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부품번호 | SKY81452-13 기능 |
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기능 | High Efficiency White LED Driver | ||
제조업체 | Skyworks Solutions | ||
로고 | |||
전체 4 페이지수
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/
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/
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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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부품번호 | 상세설명 및 기능 | 제조사 |
SKY81452-13 | High Efficiency White LED Driver | Skyworks Solutions |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |