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MAX8647ETE+ Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX8647ETE+ Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 15 page Ultra-Efficient Charge Pumps for Six White/RGB LEDs in 3mm x 3mm Thin QFN _______________________________________________________________________________________ 5 EFFICIENCY vs. SUPPLY VOLTAGE (DRIVING SIX LEDs) INPUT VOLTAGE (V) 3.9 3.6 3.3 3.0 10 20 30 40 50 60 70 80 90 100 0 2.7 4.2 6.4mA/LED 20.8mA/LED LEDs HAVE MISMATCHED VF EFFICIENCY vs. Li+ BATTERY VOLTAGE (DRIVING SIX LEDs) Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED) 3.4 3.5 3.6 3.7 3.8 3.9 50 60 70 80 90 100 40 4.2 3.0 1.6mA/LED 16mA/LED LEDs HAVE MISMATCHED VF EFFICIENCY vs. Li+ BATTERY VOLTAGE (DRIVING SIX LEDs) Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED) 3.4 3.5 3.6 3.7 3.8 3.9 50 60 70 80 90 100 40 4.2 3.0 6.4mA/LED 20.8mA/LED LEDs HAVE MISMATCHED VF INPUT CURRENT vs. INPUT VOLTAGE (DRIVING SIX LEDs) INPUT VOLTAGE (V) 3.7 3.2 20 40 60 80 100 120 140 160 180 200 0 2.7 4.2 LEDs HAVE MISMATCHED VF ILED = 16mA ILED = 20.8mA ILED = 6.4mA ILED = 1.6mA INPUT CURRENT vs. Li+ BATTERY VOLTAGE (DRIVING SIX LEDs) Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED) 3.5 3.6 3.4 3.7 3.8 3.9 20 40 60 80 100 120 140 160 180 200 0 4.2 3.0 1.6mA/LED 6.4mA/LED 16mA/LED 20.8mA/LED LEDs HAVE MISMATCHED VF INPUT CURRENT vs. INPUT VOLTAGE (RGB MODULE) INPUT VOLTAGE (V) 3.7 3.2 10 20 30 40 50 60 70 80 90 100 0 2.7 4.2 ILED = 20.8mA ILED = 16mA ILED = 4.8mA ILED = 1.6mA RGB MODULE: LUMEX SML-LX3632SISUGSBC INPUT CURRENT vs. Li+ BATTERY VOLTAGE (RGB MODULE) Li+ BATTERY VOLTAGE (V, TIME-WEIGHTED) 3.5 3.6 3.4 3.7 3.8 3.9 10 20 30 40 50 60 70 80 90 100 0 4.2 3.0 1.6mA/LED 6.4mA/LED 16mA/LED 20.8mA/LED RGB MODULE: LUMEX SML-LX3632SISUGSBC INPUT RIPPLE VOLTAGE vs. SUPPLY VOLTAGE (DRIVING SIX WHITE LEDs) SUPPLY VOLTAGE (V) 3.7 3.2 2 4 6 8 10 12 14 16 0 2.7 4.2 20.8mA/LED 16mA/LED 6.4mA/LED 1.6mA/LED LEDs HAVE MISMATCHED VF 15.0 15.6 15.4 15.2 16.0 15.8 16.8 16.6 16.4 16.2 17.0 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 LED CURRENT MATCHING vs. INPUT VOLTAGE (16mA/LED) INPUT VOLTAGE (V) Typical Operating Characteristics (continued) (VIN = 3.6V, VEN_ = VIN, circuit of Figure 1, TA = +25°C, unless otherwise noted.) |
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