lp5522tmx National Semiconductor Corporation, lp5522tmx Datasheet
lp5522tmx
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lp5522tmx Summary of contents
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... LED is turned off and once controller is disabled all supporting functions are also shut down. Very small micro SMD package together with minimum number of external components is a best fit for handheld devices. Typical Application © 2007 National Semiconductor Corporation Features ■ Programmable blinking sequence — programmable pulses — ...
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... Connection Diagrams and Package Mark Information Connection Diagrams Micro SMD-6 package, 0.815 x 1.215 x 0.60 mm body size, 0.4 mm pitch NS Package Number TMD06AAA Top View PACKAGE MARK ORDERING INFORMATION Order Number LP5522TM LP5522TMX PIN DESCRIPTIONS Pin Name A1 VDD B1 ISET C1 CTRL A2 LED B2 GND C2 GNDT A: Analog Pin D: Digital Pin G: Ground Pin P: Power Pin I: Input Pin O: Output Pin www ...
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Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. V (VDD, LED, ISET) Voltage on logic pin (CTRL) -0.3V to VDD +0.3V Continuous Power Dissipation (Note 3) Junction ...
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Note 4: For detailed soldering specifications and information, please refer to National Semiconductor Application Note AN1112 : Micro SMD Wafer Level Chip Scale Package. Note 5: The Human body model is a 100 pF capacitor discharged through a 1.5 kΩ ...
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Modes of Operation RESET In the reset mode all functions are off and all registers are reset to the default values. Reset is entered always if internal Power On Reset (POR) is active. Power On Reset will activate during the ...
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LED Driver Operational Description The LP5522 LED driver is constant current source. Current can be set with external resistor (R resistor and LED is 1:400. R current correlates to ISET reference voltage (V ISET adjusted using equation I = 480/R ...
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Line Regulation Control Interface Operational Description LP5522 has one digital control input, CTRL. Threshold levels of CTRL input are fixed to enable control from low voltage controller. CTRL signal is used to control the mode of the circuit. A rising ...
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LED Controller Commands and Operation There are four commands available for LP5522. Command Run Training start Training end Run once RUN COMMAND One rising edge of CTRL signal within command entering period is interpreted as Run command. In programmed mode ...
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RUN ONCE COMMAND Programmed blinking sequence is performed once after Run Once command. Four rising edges of CTRL signal within command entering period is interpreted as Run Once command. If CTRL is kept high after command entering period the programmed ...
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TRAINING END COMMAND Blinking sequence programming ends once Training End command is introduced. Three rising edges within time period interpreted as Training End command. Note that blank period is also reguired after Training End command. During blanc ...
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LED OFF time counter can saturate also if Training end command is not given or no new ON time has been started. In this case saturated OFF time is recorded and chip goes to Standby. Recommended External Components INPUT CAPACITOR, ...
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Physical Dimensions The dimension for X1, X2 and X3 are as given: — 0.815 mm ±0.03 mm — 1.215 mm ±0.03 mm — 0.60 mm ±0.075 mm See National Semiconductor Application Note 1112 Micro ...
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Notes 13 www.national.com ...
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... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...