MP2172C – 2A, SYNCHRONOUS STEP-DOWN SWITCHER

MP2172C Rev.1.0

www.MonolithicPower.com

4

4/22/2019

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ELECTRICAL CHARACTERISTICS

VIN = 3.6V, TJ = -40°C to +125°C (6), typical value is tested at TJ = +25°C. Over-temperature limit is

guaranteed by characterization, unless otherwise noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

VIN range

2.38

5.5

V

Under-voltage lockout

threshold rising

2.3

2.38

V

Under-voltage lockout

threshold falling

2.25

V

Under-voltage lockout

threshold hysteresis

200

mV

Feedback voltage

VFB

TJ = 25°C

594

600

606

mV

TJ = -40°C to +125°C

591

600

609

Feedback current

IFB

VFB= 0.63V

50

100

nA

P-FET switch on resistance

RDSON_P

VIN = 5V

75

mΩ

N-FET switch on resistance

RDSON_N

VIN = 5V

45

mΩ

Switch leakage

VEN = 0V, VIN = 6V,

VSW = 0V and 6V, TJ = +25°C

0

1

μA

P-FET peak current limit

2.8

4

A

N-FET valley current limit

2.5

A

On time

tON

VIN = 5V, VOUT = 1.2V

180

220

260

ns

VIN = 3.6V, VOUT = 1.2V

240

300

360

Switching frequency

fs

VOUT = 1.2V

1100

kHz

Minimum off time

tMIN-OFF

100

ns

Minimum on time (7)

tMIN-ON

60

ns

Soft-start time

tSS-ON

VOUT rise from 10% to 90%

0.5

ms

Maximum duty cycle

100

%