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MAX1570ETE Datasheet(PDF) 8 Page - Maxim Integrated Products |
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MAX1570ETE Datasheet(HTML) 8 Page - Maxim Integrated Products |
8 / 11 page White LED Current Regulator with 1x/1.5x High-Efficiency Charge Pump 8 _______________________________________________________________________________________ EN_ INPUT LOGIC LEVELS MODE LED CURRENT EN1 = 0, EN2 = 0 Shutdown mode 0 EN1 = 0, EN2 = 1 On, VSET = 200mV, LED1 threshold = 200mV 1/3 EN1 = 1, EN2 = 0 On, VSET = 400mV, LED1 threshold = 300mV 2/3 EN1 = 1, EN2 = 1 On, VSET = 600mV, LED1 threshold = 400mV Full Table 1. Enable Input Modes OUTPUT (mA) CIN (µF) C1 (µF) C2 (µF) COUT (µF) 40 1 0.22 0.22 4.7 80 1 0.47 0.47 4.7 150 1 1.0 1.0 4.7 Table 2. Capacitor Selection COMPONENT NAME VALUE (µF) MANUFACTURER PART NO. DESCRIPTION CIN 1 Taiyo Yuden JMK107BJ105MA 1µF ±20%, 6.3V X5R ceramic capacitor (0603) COUT 4.7 Taiyo Yuden JMK212BJ475MG 4.7µF ±20%, 6.3V X5R ceramic capacitor (0805) 1 Taiyo Yuden JMK107BJ105MA 1µF ±20%, 6.3V X5R ceramic capacitor (0603) 0.47 Taiyo Yuden LMK107BJ474MA 0.47µF ±20%, 10V X5R ceramic capacitor (0603) C1 and C2 0.22 Taiyo Yuden LMK107BJ224KA 0.22µF ±10%, 10V X7R ceramic capacitor (0603) Table 3. Capacitor Manufacturers |
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