ST 拥有大量汽车系统功放和稳压器产品组合，用于前窗显示单元、外置放大器和信息娱乐解决方案。 各种保护以及牢固、丰富的功能可供汽车厂商开发系统，使用户在汽车环境下体验干净、强劲的音响效果。 客户可以选择模拟或数字输入 B、AB、SB 类 (高效) 和数字 D 器件，带或不带 I2C 接口和诊断功能。 我们提供各种封装以及引脚-引脚兼容 IC，满足不同功率要求并支持一至四个通道。 最新功放与起步-停车控制系统和混合动力车发动机兼容。

STPA001
Description
The STPA001 is a breakthrough MOSFET technology class AB audio power amplifier designed for high power car radio. The fully complementary P-Channel/N-Channel output structure allows a rail to rail output voltage swing which, combined with high output current and minimized saturation losses sets new power references in the car-radio field, with unparalleled distortion performances.
The STPA001 can operate down to 6V and this make the IC compliant to the most recent OEM specifications for low voltage operation (so called 'start-stop' battery profile during engine stop), helping car manufacturers to reduce the overall emissions and thus contributing to environment protection. 

Key Features
Multipower BCD technology
High output power capability:
4 x 50 W/4 Ω Max.
4 x 28 W/4 Ω @ 14.4 V, 1 kHz, 10 %
4 x 72 W/2 Ω Max.
MOSFET output power stage
Excellent 2 Ω driving capability
Hi-Fi class distortion
Low output noise
Very high disturbance immunity
Standby function
Mute function
Automute at min. supply voltage detection
Low external component count:
Internally fixed gain (26 dB)
No external compensation
No bootstrap capacitors
Protections:
Output short circuit to GND, to Vs, across the load
Very inductive loads
Overrating chip temperature with soft thermal limiter
Output DC offset detection
Load dump voltage
Fortuitous open GND
Reversed battery
ESD
Capable to operate down to 6 V (e.g. “Startstop”)

TDA2004R
Description
The TDA2004R is a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications.
Power booster amplifiers can be easily designed using this device that provides a high current capability (up to 3.5 A) and can drive very low impedance loads (down to 1.6 Ω).
The TDA2004R allows very compact applications because few external components are required and it doesn't need electrical insulation between the package and the heatsink.
Key Features
Low distortion
Low noise
Protection against:
Output AC short circuit to ground
Overrating chip temperature
Load dump voltage surge
Fortuitous open ground
Very inductive loads

TDA2005
Description
The TDA2005 is a class B dual audio power amplifier in Multiwatt11 package specifically designed for car radio applications.
Power booster amplifiers can be easily designed using this device that provides a high current capability (up to 3.5 A) and can drive very low impedance loads (down to 1.6 Ω in stereo applications) obtaining an output power of more than 20 W (bridge configuration).
Key Features
High output power:
Po = 10 + 10 W @ RL = 2 Ω, THD = 10 %
Po = 20 W @ RL = 4 Ω , THD = 10 %.
Protection against:
Output DC and AC short circuit to ground
Overrating chip temperature
Load dump voltage surge
Fortuitous open ground
Very inductive loads
Loudspeaker protection during short circuit for one wire to ground

TDA7256
Description
The TDA7256 is a class AB fully protected bridge power amplifier, designed for car radio applications. The high current capability allows to drive low impedance loads (up to 2Ω). The differential inputs availability makes it particularly suitable for boosters and active loudspeakers applications.
Key Features
NO AUDIBLE POP DURING MUTE AND STANDBY OPERATIONS
MUTING TTL COMPATIBLE
VERYLOW STANDBY CONSUMPTION
PROGRAMMABLE TURN ON DELAY
DIFFERENTIAL INPUT
SHORT CIRCUIT PROTECTIONS:
RL SHORT - OUT TO GROUND - OUT TO VS
OTHER PROTECTIONS:
Load dump voltage surge
LoudspeakerDC current
Very inductive load
Overrating temperature
Open ground

TDA7350A
Description
The TDA7350A is a new technology class AB Audio Power Amplifier in the Multiwatt? package designed for car radio applications.
Thanks to the fully complementary PNP/NPN output configuration the high power performance of the TDA7350A is obtained without bootstrap capacitors.
A delayed turn-on mute circuit eliminates audible on/off noise, and a novel short circuit protection system prevents spurious intervention with highly inductive loads.
Key Features
VERY FEW EXTERNAL COMPONENTS
NO BOUCHEROT CELLS
NO BOOSTRAP CAPACITORS
HIGH OUTPUT POWER
NO SWITCH ON/OFF NOISE
VERY LOW STAND-BY CURRENT
FIXED GAIN (30dB STEREO)
PROGRAMMABLE TURN-ON DELAY