LM4923LQBD National Semiconductor, LM4923LQBD Datasheet - Page 4

• Manufacturer Part Number: LM4923LQBD
• Description: BOARD EVALUATION LM4923LQ
• Manufacturer: National Semiconductor
• Series: Boomer®r

Specifications of LM4923LQBD

• Amplifier Type: Class AB
• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.1W x 1 @ 8 Ohm
• Voltage - Supply: 2.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: LM4923
• Lead Free Status / RoHS Status: Not applicable / Not applicable

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V
V
Symbol
SDIH
SDIL
Note 1: All voltages are measured with respect to the ground pin, unless otherwise specified.
Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions
which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters
where no limit is given, however, the typical value is a good indication of device performance.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
derating curve for additional information.
Note 4: Human body model, 100pF discharged through a 1.5kΩ resistor.
Note 5: Machine Model, 220pF – 240pF discharged through all pins.
Note 6: Typicals are measured at 25°C and represent the parametric norm.
Note 7: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
Note 8: 10Ω terminated input.
External Components Description
(Figure 1)
Components
1.
2.
3.
4.
Shutdown Voltage Input High
Shutdown Voltage Input Low
C
C
R
R
S
B
i
f
Inverting input resistance which sets the closed-loop gain in conjunction with R
Feedback resistance which sets the closed-loop gain in conjunction with R
Supply bypass capacitor which provides power supply filtering. Refer to the Power Supply Bypassing section for
information concerning proper placement and selection of the supply bypass capacitor.
Bypass pin capacitor which provides half-supply filtering. Refer to the section, Proper Selection of External
Components, for information concerning proper placement and selection of C
Parameter
DMAX
= (T
JMAX
– T
A
) / θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower. For the LM4923, see power
Conditions
Functional Description
4
JMAX
, θ
JA
(Note 6)
Typical
, and the ambient temperature T
0.8
0.6
i
.
B
LM4923
f
.
.
(Note 7)
Limit
A
. The maximum
(Limits)
Units
V
V