Datasheet

70 W high efficiency power amplifier
with diagnostic facility
1998 Apr 07 2
Philips Semiconductors Preliminary specification
70 W high efficiency power amplifier
with diagnostic facilityTDA1562Q
FEATURES
· Very high output power, operating from a single low
supply voltage
· Low power dissipation, when used for music signals
· Switches to low output power at too high case
temperatures· Few external components
· Fixed gain
· Differential inputs with high common mode rejection
· Mode select pin (on, mute and standby)
· Status I/O pin (class-H, class-B and fast mute)
· Allswitching levels with hysteresis
· Diagnostic pin with information about:
– Dynamic Distortion Detector (DDD)
– Any short-circuit at outputs
– Open load detector
– Temperature protection.
· Noswitch-on or switch-off plops
· Fast mute on supply voltage drops
· Quick start option (e.g. car-telephony/navigation)
· Low (delta) offset voltage at the outputs
· Load dump protection
·Short-circuit safe to ground, supply voltage and across
the load
· Low power dissipation in any short-circuit condition
· Protected against electrostatic discharge
· Thermally protected
· Flexible leads.GENERAL DESCRIPTION
The TDA1562Q is a monolithic integrated 70 W/4 W
Bridge-Tied Load (BTL) class-H high efficiency power
amplifier in a 17-lead DIL-bent-SIL plastic power
package.
The device canbe used for car audio systems (e.g. car,
radio and boosters) as well as mains fed applications (e.g.
midi/mini audio combinations and TV sound).
QUICK REFERENCE DATA
Test conditions: VP = 14.4 V;RL = 4 W; Rs = 0 W; f = 1 kHz; Tamb = 25 °C; unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
VP supply voltage operating 8 14.4 18 V
non-operating - - 30 V
load dump -- 45 V
Iq(tot) total quiescent current on and mute;
RL = open circuit
- 110 150 mA
Istb standby current standby - 1 50 mA
ïVOOï output offset voltage on and mute - - 100 mV
ïDVOOï delta output...