MP1660

– SYNCHRONOUS STEP-DOWN CONVERTER WITH INTERNAL MOSFETS

MP86953 Rev. 1.0

www.MonolithicPower.com

4

6/9/2020

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ELECTRICAL CHARACTERISTICS

VIN = 12V, TJ = -40°C to +125°C (7), typical value is tested at TJ = +25°C, unless otherwise noted.

Parameter

Symbol

Condition

Min

Typ

Max

Units

Shutdown supply current

IIN

VEN = 0V

10

μA

Quiescent supply current

IQ

TJ = -40°C to +125°C, VEN = 2V,

VFB = 0.65V

0.15

0.19

0.3

mA

TJ = 25°C, VEN = 2V,

VFB = 0.65V

0.16

0.19

0.23

mA

HS switch on resistance

HSRDS-ON

VBST-SW = 3.3V

110

mΩ

LS switch on resistance

LSRDS-ON

60

mΩ

Switch leakage

SWLKG

VEN = 0V, VSW = 12V

10

μA

Valley current limit

ILIMIT

4

A

Zero-current detection

IZCD

VOUT = 3.3V, LO = 4.7

μH,

IOUT = 0A

-150

-20

+150

mA

Oscillator frequency

fSW

420

600

780

kHz

Minimum on time (8)

tON_MIN

45

ns

Minimum off time (8)

tOFF_MIN

180

ns

Feedback voltage

VREF

TJ = 25°C

591

606

621

mV

Feedback voltage

VREF

TJ = -40°C to +125 °C

587

606

625

mV

Feedback current

IFB

10

100

nA

FB under-voltage threshold

(high to low)

VUV_TH

Hiccup entry

68%

VREF

Hiccup duty cycle (8)

DHICCUP

25

%

EN rising threshold

VEN_RISING

1.14

1.2

1.26

V

EN hysteresis

VEN_HYS

100

mV

EN input current

IEN

VEN = 2V

2

µA

VIN under-voltage lockout

rising threshold

INUVVTH

3.7

4.1

4.35

V

VIN under-voltage lockout

threshold hysteresis

INUVHYS

330

mV

Soft-start time

tSS

0.6

1

1.4

ms

Thermal shutdown (8)

TSD

150

°C

Thermal hysteresis (8)

TSDHYS

20

°C

Notes:

7) Not tested in production. Guaranteed by over-temperature correlation.

8) Guaranteed by design and engineering sample characterization.