BD9488F – Boost 1channel white LED driver

BD9488F Datasheet PDF learn more.

Part number : BD9488F

Functions : This is a kind of semiconductor, Boost 1channel white LED driver.

Pin arrangement :

Package information :

Manufacturer : Rohm

Image :

BD9488F Datasheet PDF

The texts in the PDF file :

Datasheet Boost 1channel white LED driver For large LCDs BD9488F ●General

Description

BD9488F is a high efficiency driver for white LEDs and designed for large LCDs. This IC is built-in a boost DCDC converters that employ an array of LEDs as the light source. BD9488F has some protect function against fault conditions, such as the over-voltage protection (OVP), the over current limit protection of DCDC (OCP), LED over current protection (LEDOCP), the open detection of LED string. Therefore BD9488F is available for the fail-safe design over a wide range output voltage. ●

Features

 Current mode DCDC converter  Vout discharge circuit as shutdown  LED protection circuit (OPEN protection, LED OCP protection)  LED protect detection as small PWM dimming signal  Over-voltage protection (OVP) for the output voltage.  Adjustable soft start time constant  The wide range of analog dimming 0.2V-3.5V  The built-in transformation circuit from pulse to DC  2 PWM dimming signal  The UVLO detection for the input voltage of the power stage  FAIL logic output ●Applications  TV, PC display and other LCD backlight system. ●Key Specifications  Input voltage range: 9.0V to 18.0V  DCDC oscillation frequency: 150kHz (RT=100kΩ)  Active current consumption: 1.2mA(Typ.)  Operating temperature range: -40℃ to +85℃ ●Package(s) SOP18 W(Typ.) x D(Typ.) x H(Max.) 11.20mm x 7.80mm x 2.01mm Pin pitch 1.27mm Figure 1. SOP18 ●Typical Application Circuit(s) VCC VIN VCC TC54 STB UVLO OVP GATE RT Css SS FAILB PWM1 PWM2 ADIM_P FB ADIM GND DIMOUT CS ISENSE Figure 2. Typical application circuit ○Product structure:Silicon monolithic integrated circuit . www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・14・001 ○This product is not designed protection against radioactive rays 1/38 TSZ02201-0F1F0C100040-1-2 27.May 2014 Rev.003 BD9488F ●Absolute Maximum Ratings (Ta=25℃) Parameter Input voltage STB pin volta [ … ]

BD9488F PDF File



This entry was posted in Uncategorized. Bookmark the permalink.