UTC UTCLM386 Datasheet

UTC LM386 LINEAR INTEGRATED CIRCUIT

LOW VOLTAGE AUDIO POWER
AMPLIFIER

DESCRIPTION

The UTC LM386 is a power amplifier, designed for
use in low voltage consumer applications. The gain is
internally set to 20 keep the external part count low,
but the additional of external resistor and capacitor
between pin 1 and pin 8 will increase the gain to any
value up to 200.

FEATURES

*Minimum external parts
*Wide supply voltage range: 4V~12V
*Voltage gains:20~200
*Ground referenced input
*Low distortion

PIN CONFIGURATIONS

Gain

1

-Input

2

3

UTC LM386

+Input

Gain

8

7

Bypass

6

VCC

SOP-8

DIP-8

4 5

OutputGND

BLOCK DIAGRAM

6

VCC

15k

7

Ω

8

Gain1Gain

Bypass

15k

2

-Input

50k

Ω

Ω

1.35k

150

Ω

Ω

15k

Ω

3

+Input

50k

Ω

5

Output

4 GND

UTC UNISONIC TECHNOLOGIES CO., LTD. 1

QW-R107-007,B

UTC LM386 LINEAR INTEGRATED CIRCUIT

ABSOLUTE MAXIMUM RATINGS(Ta=25°C )

Supply Voltage Vcc 15 V
Power Dissipation DIP-8
SOP-8
Input Voltage Vi -0.4V~+0.4V V
Operating Temperature Topr 0 to 70
Storage Temperature Tstg -40 to 150

ELECTRICAL CHARACTERISTICS( Ta=25°C, all voltage referenced to GND unless otherwise specified)

Quiescent circuit current ICCQ Vi=0 4 8 mA
Output Power Po Vcc=6V,THD=10% 250 325 mW

Voltage Gain GV Pin1 and pin 8 open 26 dB

Bandwidth BW Pin1 and pin 8 open 300 kHz

Total harmonic distortion THD Po=125mW,pin1 and pin 8 open 0.2 %
Input Resistance Ri 50
Input Bias current IBIAS Pin1 and pin 8 open 250 nA

APPLICATION CIRCUIT

PARAMETER SYMBOL VALUE UNIT

Pd 1250

600

mW

°C
°C

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Vcc=9V,THD=10% 500 700 mW

10µF fron pin 1 and pin 8

10µF fron pin 1 and pin 8

46 dB

60 kHz

kΩ

Fig. 2 GV =200dB

Vin

10k

Ω

Vs

2

3

6

UTC

LM386

4

10 µF

1

8

bypass

250 µF

5

7

0.1 µF

10

Ω

Vin

10k

Fig. 1 GV =20dB

Vs

6

2

LM386

3

4

Ω

1

UTC

8

7

0.1 µF
10

250 µF

5

Ω

UTC UNISONIC TECHNOLOGIES CO., LTD. 2

QW-R107-007,B