MP4560 – 2A, 2MHz, 55V STEP-DOWN CONVERTER

MP4560 Rev. 1.0

www.MonolithicPower.com

3

11/5/2012

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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

0.780 0.800 0.820

Feedback Voltage

–40°C to +85

°C

0.772

0.829

V

175

250

330

Upper Switch On Resistance

(5)

–40°C to +85

°C

160

400

mΩ

Upper Switch Leakage

1

μA

2.6

3.2

4.5

Current Limit

–40°C to +85

°C

2.2

4.7

A

COMP to Current Sense

Transconductance

5.7

A/V

Error Amp Voltage Gain

400

V/V

Error Amp Transconductance

120

µA/V

Error Amp Min Source current

10

µA

Error Amp Min Sink current

-10

µA

2.7

3.0

3.3

VIN UVLO Threshold

–40°C to +85

°C

2.4

3.6

V

VIN UVLO Hysteresis

0.35

V

Soft-Start Time

(5)

0.5

ms

0.8

1

1.2

Oscillator Frequency

–40°C to +85

°C

0.7

1.3

MHz

Minimum Switch On Time

100

ns

Shutdown Supply Current

12

20

µA

Quiescent Supply Current

140

µA

Thermal Shutdown

Hysteresis = 20

°C

150

°C

Minimum Off Time

100

ns

Minimum On Time

(5)

100

ns

1.4

1.55

1.7

EN Up Threshold

–40°C to +85

°C

1.3

1.8

V

EN Threshold Hysteresis

320

mV

Note:

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