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MAX1554 Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX1554 Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 11 page High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs _______________________________________________________________________________________ 7 MAX1553 MAX1554 ENABLE CONTROL CIRCUITRY CONTROL LOGIC EN VCC LX DRIVER GND OV COMPARATOR REF OV UVLO 1.25V BANDGAP REFERENCE BIAS GENERATOR CURRENT LIMIT VLIM REF 67k Ω BRT FB SS 1.72V 128k Ω 206k Ω MINIMUM tOFF ONE-SHOT MINIMUM tON ONE-SHOT ERROR COMPARATOR LX SS R1 10 Ω R3 10k Ω R2 200k Ω VCC FB ON OFF BRT GND 2.7V TO 5.5V INPUT C1 4.7 µF C3 0.1 µF C2 0.47 µF 25V L1 47 µH TOKO A920CY-470M D1 CMDSH2-3 OV EN D2–D7 WHITE LEDs PWM OR DC CONTROL MAX1553 C4 4700pF Figure 1. Circuit with the MAX1553 Driving Six White LEDs LX SS R1 10 Ω R3 10k Ω R2 330k Ω VCC FB ON OFF BRT GND 2.7V TO 5.5V INPUT C1 10 µF C3 0.1 µF C2 0.47 µF 50V L1 4.7 µH MURATA LQH32C D1 CMDSH1-60M OV EN D2–D10 WHITE LEDs PWM OR DC CONTROL MAX1553 C4 3300pF Figure 2. Circuit with the MAX1553 Driving Nine White LEDs at Up to 15mA Functional Diagram |
Similar Part No. - MAX1554 |
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Similar Description - MAX1554 |
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