MP3373, 8 STRINGS, WLED CONTROLLER WITH EXTERNAL TRANSISTOR

MP3373 Rev. 1.02

www.MonolithicPower.com

5

8/16/2016

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Parameters

Symbol

Condition

Min

Typ

Max

Units

PWM Signal Low Threshold

0.3

V

EN/PWMI Low to Shutdown

Delay Time

20

ms

LED CURRENT REGULATION

FBX

Regulation

Average

Voltage

193

200

207

mV

FBX Regulation Voltage

matching

1.0

1.2

%

Phase Shift

8-string current sink used,

45

°

6-string current sink used

7/8-string disabled.

60

°

Phase Shift Delay Between

Each Two Adjacent String

4-string current sink used

5/6/7/8-string disabled.

90

°

PROTECTION

OVP Over Voltage Threshold

Rising Edge

2.43

2.5

2.57

V

OVP Over Voltage Hysteresis

100

mV

OVP UVLO threshold

Step-up Converter Fails

80

mV

OVP Over Voltage Latch-Off

Threshold

Rising Edge

2.9

3

3.1

V

CTLX UVLO Threshold

170

205

240

mV

FAULT

Flag

Pull

Down

Resistance

20

Ω

Latch Off Current Limit

378

430

472

mV

Thermal Shutdown Threshold

150

℃

Thermal Shutdown Hysteresis

25

CTLX Over Voltage Threshold

5.5

6

6.5

V

Notes:

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