MP3398A datasheet(3/20 Pages) MPS

3 / 20 page

STEP UP, 4 STRINGS, MAX. 350MA/STRING ANALOG AND PWM DIMMING, WHITE LED CONTROLLER

MP3398A Rev. 1.04

www.MonolithicPower.com

5/26/2017

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

PACKAGE REFERENCE

TOP VIEW

LED2

LED3

LED1

VCC

VIN

GATE

ISENSE

OVP

OSC

COMP

LED4

PWM

ISET

GND

ADIM

O SC

LED2

COMP

LED3

LED4

Exposed Pad

Connect to GND

LED1

VCC

VIN

ISET

G ND

GATE

I SENSE

OVP

TOP VIEW

PWM

ADIM

SOIC16

TSSOP16-EP

SOIC20

ABSOLUTE MAXIMUM RATINGS

(1)

VIN .............................................. -0.3V to +30V

VGATE........................................... -0.3V to +6.5V

VCC............................................ -0.3V to +6.8V

VLED1 to VLED4 .................................. -1V to +55V

VISENSE......................................... -0.5V to +6.5V

All Other Pins...............................

–0.3V to VCC

Continuous Power Dissipation (TA = 25°C)

(2)

SOIC16....................................................1.56W

TSSOP16-EP

………………………………2.78W

SOIC20

………………………………… 1.74W

Junction Temperature .............................. 150°C

Lead Temperature ................................... 260°C

ESD Capability Human Body Mode (all pins)

.................................................................3.5kV

Recommended Operating Conditions

(3)

Supply Voltage VIN ............................. 5V to 28V

LED Current (Backlight) ...........10mA to 350mA

Operating Junction Temp. (TJ). -40°C to +125°C

Thermal Resistance

(4)

θJA

θJC

SOIC16……………………………80

……35....°C/W

TSSOP16-EP……………………45…….10….°C/W

SOIC20

……………………72 ...... 30...

C/W

Notes:

1) Exceeding these ratings may damage the device. The voltage

is measured with a 20MHz bandwidth limited oscilloscope.

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 will cause excessive die temperature, and the

regulator will 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 JESD51-7, 4-layer PCB.

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