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LM3631YFFR Fiches technique(PDF) 1 Page - Texas Instruments |
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LM3631YFFR Fiches technique(HTML) 1 Page - Texas Instruments |
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1 / 57 page  COUT VOUT LSW VIN CIN LM3631 VIN CIN CBST CFLY CNEG CVPOS COREF SDA SCL nRST BST_SW BST_OUT SW LED1 LED2 C2 CP_VNEG LDO_OREF LDO_VPOS C1 PGND AGND VNEG (-5.4V) VPOS (+5.4V) VOREF (+4.0V to +6.0V) Up to 8 LEDs / string PWM FLAG OTP_SEL LDO_CONT GND_SW GND_BST_SW LBST + - LCD_EN VCONT (+1.8V) CCONT D1 Load (mA) 0 5 10 15 20 25 30 35 40 45 50 50 55 60 65 70 75 80 85 90 95 D007 VIN 2.7V VIN 3.7V VIN 5.0V Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3631 SNVS834 – AUGUST 2014 LM3631 Complete LCD Backlight and Bias Power 1 Features 2 Applications Mobile Device LCD Backlighting and Bias 1 • Drives up to Two Strings with Maximum of Eight LEDs in Series 3 Description – Integrated Backlight Boost with 29-V Maximum The LM3631 is a complete LCD backlight and bias Output Voltage power solution for mobile devices. This one-chip – Two Low-Side Constant-Current LED Drivers solution has an integrated high-efficiency backlight with 25-mA Maximum Output Current LED driver and positive/negative bias supplies for • Backlight Efficiency Up to 90% LCD drivers addressing the power requirements of high-definition LCDs. Integrated solution allows small • 11-Bit Linear or Exponential Dimming with up to solution size while still maintaining high performance. 17-Bit Output Resolution Capable of driving up to 16 LEDs, the LM3631 is • External PWM Input for CABC Backlight ideal for small- to medium-size displays. Two Operation additional programmable LDO regulator outputs can • LCD Bias Efficiency > 85% be used to power display controller, LCD gamma • Programmable Positive LCD bias, 4-V to 6-V, reference, or any additional peripherals. 100-mA Maximum Output Current A high level of integration and programmability allows • Programmable Negative LCD bias, –4-V to –6-V, the LM3631 to address a variety of applications 80-mA Maximum Output Current without the need for hardware changes. Voltage levels, backlight configuration, and power sequences • Two Positive Programmable LDO Reference are all configurable through I2C interface. Outputs – 4-V to 6-V, 50-mA Maximum Output Current Device Information(1) – 1.8-V to 3.3-V, 80-mA Maximum Output PART NUMBER PACKAGE BODY SIZE (MAX) Current LM3631 DSBGA (24) 2.585 mm x 1.885 mm • 2.7-V to 5-V Input Voltage Range (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Schematic Backlight Efficiency, 2P6S 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
Numéro de pièce similaire - LM3631YFFR |
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Description similaire - LM3631YFFR |
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