MP8847 – 6A, 2.7V-6V, HIGH-EFFICIENCY, SYNCHRONOUS

STEP-DOWN SWITCHER WITH I

MP8847 Rev. 1.02

www.MonolithicPower.com

4

12/28/2017

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2017 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

is guaranteed by characterization, unless otherwise noted.

Parameter

Symbol

Condition

Min

Typ

Max

Units

Input voltage range

2.7

6

V

Quiescent current

EN=1.8V, no switching,

PFM mode

300

μA

Shutdown current

1

μA

Internal reference voltage

0.591

0.600

0.609

V

0.585

0.600

0.615

V

Lowest output voltage

0.591

0.600

0.609

V

0.585

0.600

0.615

V

Highest output voltage

1.216

1.235

1.254

V

1.204

1.235

1.266

V

Output voltage step

5

mV

High-side switch on

resistance

35

mΩ

Low-side switch on

resistance

15

mΩ

UVLO rising threshold

2.55

2.7

V

UVLO hysteretic

150

mV

Switching frequency

0.85

2.2

MHz

Frequency variation

25%

Minimum on time

(7)

60

ns

Switch leakage

0.1

1

μA

EN input current

4

μA

EN logic low voltage

0.4

V

EN logic high voltage

1.8

V

Power good UV threshold

rising

PGVth-Hi Good

0.9

VOUT

Power good UV threshold

falling

PGVth-Lo Fault

0.85

VOUT

Power good OV threshold

rising

PGVth-Hi Fault

1.1

VOUT

Power good OV threshold

falling

PGVth-Lo Good

1.05

VOUT

Power good pull-down

voltage

0.4

V

Power good deglitch time

50

μs

Power good leakage

1

μA

VOUT OVP threshold

Rising edge

+10%