MP3362

Single-String, 3V Minimum VIN, 36V VOUT,

Boost LED Driver

MP3362 Rev. 1.1

www.MonolithicPower.com

1

2/22/2023

MPS Proprietary Information. Patent Protected Unauthorized Photocopy and Duplication Prohibited.

© 2023 MPS. All Rights Reserved.

DESCRIPTION

The MP3362 is a fixed-frequency converter ideal

for

low-current

and

high-current

boost

applications. The low 0.2V feedback voltage

offers higher efficiency in white LED driver

applications.

The MP3362 regulates the output voltage up to

36V with efficiency as high as 95%. Current

mode regulation and external compensation

components allow the MP3362 control loop to be

optimized across a wide variety of input voltages.

The MP3362 supports analog dimming and

PWM dimming on the same pin. A <2kHz input

dimming frequency initiates PWM dimming,

while an >5kHz input initiates analog dimming.

Soft start, cycle-by-cycle current limiting, and

input

under-voltage

lockout

prevent

overstressing or damaging sensitive external

circuitry during start-up or potential overload

current conditions.

The MP3362 is available in a TSOT23-8

package.

FEATURES

• 3V to 36V Input Voltage Range

• 4A Peak Current Limit

• 0.3μA Shutdown Current

• Low 200mV Feedback Voltage

• Configurable 200kHz to 2.2MHz f

SW

• Internal 80mΩ, 40V Power Switch

• High Efficiency

• Analog and PWM Dimming

• Under-Voltage Lockout Protection

• Open/Short LED Protection

• Short FB Protection

• Soft-Start Operation

• Thermal Shutdown

• Available in a TSOT23-8 Package

APPLICATIONS

• Medium-Sized LCD Backlighting

• General Lighting

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality

Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

trademarks of Monolithic Power Systems, Inc. or its subsidiaries.

TYPICAL APPLICATION

SW

EN/DIM

1

COMP

3

4

5

OSC/

SYNC

GND

6

FB

7

8

OVP

+

+

VIN

RFB

ROVP1

ROVP2

CCOMP

COUT

CIN

L1

D1

VIN

2

ROSC

Efficiency

fSW = 1MHz, 10 LEDs, ILED = 200mA,

L = 4.7

μH/9.5mΩ

0.6

0.7

0.8

0.9

1

0

5

10

15

20

25

30

VIN (V)