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LM4838 bảng dữ liệu(PDF) 5 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  Stereo 2W Audio Power Amplifiers with DC Volume Control and Selectable Gain
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LM4838 bảng dữ liệu(HTML) 5 Page - Texas Instruments

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LM4838
www.ti.com
SNAS131F – JANUARY 2001 – REVISED MARCH 2013
Absolute Maximum Ratings
(1) (2)
Supply Voltage
6.0V
Storage Temperature
-65°C to +150°C
Input Voltage
−0.3V to VDD +0.3V
Power Dissipation(3)
Internally limited
ESD Susceptibility(4)
2000V
ESD Susceptibility(5)
200V
Junction Temperature
150°C
Soldering Information
Small Outline Package
Vapor Phase (60 sec.)
215°C
Infrared (15 sec.)
220°C
θJC (typ)—NJB0028A
3°C/W
θJA (typ)—NJB0028A
42°C/W
θJC (typ)—PW0028A
20°C/W
θJA (typ)—PW0028A
80°C/W
θJC (typ)—PWP0028A
2°C/W
θJA (typ)—PWP0028A (exposed DAP)
(6)
41°C/W
θJA (typ)—PWP0028A (exposed DAP)
(7)
54°C/W
θJA (typ)—PWP0028A (exposed DAP)
(8)
59°C/W
θJA (typ)—PWP0028A (exposed DAP)
(9)
93°C/W
θJA (typ)—IYZR0036AAA
100°C/W
θJC (typ)—IYZR0036AAA
(10)
65°C/W
θJA (typ)—NYC0049A
100°C/W
θJC (typ)—NYC0049A
(11)
54°C/W
(1)
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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(2)
If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
(3)
The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θ JA, and the ambient temperature
TA. The maximum allowable power dissipation is PDMAX = (TJMAX − TA )/θJA. For the LM4838, TJMAX = 150°C, and the typical junction-to-
ambient thermal resistance for each package can be found in the Absolute Maximum Ratings section above.
(4)
Human body model, 100pF discharged through a 1.5k
Ω resistor.
(5)
Machine Model, 220pF – 240pF discharged through all pins.
(6)
The
θJA given is for an PWP0028A package whose exposed-DAP is soldered to a 2in
2 piece of 1 ounce printed circuit board copper on
a bottom side layer through 21 8mil vias.
(7)
The
θJA given is for an PWP0028A package whose exposed-DAP is soldered to an exposed 2in
2 piece of 1 ounce printed circuit board
copper.
(8)
The
θJA given is for an PWP0028A package whose exposed-DAP is soldered to an exposed 1in
2 piece of 1 ounce printed circuit board
copper.
(9)
The
θJA given is for an PWP0028A package whose exposed-DAP is not soldered to any copper.
(10) All bumps have the same thermal resistance and contribute equally when used to lower thermal resistance. The LM4838YZR demo
board (views featured in the Application Information section) is a four layer board with two inner layers. The second inner layer is a VDD
plane with the bottom outside layer a GND plane. The planes measure 1,900mils x 1,750mils (48.26mm x 44.45mm) and aid in
spreading heat due to power dissipation within the IC.
(11) All bumps have the same thermal resistance and contribute equally when used to lower thermal resistance. The LM4838NYC Demo
Board is a four layer PC Board with 2 inner layers. The second inner layer and bottom outside layers are both grounded. The planes
measure 3200 x 3700 mills and aid in spreading heat due to power dissipation within the IC.
Operating Ratings
Temperature Range
TMIN ≤ TA ≤TMAX
−40°C ≤TA ≤ 85°C
Supply Voltage
2.7V
≤ VDD ≤ 5.5V
Copyright © 2001–2013, Texas Instruments Incorporated
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