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See Technical Specifications

ACT6358 +BOM

High-Efficiency,40VStep-UpWLEDBiasSupplies

Manufacturer:

ACTIVE-SEMI
Mfr.Part #:

ACT6358
Datasheet:

ACT6358 Datasheet (PDF)
Package/Case:

QFN
Product Type:

Display Drivers
RoHS:
EDA/CAD Models:

Request Free CAD Models for ACT6358

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ACT6358 General Description

GENERAL DESCRIPTIONThe ACT6357 and ACT6358 step-up DC/DC converters drive white LEDs with an externally programmable 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. 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