MP1519 MPS, MP1519 Datasheet
MP1519
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MP1519 Summary of contents
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... The Future of Analog IC Technology DESCRIPTION The MP1519 is a fully automatic driver for powering four white LEDs, with forward voltage, from a single Li-Ion or three NiMH cells. The driver performs all of the sensing and control to run the LEDs at an optimum charge pump ratio for efficiency without an expensive inductor ...
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... Matching is defined as the difference of the maximum to minimum current divided by the sum of the maximum and minimum currents. 5) Standby mode switches to shutdown when the output voltage on LEDC drifts back to GND. MP1519 Rev. 1.9 7/27/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER ABSOLUTE MAXIMUM RATINGS V to GND .............................................. 6.5V BATT Power Dissipation (QFN) ........................... 1.0W Logic Inputs to GND ................... – ...
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... Circuit of Figure VOLTAGE (V) MP1519 Rev. 1.9 7/27/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER Voltage Ripple in 1.5x Mode 4 x 10mA LEDs V BATT 20mV/div. V LEDC 20mV/div. 400ns/div. 100mA/div. = 3.6V BATT 2 3 www.MonolithicPower.com © ...
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... LED Current Adjust Input. Connect a resistor between RADJ and GND to set the LED current. 11 RADJ All of the LEDs regulate at the same current. See Setting the LED Current. Enable Input. Drive EN high to turn on the MP1519, drive EN low to shutdown the MP1519 use burst-mode brightness control, drive EN with a PWM signal. See Burst Mode Dimming. ...
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... REFERENCE GND 3, 10 MP1519 Rev. 1.9 7/27/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER The MP1519 employs soft switching and soft-start to prevent overloading the battery source at turn-on and charge pump mode switching. While ...
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... R1 LED MP1519 Rev. 1.9 7/27/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER Choose R1 for the desired LED current according to the equation: Where kΩ, and I values for R1 are greater than 1.2kΩ. ...
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... TM TYPICAL APPLICATION CIRCUITS BATT ENABLE GND MP1519 Rev. 1.9 7/27/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER MP1519 BATT C1A C1B 11 6 RADJ C2A GND C2B 14 LED1 15 LED2 ...
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... Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP1519 Rev. 1.9 7/27/2006 MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER QFN16 (3mm x 3mm) 0.30 13 0.50 ...