MP2488DQ データシートの表示（PDF） - Monolithic Power Systems

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MP2488DQ

200kHz, 55V Input, 2A High Power LED Driver

Monolithic Power Systems 

MP2488 – 2A, 200kHz, 55V HIGH-POWER LEDS DRIVER

ELECTRICAL CHARACTERISTICS

VIN = 12V, VEN = 2.5V, VCOMP = 1.4V, TA= +25C, unless otherwise noted.

Specifications over temperature are guaranteed by design and characterization.

Parameter

Symbol Condition

Min Typ Max Units

Feedback Voltage

Upper Switch On Resistance (5)

Upper Switch Leakage

Current Limit

Error Amp Voltage Gain

Error Amp Transconductance

Error Amp Min Source current

Error Amp Min Sink current

VIN UVLO Threshold

VIN UVLO Hysteresis

Soft-Start Time (5)

Oscillator Frequency

Minimum Switch On Time (5)

Shutdown Supply Current

Quiescent Supply Current

Thermal Shutdown

Minimum Off Time (5)

Minimum On Time (5)

EN Up Threshold

EN Threshold Hysteresis

VFB

RDS(ON)

4.5V < VIN < 55V

VBST – VSW = 5V

VEN = 0V, VSW = 0V

AVEA

GEA

ICOMP = ±3µA

VFB = 175mV

VFB = 225mV

VIN rising

20mV < VFB < 190mV

fs

RFREQ = 495kΩ

VEN < 0.3V

No load, VFB = 240mV

Hysteresis = 20C

188 200 212 mV

220

mΩ

0.1

μA

2.6 3.2

A

400

V/V

350

µA/V

10

µA

-10

µA

2.7 3.0 3.3

V

0.4

V

0.18

ms

150 200 250 kHz

100

ns

12 25 µA

130

µA

150

C

100

ns

100

ns

1.3 1.5 1.7

V

300

mV

Note:

5) Guaranteed by design.

MP2488 Rev. 1.0

www.MonolithicPower.com

3

6/20/2011

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

© 2011 MPS. All Rights Reserved.

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