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FAN5646UC00X Datenblatt(PDF) 1 Page - Fairchild Semiconductor |
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FAN5646UC00X Datenblatt(HTML) 1 Page - Fairchild Semiconductor |
1 / 2 page August 2009 © 2009 Fairchild Semiconductor Corporation www.fairchildsemi.com FAN5646 • Rev. 1.0.1 FAN5646 Programmable Indicator “Soft” LED Blinker with TinyWire™ Single-Wire Interface Features LED “Soft” Blink: with Logarithmic Fade Up and Fade Down for Power Savings Follow or Repeat Pattern Mode for Blinking when Applications Processor is Powered Down Default Pattern Optionally Modified using TinyWire™ Single-Wire Digital Control for: – LED Current Rise / Fall Time – tON and tOFF for Up to Two Pulses High-Side Constant Current LED Driver: – 20mA Maximum Output Current – 80mV Drop-out at 20mA IOUT – External RSET (SC70 only) or Internal Current Programming 35 μA Operating Quiescent Current Short-Circuit, Under-Voltage, and Thermal Protections Wide Input Range: 2.7 to 5.5V 4-Bump WLCSP, 0.4mm pitch or 5-Lead SC70 (EIAJ SC88) Applications Cell Phone Pocket PCs and Digital Cameras Bluetooth ® Headsets PMP and MP3 players Description The FAN5646 is a flexible and compact solution for a blinking or “breathing” LED indicator. The internal programmable blink algorithm eliminates any need for continual system processor control. This means longer battery life for a hand-held system because the system processor is not awakened from sleep mode to blink an LED. Very low dropout of 80mV allows driving an LED without any inductors or switch capacitors. LED blink rate, rise and fall time, and CTRL line behavior can be programmed by a TinyWire™ single-wire digital interface. The on-time and time between pulses can be set for up to two different pulse widths. The default for FAN5646 option 01 is “follow” mode, where the LED turns on with the programmed rise time, then stays on as long as CTRL remains HIGH. When CTRL falls, the LED turns off at the programmed fall time. For option 00; when CTRL is HIGH continuously, the LED repeats the programmed pattern. The FAN5646 is available in a four-pin wafer-level chip-scale package with 0.4mm pitch or a five-lead SC70 package. Figure 1. Typical Application Ordering Information Part Number Option Follow Bit Default Temperature Range Eco Status Package Packing FAN5646UC00X 00 0 -40 to 85°C Green WLCSP-4, 0.4mm Pitch Tape and Reel FAN5646S700X 00 0 -40 to 85°C Green 5-Lead SC70, EIAJ SC88 Tape and Reel FAN5646UC01X 01 1 -40 to 85°C Green WLCSP-4, 0.4mm Pitch Tape and Reel FAN5646S701X 01 1 -40 to 85°C Green 5-Lead SC70, EIAJ SC88 Tape and Reel For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html. Bluetooth® is a registered trademark of Bluetooth SIG, Inc. Important: Contact a Fairchild Semiconductor sales representative for additional performance information and specifications. |
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