MP3378 datasheet(4/25 Pages) MPS

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MP3378

– 4-CHANNEL WLED CONTROLLER PLUS BUCK CONVERTER

MP3378 Rev. 1.01

www.MonolithicPower.com

5/26/2017

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

PACKAGE REFERENCE

TOP VIEW

GATE

SYNC

VIN1

PWM

COMP

VCC1

OSC

ISET

LED3

ADIM

LED4

GND1

OVP

LED2

LED1

GND2

AGND

BST

ISENSE

VIN2

AAM

VCC2

LED3

LED4

SYNC

ISET

BST

ADIM

AGND

Exposed Pad

Connect to GND

ISENSE

OSC

GND1

OVP

LED1

LED2

COMP

VCC1

PWM

VIN1

GATE

GND2

VIN2

GND2

AAM

VCC2

SOIC28

TSSOP28EP

ABSOLUTE MAXIMUM RATINGS

(1)

WLED Driver

VIN1 ........................................... -0.3 V to + 28 V

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

VGATE, VCC1, VISENSE .................. -0.3 V to + 6.5 V

All other pins.............................

–0.3 V to VCC1

Buck Converter

VIN2, VSW ..................................... –0.3 V to 28 V

VBST .................................................... VSW + 6 V

All other pins.................................

–0.3 V to 6 V

Continuous power dissipation (TA = 25°C)

(2)

SOIC-28 ......................................................2 W

TSSOP-28 EP ..........................................3.9 W

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

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

Recommended Operating Conditions

(3)

Supply voltage (VIN1, VIN2) ................ 5 V to 24 V

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

Thermal Resistance

(4)

θJA

θJC

SOIC-28…………………..……

62.5……30....°C/W

TSSOP-28 EP……………...…32

…….…6....°C/W

NOTES:

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

is measured with a 20 MHz 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 produces an excessive die temperature, causing

the regulator to 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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