YD7377 PDF – 2 x 30W, Power Amplifier for CAR Radio

Part Number: YD7377 ( = TDA7377 )

Function: 2 x 30W, POWER AMPLIFIER

Package: MULTIWATT 15 Pin Type

Manufacturer: ST, ETC

Images:YD7377 pdf amplifier

Description

The YD7377 is a new technology class AB car radio amplifier able to work either in DUAL BRIDGE or QUAD SINGLE ENDED configuration. The exclusive fully complementary structure of the output stage and the internally fixed gain guaran-tees the highest possible power performances with extremely reduced component count. The on-board clip detector simplifies gain compression operation. The fault diagnostics makes it possible to detect mistakes during car radio set assembly and wiring in the car.

Features

1. MINIMUM EXTERNAL COMPONENTS COUNT :

(1) NO BOOTSTRAP CAPACITORS

(2) NO BOUCHEROT CELLS

(3) INTERNALLY FIXED GAIN (26dB BTL)

2. ST-BY FUNCTION (CMOS COMPATIBLE)

3. NOAUDIBLEPOPDURINGST-BYOPERATIONS

4. DIAGNOSTICS FACILITY FOR:

(1) CLIPPING

(2) OUT TO GND SHORT

(3) OUT TO VS SHORT

(4) SOFT SHORT AT TURN-ON

(5) THERMAL SHUTDOWN PROXIMITY

Pinouts

YD7377 pinout datasheet

Protections

1. SOFT SHORT AT TURN-ON

2. OVERRATING CHIP TEMPERATURE WITH

3. SOFT THERMAL LIMITER

4. LOAD DUMP VOLTAGE SURGE

5. VERY INDUCTIVE LOADS

6. FORTUITOUS OPEN GND

7. REVERSED BATTERY

Applications

  • Car radio audio amplifiers
  • Automotive infotainment systems
  • Vehicle audio systems
  • Automotive speaker amplifiers
  • Multi-channel car audio systems
  • Automotive radio head units
  • Vehicle entertainment systems

Alternative / Equivalent Products

  • TDA7377
  • TDA7375
  • TDA7384

YD7377 PDF Datasheet

YD7377
YD7377 pdf

Similar features and reference parts ( TDA7377 )

DO3316T-473MLB Datasheet – 47 µH, SMT Power Inductor ( PDF )

Part Number: DO3316T-473MLB

Function: 47 µH, High Temp Power Inductor

Manufacturer: Coilcraft Inc

Images:

DO3316T-473MLB datasheet

Description

DO3316T-473MLB is a high-temperature, shielded ferrite power inductor designed for automotive and high-reliability power applications. It offers low DC resistance (DCR), high current handling capability, and stable inductance under elevated temperature conditions, making it suitable for DC/DC converters and power management circuits.

Features

  • Inductance: 47 µH (±10% tolerance typical)
  • Designed for high-temperature operation (up to 125°C ambient)
  • AEC-Q200 Grade 1 qualified (–40°C to +125°C)
  • Low DC resistance (DCR) for improved efficiency
  • High RMS current handling capability
  • Shielded construction (reduced EMI)
  • Soldered self-leaded design for robust mounting
  • RoHS compliant (Sn-Ag-Cu termination)

Mechanical / Material Characteristics

  • Core material: Ferrite
  • Construction: Molded / shielded power inductor
  • Weight: 0.95 ~ 1.25 g
  • Excellent solderability and mechanical reliability

Electrical Characteristics (Typical)

  • Inductance (L): 47 µH
  • Tolerance: ±10%
  • Low DCR → reduces conduction losses
  • High saturation current (Isat) → prevents inductance drop under load

Design Notes

  • Verify both IRMS (thermal limit) and Isat (magnetic saturation limit)
  • Ferrite core → low core loss at high frequency but saturation-sensitive
  • Place close to switching node to minimize loop area and EMI
  • Consider temperature derating for automotive environments
  • Shielded structure helps reduce radiated EMI in dense layouts

Typical Applications

  • Automotive DC/DC converters
  • Switch-mode power supplies (SMPS)
  • Power management for industrial electronics
  • LED drivers and battery-powered systems
  • Point-of-load (POL) converters

How to Choose This Inductor

  • Select inductance value based on switching frequency and ripple current
  • Ensure IRMS rating exceeds load current
  • Ensure Isat exceeds peak inductor current
  • Evaluate DCR for efficiency-sensitive designs
  • Confirm thermal margin under worst-case ambient conditions

Other data sheets are available within the file:

DO3316T, DO3316T-102MLB, DO3316T-102MLD,

DO3316T-103MLB, DO3316T-103MLD

DO3316T-473MLB Datasheet PDF Download


DO3316T-473MLB pdf