MP3363

– SINGLE-STRING, 1.8V MINIMUM VIN, 36 VOUT BOOST LED DRIVER

MP3363 Rev. 1.0

MonolithicPower.com

3

9/28/2021

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PIN FUNCTIONS

Pin #

Name

Description

1

SW

Output switch node. The SW pin is the drain of the internal N-Channel MOSFET. Connect

the inductor and rectifier to SW to complete the boost converter.

2

VIN

Input supply. VIN supplies power to the IC.

3

COMP

Error amplifier (EA) output compensation. Connect the COMP pin to a series RC network

to compensate the regulator control loop.

4

EN/DIM

EN and dimming. Use the EN/DIM pin to enable/disable the device, or to initiate pulse-

width modulation (PWM) dimming or analog dimming. The following conditions determine the

EN/DIM operation:

1. To disable the IC, keep the EN/DIM pin low for 20ms.

2. To make the IC work in PWM dimming mode, apply a PWM signal with frequency below

2kHz.

3. To make the IC work in analog dimming mode, apply a PWM signal with frequency above

5kHz.

5

OSC/

SYNC

Switching frequency setting and synchronization. Connect a resistor to the OSC/SYNC

pin to configure the switching frequency (fSW) between 200kHz and 2.2MHz, or apply a pulse

signal between 200kHz and 2.2MHz to synchronize fSW.

6

FB

Regulation feedback input. The regulation threshold is 0.2V.

7

OVP

Output over-voltage protection. The OVP pin senses the output voltage (VOUT) to protect

the IC during open LED operation.

8

GND

Ground.

ABSOLUTE MAXIMUM RATINGS (1)

VIN, VSW ....................................... -0.3V to +40V

All other pins............................... -0.3V to +5.3V

Continuous power dissipation (TA = 25°C) (2)

TSOT23-8................................................1.25W

Junction temperature ............................... 150°C

Lead temperature .................................... 260°C

Storage temperature ................ -65°C to +150°C

ESD Ratings

Human body model (HBM) ................... ±2000V

Charged device model (CDM) .............. ±1000V

Recommended Operating Conditions (3)

Supply voltage (VIN) ........................ 1.8V to 36V

Maximum LED load voltage (VLED) .............. 36V

Operating junction temp (TJ) ... -40°C to +125°C

Thermal Resistance (4)

θJA

θJC

TSOT23-8……….….........…...... 100...... 55....°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 TJ (MAX), the junction-to-

ambient thermal resistance θ

JA, and the ambient temperature

TA. The maximum allowable continuous power dissipation at

any ambient temperature is calculated by PD (MAX) = (TJ

(MAX) - TA) / θJA. Exceeding the maximum allowable power

dissipation can cause an excessive die temperature, and the

regulator may go into thermal shutdown. Internal thermal

shutdown circuitry protects the device from permanent

damage.

3) The device is not guaranteed to function outside of its

operating conditions.

4) Measured on the JESD51-7, a 4-layer PCB.