MP2145

– 5.5V, 6A, 1.2MHz, COT, BUCK SWITCHER

MP2145 Rev. 1.11

www.MonolithicPower.com

3

12/20/2016

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

© 2016 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max

Units

Supply Current (Quiescent)

40

60

μA

Shutdown Current

0.1

1

μA

IN Under-Voltage Lockout

Threshold

2.4

2.55

2.7

V

IN Under-Voltage Lockout

Hysteresis

300

mV

Regulated FB Voltage

0.594

0.600

0.606

V

FB Input Current

50

nA

EN High Threshold

1.6

V

EN Low Threshold

0.4

V

EN Input Current

2

μA

0

Internal Soft-Start Time

(5)

τ

SS

1.5

ms

High-Side Switch On-Resistance

20

mΩ

Low-Side Switch On-Resistance

12

mΩ

SW Leakage Current

0

1

μA

High-Side Switch Current Limit

Sourcing

7.5

8.1

A

Low-Side Switch Current Limit

(6)

Sinking,

PWM

Mode

5

A

Sinking, PFM Mode

0

Oscillator Frequency

0.96

1.2

1.44

MHz

Minimum On Time

τ

ON_MIN

50

ns

Minimum Off Time

τ

OFF_MIN

60

ns

PG UV Threshold Rising

PGTH_Hi

0.9

VFB

PG UV Threshold Falling

PGTH_Lo

0.85

VFB

PG OV Threshold Rising

PGTH_Hi

1.15

VFB

PG OV Threshold Falling

PGTH_Lo

1.1

VFB

PG Delay

140

μs

PG Sink Current Capability

Sink 1mA

0.4

V

PG INTERNAL Pull Up Resistor

500

k

Ω

Thermal Shutdown Threshold

(6)

150

°C

Thermal Shutdown Hysteresis

(6)

20

°C

MODE Forced PWM Threshold

1.2

V

MODE PFM Threshold

0.4

V

Notes:

5) Guaranteed by characterization

6) Guaranteed by design.