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MAX16805 データシート(PDF) 1 Page - Maxim Integrated Products |
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MAX16805 データシート(HTML) 1 Page - Maxim Integrated Products |
1 / 19 page General Description The MAX16805/MAX16806 LED drivers eliminate the need for microcontrollers or switch-mode converters for automotive interior dome, map, and courtesy light applications. An EEPROM-programmable LED current- sense reference simplifies production by using one sense resistor to set the LED current for all LED bins. A dual-mode DIM pin and an on-board 200Hz ramp gen- erator allow for PWM dimming with an analog or PWM control signal. The analog control signal at dimming input DIM allows for the “theater dimming” effect to be implemented. Fast turn-on/-off times ensure a wide- range PWM operation, while waveshaping circuitry min- imizes EMI. EEPROM-programmable LED current foldback makes it possible to operate at a high input voltage, while saving the cost and space associated with having a large heatsink. The MAX16806 works with an external thermal sensor to maintain maximum LED junction temperature by folding back the LED current. The thermal foldback temperature knee and slope are EEPROM programmable. The MAX16806 SW pin sup- plies necessary wetting current to a momentary switch. Applications Automotive Interior: Map, Dome, and Courtesy Lighting Automotive Exterior: Rear Combination Light (RCL) Daytime Running Light (DRL) Adaptive Front Light Emergency Vehicle Warning Lights Navigation and Marine Indicators Features o EEPROM or I2C* Dynamically Programmable: LED Current Foldback for High Input Voltage LED Current Reference LED Current Thermal Foldback (MAX16806) o On-Board 200Hz Ramp Generator Eliminates the Need for µC PWM Signal o Flexible Analog or PWM Control for PWM or Theater Dimming o Wetting Current and Debounce for Momentary Switch (MAX16806) o 5.5V to 40V Input with Up to 39V Output Capability o 35mA to 350mA Adjustable LED Current o Waveshaping Minimizes EMI During Dimming o Output Short-Circuit and Overtemperature Protection o -40°C to +125°C Operating Temperature Range EEPROM-Programmable, High-Voltage, 350mA LED Drivers with LED Current Foldback ________________________________________________________________ Maxim Integrated Products 1 Ordering Information 19-0625; Rev 0; 8/06 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. * Purchase of I2C components from Maxim Integrated Products, Inc. or one of its sublicensed Associated Companies, conveys a license under the Philips I2C Patent Rights to use these com- ponents in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips. Pin Configurations appear at end of data sheet. + Denotes lead-free package. ** EP = Exposed pad. PART TEMP RANGE PIN PACKAGE PKG CODE MAX16805ATP+ -40°C to +125°C 20 TQFN-EP** T2055M-5 MAX16806ATP+ -40°C to +125°C 20 TQFN-EP** T2055M-5 MAX16805 IN OUT V5 LEDs ILED RSENSE 0.1 µF +5.5V TO +40V +5V REG CS+ 0.1 µF CS- DIM GND EN V5 ANALOG CONTROL PWM DIMMING SCL SDA SERIAL CLOCK SERIAL DATA ILED MAX16806 MAX6613† IN OUT V5 LEDs RSENSE 0.1 µF +5.5V TO +40V PWM CONTROL DIMMING +5V REG CS+ 0.1 µF CS- DIM PWM DIMMING GND EN TFP/SCL TFN/SDA VCC V5 GND OUT SW †MAX6613 THERMAL SENSOR IS OPTIONAL. Typical Operating Circuits |
同様の部品番号 - MAX16805 |
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同様の説明 - MAX16805 |
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