UTC8227
LOW FREQUENCY POWER
AMPLIFIER
DESCRIPTION
LI
NEAR I
NTEGRATED CI
RCUI
T
The UTC8227 is the audio power amplifier with built-in
two channel developed for portable radio cassette tape
recorder with power ON/OFF switch.
FEATURES
*Wide operating supply voltage: Vcc=5~12V
*Low quiescent supply current
(Icc=21mA,typical,at Vcc=9V ,Vi=0)
*Output power
Po=2.50W/CH at Vcc=9V,R
L
=4ohm ,f=1kHz,Thd=10%
*Soft Clip
*Built-in Thermal shut-down protection circuit
*Stand-by Switch
HDIP-12
TEST CIRCUIT
SW1
1000碌F
100碌F
Vcc2
Vcc1
1
12
3
Boot
strap 1
100碌F
1000碌F
Input 1
6
NF1
47碌F
120
Output 1
5
9
45
30k
0.015碌F
2
RL
Ripple
47碌F
7
Input 2
NF2
100碌F
10
11
Boot
strap 2
1000碌F
Output 2
8
47碌F
120
0.015碌F
45
30k
RL
TAB
Pre
GND
4
Power
GND
YOUW ANG ELECTRONI CO.
CS
LTD
1