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MP3398E Datasheet Preview

MP3398E Datasheet

WLED Controller

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MP3398E
4-String, Max 400mA/String, 80V Return,
Step-Up, WLED Controller
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
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
APPLICATIONS
Desktop LCD Flat Panel Displays
All-in-One PCs
2D/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”
and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
MP3398E Rev. 1.02
www.MonolithicPower.com
1
7/31/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.




MPS

MP3398E Datasheet Preview

MP3398E Datasheet

WLED Controller

No Preview Available !

MP3398E 4-STRING, 80V, STEP-UP, WLED CONTROLLER
TYPICAL APPLICATION
4.5V-33V
VIN
C1
GND
L1
D1
C2
13 VIN
C3
12 VCC
GATE 11
10
ISENSE
15 COMP
GND 3
R4
C4 R3
8
7
OSC
OVP
9
MP3398E
1
EN
LED1
16
PWM
14
ADIM
2
LED2
4
LED3
5
LED4
6
ISET
R5
M1
R6
R1
R2
VOUT
MP3398E Rev. 1.02
www.MonolithicPower.com
2
7/31/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.


Part Number MP3398E
Description WLED Controller
Maker MPS
PDF Download

MP3398E Datasheet PDF






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