LM4870M National Semiconductor, LM4870M Datasheet - Page 2

• Manufacturer Part Number: LM4870M
• Description: IC AMP AUDIO PWR 1.1W AB 16SOIC
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4870M

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 1.1W x 1 @ 8 Ohm
• Voltage - Supply: 2 V ~ 5.5 V
• Features: Shutdown, Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *LM4870M

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Symbol
V
I
I
V
P
THD+N
PSRR
V
V
V
V
V
DD
SD
(Notes 1, 2) The following specifications apply for V
DD
OS
O
od
IH
IL
OH
OL
Electrical Characteristics
Note 1: All voltages are measured with respect to the ground pins, 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 func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee 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
+150˚C, and the typical junction-to-ambient thermal resistance, when board mounted, is 100˚C/W.
Note 4: Human body model, 100 pF discharged through a 1.5 k
Note 5: Machine Model, 200 pF–240 pF discharged through all pins.
Note 6: Typicals are measured at 25˚C and represent the parametric norm.
Note 7: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Storage Temperature
Input Voltage
Power Dissipation
ESD Susceptibility (Note 4)
ESD Susceptibility (Note 5)
Junction Temperature
Soldering Information
Small Outline Package
Vapor Phase (60 sec.)
Supply Voltage
Quiescent Power Supply Current
Shutdown Current
Output Offset Voltage
Output Power
Total Harmonic Distortion + Noise
Power Supply Rejection Ratio
Output Dropout Voltage
HP-IN High Input Voltage
HP-IN Low Input Voltage
HP-SENSE High Output Voltage
HP-SENSE Low Output Voltage
Parameter
DMAX
= (T
JMAX
− T
−0.3V to V
A
)/
−65˚C to +150˚C
JA
Internally limited
or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4870, T
(Note 2)
V
V
V
THD+N = 0.5% (max); f = 1 kHz
P
V
V
HP-SENSE = 0V to 4V
HP-SENSE = 4V to 0V
I
I
O
O
DD
O
pin2
IN
O
DD
IN
DD
= 500 µA
= −500 µA
resistor.
= 0V, I
= 1 Wrms; 20 Hz
= 0V
= 0V to 5V
+ 0.3V
3000V
= 4.9V to 5.1V
150˚C
215˚C
= 5V, R
= V
250V
6.0V
DD
O
Conditions
= 0A
L
2
= 8
See AN-450 “Surface Mounting and their Effects on Product
Reliability” for other methods of soldering surface mount de-
vices.
Operating Ratings
Temperature Range
Supply Voltage
T
unless otherwise specified. Limits apply for T
MIN
Infrared (15 sec.)
f
Thermal Resistance
20 kHz
T
A
JMAX
T
MAX
JC
JA
,
JA
(typ)
(typ)
, and the ambient temperature T
(Note 6)
Typical
0.25
7.0
0.4
1.1
0.6
2.5
2.5
2.8
0.2
10
60
LM4870
(Note 7)
Limit
15.0
50.0
2.0
5.5
1.0
1.0
2.5
0.8
−20˚C
2.0V
A
. The maximum
A
T
V
mA (max)
mV (max)
= 25˚C.
A
DD
(Limits)
V (max)
W (min)
V (max)
V (max)
V (min)
V (min)
100˚C/W
Units
35˚C/W
µA
dB
%
V
V
JMAX
220˚C
+85˚C
5.5V
=