TDA7575B STMicroelectronics, TDA7575B Datasheet - Page 17

• Manufacturer Part Number: TDA7575B
• Description: IC AMP DUAL BRIDGE FLEXIWATT27
• Manufacturer: STMicroelectronics
• Type: Class ABr

Specifications of TDA7575B

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 150W x 1 @ 1 Ohm; 75W x 2 @ 2 Ohm
• Voltage - Supply: 8 V ~ 18 V
• Features: Differential Inputs, I²C, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Through Hole
• Package / Case: 27-Flexiwatt (bent and staggered leads)
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 1-Channel Mono/2-Channel Stereo
• Output Power (typ): 150x1@1Ohm/75x2@2OhmW
• Audio Amplifier Function: Speaker
• Input Offset Voltage: 45@14.4VmV
• Total Harmonic Distortion: 0.02@4Ohm@30W%
• Single Supply Voltage (typ): 9/12/15V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 86W
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 8V
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -55C to 150C
• Operating Temperature Classification: Military
• Mounting: Through Hole
• Pin Count: 27
• Package Type: FLEXIWATT(Vertical)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TDA7575B
5.5
Figure 27. Timing diagram on the I
Figure 28. Timing acknowledge clock pulse
1 Ω capability setting
It is possible to drive 1Ω load paralleling the outputs into a single channel.
In order to implement this feature, outputs are to be connected on the board as follows:
●
●
It is recommended to minimize the impedance on the board between OUT2 and the load in
order to minimize THD distortion. It is also recommended to control the maximum mismatch
impedance between V
pins (pin 24/pin 25 respect to pin 30/pin 31), mismatch that must not exceed a value of
20 mΩ.
With 1 Ω feature settled the active input is IN2 (pin 17 and pin 18), therefore IN1 pins should
be let floating.
It is possible to set the load capability acting on 1 Ω pin as follows:
It is to remember that 1
Ohm function is a hardware selection.
Therefore it is recommended to leave 1Ω pin floating or shorted to GND to set the two
channels mode configuration, or to short 1Ω pin to V
configuration.
OUT1+ (pin 35 and pin 36) shorted to OUT2+ (pin 19 and pin 20)
OUT1- (pin 28 and pin 29) shorted to OUT2- (pin 26 and pin 27).
1 Ω pin (pin 15) < 1.5 V: two channels mode (for a minimum load of 2 Ω)
1 Ω pin (pin 15) > 2.5 V: one channel mode (for 1 Ω load).
SCL
SDA
SDA
SCL
START
START
CC
pins (pin 21/pin 22 respect to pin 33/pin 34) and between PWGND
MSB
1
Doc ID 14103 Rev 2
2
2
C bus
D99AU1033
D99AU1032
3
CC
7
to set the one channel (1Ω)
8
ACKNOWLEDGMENT
FROM RECEIVER
STOP
9
I
2
I2C bus interface
CBUS
17/32