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부품번호 | AAT2430C 기능 |
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기능 | 16 Channel White LED Driver Solution | ||
제조업체 | Skyworks | ||
로고 | |||
전체 3 페이지수
PRODUCT SUMMARY
AAT2430C
16 Channel White LED Driver Solution with LED Current and Timing Control
General Description
The AAT2430C is a highly integrated, high efficiency white
LED backlight solution for large size LCD panels used in
LCD TVs. By controlling external power MOSFETs (such as
the Skyworks' AAT2491 high-voltage TrenchDMOS
array), the AAT2430C facilitates 16 current sink channels
to provide precision constant-current drive for strings of
white LEDs, where the number of series-connected LEDs
per string is only limited by the system LED voltage sup-
ply. Current in each backlight string and string-to-string
matching is controlled using I-Precise™ sensing and con-
trol circuitry, a novel on-chip method to accurately control
drain current in external discrete power MOSFETs inde-
pendent of their construction and without the need for
precision sense resistors.
A 15MHz SPI compatible interface allows fast, indepen-
dent digital control of each current sink. Full scale LED
current is programmed using an external resistor. DOT
correction may be applied globally to all sink channels
with 8-bit resolution. Both phase delay and grayscale
clock (GS Clock) PWM on-time are user programmable
with 12-bit resolution for each current sink channel.
Timing and synchronization are determined by exter-
nally applied VSYNC and GS Clock signals.
The AAT2430C provides latched fault handling and fault
reporting through the SPI interface and fault flag output
pin. The fault detection system reports open or short cir-
cuit LED strings and over-temperature events. The short
circuit LED detection threshold is user programmable.
The LED string supply voltage may be regulated by using
the voltage or current mode current sense feedback sig-
nal to the LED voltage regulator. This analog signal rep-
resents the highest VF string of LEDs. Thermal protection
circuitry shuts down the device in the event of an over-
temperature condition.
The AAT2430C is available in the Pb-free, thermally
enhanced 64-pin 9mm x 9mm QFN and 64-pin 14mm x
14mm LQFP packages.
Features
• VIN Range: 10.8V – 28V
• 16 Programmable LED Current Sinks
▪ ±1.5% Accuracy @ RSET = 3.01kΩ
▪ ±1.5% Matching @ RSET = 3.01kΩ
• SPI Interface
▪ Digitally Programmable Individual Channels
▪ Up to 15MHz Clock Speed
▪ Read/Write Registers
• High Resolution Digital Control for Individual
Channels
▪ 12-bit Resolution Grayscale PWM Brightness
▪ 12-bit Resolution Channel Phase Delay
▪ 8-Bit Resolution Global Current Setting
(Dot Correction)
• VSYNC PWM and Delay Synchronization
• Device Addressing
▪ 4 Possible Address Settings
▪ Up to 64 Current Sinks
• Integrated Fault Protection
▪ Open Circuit LED(s)
▪ Programmable Short LED Threshold
▪ Over-Temperature Protection
• 9mm x 9mm 64-pin QFN Package with 0.5mm pitch
or 14mm x 14mm 64-pin Low Profile QFP Package
with 0.8mm pitch
Applications
• Large Size LCD TVs, Panels
• White LED Backlight, Dynamic Edge LCD TV Backlight
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
201969A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • May 18, 2012
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구 성 | 총 3 페이지수 | ||
다운로드 | [ AAT2430C.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
AAT2430B | 16 Channel White LED Driver Solution | Skyworks |
AAT2430C | 16 Channel White LED Driver Solution | Skyworks |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |