LM1875T/LF05 National Semiconductor, LM1875T/LF05 Datasheet - Page 2

• Manufacturer Part Number: LM1875T/LF05
• Description: 20W AUDIO POWER AMP
• Manufacturer: National Semiconductor

Specifications of LM1875T/LF05

• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono
• Output Power (typ): 25x1@8OhmW
• Audio Amplifier Function: Speaker
• Input Offset Voltage: 15@±25VmV
• Total Harmonic Distortion: 0.015@8Ohm@20W%
• Single Supply Voltage (typ): 18/24/28V
• Dual Supply Voltage (typ): V
• Supply Current (max): 100@±25VmA
• Power Supply Requirement: Single/Dual
• Unity Gain Bandwidth Product (typ): 5.5MHz
• Rail/rail I/o Type: No
• Power Supply Rejection Ratio: 95dB
• Single Supply Voltage (min): 16V
• Single Supply Voltage (max): 60V
• Dual Supply Voltage (min): ±8V
• Dual Supply Voltage (max): ±30V
• Mounting: Through Hole
• Pin Count: 5 +Tab
• Package Type: TO-220
• Lead Free Status / Rohs Status: Compliant

www.national.com
Supply Current
Output Power (Note 2)
THD (Note 2)
Offset Voltage
Input Bias Current
Input Offset Current
Gain-Bandwidth Product
Open Loop Gain
PSRR
Max Slew Rate
Current Limit
Equivalent Input Noise Voltage
Absolute Maximum Ratings
Electrical Characteristics
V
Note 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 guarantee specific performance limits.
Note 2: Assumes the use of a heat sink having a thermal resistance of 1˚C/W and no insulator with an ambient temperature of 25˚C. Because the output limiting
circuitry has a negative temperature coefficient, the maximum output power delivered to a 4Ω load may be slightly reduced when the tab temperature exceeds 55˚C.
Typical Applications
Supply Voltage
Input Voltage
Storage Temperature
Junction Temperature
CC
=+25V, −V
Parameter
EE
=−25V, T
AMBIENT
=25˚C, R
P
THD=1%
P
P
P
P
f
DC
V
V
20W, 8Ω, 70 kHz BW
V
R
o
OUT
OUT
OUT
OUT
OUT
CC
EE
OUT
−65˚C to + 150˚C
S
=20 kHz
=600Ω, CCIR
, 1 kHz, 1 Vrms
, 1 kHz, 1 Vrms
L
=0W
=20W, f
=20W, f
=20W, R
=20W, R
=8Ω, A
= V
Typical Single Supply Operation
−V
(Note 1)
EE
SUPPLY
Conditions
to V
V
150˚C
o
o
L
L
=20 (26 dB), f
=1 kHz
=20 kHz
60V
=4Ω, f
=4Ω, f
CC
−10V
o
o
=1 kHz
=20 kHz
2
o
Lead Temperature
=1 kHz, unless otherwise specified.
(Soldering, 10 seconds)
θ
θ
JC
JA
Typical
0.015
0.022
±
0.05
0.07
5.5
±
70
25
90
95
83
0.2
0
8
4
3
1
00503003
Tested Limits
±
±
100
0.4
0.6
±
52
52
0.5
3
15
2
µVrms
Units
260˚C
MHz
V/µs
mA
mV
73˚C
µA
µA
dB
dB
dB
W
%
%
%
%
A
3˚C