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SP7680 Datasheet(PDF) 2 Page - Sipex Corporation |
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SP7680 Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 6 page Jun20-07 SP7680 Evaluation Board Manual © 2007 Sipex Corporation Page 2 of 6 TO GET STARTED: 1. Connect VIN from VIN to GND (VIN range 2.7V to 5.5V). 2. Apply I 2C connections of SDA, SCL and GND to J9. 3. Connect LED Displays with cathodes to T1 to T7 for LED1 to LED7. Or, connect surface mount LEDs with solder to the board at D1 to D7. 4. Use I 2C serial connection and software to control LED1 to LED7. 5. To measure current through LED1 to LED7 remove zero ohm resistor at RS1 to RS7 and add SM 0603 1 ohm resistors to RS1 to RS7. Then measure current with DVM across RS1 to RS7 with test points at J1 to J7. Note: 1mV across J1 to J7 equals 1mA of current through LED1 to LED7. ___________________________________________________________ POWER SUPPLY DATA SP7680 Efficiency Vs Vin, 6 WLEDs 50 60 70 80 90 100 3.0 3.3 3.6 3.9 4.2 4.5 Vin (V) ILED=15mA ILED=20mA ILED=25mA SP7680 Efficiency Vs Vin, 7 WLEDs 50 60 70 80 90 100 3.0 3.3 3.6 3.9 4.2 4.5 Vin (V) ILED=15mA ILED=20mA ILED=25mA Figure 1. VOUT Efficiency 6 LEDs Figure 2. VOUT Efficiency 7 LEDs Output Current Vs Vin, 6 WLEDs 50 100 150 200 3.0 3.3 3.6 3.9 4.2 Vin (V) ILED=25mA ILED=20mA ILED=15mA Output Current Vs Vin, 7 WLEDs 50 100 150 200 3.0 3.3 3.6 3.9 4.2 Vin (V) ILED=15mA ILED=20mA ILED=25mA Figure 3.Output Current 6 LEDs Figure 4. Output Current 7 LEDs |
Similar Part No. - SP7680_07 |
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Similar Description - SP7680_07 |
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