EV3398E-U-00A is a 4-string, 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. 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 device 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 analogue dimming with PWM input.
- 4-dtring, max 400mA/string WLED driver
- 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
Footnotes MPS part numbers ending in "-P" and "-Z" are the same parts. P & Z only indicates reel size.
Other details
| Brand |
MONOLITHIC POWER SYSTEMS (MPS) |
| Part Number |
EV3398E-U-00A |
| Quantity |
Each |
| Technical Data Sheet EN |
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