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MP3312 Datasheet Preview

MP3312 Datasheet

Dual-Channel White LED Driver

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MP3312
2.7V-5.5V Input , 38V OVP,
Dual-Channel White LED Driver
DESCRIPTION
The MP3312 is a dual-channel step-up WLED
driver with integrated 40V MOSFET, and
supports 2.7V to 5.5V power supply input. It uses
peak current mode to regulate the LED current
which is set by external resistor.
The MP3312 employs 1.2MHz fixed switching
frequency. It features supporting both PWM input
analog dimming and digital analog dimming to
accurately regulate the dimming current.
The MP3312 integrates current source to
balance LED current, which leads good ILED
matching and accuracy performance.
In addition, the MP3312 has LED open and short
protection, cycle by cycle current limit protection,
and thermal shutdown protection. It is available in
tiny WLCSP1.35x1.35-9 package.
FEATURES
2.7V~5.5V Input Voltage
1.2MHz Switching Frequency
Dual Channels Support up to 30mA/String
1% Current Matching Between LED Channels
+/-2% Current Accuracy
38V OVP Protection
PWM Input Analog Dimming Mode
5kHz to100kHz PWM Input Analog Dimming
1-Wire Interface for Digital Dimming
9-bit Dimming Resolution
Internal Soft Start to Reduce Inrush Current
Available in WLCSP1.35x1.35-9 Package
APPLICATIONS
Feature Phone and Smart Phones
Tablets
GPS Receivers
<10 inch LCD video displays with one-cell Li-
ion battery
All MPS parts are lead-free, halogen 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.
TYPICAL APPLICATION
VIN
C1
L1
D1
C2
GND
EN/1 Wire
SW
IN
EN MP3312
PWM
R2
C3
PWM
LED1
COMP
LED2
ISET
GND
R1
MP3312 Rev. 1.1
www.MonolithicPower.com
1
12/7/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.




MPS

MP3312 Datasheet Preview

MP3312 Datasheet

Dual-Channel White LED Driver

No Preview Available !

MP3312 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER
ORDERING INFORMATION
Part Number*
Package
Top Marking
MP3312GC
WLCSP1.35x1.35-9
BU
* For Tape & Reel, add suffix Z (e.g. MP3312GCZ);
PACKAGE REFERENCE
1
2
3
A ISET
LED2
LED1
B PWM COMP GND
C EN
VIN
SW
Package Diagram
WLCSP1.35x1.35-9
ABSOLUTE MAXIMUM RATINGS (1)
VIN.................................................. -0.3V to +6V
VSW…………………………………....-1V to +40V
VLED1, VLED2 ………………………...-0.3V to +40V
All Other Pins................................ 0.3V to +6V
Junction Temperature .............................. 150°C
Lead Temperature ................................... 260°C
Continuous Power Dissipation (TA = 25°C) (2)
WLCSP1.35x1.35-9 .................................1.04W
Recommended Operating Conditions (3)
Supply Voltage VIN ......................... 2.7V to 5.5V
Operating Junction Temp......... -40°C to +125°C
Thermal Resistance (4) θJA θJC
WLCSP1.35x1.35-9..……………120..12..°C/W
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-to-
ambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP3312 Rev. 1.1
www.MonolithicPower.com
2
12/7/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.


Part Number MP3312
Description Dual-Channel White LED Driver
Maker MPS
PDF Download

MP3312 Datasheet PDF






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