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What is MP3397?

This electronic component, produced by the manufacturer "MPS", performs the same function as "4-String Max 350mA/String White LED Driver".


MP3397 Datasheet PDF - MPS

Part Number MP3397
Description 4-String Max 350mA/String White LED Driver
Manufacturers MPS 
Logo MPS Logo 


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The Future of Analog IC Technology
DESCRIPTION
The MP3397 is a step-up controller with 4
current channels designed to drive WLED
arrays for large-size LCD-panel backlighting
applications. The MP3397 is flexible, and can
expand the number of LED channels with two
or more MP3397s in parallel operating from a
single inductive power source.
The MP3397 uses current-mode fixed-
frequency architecture. An external resistor sets
the switching frequency. This signal drives an
external MOSFET to boost up the output
voltage from 5V to a 28V input supply. The
MP3397 regulates the current in each LED
string to the programmed value set by an
external current-setting resistor.
The MP3397 applies 4 internal current sources
for current balance. The current matching can
achieve 2.5% regulation accuracy between
strings. Its low regulation voltage on LED
current sources reduces power loss and
improves efficiency.
An external PWM input signal or DC input
signal controls PWM dimming. The dimming
PWM signal can be generated internally and
the dimming frequency is programmed by an
external setting capacitor.
MP3397
Step-Up, 4-String
Max 350mA/String White LED Driver
FEATURES
4-String, Max 350mA/String at 10% DPWM
5V to 28V Input Voltage Range
2.5% Current Matching Accuracy Between
Strings
Programmable Switching Frequency
PWM or DC Input Burst PWM Dimming
Open and Short LED Protection
Programmable Over-Voltage Protection
Cascading Capability with a Single Power
Source
Under-Voltage Lockout
Thermal Shutdown
16-pin TSSOPSOIC Package
APPLICATIONS
Desktop LCD Flat Panel Displays
Flat Panel Video Displays
2D/3D LCD TVs and Monitors
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance. “MPS” and “The
Future of Analog IC Technology” are Registered Trademarks of Monolithic
Power Systems, Inc.
MP3397 Rev. 1.01
www.MonolithicPower.com
9/4/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
1

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MP3397 equivalent
MP3397—4-STRING, MAX 350mA/STRING WHITE LED DRIVER
ELECTRICAL CHARACTERISTICS (continued)
VIN =12V, VEN = 5V, TA = 25°C, unless otherwise noted.
Parameters
Symbol Condition
Min Typ
LEDX Regulation Voltage
VLEDX ILED=180mA
390
PROTECTION
OVP(Over Voltage Protection)
Threshold
OVP UVLO threshold
LEDX UVLO Threshold
LEDX Over Voltage Threshold
Thermal Shutdown Threshold
VOVP_OV
VOVP_UV
VLEDX_UV
VLEDX_OV
TST
Rising Edge
Step-up Converter Fails
1.20 1.23
50 70
156 196
5.8 6.3
150
Notes:
5) Matching is defined as the difference of the maximum to minimum current divided by 2 times average currents.
Max
1.26
90
236
6.8
Units
mV
V
mV
mV
V
°C
MP3397 Rev. 1.01
www.MonolithicPower.com
9/4/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MP3397 electronic component.


Information Total 16 Pages
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