MPQ4560

– 2A, 2MHz, 55V, STEP-DOWN CONVERTER

MPQ4560 Rev. 1.1

www.MonolithicPower.com

3

5/24/2016

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ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Condition

Min

Typ

Max

Units

Feedback Voltage

55V

0.780

0.797

0.820

V

−40°C

≤ T

0.772

0.829

−40°C

≤ T

0.766

0.829

Feedback Leakage Current

0.1

1.0

μA

Upper Switch On Resistance

(5)

5V

175

250

330

mΩ

160

400

Upper Switch Leakage

1

μA

Current Limit

Duty Cycle

≤ 60%

2.6

3.2

4.5

A

2.2

4.7

COMP to Current Sense

Transconductance

(5)

5.7

A/V

Error Amp Voltage Gain

(6)

400

V/V

Error Amp Transconductance

120

µA/V

Error Amp Min Source current

10

µA

Error Amp Min Sink current

−10

µA

VIN UVLO Threshold

2.7

3.0

3.3

V

2.4

3.6

VIN UVLO Hysteresis

0.35

V

Soft-Start Time

(5)

0.19

0.5

ms

Oscillator Frequency

95kΩ

0.8

1

1.2

MHz

0.7

1.3

Shutdown Supply Current

12

20

µA

Quiescent Supply Current

140

200

µA

Thermal Shutdown

(5)

Hysteresis = 20°C

150

°C

Minimum Off Time

(5)

100

ns

Minimum On Time

(5)

100

ns

EN Rising Threshold

1.4

1.55

1.7

V

1.3

1.8

EN Threshold Hysteresis

320

mV

Note:

5) Derived from bench characterization. Not tested in production.

6) Guaranteed by design. Not tested in production.