MP5403B datasheet(5/23 Pages) MPS

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MP5403B

– DUAL BUCK AND ONE LOAD SWITCH PMIC

MP5403B Rev. 1.0

www.MonolithicPower.com

12/5/2017

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

ELECTRICAL CHARACTERISTICS

VIN1/2 = 3.6V, VIN3 = 3.6V, TJ = -40°C to 125°C(7), typical value tested at TJ = 25°C unless otherwise

noted.

Parameters

Symbol

Condition

Min

Typ

Max

Units

For Buck Regulators (VIN1 provides control voltage if VIN3 is lower than 2.7V)

Input voltage range

VIN1

For VIN1

2.7

Under-voltage lockout threshold

rising

VIN1_UVLO_R

For VIN1

2.3

2.5

2.65

Under-voltage lockout threshold

hysteresis

VIN1_UVLO_H

For VIN1

250

Input voltage range for rail 2

VIN2

VIN1 > VIN1_UVLO_R

VIN2 under-voltage lockout

threshold rising

VIN2_UVLO_R

For VIN2

1.8

1.85

VIN2 under-voltage lockout

threshold hysteresis

VIN2_UVLO_H

For VIN2

300

Supply current (shutdown)

ISD

VEN1/2/3 = 0V, TJ = 25°C

μA

Supply current (quiescent)

IQ1+Q2

VEN1/2 = 2V, VEN3 = 0V,

VFB1/2 =1V

110

μA

High-side switch on resistance

for peak 5A switcher

RDSON1_H

mΩ

Low-side switch on resistance

for peak 5A switcher

RDSON1_L

mΩ

High-side switch on resistance

for peak 4A switcher

RDSON2_H

mΩ

Low-side switch on resistance

for peak 4A switcher

RDSON2_L

mΩ

Switch leakage current

ILK_SW1/2

VEN1/2 = 0V, VIN1/2 = 6V,

VSW1/2 = 0V and 6V,

TJ = 25°C

μA

High-side current limit for peak

5A switcher

ILIM1_H

6.2

8.5

High-side current limit for peak

4A switcher

ILIM2_H

Low-side zero crossing current

IZCD1/2

For both channels

0.1

Oscillator frequency

FSW1/2

CCM

1.2

1.5

1.8

MHz

Phase shift

PhS

CCM

180

degree

Minimum on time (6)

TMIN_ON

Minimum off time (6)

TMIN_OFF

100

Maximum duty cycle (6)

DMAX

100

Feedback voltage

VFB1/2

TJ = 25°C

594

600

606

TJ = -40°C to 125°C (7)

591

600

609

Feedback currents

IFB1/2

FB1/2 = 0.65V

Internal soft-start time

TSS1/2

For both channels

0.35

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