TDA8933BTW/N2,118 NXP Semiconductors, TDA8933BTW/N2,118 Datasheet - Page 14

• Manufacturer Part Number: TDA8933BTW/N2,118
• Description: IC AMP AUDIO CLASS D 32HTSSOP
• Manufacturer: NXP Semiconductors
• Type: Class Dr

Specifications of TDA8933BTW/N2,118

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 20.6W x 1 @ 16 Ohm; 10.3W x 2 @ 8 Ohm
• Voltage - Supply: 10 V ~ 36 V, ±5 V ~ 18 V
• Features: Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection
• Mounting Type: Surface Mount
• Package / Case: 32-TSSOP Exposed Pad, 32-eTSSOP, 32-HTSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935285222118

NXP Semiconductors
UBA2074(A)
Preliminary data sheet
7.9 The fault timer
Both synchronisation methods will also lock all inverters in phase. All the full bridge voltages will
all be exactly in phase, even if the (regulated) phase difference between outputs A and B of each
IC is not the same. In this way, all lamps in a multi inverter system are running at the same
frequency and with equal lamp current phase, as illustrated in
Synchronisation is only enabled in normal mode, when no fault condition excists. The only
exception is when an external detected fault condition is entered via the nonFAULT-pin, then
synchronisation remains active (see
The fault timer provides a delay inbetween the detection of a fault and the shut down of the IC
(enter STOP-state). Its time T
Any fault condition will start the timer. When the timer is activated, the capacitor at the CT-pin will
be alternatingly charged and discharged (see
four bit counter. After one cycle (the fault signalling delay T
(pulled low), to signal to any external circuit that there is a fault detected and the IC will stop if that
fault continues. After 15 cycles is the fault time-out period T
enter STOP-state.
If the fault timer is inactive, the CT-pin voltage is one Vbe (≅0.7V). The CT-timer has a protection
that prevents the IC to start-up if the CT-pin is shorted to GND.
Fig 15. Full bridge voltages of two HF synchronised inverters
Rev. 02.0 — February 2007
High Voltage Full-bridge control IC for CCFL backlighting
fault(timeout)
Figure
is proportional to the capacitor connected to the CT-pin.
17).
Figure
16). These cycles are being counted by a
fault(delay)
fault(timeout)
Figure
UBA2074(A)
) the nonFAULT-pin is activated
15.
reached, and the IC will
© NXP B.V. 2007. All rights reserved.
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