ISL1903EVAL2Z INTERSIL [Intersil Corporation], ISL1903EVAL2Z Datasheet
ISL1903EVAL2Z
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ISL1903EVAL2Z Summary of contents
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Dimmable Buck LED Driver - AC Mains or DC Input LED Driver ISL1903 The ISL1903 is a high-performance, critical conduction mode (CrCM), single-ended buck LED driver controller. It may be used with DC input converters, but also supports single-stage conversion ...
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Functional Block Diagram - ISL1903 VREF BIAS AND VDD REFERENCE GENERATOR UVLO + - OTP BG SHUTDOWN 150°C TO 170°C GND DUTY CYCLE TO VOLTAGE CONVERTER LOW PASS FILTER REFERENCE OUT CLK MASTER OSCILLATOR REF PEAK DETECTOR AC-PRESENT AC AC ...
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Typical Application - Dimmable Buck LED Driver DIMMER EMI FILTER AC MAINS 1 OUT 16 VDD 2 OFFREF PWMOUT VREF DHC 4 GND 13 IOUT ISL1903 OVP 7 FB RAMP ...
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Typical Application - DC Input Dimmable Buck LED Driver 9V TO 26V 1 OUT 16 VDD 2 OFFREF PWMOUT 15 3 VREF DHC 14 4 GND 13 IOUT ISL1903 OVP 7 FB RAMP ...
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Typical Application - Isolated Dimmable Buck LED Driver DIMMER EMI FILTER AC MAINS 1 OUT 16 VDD 2 OFFREF PWMOUT VREF DHC 4 GND 13 IOUT ISL1903 OVP 7 FB ...
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Pin Configuration Pin Descriptions PIN # SYMBOL 1 VDD VDD is the power connection for the IC. To optimize noise immunity, bypass VDD to GND with a ceramic capacitor as close to the VDD and GND pins as possible. 2 ...
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... MARKING ISL1903FAZ 1903 FAZ ISL1903EVAL2Z Evaluation Board 1. Add “-T*” suffix for tape and reel. Please refer to 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020 ...
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Absolute Maximum Ratings (Note 4) Supply Voltage, VDD GND - 0.3V to +28.0V OUT, ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram - ISL1903” on page 2 and “Typical Application schematics” beginning on page 3. V +125°C, Typical values are +25°C; Boldface limits apply over the ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram - ISL1903” on page 2 and “Typical Application schematics” beginning on page 3. V +125°C, Typical values are +25°C; Boldface limits apply over the ...
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Electrical Specifications Recommended operating conditions unless otherwise noted. Refer to “Functional Block Diagram - ISL1903” on page 2 and “Typical Application schematics” beginning on page 3. V +125°C, Typical values are +25°C; Boldface limits apply over the ...
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Test Waveforms and Circuits OC THRESHOLD OC LEADING EDGE BLANKING OC PROPAGATION DELAY OC + LEB TO OUT DELAY OUT FIGURE 4. OC +LEB TO OUT DELAY Typical Performance Curves 1.001 1.000 0.999 0.998 0.997 0.996 -40 -25 -10 5 ...
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Functional Description Features The ISL1903 LED driver is an excellent choice for low cost AC mains powered single conversion LED lighting applications. It provides active power factor correction (PFC) to achieve high power factor using critical conduction mode operation, and ...
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TABLE 1. OSCILLATOR DEFINITIONS V = Minimum RMS input voltage mINrms V = Maximum RMS input voltage maxINrms f = Typical frequency when V min(avg) minimum V IN(rms Maximum typical duty cycle desired max D = Minimum typical ...
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AC Detection and Reference Generation The ISL1903 creates 0.5V reference for the LED current control loop by measuring the conduction angle of the AC input voltage. The reference changes only with conduction angle and is virtually unaffected ...
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Control Loop The control loop configuration is user adjustable with the selection of the external compensation components. For applications requiring power factor correction (PFC), a very low bandwidth integrator is used, typically 20Hz or less. In other applications, the control ...
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If the hysteresis was implemented as a fixed voltage instead, the signal could be filtered with a small capacitor ...
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Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest revision. DATE REVISION August 27, 2012 FN8285.1 Page 14: ...
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Package Outline Drawing M16.15A 16 LEAD SHRINK SMALL OUTLINE PLASTIC PACKAGE (QSOP/SSOP) 0.150” WIDE BODY Rev 3, 8/12 16 INDEX AREA 1 TOP VIEW 3 -A- 4.98 4.80 0.635 BSC 0.31 7 0.20 0.17(0.007 SIDE VIEW 1 ...