TDA8926 Datasheet, PDF (3/32 Pages) NXP Semiconductors – Power stage 2 x 50 W class-D audio amplifier

Philips Semiconductors
Power stage 2 × 50 W class-D audio
amplifier
Preliminary specification
TDA8926
1 FEATURES
• High efficiency (>94%)
• Operating voltage from ±15 to ±30 V
• Very low quiescent current
• High output power
• Short-circuit proof across the load, only in combination
with controller TDA8929T
• Diagnostic output
• Usable as a stereo Single-Ended (SE) amplifier or as a
mono amplifier in Bridge-Tied Load (BTL)
• Electrostatic discharge protection (pin to pin)
• Thermally protected, only in combination with controller
TDA8929T.
2 APPLICATIONS
• Television sets
• Home-sound sets
• Multimedia systems
• All mains fed audio systems
• Car audio (boosters).
3 GENERAL DESCRIPTION
The TDA8926 is the switching power stage of a two-chip
set for a high efficiency class-D audio power amplifier
system. The system is split into two chips:
• TDA8926J: a digital power stage in a DBS17P power
package
• TDA8929T: the analog controller chip in a SO24
package.
With this chip set a compact 2 × 50 W audio amplifier
system can be built, operating with high efficiency and very
low dissipation. No heatsink is required, or depending on
supply voltage and load, a very small one. The system
operates over a wide supply voltage range from
±15 up to ±30 V and consumes a very low quiescent
current.
4 QUICK REFERENCE DATA
SYMBOL
PARAMETER
General; V_P = ±25 V
V_P
I_q(tot)
η
supply voltage
total quiescent current
efficiency
Stereo single-ended configuration
P_o
output power
Mono bridge-tied load configuration
P_o
output power
CONDITIONS
no load connected
P_o = 30 W
R_L = 8 Ω; THD = 10%; V_P = ±25 V
R_L = 4 Ω; THD = 10%; V_P = ±21 V
R_L = 8 Ω; THD = 10%; V_P = ±21 V
MIN. TYP. MAX. UNIT
±15 ±25 ±30 V
−
35 45 mA
−
94 −
%
30 37 −
W
40 50 −
W
80 100 −
W
5 ORDERING INFORMATION
TYPE NUMBER
TDA8926J
NAME
DBS17P
PACKAGE
DESCRIPTION
plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)
VERSION
SOT243-1
2002 Oct 10
3