Fairchild FAN5646S701X Programmable indicator â softâ led blinker with tinywireâ ¢ single-wire interface Datasheet

FAN5646
Programmable Indicator “Soft” LED Blinker with TinyWire™
Single-Wire Interface
Features
Description

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
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.





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A Operating Quiescent Current
Short-Circuit, Under-Voltage, and Thermal Protections
Wide Input Range: 2.7 to 5.5V
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.
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
Figure 1. Typical Application
Ordering Information
Part Number
Option Follow Bit Default Temperature Range
Package
Packing
FAN5646UC00X
00
0
-40 to 85°C
WLCSP-4, 0.4mm Pitch
Tape and Reel
FAN5646S700X
00
0
-40 to 85°C
5-Lead SC70, EIAJ SC88 Tape and Reel
FAN5646UC01X
01
1
-40 to 85°C
WLCSP-4, 0.4mm Pitch
FAN5646S701X
01
1
-40 to 85°C
5-Lead SC70, EIAJ SC88 Tape and Reel
Tape and Reel
Bluetooth® is a registered trademark of Bluetooth SIG, Inc.
Important: Contact a Fairchild Semiconductor sales representative for additional performance information and specifications.
© 2009 Fairchild Semiconductor Corporation
FAN5646 • Rev. 1.0.2
www.fairchildsemi.com
FAN5646 — Programmable Indicator “Soft” LED Blinker with TinyWire™ Interface
January 2011
0.03 C
2X
F
A
E
B
0.40
Ø0.20
Cu Pad
A1
0.40
D
BALL A1
INDEX AREA
Ø0.30
Solder Mask
0.03 C
2X
TOP VIEW
RECOMMENDED LAND PATTERN
(NSMD PAD TYPE)
0.06 C
0.625
0.547
0.05 C
C
0.378±0.018
0.208±0.021
E
SEATING PLANE
SIDE VIEWS
D
NOTES:
A. NO JEDEC REGISTRATION APPLIES.
0.005
Ø0.260±0.020
4X
0.40
B
A
0.40
(Y)±0.018
1 2
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS AND TOLERANCE
PER ASME Y14.5M, 1994.
D. DATUM C IS DEFINED BY THE SPHERICAL
CROWNS OF THE BALLS.
E. PACKAGE NOMINAL HEIGHT IS 586 MICRONS
±39 MICRONS (547-625 MICRONS).
(X)±0.018
F
BOTTOM VIEW
C A B
F. FOR DIMENSIONS D, E, X, AND Y SEE
PRODUCT DATASHEET.
G. DRAWING FILNAME: MKT-UC004ACrev2.
Figure 15. 4-Bump WLCSP, 0.4mm Pitch
Product-Specific Dimensions
Product
D
FAN5646UC
0.820mm
EXY
0.820mm
0.210mm
0.210mm
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without
notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most
recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which
covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2009 Fairchild Semiconductor Corporation
FAN5646 • Rev. 1.0.2
www.fairchildsemi.com
11
FAN5646 — Programmable Indicator “Soft” LED Blinker with TinyWire™ Interface
Physical Dimensions
FAN5646 — Programmable Indicator “Soft” LED Blinker with TinyWire™ Interface
Physical Dimensions (Continued)
Figure 16. 5-Lead SC70 (EIAJ SC88)
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without
notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most
recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which
covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2009 Fairchild Semiconductor Corporation
FAN5646 • Rev. 1.0.2
www.fairchildsemi.com
12
© 2009 Fairchild Semiconductor Corporation
FAN5646 • Rev. 1.0.2
www.fairchildsemi.com
13
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