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AME5130AEEVADJ Datasheet(PDF) 1 Page - Analog Microelectronics |
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AME5130AEEVADJ Datasheet(HTML) 1 Page - Analog Microelectronics |
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1 / 16 page  AME, Inc. 1 AME5130 Micropower Step-Up DC/DC Converter The AME5130 is a fixed off-time step-up DC/DC con- verter in a small 5-lead SOT-25 package.The AME5130 is ideal for LCD panels requiring low current and high effi- ciency as well as LED applications for cellular phone back- lighting, PDAS,and other hand-held devices. The low 400ns off-time allows the use of tiny external compo- nents. AME5130 can drive up 8 white LEDs from a single Li- Ion battery DC 2V to 5.5V; can be turned on by putting more than 1V at pin 4(RUN). To control LED brightness, the LED current can be pulsed by applying a PWM (pulse width modulated) signal with a frequency range of 100Hz to 50KHz to the RUN pin. n General Description n Features n Applications n Typical Application l 0.7 Ω internal switch l Uses small surface mount components l Adjustable output voltage up to 20V l 2V to 5.5V input range l Input undervoltage lockout l 0.01 µA shutdown current l Small 5-Lead SOT-25 package l White LED Back-Lighting l Hand-held Devices l Digital Cameras l Portable Applications l LCD Bias Power Figure 1 Six White LEDs Application in Li-lon ： Battery Figure 2 Typical 20V Application ： C IN 4.7 µF Ceramic 2 5 1 L 15 µH 4 V IN 2.5V-4.2V 3 R2 33K D AME5130 SW V IN FB GND RUN C OUT 4.7 µF Ceramic R1 510K 20V 20mA C IN 4.7 µF Ceramic AME5130 V IN SW FB RUN GND 2 5 1 L 10 µH 4 0V >1.1V V IN 2.5V-4.2V 3 R2 80 Ω C OUT 4.7 µF Ceramic D Option for 6LEDs I LED * I LED=VFB/R2 |
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