ISL97672IRZ Intersil, ISL97672IRZ Datasheet
ISL97672IRZ
Specifications of ISL97672IRZ
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ISL97672IRZ Summary of contents
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... IN AGND CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Intersil (and design trademark owned by Intersil Corporation or one of its subsidiaries. Copyright Intersil Americas Inc. 2010. All Rights Reserved All other trademarks mentioned are the property of their respective owners. Short Circuit, ...
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Block Diagram VIN = 4.5V~26V VIN EN REG REG Bias VDC fsw OSC & RAMP Comp /FLAG Fault Flag COMP AMP REF + - RSET GEN REF_OVP GND PWM PWM GENERATOR 2 ISL97672 (Optional Q1) 10uH/3A FAULT O/P Short Fault ...
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... PART (Notes MARKING ISL97672IRZ 7672 20 Ld 4x3 QFN L20.3x4 ISL97672IRZ-EVAL Evaluation Board NOTES: 1. Add “-T” or “-TK” suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die ...
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... Ld QFN Package (Notes Thermal Characterization (Typical QFN Package (Note Absolute Maximum Junction Temperature . . . . . . . . +150°C Recommended Max Operating Junction Temperature . +125°C Storage Temperature . . . . . . . . . . . . . . . -65°C to +150°C Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp and θ +25° CONDITION T = <+60°C ...
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Electrical Specifications All specifications below are tested at T otherwise noted. Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued) PARAMETER DESCRIPTION REGULATOR VDC LDO Output Voltage IVDC_STBY Standby Current IVDC Active Current VLDO VDC LDO Droop ...
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Electrical Specifications All specifications below are tested at T otherwise noted. Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued) PARAMETER DESCRIPTION VOVPlo Overvoltage Limit on OVP Pin OVPfault OVP Short Detection Fault Level FLAG_ON Fault Flag ...
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Typical Performance Curves 100 90 80 +25° 0°C +85° FIGURE 7. EFFICIENCY TEMPERATURE AT IN 20mA (100% LED DUTY CYCLE) 1.2 1.0 0.8 ...
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Typical Performance Curves FIGURE 13. IN-RUSH AND LED CURRENT AT V FOR 6P12S AT 20mA/CHANNEL FIGURE 15. LINE REGULATION WITH V FROM 26V TO 6V FOR 6P12S AT 20mA/CHANNEL FIGURE 17. LOAD REGULATION WITH I FROM 100 PWM ...
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Theory of Operation PWM Boost Converter The current mode PWM boost converter produces the minimal voltage needed to enable the LED stack with the highest forward voltage drop to run at the programmed current. The ISL97672 employs current mode control ...
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For example, if the maximum required LED current ( 20mA, rearranging Equation 1 yields LED(max) Equation 2: ⁄ R 401.8 0.02 20.1kΩ SET PWM CURRENT CONTROL The ISL97672 employs direct PWM dimming such that the output ...
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When this type of LED is open circuited, the effect the LED forward voltage has increased but no lighting. Any affected string will not be disabled, unless the failure results in ...
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VIN /FLAG FAULT DRIVER IMAX LOGIC ILIMIT FAULT FLAG DETECTION CASE FAILURE MODE MODE 1 CH0 Short Circuit Upper Over-Temperature Protection limit (OTP) not triggered and CH0 < CH0 Short Circuit Upper OTP triggered but VCH0 < 4V ...
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DETECTION CASE FAILURE MODE MODE 6 CH0 LED Open Upper OTP Circuit but has triggered but CH0 paralleled Zener < CH0 LED Open Upper OTP not Circuit but has triggered but CHx paralleled Zener > Channel-to- ...
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Components Selections According to the inductor Voltage-Second Balance principle, the change of inductor current during the switching regulator On time is equal to the change of inductor current during the switching regulator Off time. Since the voltage across an inductor ...
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Schottky Diode A high speed rectifier diode is necessary to prevent excessive voltage overshoot, especially in the boost configuration. Low forward voltage and reverse leakage current will minimize losses, making Schottky diodes the preferred choice. Although the Schottky diode turns ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries ...
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Package Outline Drawing L20.3x4 20 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 1, 3/10 3. PIN 1 INDEX AREA A TOP VIEW (2.65) (3.80) (1.65) (2.80) TYPICAL RECOMMENDED LAND PATTERN 17 ISL97672 A B 20X 4 4.00 0.15 ...