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AME5136AEVBADJZ-3 Datasheet(PDF) 1 Page - Analog Microelectronics |
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AME5136AEVBADJZ-3 Datasheet(HTML) 1 Page - Analog Microelectronics |
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1 / 15 page  AME, Inc. 1 AME5136 Integrated White LED Driver With Organic LED Display Power Supply The AME5136 is a dual Boost DC/DC converter, de- signed to drive up to 4 white LEDs with a constant cur- rent and to power an organic LED display with a constant voltage. According to SEL pin status, the AME5136 can either regulates output current flowing through series con- nected LEDs or regulate output voltage applying to OLED. A single external resistor is used to set the maximum LED current. The LED current can be adjusted by apply- ing a PWM signal to the EN pin. Pulling the EN pin to GND disables the chip and reduces the supply current to less than 1uA. Additional features include a low-side NFET switch that can turn off the LED string with no DC current path to ground. Other features include OVP, OCP, UVP and OTP. The AME5136 is available in a small DFN-10( 3mmx3mmx0.85mm) package. n General Description n Features n Applications l Integrated OLED and White-LED Driver l Wide Input Voltage Range: 2.7V to 5.5V l Adjustable output voltage up to 20V l Complete Protection: OVP, OTP, UVP l PWM Dimming Control l Small External Components l Cycle-By-Cycle Current Limit l All AME's Lead Free Products Meet RoHS Standards l White LED Back-Lighting l Hand-held Devices l Digital Cameras l Flip-phones / Clam-shell Cellular Phones l High-fashion cellular phones Figure 2. 4 LEDs for Main Panel and 3 LEDs for SUB Panel Figure 1. Main LEDs Display and OLED SUB Display n Typical Application 23 . 1 1 2 1 × + = SUB SUB SUB R R V FB1 SW GND L D V IN AME5136 OVP R SUB1 R SUB2 FB2 CH2 SEL CH1 10 µH Main Display OLED SUB Display 0V >1.5V V IN 2.7V~4.2V C IN 4.7 µF EN C OUT1 1 µF VFB1 R FB1 ILED1= 0.21 R FB1 ILED1 V SUB Main 47P FB1 SW GND L D V IN AME5136 OVP FB2 CH2 SEL CH1 10 µH Main Display C OUT2 1 µF V SUB R FB2 0V >1.5V R FB1 C OUT1 1 µF C IN 4.7 µF V IN 2.7V~4.2V EN V FB1 V FB2 ILED2 ILED1= 0.21 R FB1 ILED1 ILED2= 1.23 R FB2 V SUB Main |
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