EV3398E-F-00A

EV3398E-F-00A is a 4 strings WLED controller with 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. 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.

• 4-string, max 400mA/string WLED driver
• 80V ABS rating for 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