MP2174C

– 5.5V, 4A, 1.1MHZ, SYNCHRONOUS STEP-DOWN SWITCHER

MP2174C Rev. 1.0

www.MonolithicPower.com

4

8/7/2019

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© 2019 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = 3.6V, TA = -40°C to +125°C (6), typical value is tested at TJ = 25°C, unless otherwise noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

Feedback voltage

VFB

2.7

V ≤ VIN ≤ 5.5V

TJ = 25°C

594

600

606

mV

Feedback voltage

VFB

2.7

V ≤ VIN ≤ 5.5V

588

600

612

mV

Feedback current

IFB

VFB = 0.63V

10

50

nA

PFET switch on resistance

RDSON_P

VIN = 5V

35

mΩ

NFET switch on resistance

RDSON_N

VIN = 5V

18

mΩ

Switch leakage

VEN = 0V, VIN = 5.5V,

VSW = 0V and 5.5V,

TJ = 25°C

0

5

μA

PFET peak current limit (7)

TJ = 25°C

5

6.5

A

NFET valley current limit (7)

4.5

A

On time

tON

VIN = 5V, VOUT = 1.2V

220

ns

VIN = 3.6V, VOUT = 1.2V

300

Switching frequency

fSW

VOUT = 1.2V

1100

kHz

Minimum off time

tMIN-OFF

100

ns

Minimum on time (7)

tMIN-On

80

ns

Soft-start time

tSS-ON

From 10% VOUT to 90%

VOUT

0.5

1

ms

Soft-stop time

tSS-OFF

From 90% VOUT to 10%

VOUT

0.3

ms

EN off delay

VEN off to 90% VOUT drop

0.4

ms

Power good upper trip threshold

FB with respect to the

regulation

+10

%

Power good lower trip threshold

-10

%

Power good delay

Rising

90

μs

Power good sink current

capability

VPG_LO

Sink 1mA

0.4

V

Power good logic high voltage

VPG_HI

VIN = 5V, VFB = 0.63V

4.9

V

Under-voltage lockout threshold

rising

-40°C

≤ TJ ≤ +85°C

2.48

2.68

V

Under-voltage lockout threshold

hysteresis

450

mV