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MP2481DH-LF-Z

P1-P3P4-P6P7-P9P10-P12
MP2481 –36V, 1.2A, 1.4MHz WHITE LED DRIVER
MP2481 Rev. 1.43 www.MonolithicPower.com 10
7/10/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
Selecting the Output Capacitor
The output capacitor keeps the output voltage
ripple small and ensures feedback loop stability.
The output capacitor impedance should be low at
the switching frequency. Ceramic capacitors with
X5R or X7R dielectrics are recommended for
their low ESR characteristics. For most
applications, a 2.2µF ceramic capacitor will be
sufficient.
PC Board Layout Considerations
The high current paths (VSS, VDD and SW)
should be placed very close to the device with
short, direct and wide traces. The input capacitor
needs to be as close as possible to the VDD and
VSS pins. The external feedback resistors should
be placed next to the FB pin. Keep the switch
node traces short and away from the feedback
network.
MP2481 –36V, 1.2A, 1.4MHz WHITE LED DRIVER
MP2481 Rev. 1.43 www.MonolithicPower.com 11
7/10/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
TYPICAL APPLICATION CIRCUITS
MP2481
SW
FB
BST
VSS
VDD OVP
EN/DIM
INGND
C3
10nF
1
5
6
2
4
8
7
3
D1
B140
VIN
6V-36V
OFF
DC or PWM INPUT
ON
39
LED1
10
0.2
1%
Figure 3—Step-Down White LED Driver Application
MP2481
SW
FB
BST
VSS
VDD OVP
EN/DIM
INGND
C3
10nF
1
5
6
2
4
8
7
3
D1
10
1.1
B140
VIN
4.5V-36V
OFF
DC or PWM INPUT
ON
3 series, 9 paralleled
Figure 4—Step-up/down White LED Driver Application
MP2481
SW
FB
BST
VSS
VDD
OVP
EN/DIM
INGND
C3
10nF
1
5
6
2
4
8
7
3
D1
R1
R2
B140
1.1
VIN
4.5V-7.5V
100
10
OFF
DC or PWM INPUT
ON
3 series, 9 paralleled
Figure 5—Optional Step-up White LED Driver Application
MP2481 –36V, 1.2A, 1.4MHz WHITE LED DRIVER
NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third
party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not
assume any legal responsibility for any said applications.
MP2481 Rev. 1.43 www.MonolithicPower.com 12
7/10/2014 MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
PACKAGE INFORMATION
MSOP8E W/ EXPOSED PAD
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS
IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSION OR GATE BURR.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR
PROTRUSION.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) PIN 1 IDENTIFICATION HAS HALF OR FULL CIRCLE OPTION.
6) DRAWING MEETS JEDEC MO-187, VARIATION AA-T.
7) DRAWING IS NOT TO SCALE.
0.030(0.75)
0.037(0.95)
0.043(1.10)MAX
0.000(0.00)
0.006(0.15)
FRONT VIEW
SEATING PLANE
PIN 1 ID
(NOTE 5)
0.114(2.90)
0.122(3.10)
0.187(4.75)
0.199(5.05)
1
4
5
8
0.010(0.25)
0.014(0.35)
0.0256(0.65)BSC
0.114(2.90)
0.122(3.10)
TOP VIEW
0.004(0.10)
0.008(0.20)
SIDE VIEW
GAUGE PLANE
0.010(0.25)
0.016(0.40)
0.026(0.65)
0
o
-6
o
RECOMMENDED LAND PATTERN
0.016(0.40)
0.0256(0.65)BSC
0.100(2.54)
0.181(4.60)0.075(1.90)
0.040(1.00)
Exposed Pad
BOTTOM VIEW
0.087(2.20)
0.099(2.50)
0.062(1.58)
0.074(1.88)
P1-P3P4-P6P7-P9P10-P12

MP2481DH-LF-Z

Mfr. #:
Buy MP2481DH-LF-Z
Manufacturer:
Monolithic Power Systems (MPS)
Description:
LED Lighting Drivers 1.2A 36V 1.4MHz Buck Boost WLED Drvr
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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