MP3435 – 19A, 600kHz, 22V SYNCHRONOUS BOOST WITH INPUT DISCONNECT

MP3435 Rev. 1.0

MonolithicPower.com

5

11/30/2021

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© 2021 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

VIN = VEN = 3.3V, TJ = -40°C to +125°C (7), typical values are tested at TJ = 25°C, unless otherwise

noted.

Parameter

Symbol

Condition

Min

Typ

Max

Units

Operating input voltage

VIN

3

20

V

Input under-voltage lockout

(UVLO)

INUVLO-R

VIN rising

2.6

2.68

2.76

V

Input UVLO hysteresis

INUVLO-HYS

250

mV

Operating VDD voltage

VDD

VIN = 12V

5

V

Shutdown current

ISD

VEN = 0V, measured on

IN, TJ = 25°C

1

µA

Quiescent current

IQ-SOUT

VFB = 1.35V, no switching,

VOUT = 12V, measured on

SOUT

650

750

µA

IQ-IN

VFB = 1.35V, no switching,

VOUT = 12V, measured on

IN

110

150

Switching frequency

fSW

TJ = 25°C

510

600

690

kHz

TJ = -40°C to +125°C

450

690

Minimum off time (8)

tMIN-OFF

VFB = 0V

190

ns

Minimum on time (8)

tMIN-ON

200

ns

EN turn-on threshold

VEN-ON

VEN rising (switching)

1.26

1.33

1.39

V

EN high threshold

VEN-H

VEN rising (micro power)

1

V

EN low threshold

VEN-L

VEN falling

(micro power)

0.4

V

EN turn-on hysteresis current

IEN-HYS

1V < EN < 1.4V

3

4.5

6

µA

EN input bias current

IEN

VEN = 0V, 3.3V

0

µA

Soft-start (SS) charge current

ISS

5

7

9

µA

FB reference voltage

VFB

TJ = 25°C

1.212

1.225

1.238

V

TJ = -40°C to +125°C

1.207

1.225

1.243

FB input bias current

IFB

VFB = 1V

-50

nA

Error amplifier

transconductance

GEA

160

µA/V

Error amplifier max output

current

IEA(MAX)

VFB = 1V or 1.5V

39

µA

Current to COMP gain

GCS

VGATE = GND

32

A/V

Sense to COMP gain

GXCS

Float GATE,

ΔVSENSE / ΔVCOMP

103

mV/V

COMP switching threshold (8)

VPSM

0.5

V

COMP high clamp

VCOMP_HIGH

2

V

Low-side (LS) switch on

resistance

RON-L

10

m

Ω