LM49450SQ/NOPB National Semiconductor, LM49450SQ/NOPB Datasheet - Page 8

• Manufacturer Part Number: LM49450SQ/NOPB
• Description: IC AUDIO SUBSYSTEM 2.5W D 32LLP
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class Dr

Specifications of LM49450SQ/NOPB

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2.5W x 2 @ 4 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, DAC, Depop, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 32-LLP
• Amplifier Class: D
• No. Of Channels: 2
• Output Power: 1.2W
• Supply Voltage Range: 2.7V To 5.5V
• Load Impedance: 8ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: LLP
• Rohs Compliant: Yes
• For Use With: LM49450SQEVAL - BOARD EVAL FOR LM49450
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM49450SQ; LM49450SQ; LM49450SQTR

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2
3
4
5
6
7
8
9
10
C
B
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur, including inoperability and degradation of device reliability
and/or performance. Functional operation of the device and/or non-degradation at the Absolute Maximum Ratings or other conditions beyond those indicated in
the Recommended Operating Conditions is not implied. The Recommended Operating Conditions indicate conditions at which the device is functional and the
device should not be operated beyond such conditions. All voltages are measured with respect to the ground pin, unless otherwise specified
Note 2: The Electrical Characteristics tables list guaranteed specifications under the listed Recommended Operating Conditions except as otherwise modified
or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not guaranteed.
Note 3: The maximum power dissipation must be derated at elevated temperatures and is dictated by T
allowable power dissipation is P
Note 4: Human body model, applicable std. JESD22-A114C.
Note 5: Machine model, applicable std. JESD22-A115-A.
Note 6: Typical values represent most likely parametric norms at T
and are not guaranteed.
Note 7: Datasheet min/max specification limits are guaranteed by test or statistical analysis.
Note 8: RL is a resistive load in series with two inductors to simulate an actual speaker load. For R
is 15µH + 4Ω + 15µH.
Symbol
Clock Low Time
Clock High Time
Setup Time for a Repeated
START Condition
Data Hold Time
Data Setup Time
Rise Time of SDA and SCL
Fall Time of SDA and SCL
Setup Time for STOP Condition
Bus Free time Between a STOP
and START Condition
Bus Capacitance
DMAX
Parameter
= (T
JMAX
– T
A
) / θ
JA
or the number given in Absolute Maximum Ratings, whichever is lower.
Output
Input
A
= +25ºC, and at the Recommended Operation Conditions at the time of product characterization
Conditions
8
L
= 8Ω, the load is 15µH + 8Ω, +15µH. For RL = 4Ω, the load
JMAX
, θ
JA
, and the ambient temperature, T
(Note 6)
Typical
LM49450
20+0.1C
15+0.1C
(Note 7)
Limit
600
600
300
900
100
300
300
600
200
1.3
1.3
10
0
B
B
A
. The maximum
μs (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (max)
ns (min)
ns (min)
ns (max)
ns (min)
ns (max)
ns (min)
μs ( min)
pF (min)
pF (max)
(Limits)
Units