MP2159A datasheet(4/15 Pages) MPS

4 / 15 page

MP2159A – 1 A, 6 V, 1.5 MHz SYNCHRONOUS STEP-DOWN CONVERTER

MP2159A Rev. 1.02

www.MonolithicPower.com

6/30/2016

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

ELECTRICAL CHARACTERISTICS

VIN = 5 V, TA = +25C, unless otherwise noted.

Parameter

Symbol

Condition

Min

Typ

Max

Units

2.5 V ≤ VIN ≤ 6 V,

TA=25C

-1.5

0.600

+1.5

V/%

Feedback voltage

VFB

TA = -40C to +85C

(6)

-2.5

+2.5

V/%

Feedback current

IFB

VFB = 0.6 V

PFET switch on resistance

RDSON_P

120

mΩ

NFET switch on resistance

RDSON_N

mΩ

Switch leakage

VEN = 0 V, VIN = 6 V

VSW = 0 V and 6 V

μA

PFET current limit

VIN = 5 V, VOUT = 1.2 V

166

On time

TON

VIN = 3.6 V, VOUT = 1.2 V

220

VOUT = 1.2 V

-20%

1500

+20% kHz/%

Switching frequency

TA = -40

oC to +85oC(6)

-25%

1500

+25% kHz/%

Minimum off time

(6)

TMIN-OFF

Soft-start time

TSS-ON

VOUT from 10% to 90%

0.6

1.15

1.7

Power good upper trip threshold

PGH

FB voltage respect to the

regulation

+10

Power good lower trip threshold

PGL

-10

Power good delay

PGD

μs

Power good sink current capability

VPG-L

Sink 1 mA

0.4

Power good logic high voltage

VPG-H

VIN = 5 V, VFB = 0.6 V

4.9

Power good internal pull-up

resistor

RPG

550

kΩ

Under-voltage lockout threshold—

rising

2.15

2.3

2.45

Under-voltage lockout threshold—

hysteresis

260

EN input logic low voltage

0.4

EN input logic high voltage

1.2

VEN = 2 V

1.5

μA

EN input current

VEN = 0 V

μA

Supply current (shutdown)

VEN = 0 V, VIN = 3 V

100

Supply current (quiescent)

VEN = 2 V, VFB = 0.63 V,

VIN = 5 V

μA

Thermal shutdown

(5)

150

C

Thermal hysteresis

(5)

C

NOTES:

5) Guaranteed by design.

6) Guaranteed by characterization test.

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