MPQ4460 – INDUSTRIAL GRADE 2.5A, 4MHz, 36V STEP-DOWN CONVERTER

MPQ4460 Rev1.21

www.MonolithicPower.com

3

12/5/2012

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© 2012 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameter

Symbol Condition

Min

Typ

Max

Units

0.776

0.8

0.824

V

Feedback Voltage

0.770

0.830

Feedback Bias Current

0.02

2.0

µA

Upper Switch On Resistance

(5)

150

mΩ

Upper Switch Leakage

1

μA

3.5

Current Limit

Duty Cycle = 50%

2.7

4.5

A

COMP to Current Sense

Transconductance

6.3

A/V

Error Amp Voltage Gain

(5)

200

V/V

Error Amp Transconductance

20

60

100

µA/V

Error Amp Min Source Current

5

µA

Error Amp Min Sink Current

–5

µA

VIN UVLO Threshold

2.55

3.0

3.45

V

VIN UVLO Hysteresis

0.35

V

Soft-Start Time

(5)

0.4

1.5

ms

1.55

2

2.45

MHz

Oscillator Frequency

3.10

4

4.9

MHz

Shutdown Supply Current

12

18

µA

Quiescent Supply Current

120

165

µA

Thermal Shutdown

150

°C

Thermal Shutdown Hysteresis

15

°C

Minimum Off Time

(5)

100

ns

Minimum On Time

(5)

100

ns

EN Rising Threshold

1.2

1.5

1.8

V

EN Threshold Hysteresis

300

mV

Note:

5) Guaranteed by design.