ame5142c AME, Inc., ame5142c Datasheet
ame5142c
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ame5142c Summary of contents
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... The input and out- put capacitor can be as small as 0.22 F, saving space and cost versus alternative solutions. A low feedback volt- age minimizes power loss in the current setting resistor for better efficiency. The AME5142C is available in SOT- 26/TSOT-26 packages. The feedback trip point of AME5142C is 0.104V. n Features l 1 ...
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... Function Block Diagram EN Vref IN UVLO 1.25V + 0.104V Soft Rc Start High Efficiency 6 White LED Driver SHUTDOWN CIRCUITRY OTP + RAMP - GENERATOR Oscillator Figure 4 : AME5142C Block Diagram With Open LED Protection OVP Vref DRIVER MS1 CURRENT LIMIT COMP + - GND SW MS Rev. B.01 ...
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... GND OVP 6 IN Rev. B.01 High Efficiency 6 White LED Driver AME5142CAEEYxxx GND OVP 6. IN Die Attach: Conductive Epoxy Pin Description Power Switch input. This is the drain of the internal NMOS power switch. Minimize the metal trace area connected to this pin to minimize EMI. ...
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... AME AME5142C n Ordering Information AME5142C xxx x Operating Ambient Pin Temperature Configuration Range - +85 2. GND (SOT-26 (TSOT-26 OVP High Efficiency 6 White LED Driver With Open LED Protection Special Feature Output Voltage Number of Pins ...
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... Part Number Marking* AME5142CAEEYADJZ AME5142CAEEYADJY Note: ww represents the date code and pls refer to Date Code Rule page on Package Dimension line on top of the first letter represents lead free plating such as CABww. Please consult AME sales office or authorized Rep./Distributor for the availability of package type. ...
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... AME AME5142C n Absolute Maximum Ratings Parameter Input Supply Voltage EN, FB Voltages SW, OVP Voltage ESD Classification Caution: Stress above the listed in absolute maximum ratings may cause permanent damage to the device. * HBM B: 2000V ~ 3999V n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Range ...
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... AME AME5142C n Electrical Specifications V = 4.2V Parameter Input Voltage Quiescent Current Feedback Trip Point FB Pin Bias Current Switch Current Limit Switch On-Resistance SW Leakage Current Swich frequency Maximum Duty Cycle Shutdown Supply Current Over Temperature Protection Over Voltage Protection Input Undervoltage Lockout ...
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... F ceramic output capacitors creating an overall small solution for white LED applications. If the output ever exceeds OVP, the AME5142C will shut down. AME5142C will not switch again until the power is re- cycled. Under Voltage Protection The AME5142C has an UVP comparator to turn the ...
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... I I (max) - LOAD CL Thermal Considerations At higher duty cycles, the increased ON time of the FET means the maximum output current will be determined by power dissipation within the AME5142C switch. The switch power dissipation from ON-state conduction is calculated by (ON) (SW) ...
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... Schottky Rectifier 10 High Efficiency 6 White LED Driver OVP GND AME5142CAEEYADJZ Description Part Num. C1608Y5V0J475ZT C2012X7R1E105KT Chip Resistor FCR05-F-T-0750 Inductor CDRH3D14/HP-4R7 B130 With Open LED Protection D1 V 30V_1A Manufacture TDK TDK ...
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... AME5142C Operating Instructions 1. Connect VDD to the power source’ s positive output. 2. Connect GND to supply ground. 3. Applying a logic signal to EN pin will enable the AME5142C. Logic high (V puts it into low current shutdown mode. Application Information Setting Output Current The regulated output current is set with an external resistor divider (R5 in Figure .) from the output to the V ...
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... A good PCB layout could make AME5142C work its best performance. PCB Layout Example The PCB layout example of AME5142C for six strings of LEDs to be driven in one parallel application. The placements is suitable and smooth, and follows the layout guide lines. 1. Use a ground plane under the switching regulator to minimize inter-plane coupling. ...
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... FB 150 125 100 0.56 1.12 VDC(V) Rev. B.01 High Efficiency 6 White LED Driver 2. AME5142C GND Figure 6. Dimming Control Using a DC Voltage 1.68 2.24 2.80 With Open LED Protection V OUT C OUT SW 0.22 F OVP R3 5. 5.1 91K VDC Dimming VDC ...
