FAB3103 Datasheet, PDF (5/13 Pages) Fairchild Semiconductor – 2.3 Watt Class-D Audio Amplifier with Integrated Boost Regulator and Automatic Gain Control

Electrical Characteristics
Unless otherwise noted: AGCT=GND, R_L=8Ω + 33µH, f=1KHz, and audio measurement bandwidth=22Hz to 20KHz
(AES17). Typical values are at V_BATT=3.6V, T_A=25°C, with typical external component values.
Symbol
Parameter
Conditions
en Output Noise
A-Weighted
Unweighted
TSTD
THYS
Thermal Shutdown
Thermal Shutdown
Hysteresis
Junction Temperature
Junction Temperature
VULVO
VHYS
fSW(REG)
ILIMIT(SU)
VBATT Under-Voltage Shutdown
VBATT Under-Voltage Hysteresis
Boost Converter Switching Frequency
Boost Converter Inrush
Current Limit
PVDD Rising from 0V to VBATT
tINRUSH
Boost Converter Inrush
Time
PVDD Rising from 0V to VBATT
Auto Boost Startup
Current Ramp Rate
PVDD Rising from VBATT to 5.6V
IBOOST
Boost Converter Peak
Input Current Limit
Open-Loop Limit
VBSTOUT
VBSTSTD
tHOLD
Boost Converter Output Voltage
Auto Boost Shutdown Threshold Voltage
Auto Boost Shutdown Hold Time
AGCT=Floating
VAGC AGC Trip Point
AGCT=GND
AGCT=VBATT
Output Power with AGC
AGCT=GND,
VIN=0.4Vpk, 1KHz Sine
Wave
VBATT=3.4V
VBATT=3.0V
tA AGC Attack Time
tR AGC Release Time
AGC Step Size
AGC Maximum Attenuation
VIH EN Logic Input High Voltage
VIL EN Logic Input Low Voltage
CIN EN Capacitance
RPD EN Pull-Down Resistance
Min. Typ. Max. Unit
38
51
µVrms
165
°C
25
°C
1.8 2.1 2.3 V
120 300 mV
1.2
MHz
600 mA
1000 µs
15
mA/µs
1100 1600 2100 mA
5.55 5.65 5.75 V
2
Vpk
125
ms
3.190 3.250 3.283
3.480 3.550 3.586 V
3.680 3.750 3.788
0.79
W
0.45
20
µs/dB
1600
ms/dB
0.5
dB
10
dB
1.1
V
0.45 V
10
pF
300
KΩ
© 2011 Fairchild Semiconductor
FAB3103 • Rev. 1.0.2
5
www.fairchildsemi.com