MP2482 – 5A, 30V, 420kHZ STEP-DOWN CONVERTER

MP2482 Rev.1.4

www.MonolithicPower.com

3

9/21/2011

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

Preliminary Specifications Subject to Change

© 2011 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol Condition

Min

Typ

Max

Units

Feedback Voltage

4.5V

0.788

0.808

0.828

V

Feedback Current

10

nA

Switch On Resistance

(5)

50

mΩ

Switch Leakage

0

10

μA

Current Limit

(5)

7.5

9

A

Oscillator Frequency

310

420

530

kHz

Fold-back Frequency

25

115

205

kHz

Maximum Duty Cycle

85

90

%

Minimum On Time

100

ns

Under Voltage Lockout Threshold Rising

3.9

4.1

4.3

V

Under Voltage Lockout Threshold Hysteresis

880

mV

EN Input Low Voltage

0.4

V

EN Input High Voltage

1.5

V

2

EN Input Current

0

μA

Sync Frequency Range (Low)

300

kHz

Sync Frequency Range (High)

1.5

MHz

Enable Turnoff Delay

5.0

μs

Supply Current (Shutdown)

0

μA

Supply Current (Quiescent)

0.9

1.1

mA

Thermal Shutdown

150

°C

Power Good Control

Power Good Threshold Rising

0.69

0.74

0.79

V

Power Good Threshold Hysteresis

40

mV

PG Pin Level

PG Sink 4mA

0.4

V

Note:

5) Guaranteed by design.