Part Number: MP3398

Function: Step-up, White LED Controller

Package: SOIC 16, TSSOP 16, SOIC 20 Pin type

Manufacturer: MPS

Images:

Description

The MP3398 is a step-up controller with 4 current channels, which is designed to drive WLED arrays for large-size LCD-panel backlighting applications. It is flexible to expand the number of LED channels by two or more ICs in parallel sharing a single inductive power source. The MP3398 uses peak-current mode with fixed switching frequency. The frequency is programmable by an external setting resistor.

The MP3398 drives an external MOSFET to boost up the output voltage from a 5V to 28V input supply. It regulates the current in each LED string to the value set by an external current-setting resistor. The device applies 4 internal current sources for current balance. The current matching can achieve 2.5% regulation accuracy between strings. Its low regulation voltage on LED current sources reduces power loss. The IC can support both analog and PWM dimming independently to meet the different dimming-mode request. In addition, rich protection modes are also integrated including OCP, OTP, UVP, OVP, LED short/open protection, inductor/diode short protection.

Features

1. 4-String, Max 400mA/String WLED Driver

2. 4.5V to 33V Input Voltage Range

3. 80V ABS Rating for Each String

4. 2.3% Current Matching Accuracy between Each String

5. Direct PWM Dimming Mode

6. Analog Dimming Mode with PWM Input

7. Cascading Capability with a Single Power Source

8. LED Open and Short Protection

9. Programmable Recoverable Over-Voltage Protection (OVP)

10. 202mV Latch-Off Cycle-by-Cycle Current Limit Threshold

11. Latch-Off Over-Temperature Protection (OTP)

12. Short Inductor/Diode Protection

Application Circuits:

Applications:

1. Desktop LCD Flat Panel Displays

2. All-in-One PCs

3. 2D/3D LCD TVs

MP3398 PDF Datasheet

Part Number: R2S15903SP

Function: Sound Controller with Surround & AGC

Package: DIP 32 Pin type

Manufacturer: Renesas Technology

Images:

Description

The R2S15903SP is an optimum audio signal processor IC for TV. It has a 5ch input selector, AGC, surround/pseudo stereo, tone control(2band), output gain control and 2ch master volume. It can control all of these functions with I2C bus.

1. Audio Amplifiers: These controllers increase the power of audio signals, making them suitable for driving speakers or headphones. They are commonly used in audio systems, from consumer electronics to professional audio setups.

2. Audio Processors: These controllers alter the characteristics of audio signals, such as equalization, compression, and filtering. They are used to enhance or modify the sound quality in audio playback or recording systems.

3. MIDI Controllers: Musical Instrument Digital Interface (MIDI) controllers are used to generate and transmit digital musical messages that control MIDI-enabled devices like synthesizers, digital audio workstations (DAWs), and electronic instruments.

4. Digital Signal Processors (DSPs): These specialized controllers process audio signals digitally, allowing for advanced audio effects, real-time audio processing, and sound synthesis.

5. Sound Synthesizers: These controllers generate sound electronically, often imitating various musical instruments or producing unique electronic sounds. They’re used in music production, electronic music, and sound design.

Features

• Volume: 0 to –89dB, –∞/ 1dB step. Each channel is independence control.

• 5 input selector + MUTE

• 2 Rec output (0/–2dB)

• Auto gain control (AGC level 4step)

• Tone control Bass: –15dB to +15dB/ 1dB step, Treble: –15dB to +15dB/ 1dB step

• Surround <Low/ High>/ Pseudo stereo

• Mode selector: Bypass/ Tone / Tone & Pseudo Stereo or Surround

• Output gain control: 0dB/ +4.5dB

• I2C-BUS control

Pinout and Blockdiagram:

Application:

1. TV, Mini Stereo, etc.

R2S15903SP PDF Datasheet