TS421IQT STMicroelectronics

TS419, TS421 Datasheet 360 mW mono amplifier with standby mode Features TS419IST : MiniSO8 Operating from V = 2 V to 5.5 V CC 8 Standby 1 VOUT2 7 GND 2 Bypass Standby mode active high (TS419) or low (TS421) VIN+ 3 6 VCC Output power into 16 : 367 mW 5 V with 10% THD+N max or 295 mW 5 4 5 VIN- VOUT1 V and 110 mW 3.3 V with 1% THD+N max. Low current consumption: 2.5 mA max. TS421IQT : DFN8 High signal-to-noise ratio: 95 dB (A) at 5 V PSRR: 56 dB typ. at 1 kHz, 46 dB at 217 Hz 1 VCC GND 8 2 7 Short-circuit limitation VOUT2 VOUT1 3 6 VIN+ Standby ON/OFF click reduction circuitry 4 Bypass 5 VIN- Available in MiniSO8 and DFN 3x3 Applications 16/32 earpiece or receiver speaker driver Mobile and cordless phones (analog / digital) PDAs & computers Portable appliances Description The TS419/TS421 is a monaural audio power amplifier driving in BTL mode a 16 or 32 earpiece or receiver speaker. The main advantage of this configuration is to get Maturity status link rid of bulky output capacitors. TS3431 Capable of descending to low voltages, it delivers up to 220 mW per channel (into 16 loads) of continuous average power with 0.2% THD+N in the audio bandwidth from a 5 V power supply. An externally controlled standby mode reduces the supply current to 10 nA (typ.). The TS419 / TS421 can be configured by external gain-setting resistors. DS3048 - Rev 5 - May 2019 www.st.com For further information contact your local STMicroelectronics sales office.TS419, TS421 Maximum ratings 1 Maximum ratings Table 1. Absolute maximum ratings Symbol Parameter Value Unit (1) V Supply voltage 6 V CC V -0.3 V to V +0.3 V Input voltage V i CC T Storage temperature -65 to +150 C stg T Maximum junction temperature 150 C j Thermal resistance junction-to-ambient 215 R MiniSO8 C/W thja 70 DFN8 (2) Power dissipation 0.58 P MiniSO8 W d 1.79 DFN8 (3) ESD Human body model (pin to pin): TS419 , TS421 1.5 kV ESD Machine Model - 220 pF - 240 pF (pin to pin) 100 V Latch-up Latch-up Immunity (All pins) 200 mA Lead temperature (soldering, 10 s) 250 C (4) Output short-circuit to V or GND CC continuous 1. All voltage values are measured with respect to the ground pin. 2. Pd has been calculated with Tamb = 25 C, Tj = 150 C. 3. TS419 stands 1.5 KV on all pins except standby pin which stands 1 KV 4. Attention must be paid to continous power dissipation (V x 300 mA). Exposure of the IC to a short circuit for an extended DD time period is dramatically reducing product life expectancy. Table 2. Operating conditions Symbol Parameter Value Unit V Supply voltage 2 to 5.5 V CC R Load resistor 16 L T Operating free air temperature range -40 to +85 C oper Load capacitor 400 R = 16 to 100 C L pF L 100 R > 100 L V GND to V - 1 V ICM Common mode input voltage range CC V Standby voltage input 1.5 V V STB CC V TS421 ACTIVE / TS419 in STANDBY V STB GND V 0.4 STB (1) TS421 in STANDBY / TS419 ACTIVE Thermal resistance junction-to-ambient MiniSO8 190 R C/W thja DFN8 41 (2) DS3048 - Rev 5 page 2/47