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MP3312GC-P

P1-P3P4-P6P7-P9P10-P12P13-P15
MP3312
2.7V-5.5V Input , 38V OVP,
Dual-Channel White LED Driver
MP3312 Rev. 1.02 www.MonolithicPower.com 1
1/13/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
The Future of Analog IC Technology
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
A
ll MPS parts are lead-free, halogen free, and adhere to the RoHS directive. Fo
r
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
60
65
70
75
80
85
90
95
2.5 3 3.5 4 4.5 5 5.5 6
MP3312 － 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER
MP3312 Rev. 1.02 www.MonolithicPower.com 2
1/13/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number* Package Top Marking
MP3312GC WLCSP1.35x1.35-9 BU
* For Tape & Reel, add suffix –Z (e.g. MP3312GC–Z);
PACKAGE REFERENCE
Package Diagram
WLCSP1.35x1.35-9
ABSOLUTE MAXIMUM RATINGS
(1)
V
IN
.................................................. -0.3V to +6V
V
SW
…………………………………....-1V to +40V
V
LED1,
V
LED2
………………………...-0.3V to +40V
All Other Pins ................................ –0.3V to +6V
Junction Temperature .............................. 150°C
Lead Temperature ................................... 260°C
Continuous Power Dissipation (T
A
= 25°C)
(2)
WLCSP1.35x1.35-9 ................................. 1.04W
Recommended Operating Conditions
(3)
Supply Voltage V
IN
......................... 2.7V to 5.5V
Operating Junction Temp. ........ -40°C to +125°C
Thermal Resistance
(4)
θ
JA
θ
JC
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 T
J
(MAX), the junction-to-
ambient thermal resistance
JA
, and the ambient temperature
T
A
. The maximum allowable continuous power dissipation a
t
any ambient temperature is calculated by P
D
(MAX) = (T
J
(MAX)-T
A
)/
JA
. Exceeding the maximum allowable powe
r
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanen
t
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MP3312 － 2.7V-5.5V INPUT, 38V OVP, DUAL-CHANNEL WHITE LED DRIVER
MP3312 Rev. 1.02 www.MonolithicPower.com 3
1/13/2015 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
V
IN
=3.7V, V
EN
= V
PWM
= HIGH, Typical Values are at T
A
= 25°C, unless otherwise noted.
Parameters Symbol Condition Min Typ Max Unit
Power Supply
Operating Input Voltage V
IN
2.7 5.5 V
Supply Current (Quiescent) I
Q
V
IN
=3.7V, V
EN
= V
PWM
= High,
no load with switching
1 2 mA
Supply Current (Shutdown) I
ST
V
EN
=0V, V
IN
=3.7V 1 A
Input UVLO Threshold V
IN_UVLO
Rising Edge 2.4 2.6 V
Input UVLO Hysteresis 200 mV
OSCILLATOR
Switching Frequency f
SW
1 1.2 1.4 MHz
Maximum Duty Cycle D
MAX
93 95 %
Minimum On Time
(5)
T
ON_MIN
100 ns
Power Switch
Main Switch On-Resistance
R
DSON_M
VIN=3.7V 0.2
Error Amplifier
Error Amplifier Transconductance gm 370 uS
Max Sink/Source Current
42 A
Current Regulation
VLEDx Regulation Voltage V
REG
ILED1=ILED2=20mA 240 mV
ISET Pin Voltage
V
ISET
1.207 1.232 1.247 V
Current Multiplier K
ISET
1020
Current Accuracy
I
ISET
=20uA,
(|I
MIN
-I
ISET
|/I
ISET
,|I
MAX
-I
ISET
|/
I
ISET
)
-2 2 %
Current Matching
I
ISET
=20uA,
(I
MA
X
–I
MIN
) /I
VG
1 2 %
Current Sink Max Output Current
30 mA
EN & PWM Logic
PWM Input High Threshold V
PWM_HI
V
PWM
Falling 1.2 V
PWM Input Low Threshold V
PWM_LO
V
PWM
Rising 0.4 V
EN High Voltage V
EN_HIGH
V
EN
Rising 1.2 V
EN Low Voltage V
EN_LOW
V
EN
Falling 0.4 V
EN & PWM Pull Down Resistor R
PD
800 k
EN Low Logic
To Shutdown Time
T
SD_EN
EN High to Low 2.5 ms
PWM Low Logic
To Shutdown Time
T
SD_PWM
PWM High to Low 20 ms
Minimum PWM On Time T
PO_MIN
200 ns
P1-P3P4-P6P7-P9P10-P12P13-P15

MP3312GC-P

Mfr. #:
Buy MP3312GC-P
Manufacturer:
Monolithic Power Systems (MPS)
Description:
LED Lighting Drivers 2.7V-5.5Vin, 38Vo, 2-Channel WLEDDriver
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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