CV203 Datasheet PDF – Car Radio Audio Amplifer

Part Number: CV203 ( = TDA2003 )

Function: Car Radio Audio Amplifer

Package: TO-220-5 Pin, Pentawatt 5 Pin Type

Manufacturer: Huajing Microelectronics

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CV203 datasheet

Description

The CV203 is Car radio audio amplifier.

The TDA2003 has improved performance with the same pin configuration as the TDA2002. The additional features of TDA 2002, very low number of external components, ease of assembly, space and cost saving, are maintained. The device provides a high output current capability (up to 3.5A) very low harmonic and cross-over distortion. Completely safe operation is guaranteed due to protection against DC and AC short circuit between all pins and ground, thermal over-range, load dump voltage surge up to 40V and fortuitous open ground.

Pinout

CV203 pinout

Pin Configuration (TO-220-5)

  • Pin 1: Non-inverting input (+)
  • Pin 2: Inverting input (−)
  • Pin 3: Ground
  • Pin 4: Output
  • Pin 5: Supply voltage (VS)

Key Features

  • High output current capability: up to 3.5A
  • Low harmonic distortion
  • Low crossover distortion
  • Wide supply voltage range (typically 8V–18V, up to 28V absolute max)
  • Low external component count
  • Same pinout as TDA2002 (drop-in replacement)

Applications

  • Car audio amplifiers
  • Portable speakers
  • TV audio output stages
  • DIY audio amplifier projects
  • Alarm and announcement systems

Alternative Devices

  • TDA2002 (lower power predecessor)
  • TDA2030 (higher power, dual supply capable)
  • LM1875 (hi-fi class alternative)
  • TDA2050 (higher output power)

CV203 Datasheet PDF

3S111 Datasheet PDF – PWM Controller, SOP7

This is a kind of Controller.

Part Number: 3S111

Function: Power PWM Controller IC for LCD Chip

Package: SOP 7 Pin Type

Manufacturer: Sanken, Samsung

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3S111 datasheet SSC3S111
Description

This IC is TV for LCD Power Manage IC. The 3S111 is a PWM controller IC from Sanken, primarily designed for switch-mode power supply (SMPS) applications in LCD TVs. It integrates multiple protection and control functions required for stable and efficient power conversion, typically used in flyback or forward converter topologies.

Key Features

  • PWM control for SMPS applications
  • Designed for LCD TV power management
  • Startup and soft-start control
  • Low external component count

Pinout

3S111 pinout

1. FB/OLP
2. BD
3. NC
4. ST
5. DRV
6. OCP
7. VCC
8. GND

Design Considerations

  • Startup Circuit: Ensure proper VCC charging via startup resistor or auxiliary winding
  • Current Sensing: Accurate sense resistor critical for OCP stability
  • Feedback Loop: Compensation network must ensure loop stability
  • EMI Control: Proper snubber and layout required
  • Thermal: External MOSFET and transformer dominate thermal design

Applications

  • LCD TV power supplies
  • SMPS adapters
  • Set-top box power modules
  • General isolated AC-DC converters

Other data sheets are available within the file: SSC3S111

3S111 Datasheet PDF

3S111 pdf

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