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SKY81452-13 데이터시트 PDF




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부품번호 SKY81452-13 기능
기능 High Efficiency White LED Driver
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SKY81452-13 데이터시트, 핀배열, 회로
PRODUCT SUMMARY
SKY81452-13: Six-Channel, High Efficiency White LED Driver
with Touch Screen Driver Supply
Applications
Tablet PCs
Notebook computers
Monitors
Portable TV/DVD players
Features
Input voltage range: 2.5 V to 5.5 V
Integrated 28 V boost converter
Minimum off time: 50 ns
Adjustable switching frequency
Frequency range: 600 kHz to 2 MHz
Up to 93% efficiency
Boost current limit selection
Six current sinks
Up to 28 V, 60 mA per channel
Accuracy matching: ±1.5% @ 25 °C, 30 mA
Fade in/out feature for brightness control
I2C interface control
Individual channel enable/disable, fault trigger point, and status
programming
Eight-bit/256 programmable analog dimming
PWM output frequency, LED current control
Direct PWM dimming (100 Hz to 50 kHz)
Fault protection and independent channel shutdown for:
Open or shorted LED(s)
Boost over-voltage and current protection
Over temperature condition
Ultra small, low profile WLCSP (25-bump,
2.44 mm x 2.44 mm) package (MSL1, 260 °C per
JEDEC J-STD-020)
Description
The SKY81452-13 is a highly integrated, high efficiency LED
backlight solution for tablets, notebook computers, monitors, and
other portable devices.
An integrated boost converter provides a high voltage output for
driving up to 28 V. Six precision current sinks are programmable
up to 60 mA per string. The integrated boost regulator switching
frequency is adjustable from 600 kHz to 2 MHz for system
integration flexibility, which optimizes efficiency and minimizes
external passive component requirements.
The SKY81452-13 supports Direct Pulse Width Modulation
(DPWM) dimming and analog dimming modes. In the DPWM
dimming mode, the output waveform follows the Pulse Width
Modulation Input (PWMI) signal and the current level is set by I2C
control and an external RSET resistor. In the analog dimming
mode, the PWMI signal duty and the I2C brightness control signal
are multiplied to control the output current level.
When the PWM pin is not used, it should be pulled high.
For system protection, the SKY81452-13 senses open or short
LEDhttp://www.DataSheet4U.net/ conditions and over temperature events. High voltage current
sink design prevents damage resulting from shorted LEDs. System
faults are reported through the I2C interface.
The SKY81452-13 is available in a space saving
2.44 mm x 2.44 mm, 25-bump Wafer-Level Chip Scale Package
(WLCSP). Typical application circuits are shown in Figure 1 (single
cell input) and in Figure 2 (dual cell input).
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
202714D • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • March 29, 2013
1
datasheet pdf - http://www.DataSheet4U.net/




SKY81452-13 pdf, 반도체, 판매, 대치품
PRODUCT SUMMARY SKY81452-13 SIX-CHANNEL BOOST LED DRIVER WITH TOUCH SCREEN DRIVER SUPPLY
Ordering Information
Model Name
SKY81452-13 LED Driver
Manufacturing Part Number
SKY81452-13-001
Evaluation Board Part Number
SKY81452-13-001-EVB
http://www.DataSheet4U.net/
Copyright © 2013 Skyworks Solutions, Inc. All Rights Reserved.
Information in this document is provided in connection with Skyworks Solutions, Inc. (“Skyworks”) products or services. These materials, including the information contained herein, are provided by
Skyworks as a service to its customers and may be used for informational purposes only by the customer. Skyworks assumes no responsibility for errors or omissions in these materials or the
information contained herein. Skyworks may change its documentation, products, services, specifications or product descriptions at any time, without notice. Skyworks makes no commitment to
update the materials or information and shall have no responsibility whatsoever for conflicts, incompatibilities, or other difficulties arising from any future changes.
No license, whether express, implied, by estoppel or otherwise, is granted to any intellectual property rights by this document. Skyworks assumes no liability for any materials, products or
information provided hereunder, including the sale, distribution, reproduction or use of Skyworks products, information or materials, except as may be provided in Skyworks Terms and Conditions of
Sale.
THE MATERIALS, PRODUCTS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, INCLUDING FITNESS FOR A
PARTICULAR PURPOSE OR USE, MERCHANTABILITY, PERFORMANCE, QUALITY OR NON-INFRINGEMENT OF ANY INTELLECTUAL PROPERTY RIGHT; ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY
DISCLAIMED. SKYWORKS DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. SKYWORKS
SHALL NOT BE LIABLE FOR ANY DAMAGES, INCLUDING BUT NOT LIMITED TO ANY SPECIAL, INDIRECT, INCIDENTAL, STATUTORY, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION,
LOST REVENUES OR LOST PROFITS THAT MAY RESULT FROM THE USE OF THE MATERIALS OR INFORMATION, WHETHER OR NOT THE RECIPIENT OF MATERIALS HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
Skyworks products are not intended for use in medical, lifesaving or life-sustaining applications, or other equipment in which the failure of the Skyworks products could lead to personal injury,
death, physical or environmental damage. Skyworks customers using or selling Skyworks products for use in such applications do so at their own risk and agree to fully indemnify Skyworks for any
damages resulting from such improper use or sale.
Customers are responsible for their products and applications using Skyworks products, which may deviate from published specifications as a result of design defects, errors, or operation of
products outside of published parameters or design specifications. Customers should include design and operating safeguards to minimize these and other risks. Skyworks assumes no liability for
applications assistance, customer product design, or damage to any equipment resulting from the use of Skyworks products outside of stated published specifications or parameters.
Skyworks, the Skyworks symbol, and “Breakthrough Simplicity” are trademarks or registered trademarks of Skyworks Solutions, Inc., in the United States and other countries. Third-party brands
and names are for identification purposes only, and are the property of their respective owners. Additional information, including relevant terms and conditions, posted at www.skyworksinc.com,
are incorporated by reference.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
4 March 29, 2013 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • 202714D
datasheet pdf - http://www.DataSheet4U.net/

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부품번호상세설명 및 기능제조사
SKY81452-13

High Efficiency White LED Driver

Skyworks Solutions
Skyworks Solutions

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