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... V VS Duty Cycle FB 150 125 100 0.2 0.4 Duty Cycle 14 High Efficiency 6 White LED Driver 2. AME5142C EN GND 2.8V Figure 7. Dimming Control Using a Filtered PWM Signal 0.6 0.8 1 With Open LED Protection V OUT SW 0.22 F OVP R3 5. 91K 5 ...
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... AME5142C EN OVP GND FB Figure 9: Circuit For Driving 2 Strings of 3 White LEDs 3. AME5142C EN OVP GND FB Figure 10: Circuit For Driving 2 Strings of 3 White LEDs Rev. B.01 High Efficiency 6 White LED Driver With Open LED Protection V OUT 90 C OUT ...
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... H V 3. AME5142C EN GND Figure 12: Circuit For Driving 2 Strings of 4 White LEDs 3. AME5142C EN GND Figure 13: Circuit For Driving 2 Strings of 5 White LEDs 16 High Efficiency 6 White LED Driver V OUT C OUT OVP 7.5 7.5 V OUT C ...
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... IN 4 AME5142C EN OVP GND Figure 15: Circuit For Driving 2 Strings of 6 White LEDs 3. AME5142C EN OVP GND Figure 16: Circuit For Driving 2 Strings of 6 White LEDs Rev. B.01 High Efficiency 6 White LED Driver V OUT C OUT 7.5 7.5 V OUT C OUT ...
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... AME AME5142C n Characterization Curves Max Duty Cycle vs. Temperature 92.0 91.8 91.6 91.4 91.2 91.0 90.8 90.6 90.4 90.2 90.0 89.8 89.6 89.4 89.2 89.0 88.8 88.6 88.4 88.2 88.0 - Temperature ( Switch RDSON 1.80 1.60 1. 1.20 A 1.00 0.80 0.60 0.40 0.20 2.7 3.1 3.5 3.9 V (V) IN Efficiency vs. Load Current Dirving 4 LEDs 100 2.7 3.1 3.5 3 High Efficiency 6 White LED Driver 75 100 125 4.3 4.7 5.1 5.5 4.3 4.7 5.1 5.5 With Open LED Protection Oscillator Frequency vs ...
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... AME AME5142C Current Limit vs. V 1000 950 900 850 800 750 700 650 2.7 3.1 3.5 3.9 V (V) IN Dimming Control for Driving 6LEDs 1mS / div V = 2.7V; 6 LEDs 20mA OUT div 200Hz 10V / div, DC OUT 10V / div Rev. B.01 High Efficiency 6 White LED Driver IN 4 ...
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... AME AME5142C Start-Up / Shutdown 200 S / Div V = 2.8V; 1 LEDs 20mA OUT 2V/div Inductor Current, 100mA / div 10V / div, DC OUT Start-Up / Shutdown 200 S / div V = 5.5V; 6 LEDs 20mA OUT div Inductor Current, 500mA / div ...
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... AME AME5142C Typical Switching Waveform div V = 5.5V; 6 LEDs 20mA OUT 10V / div 100mV / div, AC OUT 3) Input Current, 200mA / div, DC Inductor = OUT Rev. B.01 High Efficiency 6 White LED Driver = 0.22 F With Open LED Protection Start up into Openload ...
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... AME AME5142C n Date Code Rule Marking Date Code Tape and Reel Dimension SOT-26 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) ...
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... AME AME5142C n Tape and Reel Dimension TSOT-26 PIN 1 Carrier Tape, Number of Components Per Reel and Reel Size Package Carrier Width (W) TSOT-26 8.0±0.1 mm Rev. B.01 High Efficiency 6 White LED Driver P AME AME Pitch (P) Part Per Full Reel 4.0±0.1 mm With Open LED Protection W Reel Size 3000pcs 180± ...
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... AME AME5142C n Package Dimension SOT-26 Top View D e PIN1 S1 Front View b TSOT-26 Top View D e PIN1 S1 Front View b 24 High Efficiency 6 White LED Driver With Open LED Protection Side View SYMBOLS θ Side View SYMBOLS θ 1 ...
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... These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. ...