MP4688 – 80V INPUT, 1A HIGH POWER LED DRIVER

MP4688 Rev. 1.12

www.MonolithicPower.com

3

3/28/2012

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© 2012 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Specifications over temperature are guaranteed by design and characterization.

Parameter

Symbol Condition

Min

Typ

Max

Units

VIN UVLO Threshold

3.6

4.0

4.4

V

VIN UVLO Hysteresis

0.4

V

Shutdown Supply Current

2

5

µA

Quiescent Supply Current

170

220

µA

Upper Switch On Resistance

(5)

360

mΩ

Upper Switch Leakage Current

0.01

1

µA

Current Limit

2.5

3.2

A

EN Up Threshold

1.4

1.55

1.7

V

EN Threshold Hysteresis

320

mV

EN Input Current

0.01

1

µA

EN Sinking Current

2

3

µA

DIM Up Threshold

0.8

1.15

1.5

V

DIM Threshold Hysteresis

300

mV

DIM Input Current

-1

1

µA

DIM On Propagation Delay

50

ns

DIM Off Propagation Delay

50

ns

Feedback Voltage Threshold High

(5)

210

215

220

mV

Feedback Voltage Threshold Low

(5)

180

185

190

mV

FB Pin Input Current

-300

300

nA

FB Propagation Delay to Output

High

edge

100

ns

FB Propagation Delay to Output

High

to

100

ns

Thermal Shutdown

Hysteresis = 20

°C

150

°C

Note:

5) Guaranteed by design.