Datasheet4U Logo Datasheet4U.com

AIC3643 - Built-in OVP White LED Step-Up Converter

Description

AIC3643 is a current-mode pulse-widthmodulation (PWM), step-up DC/DC converter designed to drive white LEDs with a constant current to provide backlight in hand-held devices.

Series connection of LEDs provides identical LED currents resulting in uniform brightness.

Features

  • Built-In Open Circuit Protection Over Voltage Protection Efficiency Up to 83% at VIN=4.2V, 3LEDs, ILED=20mA 1.2MHz Fixed Switching Frequency Drives Up to 5LEDs in series 2.5V to 5.5V Input Voltage Low Supply Current: 150μA Matches LED Current Requires Tiny Inductor and Capacitors TSOT-23-6, and SOT-23-6 Packages.

📥 Download Datasheet

Datasheet Details

Part number AIC3643
Manufacturer Analog Integrations
File Size 326.66 KB
Description Built-in OVP White LED Step-Up Converter
Datasheet download datasheet AIC3643 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
AIC3412 Low IQ High Light Load Efficiency Synchronous Boost Converter Analog Intergrations Corporation
AIC3413 Step-Down Converter Analog Intergrations Corporation
AIC3415 1.2MHz Synchronous Step-Up Converter Analog Intergrations Corporation
AIC3417 1.0A Synchronous Step-Up Converter Analog Intergrations Corporation
AIC3842 Current-Mode PWM Controller Analog Intergrations Corporation

Other Datasheets by Analog Integrations

Part Number Description
AIC3632 PFM Mode Step-Up DC/DC Converter
AIC3414 Synchronous Step-Up Converter
AIC3843 Current-Mode PWM Controller
AIC1084 5A Low Dropout Positive Adjustable Regulator
AIC1720 100mA Low Dropout Linear Regulator

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
AIC3643 Built-in OVP White LED Step-Up Converter FEATURES Built-In Open Circuit Protection Over Voltage Protection Efficiency Up to 83% at VIN=4.2V, 3LEDs, ILED=20mA 1.2MHz Fixed Switching Frequency Drives Up to 5LEDs in series 2.5V to 5.5V Input Voltage Low Supply Current: 150μA Matches LED Current Requires Tiny Inductor and Capacitors TSOT-23-6, and SOT-23-6 Packages DESCRIPTION AIC3643 is a current-mode pulse-widthmodulation (PWM), step-up DC/DC converter designed to drive white LEDs with a constant current to provide backlight in hand-held devices. Series connection of LEDs provides identical LED currents resulting in uniform brightness. This configuration eliminates the need of ballast resistors.
Published: |