MP2233 – SYNCHRONOUS, STEP-DOWN CONVERTER WITH INTERNAL MOSFETS

MP2233 Rev. 1.01

www.MonolithicPower.com

3

12/6/2012

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© 2012 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameter

Symbol Condition

Min

Typ

Max

Units

Supply Current (Shutdown)

1

μA

Supply Current (Quiescent)

0.8

1

mA

HS-Switch ON Resistance

80

mΩ

LS-Switch ON Resistance

30

mΩ

Switch Leakage

1

μA

Current Limit

(6)

Under 40% Duty Cycle

4

4.6

A

Oscillator Frequency

1100

1400

1700

kHz

Fold-back Frequency

0.15

Maximum Duty Cycle

(6)

89

%

Minimum ON Time

(6)

40

ns

Sync Frequency Range

0.3

3

MHz

784

800

816

Feedback Voltage

(7)

780

800

820

mV

Feedback Current

10

50

nA

EN Rising Threshold

1.2

1.4

1.6

V

EN Falling Threshold

1.1

1.25

1.4

V

2

μA

EN Input Current

0

μA

EN Turn Off Delay

5

μs

Threshold-Rising

3.7

3.9

4.1

V

Threshold-Hysteresis

650

mV

VCC Regulator

5

V

VCC Load Regulation

3

%

Soft-Start Current

10

14

18

μA

Thermal Shutdown

(6)

150

°C

Thermal Hysteresis

(6)

20

°C

Notes:

6) Guaranteed by design.

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