SP7616ER-L/TR
SP7616ER-L/TR Datasheet
SP7616
| Part | Datasheet |
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SP7616ER-L/TR |
SP7616ER-L/TR (pdf) |
| Related Parts | Information |
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SP7616ER-L |
SP7616ER-L |
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| May 2009 SP7616 High Accuracy 4-Channel Low Side LED Driver for CCFL Replacement The SP7616 is a 30V 4-Channel linear low side LED driver. It is capable of powering up to four LED strings of nine LEDs 60mA per string for a total of 36 LEDs with typical current matching between channels. The desired LED current can be adjusted with an external resistor, and the precision string-tostring current matching ensures consistent color temperature across the whole display. The device also features very low dropout voltage to maximize system efficiency and avoid difficult thermal design constraints. Dimming can be achieved by feeding a PWM signal to the PWM pin, or use an analog signal to control the ISET current, this allows brightness control without unwanted color shifts. Fast LED current turn-on/off time allows up to 5 kHz PWM dimming frequencies with as low as 10% duty cycle, completely eliminating flicker. The built-in thermal protection prevents damage to the device under fault conditions. APPLICATIONS • CCFL replacement in TFT displays • Panel backlighting • Casino gaming light systems • Advertising backlighting FEATURES • Wide 4.5V to 30V operating range • 60mA LED current per channel • channel to channel current matching • Analog Dimming control • PWM operation up to 5kHz with 10% Duty Cycle • Low dropout 150mV 20mA • Built-in Over Temperature Protection • Small 2X3mm DFN package − Lead Free, RoHS Compliant TYPICAL APPLICATION DIAGRAM Fig. 1 SP7616 Application Diagram Exar Corporation 48720 Kato Road, Fremont CA 94538, USA Tel. +1 510 668-7000 Fax. +1 510 668-7001 SP7616 High Accuracy 4-Channel Low Side LED Driver for CCFL Replacement ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. VIN -0.3V to 32V LED1, LED2, LED3, LED4 -0.3V to 32V ISET, PWM -0.3V to 6.0V Storage Temperature -65°C to 150°C Power Dissipation Internally Limited Lead Temperature Soldering, 10 sec 300°C OPERATING RATINGS Input Voltage Range VIN................................4.5V to 30V Junction Temperature Range ....................-40°C to 100°C Thermal Resistance 59°C/W ESD Rating HBM - Human Body Model 2kV ESD Rating MM - Machine Model ........................... 500V Operating Junction Temperature -40°C to +125°C Power Limited ELECTRICAL SPECIFICATIONS Specifications with standard type are for an Operating Junction Temperature of TJ = 25°C only limits applying over the full Operating Junction Temperature range are denoted by a Minimum and Maximum limits are guaranteed through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise indicated, VIN = 4.5V to 30V, CIN = 1uF, TJ = to 125°C. Parameter Operating Input Voltage Range Shutdown Supply Current Quiescent Supply Current Quiescent Supply Current Quiescent Supply Current LED Current Matching LED Current Line Regulation Line Regulation Maximum LED Current per channel LED Leakage Current Dropout Voltage Output Current Multiplication Ratio K = ILED•RSET ISET Voltage Thermal Shutdown Die Temperature Thermal Shutdown Hysteresis PWM Pin Logic LOW PWM Pin Logic HIGH PWM pin Hysteresis ISET Shutdown Threshold ISET Shutdown Threshold Hysteresis Typical PWM Maximum Dimming Frequency Typical PWM Dimming Duty Cycle Range Min. -3 1032 1000 Typ. 30 350 1075 1 150 15 Max. 30 60 500 3 1 2 1118 1130 Units V uA mA % %/V %/V ORDERING INFORMATION Part Number SP7616ER-L SP7616ER-L/TR SP7616EB Temperature Range Marking SP7616 Evaluation Board Package 8pin 2x3DFN 8pin 2x3DFN Packing Quantity Bulk 3K/Tape & Reel Note 1 Lead Free and/or Halogen Free Lead Free and/or Halogen Free “YY” = Year “WW” = Work Week “X” = Lot Number Note 2 2009 Exar Corporation 4/11 SP7616 High Accuracy 4-Channel Low Side LED Driver for CCFL Replacement TYPICAL PERFORMANCE CHARACTERISTICS All data taken at VIN = 8V, TJ = TA = 25°C, unless otherwise specified. ILED PWM Duty Cycle % ILED 20mA/DIV ILED 20mA/DIV Typical Turn on Characteristics PWM = 100Hz PWM = 1KHz PWM = 5KHz 60 PWM Duty Cycle % PWM Duty Cycle Linearity PWM Signal VLED Cathode Voltage ILED 20mA/DIV Typical Turn Maximum Input Voltage PWM Signal VLED Cathode Voltage ILED 20mA/DIV PWM Response 1kHz 10% Duty Cycle PWM Signal VLED Cathode Voltage ILED 20mA/DIV PWM Response 1kHz 90% Duty Cycle 2009 Exar Corporation 5/11 PWM Response 1kHz 50% Duty Cycle SP7616 High Accuracy 4-Channel Low Side LED Driver for CCFL Replacement PWM Signal |
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