MP1492 – 2A, 4.2V-16V INPUT, FAST TRANSIENT SYNCHRONOUS STEP-DOWN CONVERTER

MP1492 Rev. 1.1

www.MonolithicPower.com

3

3/13/2012

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ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max

Units

Supply Current (Shutdown)

5

μA

Supply Current (Quiescent, Not

Switching)

1

mA

HS Switch On Resistance

120

mΩ

LS Switch On Resistance

70

mΩ

Switch Leakage

0

10

μA

Current Limit

(5)

After Soft-Start

Time-out

3.0

A

One-Shot On Time

250

ns

Minimum Off Time

130

150

ns

Fold-back Off Time

1.25

μs

OCP hold-off time

50

μs

Feedback Voltage

789

805

821

mV

Feedback Current

10

50

nA

Soft Start Time

1

ms

EN Rising Threshold

1.05

1.35

1.6

V

EN Threshold Hysteresis

500

mV

2

EN Input Current

0

μA

VIN

Under

Voltage

Lockout

Threshold Rising

INUVVth

3.1

V

VIN

Under

Voltage

Lockout

Threshold Hysteresis

INUVHYS

300

mV

Thermal Shutdown

150

°C

Thermal Shutdown Hysteresis

25

°C

Note:

5) Guaranteed by design and characterization..