MP5455 – PEAK POWER ASSIST FOR LOW-POWER APPLICATIONS

MP5455 Rev. 1.01

www.MonolithicPower.com

4

2/2/2018

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ELECTRICAL CHARACTERISTICS

Parameter

Symbol Condition

Min

Typ

Max

Units

Input supply voltage range

2.7

7

V

Supply current (shutdown)

2

μA

Supply current (quiescent)

2

mA

Thermal shutdown

(5)

150

°C

Thermal shutdown

hysteresis

(5)

30

°C

VIN under-voltage lockout

threshold rising

2.5

2.7

V

VIN under-voltage lockout

threshold hysteresis

0.3

0.4

0.5

V

EN/ENCH UVLO threshold

rising

1.2

V

EN/ENCH UVLO threshold

falling

0.4

V

Current limit MOSFET on

resistance

60

65

mΩ

Continuous current limit

4.6

A

4.1

-10%

3.7

10%

Off-state leakage current

VIN = 6V, VB = 0V or VB = 6V,

VIN = 0V

2

μA

Rise time (dV/dt)

DVDT pin floating

0.5

0.9

1.5

ms

10

100

Pre-charge current

130

mA

Charge peak current in

boost mode

ICH pin floating

500

mA

400

200

Feedback voltage

0.77

0.79

0.81

V

Buck mode dumping current

limit

5

A

VB under-voltage lockout

threshold rising

(6)

1.8

2.2

2.5

V

VB under-voltage lockout

threshold hysteresis

(6)

0.15

0.25

0.35

V

NOTES:

5) Guaranteed by characterization, not tested in production.

6) VB UVLO is applied to energy storage and release circuitry.