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MP3388 数据表(PDF) 7 Page - Monolithic Power Systems |
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MP3388 数据表(HTML) 7 Page - Monolithic Power Systems |
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7 / 14 page  MP3388- 50V, 8-STRING WHITE LED DRIVERS MP3388 Rev. 1.0 www.MonolithicPower.com 7 12/16/2011 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2011 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS VIN =15V, 10 LEDs in series, 8 strings parallel, 20mA/string, unless otherwise noted. 70 75 80 85 90 95 100 4 9 14 19 24 29 INPUT VOLTAGE (V) Efficiency vs. Input Voltage Steady State Vsw 20V/div Vsw 20V/div VIN 10V/div VLED8 500mV/div VOUT/AC 500mV/div VOUT 20V/div ILED 100mA/div Vsw 20V/div VLED8 20V/div VOUT 20V/div ILED 100mA/div ILED 100mA/div Vsw 20V/div VEN 5V/div VOUT 20V/div ILED 100mA/div Vsw 20V/div VPWMI 5V/div VOUT 20V/div ILED 100mA/div Vsw 20V/div VFAULT 5V/div VOUT 20V/div ILED 100mA/div Vsw 20V/div VFAULT 10V/div VOUT 20V/div ILED 100mA/div 400ns/div 2ms/div 2ms/div 1ms/div 200us/div 200us/div 400ms/div Vin Startup Ven Startup PWM Dimming fPWM=2kHz, DPWM=50% Open LED Protection open all LED strings at working Short LED Protecton short Vout to LEDx at working Short LED Protection short Vout to GND at working |
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