MP3429

– 21A, HIGH-EFFICIENCY, FULLY INTEGRATED, SYNC, BOOST CONVERTER

MP3429 Rev. 1.0

www.MonolithicPower.com

4

6/8/2017

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© 2017 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

otherwise noted.

Parameter

Symbol

Condition

Min

Typ

Max

Units

Power Supply

Start-up input voltage

No VDD bias

2.7

13

V

VDD = 3V

0.9

13

V

Operating input voltage

0.8

13

V

VIN = 2.7V, 0 - 10mA

2.3

2.55

V

VIN = 12V, 0 - 15mA

3.4

V

VDD rising

2.2

2.4

2.6

V

VDD UVLO falling

VDD falling

2

2.2

2.4

V

Shutdown current

2

μA

Quiescent current

VOUT = 9V, no switching,

measured on VIN

25

μA

VOUT = 9V, no switching,

measured on VOUT

450

550

μA

Enable (EN) Control

EN turn-on threshold voltage

1.23

V

EN high threshold voltage

1.0

V

EN low threshold voltage

0.4

V

EN turn-on hysteresis current

3.5

5

6.5

μA

EN input current

0

μA

EN turn-on delay

EN on to switching

180

μs

Frequency

Switching frequency

VIN = 3.3V, VOUT = 9V

500

600

700

kHz

80

ns

LS-FET maximum on time

7.5

μs

Loop Control

FB reference voltage

0.99

1

1.01

V

0.985

1

1.015

V

FB input current

50

nA

300

V/V

Error amp transconductance

450

μA/V

Error amp max. output current

63

μA

-60

μA

COMP to current gain

Gcs

22

A/V

0.5

V

COMP high clamp

2.6

V

Soft-start charge current

6

7.5

9

μA

MODE Selection

PSM MODE tri-state region

0.2

0.7

V

0.9

1.2

FCCM MODE tri-state region

1.6

VDD

Ultrasonic mode frequency

23

33

kHz

HS-FET ZCD

μH,

VOUT = 9V

-200

0

300

mA

FCCM

-2

A