TDA8931T NXP Semiconductors, TDA8931T Datasheet - Page 7

• Manufacturer Part Number: TDA8931T
• Description: Comparator ICs 1 CHAN CLASS D AMP 1X15W
• Manufacturer: NXP Semiconductors

Specifications of TDA8931T

• Number Of Channels: 1 Channel
• Product: Digital Comparators
• Response Time: 0.12 us
• Offset Voltage (max): 10 mV
• Input Bias Current (max): 0.06 uA
• Supply Voltage (max): 35 V
• Supply Voltage (min): 12 V
• Maximum Power Dissipation: 2500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOT-163
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TDA8931T/N1,112

Philips Semiconductors
9397 750 13847
Preliminary data sheet
8.6.4 Undervoltage protection (UVP)
8.6.5 Supply voltage drop protection
8.6.6 Overdissipation protection (ODP)
The overvoltage protection level can be determined by the formula:
Where:
Example: The TDA8931 has to shut down at 24 V. When we choose R2 = 10 k
has to be 178 k and V
Remark: When pin OVP is connected to V
When the supply voltage applied to the TDA8931 drops below the minimum supply
voltage threshold level the device is internally set to Standby mode.
When the TDA8931T is switched off with the supply, it will be switched off before it
reaches the voltage on pin HVP. This prevents switch-off pop noise. This function is not
self recovering. The TDA8931T can be recovered by switching to Sleep mode or by
removing the supply voltage.
In case of a short-circuit across the speaker the dissipation is minimized by the ODP.
When the OCP and the OTP are on the same time activated, an over dissipation is
defined. The device is set to Sleep mode and is not self-recovering. When pin
POWERUP = 0 V or the supply voltage is removed, the device is recovered.
Fig 3. Overvoltage protection setting
V
V
R1 = external resistor
R2 = external resistor
V
P OVP
P(OVP)
OVP
= 1.27 V reference voltage.
= overvoltage protection level of supply voltage
=
------------------- -
R1
R2
+
R2
Rev. 01 — 14 January 2004
V
P(OVP)
OVP
becomes 24 V.
V
PA
R1
R2
OVP
SSD
TDA8931
the V
001aac234
P(OVP)fix
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Power comparator 1
level is used.
TDA8931
then R1
7 of 31
20 W
(1)