MP3398E

MP3398E

4.5V to 33V, 4-String, Max 400mA/String, 80V Return, Step-Up, WLED Controller

Datasheet

Description

The MP3398E is a step-up controller with four current channels designed to drive WLED arrays for large LCD panel backlighting applications. The MP3398E is able to expand the number of LED channels with two or more ICs in parallel sharing a single power source. The MP3398E employs peak-current mode with a fixed switching frequency. The frequency is programmable through an external setting resistor. The MP3398E drives an external MOSFET to boost up the output voltage from a 4.5V to 33V input supply and regulates the current in each LED string to the value set by an external current-setting resistor. The MP3398E applies four internal current sources for current balancing. The current matching achieves 2.3% regulation accuracy between strings. The low regulation voltage on the LED current sources reduces power loss. The MP3398E supports direct PWM dimming and analog dimming with PWM input. Full protection features include over-current protection (OCP), over-temperature protection (OTP), under-voltage protection (UVP), over-voltage protection (OVP), LED short/open protection, and inductor/diode short protection. The MP3398E is available in TSSOP-16EP and PDIP-16 packages.

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
Latch-Off Over-Temperature Protection (OTP)
Short Inductor/Diode Protection
Available in TSSOP-16EP and PDIP-16 Packages

Active Part Numbers:

MP3398EGF-P MP3398EGF-Z MP3398EGS-P MP3398EGS-Z MP3398EGP

Meaning of P & Z

Related Products

EV3398E-U-00A 4-String, WLED Controller 80V Return Evaluation Board

The MP3398E is a step-up controller with four current channels designed to drive WLED arrays for large-size LCD panel backlighting applications. The MP3398E is able to expand the number of LED channels with two or more ICs in parallel sharing a single power source. It employs peak current mode with a fixed switching frequency. The frequency is programmable through an external setting resistor. The MP3398E drives an external MOSFET to boost up the output voltage from a 4.5V to 33V input supply, and regulates the current in each LED string to the value set by an external current-setting resistor.

The deviceapplies four internal current sources for current balancing. The current matching achieves 2.3% regulation accuracy between strings. The low-regulation voltage on the LED current sources reduces power loss. The MP3398E supports direct PWM dimming and analog dimming with PWM input.

Full protection features include over-current protection (OCP), over-temperature protection (OTP), under-voltage protection (UVP), over-voltage protection (OVP), LED short/open protection, and inductor/diode short protection.

The MP3398E is available in TSSOP-16EP and PDIP-16 packages.

$100.00
+ tax