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reference designMP3398AGS

Monolithic Power Systems MP3398AGS

4 strings 350mA White LED Driver Evaluation Board

Overview

TopologyBoost Converter
Input voltage8-28 V
Output 10.12 A
IC revision1.0

Description

The EV3398A-S-00A is an evaluation board for the MP3398A, a step-up converter designed for liquid-crystal displays that employ an array ofLEDs as the light source. It can drive up to 4 strings LEDs in parallel with 350mA/string maximum current.

The MP3398A uses current mode, fixed switching frequency architecture. The frequency is programmable by an external frequency setting resistor. MP3398A drives an external MOSFET to boost up the output voltage from a5V to 28V input supply. It regulates the current in each LED string to the programmed value set by an external current setting resistor.

The MP3398A can support both analog and PWM dimming independently to meet the special dimming mode request. In addition, rich protection modes are also integrated including OCP, OTP, UVP, OVP, LED short/openprotection, inductor/diode short protection.

The MP3398A is available in SOIC16, TSSOP16 and SOIC20 packages.

Features

  • 4-String, Max 350mA/String at 10% DPWM
  • 5V to 28V Input Voltage Range
  • 2.5% Current Matching Accuracy Between Strings
  • Programmable Switching Frequency
  • PWM and Analog Dimming Mode
  • Cascading Capability with a Single Power Source
  • LED Open and Short LED Protection
  • Programmable Over-Voltage Protection
  • Recoverable thermal Shutdown Protection
  • Over Current Protection
  • Inductor/Diode short Protection
  • Under-Voltage Lockout
  • SOIC16, TSSOP16 and SOIC20 Packages

Typical applications

  • Flat Panel Video Displays
  • 2D/3D LCD TVs and Monitors
  • Desktop LCD Flat Panel Displays

More information

Parts approved by Monolithic Power Systems

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L(µH)
IRP,40K(A)
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744770133
SPECWE-PD SMT Power Inductor, 33 µH, 4.7 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance33 µH
Performance Rated Current4.7 A
DC Resistance53 mΩ
Self Resonant Frequency8.5 MHz
Size1280 
VersionStandard 
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