전원 관리 LED 드라이버 백라이트 LED 드라이버

LM3528

활성

고효율, 다중 디스플레이 LED 드라이버(128개 지수 조광 단계)

제품 상세 정보

Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 22 Type Inductive Switching frequency (max) (kHz) 1250 Duty cycle (max) (%) 90 LED current per channel (mA) 20 Peak efficiency (%) 88 Topology Boost Features OVP Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 22 Type Inductive Switching frequency (max) (kHz) 1250 Duty cycle (max) (%) 90 LED current per channel (mA) 20 Peak efficiency (%) 88 Topology Boost Features OVP Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YFQ) 12 2.52000000000000018 mm² 1.8 x 1.4000000000000001
  • 128 Exponential Dimming Steps
  • Programmable Auto-Dimming Function
  • Up to 90% Efficient
  • Low Profile 12 Bump DSBGA Package (1.2mm x 1.6mm x 0.6mm)
  • Integrated OLED Display Power Supply and LED Driver
  • Programmable Pattern Generator Output for LED Indicator Function
  • Drives up to 12 LED’s at 20mA
  • Drives up to 5 LED’s at 20mA and delivers 18V at 40mA
  • 1% Accurate Current Matching Between Strings
  • Internal Soft-Start Limits Inrush Current
  • True Shutdown Isolation for LED’s
  • Wide 2.5V to 5.5V Input Voltage Range
  • 22V Over-Voltage Protection
  • 1.25MHz Fixed Frequency Operation
  • Dedicated Programmable General Purpose I/O
  • Active Low Hardware Reset

All trademarks are the property of their respective owners.

  • 128 Exponential Dimming Steps
  • Programmable Auto-Dimming Function
  • Up to 90% Efficient
  • Low Profile 12 Bump DSBGA Package (1.2mm x 1.6mm x 0.6mm)
  • Integrated OLED Display Power Supply and LED Driver
  • Programmable Pattern Generator Output for LED Indicator Function
  • Drives up to 12 LED’s at 20mA
  • Drives up to 5 LED’s at 20mA and delivers 18V at 40mA
  • 1% Accurate Current Matching Between Strings
  • Internal Soft-Start Limits Inrush Current
  • True Shutdown Isolation for LED’s
  • Wide 2.5V to 5.5V Input Voltage Range
  • 22V Over-Voltage Protection
  • 1.25MHz Fixed Frequency Operation
  • Dedicated Programmable General Purpose I/O
  • Active Low Hardware Reset

All trademarks are the property of their respective owners.

The LM3528 current mode boost converter offers two separate outputs. The first output (MAIN) is a constant current sink for driving series white LED’s. The second output (SUB/FB) is configurable as a constant current sink for series white LED bias, or as a feedback pin to set a constant output voltage for powering OLED panels.

As a dual output white LED bias supply, the LM3528 adaptively regulates the supply voltage of the LED strings to maximize efficiency and insure the current sinks remain in regulation. The maximum current per output is set via a single external low power resistor. An I2C compatible interface allows for independent adjustment of the LED current in either output from 0 to max current in 128 exponential steps. When configured as a white LED + OLED bias supply the LM3528 can independently and simultaneously drive a string of up to 6 white LED’s and deliver a constant output voltage of up to 21V for OLED panels.

Output over-voltage protection shuts down the device if VOUT rises above 22V allowing for the use of small sized low voltage output capacitors. Other features include a dedicated general purpose I/O (GPIO) and a multi-function pin (HWEN/PGEN/GPIO) which can be configured as a 32 bit pattern generator, a hardware enable input, or as a GPIO. When configured as a pattern generator, an arbitrary pattern is programmed via the I2C compatible interface and output at HWEN/PGEN/GPIO for indicator LED flashing or for external logic control. The LM3528 is offered in a tiny 12-bump DSBGA package and operates over the -40°C to +85°C temperature range.

The LM3528 current mode boost converter offers two separate outputs. The first output (MAIN) is a constant current sink for driving series white LED’s. The second output (SUB/FB) is configurable as a constant current sink for series white LED bias, or as a feedback pin to set a constant output voltage for powering OLED panels.

As a dual output white LED bias supply, the LM3528 adaptively regulates the supply voltage of the LED strings to maximize efficiency and insure the current sinks remain in regulation. The maximum current per output is set via a single external low power resistor. An I2C compatible interface allows for independent adjustment of the LED current in either output from 0 to max current in 128 exponential steps. When configured as a white LED + OLED bias supply the LM3528 can independently and simultaneously drive a string of up to 6 white LED’s and deliver a constant output voltage of up to 21V for OLED panels.

Output over-voltage protection shuts down the device if VOUT rises above 22V allowing for the use of small sized low voltage output capacitors. Other features include a dedicated general purpose I/O (GPIO) and a multi-function pin (HWEN/PGEN/GPIO) which can be configured as a 32 bit pattern generator, a hardware enable input, or as a GPIO. When configured as a pattern generator, an arbitrary pattern is programmed via the I2C compatible interface and output at HWEN/PGEN/GPIO for indicator LED flashing or for external logic control. The LM3528 is offered in a tiny 12-bump DSBGA package and operates over the -40°C to +85°C temperature range.

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기술 자료

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5개 모두 보기
유형 직함 날짜
* Data sheet LM3528 HE, Multi-dsplay LED Drvr w/128 Exp Dim Steps & OLED PS datasheet (Rev. B) 2013/05/03
White paper Common LED Functions and LED Driver Design Considerations 2020/09/21
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
Application note Analog PWM Dimming in White-LED Drivers 2016/12/21
EVM User's guide AN-1823 LM3528 Evaluation Board (Rev. A) 2013/04/30

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 모듈(EVM)용 GUI

SNVC047 LM3528 Graphical User Interface

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
백라이트 LED 드라이버
LM3528 고효율, 다중 디스플레이 LED 드라이버(128개 지수 조광 단계)
시뮬레이션 툴

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TI용 PSpice®는 아날로그 회로의 기능을 평가하는 데 사용되는 설계 및 시뮬레이션 환경입니다. 완전한 기능을 갖춘 이 설계 및 시뮬레이션 제품군은 Cadence®의 아날로그 분석 엔진을 사용합니다. 무료로 제공되는 TI용 PSpice에는 아날로그 및 전력 포트폴리오뿐 아니라 아날로그 행동 모델에 이르기까지 업계에서 가장 방대한 모델 라이브러리 중 하나가 포함되어 있습니다.

TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
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DSBGA (YFQ) 12 Ultra Librarian

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

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