MP2483 – 2.5A, 55V, PROGRAMABLE FREQUENCY WHITE LED DRIVER

MP2483 Rev. 1.0

www.MonolithicPower.com

11

12/25/2013

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Table 2—Suggested Surface Mount Inductors

Manufacturer

Part Number

Inductance(µH)

Max DCR(Ω)

Current

Rating (A)

Dimensions

Toko

DS84LC-

B1015AS-4R7N

4.7

0.038

3.8

8.2*8.1*3.7

Cooper

DR73-4R7-R

4.7

0.0297

3.78

7.35*7.35*3.3

TDK

SLF7055T-

4R7N3R1-3PF

4.7

0.028

3.6

7.1*7.3*5.5

TYPICAL APPLICATION CIRCUITS

VDD OVP

BST

SW

FB

RSET

COMP

VSS

INGND

EN/DIM

OFF ON

L1

4.7

C3

100nF

D1

B360A

C2

2.2

C1

10

VIN

4.5V<VIN<55V

C4

1nF

DC or PWM Input

R1

R2

R3

C5

1nF

R4

Figure 3—Step-Down White LED Driver Application

VDD

OVP

BST

SW

FB

RSET

COMP

VSS

INGND

EN/DIM

OFF ON

L1

4.7

C3

100nF

D1

B360A

C2

2.2

C1

10

VIN

VIN-VSS<55V

C4

1nF

DC or PWM Input

R1

R2

R3

C5

1nF

R4

VSS

Figure 4— Step-up/down White LED Driver Application