MP1584EN datasheet(3/17 Pages) MPS

Part #	MP1584EN

Description	3A, 1.5MHz, 28V Step-Down Converter

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Manufacturer	MPS [Monolithic Power Systems]

Direct Link	http://www.monolithicpower.com

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MP1584 – 3A, 1.5MHz, 28V STEP-DOWN CONVERTER

MP1584 Rev. 1.0

www.MonolithicPower.com

3

8/8/2011

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

ELECTRICAL CHARACTERISTICS

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

Parameter

Symbol Condition

Min

Typ

Max

Units

Feedback Voltage

VFB

4.5V < VIN < 28V

0.776

0.8

0.824

V

Upper Switch On Resistance

RDS(ON)

VBST – VSW = 5V

150

mΩ

Upper Switch Leakage

VEN = 0V, VSW = 0V, VIN = 28V

1

μA

Current Limit

4.0

4.7

A

COMP to Current Sense

Transconductance

GCS

9

A/V

Error Amp Voltage Gain

(5)

200

V/V

Error Amp Transconductance

ICOMP = ±3µA

40

60

80

µA/V

Error Amp Min Source current

VFB = 0.7V

5

µA

Error Amp Min Sink current

VFB = 0.9V

–5

µA

VIN UVLO Threshold

2.7

3.0

3.3

V

VIN UVLO Hysteresis

0.35

V

Soft-Start Time

(5)

0V < VFB < 0.8V

1.5

ms

Oscillator Frequency

RFREQ = 100kΩ

900

kHz

Shutdown Supply Current

VEN = 0V

12

20

µA

Quiescent Supply Current

No load, VFB = 0.9V

100

125

µA

Thermal Shutdown

150

C

Thermal Shutdown Hysteresis

15

C

Minimum Off Time

(5)

100

ns

Minimum On Time

(5)

100

ns

EN Up Threshold

1.35

1.5

1.65

V

EN Hysteresis

300

mV

Note:

5) Guaranteed by design.

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