LM391 National Semiconductor Corporation, LM391 Datasheet - Page 3

• Manufacturer Part Number: LM391
• Description: Audio Power Driver (discontinued)
• Manufacturer: National Semiconductor Corporation

Typical Performance Characteristics
Pin Descriptions
Pin No
10
11
12
13
14
15
16
Output Power vs Supply Voltage
Open Loop Gain vs Frequency
1
2
3
4
5
6
7
8
9
b
Compensation
Ripple Filter
Sink Output
BIAS
BIAS
Source Output
Output Sense
b
b
Shutdown
V
V
a
a
a
a
b
Input
Input
Current Limit
SOA Diode
SOA Diode
Current Limit
Pin Name
Total Harmonic Distortion vs
Frequency (R
Input Referred Power Supply
Rejection vs Frequency
Audio input
Feedback input
Sets the dominant pole
Improves negative supply rejection
Drives output devices and is emitter of AB bias V
Base of V
Collector of V
Drives output devices
Biases the IC and is used in protection circuits
Base of positive side protection circuit transistor
Diode used for dual slope SOA protection
Diode used for dual slope SOA protection
Base of negative side protection circuit transistor
Shuts off amplifier when current is pulled out of pin
Positive supply
Negative supply
3
L
e
8 )
BE
multiplier
BE
multiplier
Comments
Total Harmonic Distortion vs
Frequency (R
Total Harmonic Distortion vs
AB Bias Current
L
BE
e
4 )
multiplier
TL H 7146– 4