STA518:40 V, 3.5 A quad power half-bridge digital audio amplifier

The STA518 is a monolithic quad half-bridge stage in multipower BCD technology. The device can be used also as dual bridge or reconfigured, by connecting the CONFIG pin to the Vddpin, as a single bridge with double current capacity.

The device is particularly designed to make the output stage of a stereo all-digital high-efficiency (DDX™) amplifier capable of delivering an output power of 24 W x 4 channels @ THD = 10% at VCC30 V into a 4 Ω load in single-ended configuration.

It can also deliver 50 + 50 W @ THD = 10% at VCC29 V as output power into an 8 Ω load in BTL configuration and 70 W @ THD = 10% at VCC34 V into 8 Ω in a single paralleled BTL configuration.

The input pins have a threshold proportional to the VLpin voltage.

Key Features

  • Multipower BCD technology
  • Minimum input output pulse width distortion
  • 200 mΩ RdsON complementary DMOS output stage
  • CMOS-compatible logic inputs
  • Thermal protection
  • Thermal warning output
  • Undervoltage protection
  • Short-circuit protection
Product Specifications
DescriptionVersionSize
DS3981: 40 V, 3.5 A quad power half bridge6.0600 KB
Application Notes
DescriptionVersionSize
AN3340: Loudspeaker characterization and compensation1.33 MB
Sample & Buy
Part NumberPackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STA51813TRPowerSSO 36Tape And Reel-40902.4851000NECEAR99MALAYSIA
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STA51813TRPowerSSO 36IndustrialEcopack2md_kb-wspc-powersso36-wspc-slug-wspc-up_u126.pdf
40 V, 3.5 A quad power half bridge STA518
circuit_diagram_10708_thumbnail.png STA518
Loudspeaker characterization and compensation APWORKBENCH
md_kb-wspc-powersso36-wspc-slug-wspc-up_u126.pdf STA518