a8516elbtr-t Allegro MicroSystems, Inc., a8516elbtr-t Datasheet
a8516elbtr-t
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a8516elbtr-t Summary of contents
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LED Backlight Driver for LCD Monitors and Televisions Features and Benefits ▪ Six integrated high current sinks ▪ Fixed frequency current mode control with integrated gate driver ▪ 300 kHz to 1 MHz adjustable Boost switching frequency ▪ Controlled startup ...
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... A8516 LED Backlight Driver for LCD Monitors and Televisions Selection Guide Part Number A8516ELBTR-T Contact factory for availability A8516ELPTR-T 4000 pieces per 13-in. reel Absolute Maximum Ratings Characteristic VIN Pin Input Voltage LED1-LED6 Pin Voltage OVP Pin Input Voltage SENSE1 and SENSE2 Pin Input ...
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... LED Select 6 Logic Control Logic/ UVLO 6 Open/Short LED Detect OVP OCP TSD LP Only PAD PGND AGND AGND DGND LGND R OVP P OVP Overvoltage Protection LED1 LED2 LED3 LED4 LED5 LED6 LGND Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 3 ...
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... LED6 4 LED5 LED4 6 PAD 18 LGND 7 LED3 LED2 9 15 LED1 10 COMP FSET 12 Package LP Function ground and to common star ground from ISET to AGND. ISET Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com to set the OVP 4 ...
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... REG7V / 2 – 4 REG7V / 2 – 3 REG7V 80 95 – 1.0 – 640 – 1.235 41 – Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 1 Max. Unit 6.8 V – V – μ 1.25 MHz – ns – ...
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... V – – – – – 18 PWM=V – 183 – – through I . Refer to characterization LED1 LED6 60 80 100 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 1 Typ. Max. Unit ±0 ±0 – μA 250 – kΩ 28.5 – ...
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... LEDs per string V ≈ OUT OUT 2 strings 14 LEDs per string V ≈ OUT OUT (V) BAT (kΩ) 120 130 140 150 Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com ≈ 20.2 W ≈ 13.4 W ≈ 15.8 W ≈ 10 ...
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... Hz, 50% duty cycle Symbol Parameter Units/Division PWM OUT C4 Total I 100 mA LED t time 2 ms Normal startup with battery voltage ramping up from (EN= PWM = High) Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 8 ...
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... PWM – OUT C4 I 100 mA LED t time 50 μs Ratio of LED Current versus PWM Frequency PWM duty cycle = 10% Compensated pulse width Uncompensated pulse width 0.1 1 PWM Frequency (kHz) Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 10 9 ...
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... Total I 100 mA LED t time 2 ms OVP setpoint too high for the application. Startup with one string open; voltage at LEDx pin exceeded Short-Detect threshold (25 V) before OVP could be tripped. IC shuts down. Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 10 ...
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... The value of f (MHz) is determined by FSET is in MHz and kΩ. The typical range of SW FSET is approximately 51 to 174 kΩ, which corresponds Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com (4) LEDx 11 ...
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... OVP such that its OVP setpoint is OVP V LEDx = 3.4 V (max.) and there are 15 LEDs in series, then the = 3.4 V × 1 52 OUT R = 0.095 / Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com (5) of 1.4 V (typ.), if = 200 kΩ. OVP (Ω): SC (6) , COMP 12 ...
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... Fault occurs when the LED pin voltage exceeds typical. SC Fault occurs when VIN drops below V No 6.5 V typical. This fault resets all latched faults. Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com , UVLO 13 ...
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... IC, to provide good thermal conduction. When using multi-layer PCB, make sure there are sufficient numbers of thermal vias underneath and around the IC's exposed pads. and R , and the compensation com- FSET ISET with smaller length traces. Place the SC Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 14 ...
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... AGND LGND LGND PGND V 36 LEDs per string OUT VREG7V C6 LED1 LED2 LED3 LED4 LED5 LED6 P . BAT V 18 LEDs per string OUT LED1 LED2 LED3 LED4 LED5 LED6 P Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 15 ...
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... A Terminal #1 mark area B Reference pad layout (reference IPC SOIC127P1030X265-24M) All pads a minimum of 0.20 mm from all adjacent pads; adjust as necessary to meet application process requirements and PCB layout tolerances 24 2. 0.65 PCB Layout Reference View B Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com 9.60 1.27 16 ...
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... The in for ma tion in clud ed herein is believed rate and reliable. How ev er, Allegro MicroSystems, Inc. assumes no re spon si bil i ty for its use; nor for any in fringe ment of patents or other rights of third parties which may result from its use. ...