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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LM3533TME-40A Datenblatt(PDF) 11 Page - Texas Instruments |
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LM3533TME-40A Datenblatt(HTML) 11 Page - Texas Instruments |
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11 / 63 page  High Voltage Current Sinks 2X Charge Pump Reference and Thermal Shutdown Programmable 500-kHz/1-MHz Switching Frequency LVLED4 LVLED5 LVLED1 LVLED2 LVLED3 C- C+ CP CPOUT CIN Low Voltage Current Sinks COUT OVP SW HVLED1 HVLED2 IN INT SDA SCL I2C- Compatible Interface ALS VBATT Programmable Input 1. Internal Low Pass Filter 2. 128 Internal Gain Setting Resistors 4 x Programmable Pattern Generators Interrupt Output Enable Gain Control (Automatic, 1X, 2X) Programmable Overvoltage Protection (16V, 24V, 32V, 40V) LED String Open/Short Detection 1-A Current Limit PWM Internal Low Pass Filter ALS Processing 1. 8-bit ADC 2. Averaging 3. ALS Algorithms Indicator LED Control 1. 5-bit Full Scale Current Select 2. 8-bit brightness adjustment 3. Linear/Exponential Dimming 4. LED Current Ramping Backlight LED Control 1. 5-bit Full Scale Current Select 2. 8-bit Brightness Adjustment 3. Linear/Exponential Dimming 4. LED Current Ramping VBATT CIN Boost Converter LM3533 www.ti.com SNOSC68C – APRIL 2012 – REVISED SEPTEMBER 2015 7 Detailed Description 7.1 Overview The LM3533 provides the power for two high-voltage LED strings (up to 40 V at 30 mA each) and 5 low-voltage LEDs (up to 6 V at 30 mA each). The two high-voltage LED strings are powered from an integrated boost converter. The five low-voltage LEDs are powered from an integrated 2× charge pump. The device is programmable over an I2C-compatible interface. Additional features include a pulse width modulation (PWM) input for content adjustable brightness control, an ambient light sensor input (ALS) for ambient light current control, and 4 programmable pattern generators for RGB and indicator blinking functions on the low-voltage LEDs. 7.2 Functional Block Diagram Copyright © 2012–2015, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: LM3533 |
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