MP8846 – 6A, 8V SYNCHRONOUS STEP-DOWN CONVERTER

MP8846 Rev. 1.0

www.MonolithicPower.com

4

5/19/2015

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ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Condition

Min

Typ

Max

Units

Supply Current (Shutdown)

5

μA

Supply Current (Quiescent)

PFM Mode

500

760

HS Switch-On Resistance

45

mΩ

LS Switch-On Resistance

18

mΩ

Switch Leakage

1

μA

Current Limit

(7)

Under 40% Duty Cycle

7.5

9.5

A

Default Oscillator Frequency

480

600

680

kHz

Foldback Frequency

0.5

Maximum Duty Cycle

90

95

%

Minimum On Time

(7)

60

ns

Feedback Voltage

594

600

606

mV

588

600

612

mV

VOUT

1188

1200

1212

mV

1182

1200

1218

mV

FB Current

10

50

nA

EN Rising Threshold

1.2

1.4

1.6

V

EN Hysteresis

150

mV

EN Input Current

2

μA

SYNC Frequency Range

0.3

2

MHz

ADD High Level

2

V

ADD Low Level

0.4

V

VIN Under-Voltage Lockout

Threshold-Rising

3.8

4

4.25

V

VIN Under-Voltage Lockout

Threshold-Hysteresis

600

mV

VCC Regulator

5

V

VCC Load Regulation

1.5

%

Power Good Threshold Rising

0.9

VOUT

Power Good Threshold Falling

0.7

VOUT

Power Good Deglitch Time

(7)

80

us

Soft-Start Current

6

12

18

μA

Thermal Shutdown

(7)

160

°C

Thermal Hysteresis

(7)

20

°C

DAC Resolution

(7)

DAC

7

Bits

Notes:

7) Guaranteed by design and characterization test.