MP3310

– 47V, 1.3A, STEP-UP WHITE LED DRIVER WITH TRUE PWM DIMMING

MP3310 Rev. 1.1

www.MonolithicPower.com

9

8/10/2023

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© 2023 MPS. All Rights Reserved.

TYPICAL APPLICATION CIRCUIT

VIN

4.5V~25V

MP3310

VCC

VIN

SW

3

9

6

EN/DIM

OVP

2

7

1

4

Enable/

Dimming Control

L1

22µH

D1

B160

C1

10µF/50V

C3

1µF/10V

C2

1µF/50V

R1

330k

Ω

R2

10k

Ω

R3

57.6k

Ω

LED

ISET

FSET

10

R4

NC

COMP

GND

5

8

C4

100nF

10 series, 4 paralleled

Figure 2

—Step-up White LED Driver Application for Driving 4 Strings of 10 WLEDs

VIN

4.5V~25V

MP3310

VCC

VIN

SW

3

9

6

EN/DIM

OVP

2

7

1

4

Enable/

Dimming Control

L1

22µH

D1

B160

C1

10µF/50V

C3

1µF/10V

C2

1µF/50V

R1

365k

Ω

R2

10k

Ω

R3

76.8k

Ω

LED

ISET

FSET

10

R4

NC

COMP

GND

5

8

C4

100nF

12 series, 3 paralleled

Figure 3

—Step-up White LED Driver Application for Driving 3 Strings of 12 WLEDs

VIN

4.5V~20V

MP3310

VCC

VIN

SW

3

9

6

EN/DIM

OVP

2

7

1

4

Enable/

Dimming Control

L1

22µH

D1

B0540

C1

10µF/50V

C3

1µF/10V

C2

1µF/50V

R1

249k

Ω

R2

10k

Ω

R3

76.8k

Ω

LED

ISET

FSET

10

R4

NC

COMP

GND

5

8

C4

100nF

7 series, 3 paralleled

Figure 4

—Step-up White LED Driver Application for Driving 3 Strings of 7 WLEDs