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  4. 4.5V to 33V, 4 string, 400mA max / string, 80V return, step up, WLED controller MP3398E (Monolithic Power Systems, Inc.)
4.5V to 33V, 4 string, 400mA max / string, 80V return, step up, WLED controller MP3398E-MP3398E
4.5V to 33V, 4 string, 400mA max / string, 80V return, step up, WLED controller MP3398E-Monolithic Power Systems, Inc.

4.5V to 33V, 4 string, 400mA max / string, 80V return, step up, WLED controller MP3398E
Monolithic Power Systems, Inc.

Monolithic Power Systems, Inc.'s Response Status

Response Rate

100.0%

Response Time

15.6hours

Relatively Fast Response

About This Product

■Summary

The MP3398E is a step-up controller with four current channels designed to drive WLED arrays for large LCD panel backlight applications. The MP3398E can expand the number of LED channels by using two or more ICs in parallel to share a single power supply. The MP3398E uses peak current mode with fixed switching frequency. The frequency is programmable through an external configuration resistor. The MP3398E drives an external MOSFET to boost the output voltage from a 4.5V to 33V input supply and adjusts the current in each LED string to the value set by the external current setting resistor. MP3398E has four internal current sources for current balancing. Current matching achieves 2.3% regulation accuracy between strings. Low regulation voltage of LED current source reduces power loss. MP3398E supports direct PWM dimming and analog dimming via PWM input. Extensive protection features include overcurrent protection (OCP), overtemperature protection (OTP), undervoltage protection (UVP), overvoltage protection (OVP), LED short/open protection, and inductor/diode short protection. MP3398E is offered in TSSOP-16EP and PDIP-16 packages.

■Features and benefits

・4 string, max 400mA/string WLED driver ・Input voltage range from 4.5V to 33V ・ABS rating 80V for each string ・2.3% current matching accuracy between each string ・Direct PWM dimming mode ・Analog dimming mode with PWM input ・Cascading function with a single power supply ・LED open and short circuit protection ・Programmable and recoverable overvoltage protection (OVP) ・202mV latchoff, cycle-by-cycle current limit threshold ・Latch-off overtemperature protection (OTP) ・Short-circuit inductor/diode protection ・Available in TSSOP-16EP and PDIP-16 packages

■Available product numbers

・MP3398EGF-P MP3398EGF-Z MP3398EGS-P MP3398EGS-Z MP3398EGP ・Part numbers ending in P and Z are the same part. P and Z indicate reel size only

  • Product

    4.5V to 33V, 4 string, 400mA max / string, 80V return, step up, WLED controller MP3398E

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1 Models of 4.5V to 33V, 4 string, 400mA max / string, 80V return, step up, WLED controller MP3398E

Image Part Number Price (excluding tax) Channels Dimming (Output) Ichannel (max) (A) Iq (mA) LEDx ABS Voltage (V) Power MOSFET Topology Typical LCD Screen Sizes Fsw (max) (kHz) Fsw (min) (kHz) Grade Package (mm) Input voltage (max) (V) Input voltage (min) (V)
4.5V to 33V, 4 string, 400mA max / string, 80V return, step up, WLED controller MP3398E-Part Number-MP3398E

MP3398E

Available upon quote

4

P-Dim, A-Dim

0.4

3.85

80

External

Boost

Medium (10" to 29") , Large (30" to 45") , Large (>45")

900

100

Catalog

TSSOP-16EP

33

4.5

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About Company Handling This Product

Monolithic Power Systems, Inc.

Response Rate

100.0%

Response Time

15.6hrs

Company Overview

Monolithic Power Systems (MPS), founded in 1997 and headquartered in San Jose, California, is a manufacturer o...

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