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AME5130 Datasheet(PDF) 1 Page - Analog Microelectronics |
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AME5130 Datasheet(HTML) 1 Page - Analog Microelectronics |
1 / 16 page AME 1 AME5130 Micropower Step-Up DC/DC Converter Rev.F.02 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(EN). 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 EN 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 All AME’ s Lead Free Product Meet RoHS Standard 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 * I LED=VFB/R2 C IN 4.7 µF Ceramic AME5130 V IN SW FB EN 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 C IN 4.7 µF Ceramic 2 5 1 L 15 µH 4 V IN 2.5V-4.2V 3 R2 13K D AME5130 SW V IN FB GND EN C OUT 4.7 µF Ceramic R1 200K 20V 20mA |
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