TDA7850A

The TDA7850A is a breakthrough MOSFET technology class AB audio power amplifier in Flexiwatt27 package 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 TDA7850A integrates a DC offset detector.

Key Features

High output power capability:
- 4 x 50 W/4 Ω max.
- 4 x 30 W/4 Ω @ 14.4 V, 1 kHz, 10 %
- 4 x 80 W/2 Ω max.
- 4 x 55 W/2 Ω @ 14.4 V, 1 kHz, 10 %
MOSFET output power stage
Excellent 2 Ω driving capability
Hi-fi class distortion
Low output noise
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
On board 0.35 A high side driver
Protections:
- Output short circuit to GND, to V_s, 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

Resources

Technical Documentation

Product Specifications

	Description	Version	Size
	DS5524: 4 x 50 W MOSFET quad bridge power amplifier	5.1	358 KB

Technical Notes & Articles

	Description	Version	Size
	TN1258: An innovative high power IC surface mount package family: PowerSO-20 & PowerSO-36 Power IC packaging from insertion to surface mounting	1.0	1 MB

Publications and Collaterals

Flyers

	Description	Version	Size
	Intelligent analog power amplifiers	1.0	715 KB

Selection Guides

	Description	Version	Size
	Power amplifiers and voltage regulators		750 KB

Tools and Software

Evaluation Tools

Product Evaluation Tools

Part Number	Manufacturer	Description
EVAL-TDA785X	ST	EVAL-TDA785x evaluation board for STPA001, STPA003, STPA008, TDA7851A, TDA7850A, and TDA7388A

Sample & Buy

Part Number	Marketing Status	Quantity	Unit Price (US$) *	Package	Packing Type	ECCN (US)	Country of Origin	More info	Order from ST	Order from Distributors
TDA7850A	Active : Product is in volume production	1000	4.901	FLEXIWATT FM2 27	Tube	EAR99	CHINA	MORE INFO	Buy Direct Add to cart	No availability reported, please contact our Sales office
TDA7850AH	Active : Product is in volume production	1000	4.9	FLEXIWATT 27 HB	Tube	EAR99	CHINA	MORE INFO	Buy Direct Add to cart	No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors

Quality & Reliability

Part Number	Marketing Status	Package	Grade	RoHS Compliance Grade	Material Declaration**
TDA7850A	Active	FLEXIWATT FM2 27	Automotive	Ecopack2
TDA7850AH	Active	FLEXIWATT 27 HB	Automotive	Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.