AL8807AMP-13 Diodes Inc., AL8807AMP-13 Datasheet
AL8807AMP-13
Specifications of AL8807AMP-13
Related parts for AL8807AMP-13
AL8807AMP-13 Summary of contents
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Description The AL8807A is a step-down DC/DC converter designed to drive LEDs with a constant current. The device can drive white high brightness LEDs in series from a voltage source 36V. The AL8807A has ...
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Pin Descriptions Pin Number Pin Name SOT25 MSOP-8EP Switch Pin. Connect inductor/freewheeling diode here, minimizing track length at this pin to reduce EMI. GND GND Pin LED current Analog Dimming Control Input. – ...
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Absolute Maximum Ratings Symbol ESD HBM Human Body Model ESD Protection ESD MM Machine Model ESD Protection V Continuous V Pin Voltage Relative to GND Voltage Relative to GND V SW CTRL Pin Input Voltage V CTRL ...
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Electrical Characteristics (@T Symbol Parameter V Internal Regulator Start Up Threshold INSU V Internal Regulator Hysteresis Threshold V INSH I Quiescent Current Q I Input Supply Current S V Set Current Threshold Voltage TH V Set Threshold Hysteresis TH-H V ...
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Typical Performance Characteristics 400 CTRL SET IN 350 T = +25°C A 300 250 200 150 100 (V) IN Figure 1 Supply Current ...
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Typical Performance Characteristics 10ns/div 2V/div T =25ºC A Figure 7 SW Output Rise Time 22 100m V = 12V 20 LEDs L = 68µH 18 25°C A 16% 14 150m 12% S ...
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Typical Performance Characteristics 100% 90% 80% 70% 60% 50% 40% 30% 20% 10 INPUT VOLTAGE (V) Figure 13 Duty Cycle vs. Input Voltage 800 Ω 300m S 700 L = 68µH ...
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Typical Performance Characteristics - INPUT VOLTAGE (V) Figure 19 LED Current Deviation vs. Input Voltage ...
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Typical Performance Characteristics LEDs 6 3 LEDs 6 LEDs 4 LEDs 5 LEDs 4 7 LEDs 2 1 LED 100µH -6 Ω 100m 25° ...
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Application Information AL8807A Operation The AL8807A is a hysteretic LED current switching regulator sometimes known as an equal ripple switching regulator. In normal operation, when (See voltage is applied at +V Figure 31), the AL8807A internal switch is turned on. ...
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Application Information (cont.) Analog Dimming Further control of the LED current can be achieved by driving the CTRL pin with an external voltage lower than 2.5V; the average LED current becomes: Where V is nominally 2.5V REF The LED current ...
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Application Information (cont.) Soft Start The AL8807A does not have in-built soft-start action; this can be seen in Figure 35. Figure 35 Start up without any capacitor on CTRL Pin (V At power–up V rises exponentially, due to the bulk ...
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Application Information (cont.) Input Bulk Capacitor Selection The small size of ceramic capacitors makes them ideal for AL8807A applications. X5R and X7R types are recommended because they retain their capacitance over wider voltage and temperature ranges than other types such ...
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... MSOP-8EP - 51mm x 51mm: AL8807AMP’s θ Figure 40 shows that the MSOP-8EP version of the AL8807A can handle more power than its SOT25 version. So the AL8807AMP is the preferred variant when operating at larger supply voltage rails (>24V) and/or driving larger LED currents. This is especially true in high power density/space constraint applications such as high power 24VAC MR16 applications ...
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Application Information (cont.) EMI and Layout Considerations The AL8807A is a switching regulator with fast edges and measures small differential voltages result of this care has to be taken with decoupling and layout of the PCB.To help with ...
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Application Information (cont.) Fault Condition Operation Open circuit LEDs The AL8807A has by default open LED protection. If the LEDs should become open circuit the AL8807A will stop oscillating; the SET pin will rise to V and the SW pin ...
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... SOT25 (Top View A~Z : Green MSOP-8EP Y : Year : 0~9 AL8807A W : Week: A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week Part Number Package AL8807AMP-13 MSOP-8EP www.diodes.com AL8807A 7” Tape and Reel Quantity Part Number Suffix -7 -13 C6 September 2012 © Diodes Incorporated ...
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Package Outline Dimensions Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for latest version. (1) SOT25 (2) MSOP-8EP 8Xb AL8807A ...
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Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for latest version. (1) SOT25 (2) MSOP-8EP AL8807A Document number: DS35990 Rev Dimensions Value (in mm ...
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DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY ...