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MP3398H PDF预览

MP3398H

更新时间: 2024-11-26 17:02:03
品牌 Logo 应用领域
芯源 - MPS 控制器
页数 文件大小 规格书
18页 752K
描述
4 串、最大 400mA/串、80V 回收端电压、升压白光LED(WLED)控制器

MP3398H 数据手册

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MP3398H  
DESCRIPTION  
FEATURES  
The MP3398H is a step-up controller with four  
LED current channels, designed to drive WLED  
arrays for large LCD panel backlighting  
applications. The MP3398H can expand the  
number of LED channels with two or more ICs  
in parallel sharing a single power source.  
4-String, Max 400mA/String WLED Driver  
4.5V to 33V Input Voltage (VIN) Range  
80V Absolute Maximum Rating for Each  
String  
1.5% Current Matching Accuracy between  
Each String  
Direct Pulse-Width Modulation (PWM)  
Dimming Mode  
Analog Dimming Mode via PWM Input or  
DC Input  
Cascading Capability with a Single Power  
Source  
LED Open and Short Protection  
Configurable, Recoverable Over-Voltage  
Protection (OVP)  
540mV Cycle-by-Cycle Current Limit  
Hiccup Over-Temperature Protection (OTP)  
Short Inductor and Diode Protection  
Available in an SOIC-16 Package  
The MP3398H employs peak current control  
mode with a fixed switching frequency (fSW) that  
is configurable via an external setting resistor.  
The MP3398H drives an external MOSFET to  
boost the output voltage (VOUT) from a 4.5V to  
33V input voltage (VIN) supply. The device also  
regulates the current in each LED string to the  
value set by an external current-setting resistor.  
The MP3398H applies four internal current  
sources for current balancing. It achieves 1.5%  
current matching regulation accuracy between  
the strings. The low regulation voltage on the  
LED current sources reduces power loss.  
The MP3398H supports direct pulse-width  
modulation (PWM) dimming mode with a PWM  
input and analog dimming mode with a PWM  
input or DC input. Full protection features  
include over-current protection (OCP), over-  
temperature protection (OTP), under-voltage  
protection (UVP), over-voltage protection (OVP),  
LED short and open protection, and inductor  
and diode short protection.  
APPLICATIONS  
Desktop LCD Flat-Panel Displays  
All-in-One PCs  
2D and 3D LCD TVs  
All MPS parts are lead-free, halogen-free, and adhere to the RoHS  
directive. For MPS green status, please visit the MPS website under Quality  
Assurance. “MPS,the MPS logo, and “Simple, Easy Solutions” are  
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.  
The MP3398H is available in an SOIC-16  
package.  
MP3398H Rev. 1.0  
9/16/2022  
MonolithicPower.com  
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.  
© 2022 MPS. All Rights Reserved.  
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