MP3399EF datasheet(4/19 Pages) MPS

Part #	MP3399EF

Description	12-String, Cascading White LED Driver For Extending LED Channels

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Manufacturer	MPS [Monolithic Power Systems]

Direct Link	http://www.monolithicpower.com

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MP3399-12-STRING, CASCADING WHITE LED DRIVER WITH STEP-UP CONTROLLER

MP3399 Rev. 1.0

www.MonolithicPower.com

4

3/27/2013

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

ELECTRICAL CHARACTERISTICS

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

Parameters

Symbol

Condition

Min

Typ

Max

Units

Operating Input Voltage

VIN

4.5

28

V

Supply Current (Quiescent)

IQ

VIN=12V, VEN=5V, no load with

switching

4

mA

Supply Current (Shutdown)

IST

VEN=0V, VIN=12V

2

μA

LDO Output Voltage

VCC

VEN=5V,

7V<VIN<28V,

0<IVCC<10mA

5.5

6

6.5

V

Input UVLO Threshold

VIN_UVLO

Rising Edge

3.4

3.9

4.3

V

Input UVLO Hysteresis

200

mV

EN High Voltage

VEN_HIGH

VEN Rising

1.8

V

EN Low Voltage

VEN_LOW

VEN Falling

0.6

V

STEP-UP CONVERTER

Gate Driver Impedance

(Sourcing)

VCC=6V,VGATE=6V

4

Ω

Gate Driver Impedance

(Sinking)

VCC=6V,IGATE=10mA

2

Ω

GATE Voltage

VGATE

6

V

ROSC= 115kΩ

510

570

630

kHz

Switching Frequency

fSW

ROSC= 374kΩ

150

170

190

kHz

OSC Voltage

VOSC

1.18

1.23

1.28

V

Minimum On Time

TON_MIN

PWM Mode,

when no pulse skipping happens

100

ns

Maximum Duty Cycle

DMAX

90

%

ISENSE Limit

Max Duty Cycle

175

220

265

mV

COMP Source Current Limit

ICOMP SOLI

65

μA

COMP Sink Current Limit

ICOMP SILI

15

μA

PWM DIMMING

DBRT Leakage Current

IDBRT_LK

-5

5

μA

BOSC Frequency

FBOSC

CBOSC=2.2nF

1.2

1.6

2

kHz

BOSC Output Current

IBOSC

6.37

7.5

8.63

uA

LED CURRENT REGULATION

ISET Voltage

VISET

1.20

1.22

1.245

V

LEDX Average Current

ILED

RISET=40kΩ

29.6

30.5

31.4

mA

Current Matching

(5)

ILED=30.5mA

2.5

%

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