IRPLLED1 International Rectifier, IRPLLED1 Datasheet
IRPLLED1
Specifications of IRPLLED1
Related parts for IRPLLED1
IRPLLED1 Summary of contents
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Description The IRS254(0,1) are high voltage, high frequency buck control ICs for constant LED current regulation. They incorporate a continuous mode time-delayed hysteretic buck regulator to directly control the average load current, using an accurate on-chip bandgap voltage reference. The ...
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Alternate application circuit using a single MOSFET www.irf.com IRS254(0,1)(S)PbF Page 2 ...
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Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal resistance and power dissipation ...
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Electrical Characteristics +/- 0. BIAS Symbol Supply Characteristics V supply undervoltage positive going CC V CCUV+ threshold V supply undervoltage negative going CC V CCUV- threshold V V ...
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Electrical Characteristics +/- 0. BIAS Symbol Watchdog timer t Watchdog timer period pulse width WWD Functional Block Diagram IFB 3 UVLO ENN 4 BANDGAP 100 ...
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STATE DIAGRAM IRS254(0,1)(S)PbF Page 6 ...
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Functional Description Operating Mode The IRS254(0,1) operates as a time-delayed hysteritic buck controller. During normal operating conditions the output current is regulated via the IFB pin voltage (nominal value of 500 mV). feedback is compared to an internal high precision ...
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Watchdog Timer During an open circuit condition, without the watchdog timer, the HO output would remain high at all times and the charge stored in the bootstrap capacitor C would gradually discharge the BOOT floating power supply for the high-side ...
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Enable Duty Cycle Relationship to Light Output 100 Percentage of Light Output Fig.5 Light Output vs Enable Pin Duty Cycle Fig.6 ...
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IC does not enter UVLO unless the supply voltage falls below V CCUV- Inductance Selection To maintain tight hysteretic current regulation the inductor and output capacitor C the LEDs) need to be large enough to maintain the supply ...
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Vin (V) Fig 350 mA 16 470 μH out out 400 350 300 250 200 150 100 Capacitance ...
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SOIC Tape & Reel F www.irf.com LOADED TAPE FEED DIRECTION B NOTE : CONTROLLING E DIM ENSION CARRIER TAPE DIMENSION FOR 8SOICN Metric Code Min Max A 7.90 8.10 0.311 B 3.90 4.10 0.153 C 11.70 ...
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ORDER INFORMATION 8-Lead PDIP IRS2540PbF 8-Lead PDIP IRS2541PbF 8-Lead SOIC IRS22540SPbF 8-Lead SOIC IRS22541SPbF Tape & Reel 8-Lead SOIC IRS2540STRPbF Tape & Reel 8-Lead SOIC IRS2541STRPbF This product has been designed and qualified for the industrial level. Qualification standards ...
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