ACT6357 has 500mA current limit, while the

ACT6358 has 1A current limit. Both parts are avail-

able in a small 3mm x 3mm 8-pin TDFN33-8.

Rev0, 03-Feb-08

Advanced Product Information―All Information Subject to Change

Аналогичный номер детали - ACT6358

производитель	номер детали	датащи	подробное описание детали
Active-Semi, Inc	ACT6358	1Mb / 10P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev PrB, 30-Aug-07
	ACT6358	410Kb / 10P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 1, 15-Nov-12
	ACT6358	410Kb / 11P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 1, 15-Nov-12
	ACT6358NH-T	1Mb / 10P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev PrB, 30-Aug-07
	ACT6358NH-T	410Kb / 10P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 1, 15-Nov-12

More results

Аналогичное описание - ACT6358

производитель	номер детали	датащи	подробное описание детали
Active-Semi, Inc	ACT6357	1Mb / 10P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev PrB, 30-Aug-07
	ACT6359	417Kb / 8P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev PrA, 20-Nov-07
	ACT6360	254Kb / 9P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev PrA, 25-Dec-07
	ACT6359	236Kb / 8P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev0, 13-May-08
	ACT6360	262Kb / 9P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev0, 23-May-08
	ACT6359	209Kb / 8P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 1, 14-Feb-11
	ACT6360	233Kb / 9P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 1, 14-Feb-11
	ACT6357	410Kb / 10P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 1, 15-Nov-12
	ACT6357	410Kb / 11P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 1, 15-Nov-12
	ACT6359	230Kb / 9P	High-Efficiency, 40V Step-Up WLED Bias Supplies Rev 2, 22-Aug-13

More results

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