MP3388EY datasheet(4/14 Pages) MPS

Part #	MP3388EY

Description	50V, 8-String White LED Driver

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Manufacturer	MPS [Monolithic Power Systems]

Direct Link	http://www.monolithicpower.com

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4 / 14 page

MP3388- 50V, 8-STRING WHITE LED DRIVERS

MP3388 Rev. 1.0

www.MonolithicPower.com

4

12/16/2011

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

ELECTRICAL CHARACTERISTICS (continued)

VIN =12V, VEN = 5V, TA = +25°C, unless otherwise noted.

Parameters

Symbol

Condition

Min

Typ

Max

Units

LED CURRENT REGULATION

LEDX Average Current

ILED

RISET=60.4kΩ

19.2

19.9

20.6

mA

Current Matching

(5)

ILED=20mA

3

%

Maximum LED Current per String

ILEDmax

RISET=40.2 kΩ

30

mA

LEDX Regulation Voltage

VLEDX

ILED=20mA

600

mV

PROTECTION

OVP Over Voltage Threshold

VOVP_OV

Rising Edge

1.17

1.23

1.3

V

OVP UVLO threshold

VOVP_UV

Step-up Converter Fails

48

70

102

mV

LEDX Over Voltage Threshold

VLEDX_OV

VIN>5.5V

5.1

5.5

5.9

V

LEDX UVLO Threshold

VLEDX_UV

130

175

230

mV

Thermal Shutdown Threshold

TST

150

℃

LEDX Over Voltage Fault Timer

1.3

1.6

1.9

ms

VFAULT Pull Down Current

IFAULT

40

55

70

μA

VFAULT Blocking-Off Voltage

(with Respect to VIN)

VFAULT

VIN =12V, VIN-VFAULT

6

V

Notes:

5) Matching is defined as the difference of the maximum to minimum current divided by 2 times average currents.

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