mic3289 Micrel Semiconductor, mic3289 Datasheet
mic3289
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mic3289 Summary of contents
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... Li Ion as well cell NiCad/NiMH/Alkaline batteries. preserved with a low 1µA shutdown current. The MIC3289 is available in a low profile Thin SOT23 6- lead package and a 2mm × 2mm MLF has a junction temperature range of –40°C to +125°C. ...
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... Part Number Marking MIC3289-16YD6 MIC3289-24YD6 MIC3289-16YML MIC3289-24YML Pin Configuration SW 1 GND TSOT23-6 June 2007 MIC3289 2mm×2mm MLF Digital Control White LED Driver with OVP and Digital Control Output Over Voltage Code Voltage Protection WF16 Adjustable 16V WF24 Adjustable 24V ...
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... Single pin digital control. See diagrams. N/C No connect (no internal connection to die) FB Feedback (Input): Output voltage sense node. Connect the cathode of the LED to this pin. SW Switch Node (Input): Internal power BIPOLAR collector. GND Ground (Return): Ground. GND Ground (Return): Backside pad. 3 MIC3289 M9999-061807 (408) 944-0800 ...
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... TSOT23-6 ..................................................235°C Min Typ 2.5 1.8 2.1 1.4 0.01 237 250 450 0.5 0 500 750 1 1260 100 420 140 1 1 140 35 1 1.2 MIC3289 OVP ≤ 125°C. Max Units 6 µA 263 1200 mA V 0.4 mV µA 10 µs 160 µs 500 µ ...
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... Specification for packaged product only. June 2007 Condition I = 150mA 30V R 3289- 16 only (nominal voltage) 3289- 24 only (nominal voltage) , and the ambient temperature The maximum allowable power dissipation will result in excessive die MIC3289 Min Typ Max Units 0 µ 22.5 ...
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... Micrel, Inc. Typical Characteristics June 2007 6 MIC3289 M9999-061807 (408) 944-0800 ...
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... Micrel, Inc. Functional Characteristics June 2007 7 MIC3289 M9999-061807 (408) 944-0800 ...
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... LEDs can be turned particular brightness level. State Diagram The MIC3289 logic state flow is depicted in Figure 1 below. Brightness level changes are negative edge triggered while all other state changes require a logic high or low be applied to the DC pin for a specific length of time ...
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... Micrel, Inc. With an input supply voltage between 2.5V and 6.5V and a logic-level LOW applied to the DC pin, the MIC3289 will enter State 0, shutdown, and remain there consuming less than 1µA. Start Up Presuming no presetting brightness command is issued (discussed in a later section), the MIC3289 will start-up in its default state approximately 140µ ...
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... The MIC3289 internal circuit can be changed from Count Down Mode to Count Up Mode and vice versa. The user may elect to send a Mode Change as shown in Figure 4 to set the MIC3289 to step up the brightness level with subsequent programming pulses. For proper operation, ensure the DC pin has remained high for at least t (140µ ...
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... DC pin is first pulled HIGH otherwise the MIC3289 may continue to start at the full (default) brightness level. MODE_DOWN Figure 12 shows the correct presetting sequence to set the MIC3289 brightness to level 6 prior to start up. The sequence is initiated by driving the DC pin low for a period exceeding t (100µs ...
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... Micrel, Inc. External Component Selection The MIC3289 can be used across a wide range of applications. The table below shows recommended inductor and output capacitor values for applications driving 3-6 LEDs in series assuming a 20mA maximum drive current from Li-Ion battery source. Series LEDs L Manufacturer LQH43MN220K03 (Murata) 22 µ ...
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... Micrel, Inc. Layout Recommendations June 2007 Top Bottom 13 MIC3289 M9999-061807 (408) 944-0800 ...
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... Micrel, Inc. Package Information June 2007 6-Pin TSOT23 (D) 14 MIC3289 M9999-061807 (408) 944-0800 ...
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... Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully June 2007 8-Pin MLF™ (ML) indemnify Micrel for any damages resulting from such use or sale. © 2007 Micrel, Incorporated. 15 MIC3289 M9999-061807 (408) 944-0800 ...
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... Micrel, Inc. Revision History Date Edits by: June 2007 16 MIC3289 Revision Number M9999-061807 (408) 944-0800 ...