(China (Mainland))
Product Summary
The LP5521TMX is a three channel LED driver designed to produce variety of lighting effects for mobile devices. High efficiency charge pump enables LED driving over full Li-Ion battery voltage range. The device has a program memory for creating variety of lighting sequences. When program memory has been loaded, LP5521TMX can operate independently without processor control. Applications are (1)Fun / indicator lights; (2)LCD sub-display backlighting; (3)Keypad RGB backlighting and phone cosmetics; (4)Vibra, speakers, waveform generator.
Parametrics
LP5521TMX absolute maximum ratings: (1)V(VDD , VOUT, R, G, B): -0.3V to +6.0V; (2)Voltage on Logic Pin: -0.3V to VDD +0.3V; (3)Continuous Power Dissipation (Note 3): Internally Limited; (4)Human Body Model: 2 kV; (5)Machine Model: 200V; (6)VDD: 2.7 to 5.5V; (7)Recommended Charge Pump Load Current IOUT: 0 to 100 mA; (8)Junction Temperature (TJ)Range: -30°C to +125°C; (9)Ambient Temperature (TA)Range (Note 6): -30°C to +85°C.
Features
LP5521TMX features: (1)Adaptive charge pump with 1x and 1.5x gain provides up to 95% LED drive efficiency; (2)Charge pump with soft start and overcurrent/short circuit protection; (3)Low input ripple and EMI; (4)Very small solution size, no inductor or resistors required; (5)200 nA typical shutdown current; (6)Automatic power save mode; (7)Autonomous operation without external control; (8)Large SRAM program memory; (9)Two general purpose digital outputs; (10)microSMD-20 package, 0.4 mm pitch; (11)Bumped LLP-24 package, 0.5 mm pitch.
Diagrams
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 LP5521TMX/NOPB |
National Semiconductor (TI) |
LED Lighting Drivers |
Data Sheet |
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LP5520TL |
Other |
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Data Sheet |
Negotiable |
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LP5520TL/NOPB |
National Semiconductor (TI) |
LED Lighting Drivers |
Data Sheet |
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LP5520TLX/NOPB |
National Semiconductor (TI) |
LED Lighting Drivers |
Data Sheet |
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LP5521TM/NOPB |
National Semiconductor (TI) |
LED Lighting Drivers 3 Ch Prog Led Driver |
Data Sheet |
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LP5521TMEV |
National Semiconductor (TI) |
Power Management IC Development Tools LP5521TMEV EVAL BOARD |
Data Sheet |
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LP5521TMX/NOPB |
National Semiconductor (TI) |
LED Lighting Drivers |
Data Sheet |
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