MP3394—4-STRING, MAX 200mA/STRING WHITE LED DRIVER

MP3394 Rev. 1.07

www.MonolithicPower.com

3

3/21/2013

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

© 2013 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max

Units

Operating Input Voltage

5

28

V

Supply Current (Quiescent)

switching

4

mA

Supply Current (Shutdown)

2

μA

LDO Output Voltage

5.5

6

6.5

V

Input UVLO Threshold

Rising Edge

3.8

4.2

4.6

V

Input UVLO Hysteresis

200

mV

EN High Voltage

1.8

V

EN Low Voltage

0.6

V

STEP-UP CONVERTER

Gate

Driver

Impedance

(Sourcing)

4

Ω

Gate

Driver

Impedance

(Sinking)

2

Ω

480

540

600

kHz

Switching Frequency

145

165

185

kHz

OSC Voltage

1.20

1.23

1.26

V

Minimum On Time

PWM Mode,

when no pulse skipping happens

100

ns

Maximum Duty Cycle

90

%

ISENSE Limit

Max Duty Cycle

150

200

250

mV

COMP Source Current Limit

65

μA

COMP Sink Current Limit

15

μA

PWM DIMMING

DBRT Leakage Current

-5

5

μA

BOSC Frequency

1.0

1.5

2

kHz

BOSC Output Current

6

7.5

9

μA

LED CURRENT REGULATION

ISET Voltage

1.20

1.23

1.25

V

LEDX Average Current

31

32

33

mA

Current Matching

(5)

2.5

%