STA501 STMicroelectronics, STA501 Datasheet - Page 6

• Manufacturer Part Number: STA501
• Description: Audio Amplifiers 40V 3.5A Half Bridge
• Manufacturer: STMicroelectronics

Specifications of STA501

• Product: Class-AB
• Output Power: 50 W
• Operating Supply Voltage: 12 V, 15 V, 18 V
• Supply Current: 50 mA
• Maximum Operating Temperature: + 70 C
• Audio Load Resistance: 8 Ohms
• Input Signal Type: Single
• Minimum Operating Temperature: 0 C
• Output Signal Type: Differential
• Supply Type: Single
• Supply Voltage (max): 36 V
• Supply Voltage (min): 10 V
• Output Type: 1-Channel Mono
• Package / Case: PowerSO-38
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STA501
Figure 1. Test Circuit.
Figure 2.
Figure 3.
6/8
DTin(A)
Duty cycle=A
INA
Duty cycle = 50%
M58
M57
High Current Dead time for Bridge application = ABS(DTout(A)-DTin(A))+ABS(DTOUT(B)-DTin(B))
Duty cycle A and B: Fixed to have DC output current of 3.5A in the direction shown in figure
Low current dead time = MAX(DTr,DTf)
INY
INA
Q1
Q3
OUTA
Iout=3.5A
DTout(A)
M58
M57
L67 22
470nF
C69
gnd
+Vcc
Q1
Q3
OUTA
OUTY
GND
C71 470nF
Rload=8
+V
+V
CC
CC
OUTB
Q2
Q4
OUTY
470nF
L68 22
C70
DTr
R 8
D02AU1450
DTout(B)
Iout=3.5A
DTf
+
-
OUTB
vdc = Vcc/2
V67 =
D02AU1448
Q2
Q4
INB
t
Vcc
(3/4)Vcc
(1/2)Vcc
(1/4)Vcc
M64
M63
D02AU1451
Duty cycle=B
INB
DTin(B)