New Products, Tips and Tools for Power and Mobile Applications
Ultra Small Battery and
Load Switching Solutions
Offering designers a small-sized battery or load switching solution, with
excellent thermal characteristics, two new single P-Channel PowerTrench
®
MOSFETs are now available. Fairchild’s FDMA905P and FDME905PT
feature low on-state resistance in a low profile MicroFET
™
package (0.8mm
and 0.55mm max, respectively). The devices offer exceptional thermal
performance for their physical size, and are also well-suited for linear
mode applications.
BENCHMarks
VOL. 2, 2012
™
Advantages
• Saves board space with
MicroFET package
• Low profile package
• Guaranteed low R
DS(ON)
at 4.5V/2.5V/1.8V V
GS
• Excellent thermal performance
Applications
• Handsets
• Ultraportable devices
For more information, please visit:
www.fairchildsemi.com/pf/FD/FDMA905P.html
www.fairchildsemi.com/pf/FD/FDME905PT.html
Product
Number
B
VDSS
(V)
V
GS
(V)
V
GS
(th)
(V) Typ
R
DS(ON)
(mΩ) Typ
4.5V
2.5V
1.8V
Qg Typ
(nC) @
V
GS
=
4.5V
21
I
D
(A)
P
D
(W)
Package
2.0mm x
2.0mm x
0.8mm
1.6mm x
1.6mm x
0.55mm
FDMA905P
12
±8
0.7
14
17
21
10
2.4
FDME905PT
12
±8
0.7
18
22
28
14
8
2.1
SINGLE-STAGE PFC PRIMARY SIDE REGULATION LED DRIVERS
Simplify Design Complexity
in LED Lighting Applications
Implementing dimming capabilities in a conventional TRIAC dimmer
infrastructure is challenging because of compatibility issues. Additionally, small
space requirements remain a consideration in ≤20W LED lighting applications.
To address these obstacles, Fairchild developed the FL7730 single-stage
primary side regulation (PSR) controller with power factor correction (PFC),
TRIAC and analog dimming compatibility, as well as the FL7732 for
non-dimmable applications.
To improve power factor (≥0.9) and THD (Class-C), both devices feature constant
on-time control with an internal error amplifier and low bandwidth compensator.
Precise Constant Current accuracy/control (±5%) regulates accurate output
current, independent of input and output voltage, allowing designers to achieve
high and improved lighting quality.
Advantages
• Excellent PF (≥0.9)
• Low THD (Class-C)
• Power efficiency ≥85%
• Minimizes BOM
for smaller lamp size
• Accurate Constant Current
(CC) control, independent
online voltage, output voltage
and magnetizing inductance
variation
• Linear frequency control
for better efficiency and
simple design
• Open-LED protection
• Short-LED protection
TRIAC DIMMER
BRIDGE DIODE
TRANS
LINE
INPUT
FUSE
Applications
• LED lighting
For more information, please visit:
www.fairchildsemi.com/applications/diagrams/
led-lighting.html
www.fairchildsemi.com/pf/FL/FL7730.html
www.fairchildsemi.com/pf/FL/FL7732.html
LINE
INPUT
4
5
7
3
FL7730
VDD
DIM
COMI
GND
GATE
GND
VS
CS
2
8
6
1
Typical Application Diagram of FL7730 (Dimmable)
BRIDGE DIODE
TRANS
Evaluation Boards
LED lighting application evaluation
boards are available at
FUSE
www.fairchildsemi.com/products/evaluationboards/.
4
5
7
3
FL7732
VDD
DIM
COMI
GND
GATE
GND
VS
CS
2
8
6
1
Latest available board: FEBFL7701_L30U003A:
2.4W LED ballast board with FL7701,
non-isolation, PFC Buck controller.
Typical Application Diagram of FL7732 (Non-Dimmable)
Product
Number
FL7730
FL7732
Topology
PSR PFC Flyback
PSR PFC Flyback
PFC
Yes
Yes
Dimming
Yes
No
CC
Variance
(%)
5
5
Internal
MOSFET
No
No
Package
SOIC-8
SOIC-8
CLASS-D AUDIO AMPLIFIER
Achieve Loud and Clear Sound
While Extending Battery Life
Customer demand is driving the need for louder and clearer speaker
sound in mobile devices. While minimizing impact on battery life,
designers can achieve the performance they require with Fairchild’s
FAB3103. The 2.3W Class-D audio amplifier with integrated boost
regulator and battery automatic gain control (AGC) allows for
high audio output power over a power supply range of 2.5V to 5.2V from a 3.6V
Li-Ion battery.
At low power output, the device’s boost regulator automatically shuts down
for greater efficiency and lower quiescent current consumption, resulting in
longer battery runtime. The FAB3103 audio amplifier also features battery
AGC that reduces gain when the power supply voltage is low in order to limit
maximum power consumption, reducing distortion and preventing early device
software shutdown.
Available in a 12-bump, WLCSP, the FAB3103 device also offers several
protection features including short circuit protection, low voltage shutdown, and
click-and-pop suppression.
