MP8652 – 15A, 14V, HIGH FREQUENCY STEP-DOWN WITH SYNCHRONOUS GATE DRIVER

MP8652 Rev. 0.9

www.MonolithicPower.com

3

10/26/2009

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© 2009 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol Condition

Min

Typ

Max

Units

Power Good Delay

20

μs

Power Good Sink Current Capability

Sink 4mA

0.4

V

Power Good Leakage Current

10

nA

5.3

V

5

%

Sync Frequency

0.3

1

MHz

SYNCIN Bias Current

10

nA

SYNCIN Logic High Voltage

2

V

SYNCIN Logic Low Voltage

0.4

V

SYNCHOUT High Level

5mA

4.6

V

SYNCHOUT Low Level

0.4

V

Under Voltage Lockout Threshold Rising

3.85

4.1

4.35

V

Under Voltage Lockout Threshold Hysteresis

900

mV

EN Input Low Voltage

0.4

V

En Input High Voltage

2

V

2

EN Input Current

0.1

μA

Supply Current (Shutdown)

0.1

μA

Supply Current (Quiescent)

1.0

mA

Thermal Shutdown

150

°C

Gate Driver Sink Impedance

1

Ω

Gate Driver Source Impedance

4

Ω

Gate Drive Current Sense Trip Threshold

20

mV

From BG low to SW

high

10

ns

Gate Drive Non-Overlap Time

(see Figure 1)

(4)

From SW low to BG

high

10

ns

.

1V

Td1

Td2

1V

1V

1V

Figure 1—Gate Drive Non-Overlap Time Diagram