EV3398T-F-00A

EV3398T-F-00A

4-String, 80V Return Voltage WLED Driver Evaluation Board

ALTERNATIVE PART

Datasheet

EV3398T-F-00A continues to be in production for existing customers. Please consider this alternative for new designs:

EV3398E-F-00A

4-String, WLED Controller 80V Return Evaluation Board

Features & Benefits

4-String, Max 400mA/String WLED Driver
4.5V to 33V Input Voltage Range
80V ABS Rating for Each String
2.3% Current Matching Accuracy between Each String
Direct PWM Dimming Mode
Analog Dimming Mode with PWM Input
Cascading Capability with a Single Power Source
LED Open and Short Protection
Programmable Recoverable Over-Voltage Protection (OVP)
202mV Latch-Off Cycle-by-Cycle Current Limit Threshold
Recoverable Thermal Shutdown Protection
Available in TSSOP-16EP and PDIP-16 Packages

… and many more!

Description

The MP3398T is a step-up controller with four current channels, designed to drive WLED arrays for large-size LCD panel backlighting applications. It is able to expand the number of LED channels with two or more ICs in parallel sharing a single power source. The MP3398T uses peak current mode with a fixed switching frequency. The frequency is programmable through an external setting resistor. The MP3398T drives an external MOSFET to boost up the output voltage from a 4.5V to 33V input supply. It regulates the current in each LED string to the value set by an external current-setting resistor.

The device applies four internal current sources for current balance. The current matching can achieve 2% regulation accuracy between strings. Its low-regulation voltage on LED current sources reduces power loss. The MP3398T supports direct PWM dimming.

In addition, it integrates rich protection modes including OCP, OTP, UVP, OVP, LED short/open protection, and inductor/diode short protection.

The MP3398T is available in a TSSOP-16EP package.

Product Evaluated

MP3398A

5V to 28V, 4-Channel, 350mA/ch WLED Boost Controller with Separate PDIM and ADIM Pins

Features & Benefits

4-String, Max 400mA/String WLED Driver
4.5V to 33V Input Voltage Range
80V Abs Rating for Each String
2% Current Matching Accuracy Between Each String
PWM Dimming
Cascading Capability with a Single Power Source
LED Open and Short LED Protection
Programmable Recoverable Over-Voltage Protection
0.2V Latch-Off OCP Protection Threshold
Recoverable Thermal Shutdown Protection
Available in a TSSOP-16EP Package

Active Part Numbers:

EV3398T-F-00A

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EV3398T-F-00A

EV3398E-F-00A

EV3398E-F-00A

4-String, WLED Controller 80V Return Evaluation Board

Features & Benefits

Description

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Product Evaluated

Features & Benefits

Active Part Numbers:

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