BATTERY
C
VBATT
10 F
VBATT
SW
PVDD
C
VREG
22 F
Class-D Amplifier
IN+
IN-
C
INN
1 F
OUT+
OUT-
BATTERY
L
SW
2.2 H
Advantages
• Low EMI design allows
filterless operation
• High noise rejection using
differential audio inputs
• High efficiency boost regulator
provides higher output power
over battery voltages
• Boost shutdown at lower
output power increases
efficiency and reduces
quiescent current
consumption
• AGC monitors battery voltage
and dynamically adjusts gain,
extending battery runtime
Applications
• Mobile handsets
• Smart phones
• Tablets
• Multimedia Internet
devices (MID)
• Portable media players
10
f = 1KHz
VBATT=4.8V
VBATT=4.2V
VBATT=3.6V
VBATT=2.8V
Boost Regulator
EN
C
INP
1 F
1
THD+N (%)
0.1
0.01
0.001
AGCT
0.01
0.1
Output Power (W)
1
10
Typical Application Circuit
For more information, please visit:
www.fairchildsemi.com/pf/FA/FAB3103.html
Supply
Voltage
(V)
Output
Power
at 10%
THD+N
3.6V,
8Ω (W)
2.3
Output
Power
at 1%
THD+N
3.6V,
8Ω (W)
1.85
Total Harmonic Distortion + Noise
vs. Output Power
Product
Number
THD+N
at 0.1W
3.6V,
8Ω (%)
0.01
Features
Integrated
Boost
Converter
Class-G
Package
(mm x mm)
Speaker
Amplifier
Filterless
Class-D
FAB3103
2.5 to
5.2
12-WLCSP,
1.86 x 1.44
AUDIO JACK DETECTION SWITCH
Meet Audio Standards with a Single Device
Designers no longer have to choose supporting one audio jack configuration
standard (OMTP or CTIA) over the other, or rely on a more complex design
with additional components. Fairchild's FSA8049 MIC/GND cross point switch
detects two different audio jack configurations and connects properly to each
standard, enabling the use of all existing headsets in new devices without manual
configuration. This functionality allows the end-user to plug accessories, such as
headsets, with different audio pole configurations into the device and have them
operate correctly. The FSA8049 is available in a space-saving 9-ball WLCSP
1.16mm x 1.16mm package.
Advantages
• Detects two different
audio jack configurations
• Enables use of all existing
headsets in new devices
without manual configuration
• Automatically routes GND
and MIC to audio jack
terminals
• Ability to detect 3- or
4-pole audio accessories
Baseband
Processor
GPIO
V
DD
TO AUDIO PLUG
DETECTION CIRCUIT
AUDIO JACK
Applications
• Mobile handsets
• Smart phones
• Tablets
• Laptops
• PMP/MP3
For more information, please visit:
www.fairchildsemi.com/pf/FS/FSA8049.html
Product
Number
FSA8049
EN
OSCILLATOR &
LOGIC
DETECTION
LSPKR
RSPKR
3POLE
4POLE
Audio
Sub System
MIC Bias
R
MIC
MIC
C
MIC
CEXT
SWITCH ENABLE
TIMING
MIC
5
MIC/GND1
MIC/GND2
t
On/Off
Capacitor
100m
GND
Typical Application Diagram of Mobile Phone Audio Jack with FSA8049
Detection
Audio Plug,
GND & MIC
Polarity
V
DD
(V)
2.5 to
4.4
THD
(MIC)
0.002%
R
ON(GNDA)
80mΩ
ESD
(IEC 61000-4-2)
15kV (Air Gap),
8kV (Contact)
Package
1.16mm x 1.16mm
9 ball WLCSP
MicroDIP BRIDGE RECTIFIER FAMILY
Low Package Height,
Critical for Small Space Designs
Now designers can reduce space and simplify board layout with Fairchild’s new
series of MicroDIP bridge rectifiers. With the ability to increase reliability and
lower overall manufacturing costs, the series provides one of the lowest package
heights for 1A bridge rectifiers. The MDBxS family meets the need for small
space design solutions critical for mobile device battery chargers, power adapters
and Power-over-Ethernet (PoE) devices including IP surveillance cameras. The
family currently consists of three parts—MDB6S (600V), MDB8S (800V) and
MDB10S (1000V), with 50V – 400V versions in development.
Advantages
• Low package profile,
1.45mm (max)
• Requires only 35mm
2
of board space
• High surge current capability:
30A (max)
• Glass passivated junction
rectifiers
• UL certification: E352360
Applications
• Mobile device
battery chargers
• Power adapters
• Power-over-Ethernet
(PoE) devices
•
IP surveillance cameras
For more information, please visit:
www.fairchildsemi.com/pf/MD/MDB6S.html
www.fairchildsemi.com/pf/MD/MDB8S.html
www.fairchildsemi.com/pf/MD/MDB10S.html
Product
Number
MDB6S
MDB8S
MDB10S
MDBxS Family of Low Profile 1A Bridge Rectifiers
R
JA
(°C/W)
250
250
250
V
RRM
(V)
600
800
1000
V
RMS
(V)
420
560
700
I
F(ave)
(A)
1
1
1
I
FSM
(A)
30
30
30
V
FM
(V)
1.1
1.1
1.1
I
RM
(µA)
10
10
10
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