MP1499 – 16V/5A PEAK SYNCHRONOUS STEP-DOWN CONVERTER

MP1499 Rev. 1.0

www.MonolithicPower.com

3

7/26/2012

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© 2012 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameter

Symbol Condition

Min

Typ

Max

Units

Supply Current

Supply Current (Shutdown)

1

μA

Supply Current (Quiescent)

0.6

1

mA

MOSFET

HS Switch On Resistance

70

mΩ

LS Switch On Resistance

25

mΩ

Switch Leakage

1

μA

MOSFET

Current Limit

(6)

40% Duty Cycle

7

9

A

Oscillator and Timer

Oscillator Frequency

430

500

580

kHz

Maximum Duty Cycle

90

95

%

Minimum On Time

(6)

60

ns

Sync Frequency Range

0.2

2

MHz

Reference And Soft Start

Feedback Voltage

791

807

823

mV

(7)

787

807

827

Feedback Current

10

50

nA

Soft-Start Current

8

11

14

μA

Enable And UVLO

EN Rising Threshold

1.2

1.4

1.6

V

EN Falling Threshold

1.1

1.25

1.4

V

EN Input Current

2

μA

0

μA

EN Turn Off Delay

8

μs

VIN Under Voltage Lockout

Threshold-Rising

3.7

3.9

4.1

V

VIN Under Voltage Lockout

Threshold-Hysteresis

650

mV

VCC Regulator

VCC Regulator

5

V

VCC Load Regulation

3

%

Thermal Protection

Thermal Shutdown

(6)

150

ºC

Thermal Hysteresis

(6)

20

ºC

Notes:

6) Guaranteed by design.

7) Not tested in production and guaranteed by over-temperature characterization.