lm27965sqx-m National Semiconductor Corporation, lm27965sqx-m Datasheet
lm27965sqx-m
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lm27965sqx-m Summary of contents
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... LED forward voltage, so that effi- ciency is maximized over the input voltage range. The LM27965 is available in National's small 24-pin Leadless Leadframe Package (LLP-24). Typical Application Circuit © 2007 National Semiconductor Corporation Features ■ 91% Peak LED Drive Efficiency ■ No Inductor Required ■ ...
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... NC Ordering Information Order Information Compatible Chip Address LM27965SQ LM27965SQX LM27965SQ-M LM27965SQX-M www.national.com 24 Pin Quad LLP Package NS Package Number SQA24A Pin Descriptions Input voltage. Input range: 2.7V to 5.5V. Charge Pump Output Voltage Flying Capacitor Connections LED Drivers - GroupA LED Drivers - GroupB LED Driver - Indicator LED ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V pin voltage IN SCL, SDIO, VIO, RESET pin voltages I Pin Voltages Dxx Continuous Power Dissipation (Note 3) ...
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Symbol Parameter V Reset Voltage Thresholds RESET Compatible Interface Voltage Specifications (SCL, SDIO, VIO) V Serial Bus Voltage Level IO V Input Logic Low "0" Input Logic High "1" Output Logic Low "0" ...
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AVG and (AVG-MIN)/AVG. The largest number of the two (worst case) is considered the matching figure for the bank. The matching figure for a given part is considered to be the highest matching figure of the two banks. The typical ...
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Typical Performance Characteristics 3.6V; R LEDxA LEDxB LED1C SET LED Drive Efficiency vs Input Voltage BankA Current Regulation vs Input Voltage BankC Current Regulation vs Input Voltage www.national.com Unless otherwise specified 16.9kΩ; ...
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BankB Current Matching vs Input Voltage BankB Diode Current vs Brightness Register Code BankA Diode Current vs Brightness Register Code 20155032 20155027 7 20155026 www.national.com ...
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Circuit Description OVERVIEW The LM27965 is a white LED driver system based upon an adaptive 3/2× - 1× CMOS charge pump capable of supplying up to 180mA of total output current. With three separately controlled banks of constant current sinks, ...
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The third byte contains data to write to the selected register. ack = acknowledge (SDIO pulled down by either master or slave chip address, 36h for LM27965 or ...
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Brightness Level Control Table (BankA and BankB) Brightness Code (hex ...
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The statement above is a simple example of the LED drive capabilities of the LM27965. The statement contains the key application parameters that are required to validate an LED- drive design using the LM27965: LED current (I of active LEDs ...
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V is the nominal LED forward voltage the number of LED LEDs and I is the programmed LED current. LED DISS IN LEDA P = (GAIN × V × I DISS ...
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Physical Dimensions inches (millimeters) unless otherwise noted SQA24: 24 Lead LLP X1 = 4.0mm X2 = 4.0mm X3 = 0.8mm 13 www.national.com ...
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