MP2227 – 24V, 3A, 1.3MHz SYNCHRONOUS STEP-DOWN CONVERTER

MP2227 Rev. 1.1

www.MonolithicPower.com

3

11/21/2011

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Parameters

Condition

Min

Typ

Max

Units

Quiescent Supply Current

1

mA

Shutdown Current

1

μA

Rising Edge

2.7

2.95

V

300

mV

IN Under Voltage Lockout Threshold,

Rising Edge

2.85

2.95

V

IN Under Voltage Lockout Hysteresis

300

mV

0.784

0.800

0.816

V

Regulated FB Voltage

0.780

0.820

V

FB Input Current

-50

50

nA

EN High Threshold

1.6

V

EN Low Threshold

0.4

V

High-Side Switch On-Resistance

160

mΩ

Low-Side Switch On-Resistance

80

mΩ

SW Leakage Current

-1

1

μA

BS Under Voltage Lockout Threshold

1.8

V

High-Side Switch Current Limit

Sourcing

4.5

A

Low-Side Switch Current Limit

Sinking

2.5

A

Oscillator Frequency

1

1.3

1.6

MHz

Maximum Synch Frequency

2

MHz

Minimum Synch Frequency

1

MHz

Minimum On Time

50

ns

Maximum Duty Cycle

90

%

POK Upper Trip Threshold

FB respect to the nominal value

10

%

POK Lower Trip Threshold

FB respect to the nominal value

-10

%

POK Output Voltage Low

0.4

V

POK Deglitch Timer

40

μs

SYNC_Input High Level

4.6

V

SYNC_Input Low Level

0.4

V

Thermal Shutdown Threshold

Hysteresis = 20°C

150

°C

Note:

5) Production test at +25°C. Specifications over the temperature range are guaranteed by design and characterization.