Datasheet LT3518 (Analog Devices) - 7
| Fabricante | Analog Devices |
| Descripción | Full-Featured LED Driver with 2.3A Switch Current |
| Páginas / Página | 20 / 7 — block DiagraM. Figure 1. Buck Mode LED Driver |
| Formato / tamaño de archivo | PDF / 465 Kb |
| Idioma del documento | Inglés |
block DiagraM. Figure 1. Buck Mode LED Driver
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Versión de texto del documento
LT3518
block DiagraM
LED ARRAY CIN C R FILT SENSE PVIN ISP ISN TG TGEN PWM SW SW + – VISP CURRENT X10 SENSE AMPLIFIER VISP – 7V SHDN – MOSFET DRIVER CTRL + A1 + ERROR 1V AMPLIFIER + MAIN SWITCH – DRIVER A3 Q1 + MAIN A4 R Q 1.01V + + S SWITCH A2 FB – PWM COMPARATOR + VC A8 – GND SYNC SS RAMP GENERATOR + VIN A5 2.5MHz TO 250kHz 1V – OSCILLATOR 100µA VREF VIN 10µA 1V + + SS + A6 Q2 A7 – 2V – FREQ RT ADJUST VIN 3518 F01
Figure 1. Buck Mode LED Driver
3518ff For more information www.linear.com/LT3518 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
block DiagraM
LED ARRAY CIN C R FILT SENSE PVIN ISP ISN TG TGEN PWM SW SW + – VISP CURRENT X10 SENSE AMPLIFIER VISP – 7V SHDN – MOSFET DRIVER CTRL + A1 + ERROR 1V AMPLIFIER + MAIN SWITCH – DRIVER A3 Q1 + MAIN A4 R Q 1.01V + + S SWITCH A2 FB – PWM COMPARATOR + VC A8 – GND SYNC SS RAMP GENERATOR + VIN A5 2.5MHz TO 250kHz 1V – OSCILLATOR 100µA VREF VIN 10µA 1V + + SS + A6 Q2 A7 – 2V – FREQ RT ADJUST VIN 3518 F01
Figure 1. Buck Mode LED Driver
3518ff For more information www.linear.com/LT3518 7 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts