MP2355DN datasheet(3/10 Pages) MPS

номер детали	MP2355DN

подробное описание детали	3A, 23V, 380KHz Step-Down Converter

PDF	10 Pages

Scroll/Zoom	100%

производитель	MPS [Monolithic Power Systems]

домашняя страница	http://www.monolithicpower.com

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MP2355 – 3A, 23V, 380KHz STEP-DOWN CONVERTER

MP2355 Rev. 1.5

www.MonolithicPower.com

5/1/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

ELECTRICAL CHARACTERISTICS (continued)

VIN = 12V, TA = +25°C, unless otherwise noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

Enable Pull Up Current

VRUN = 0V

1.1

1.8

2.5

µA

EN UVLO Threshold

VEN Rising

2.37

2.54

2.71

EN UVLO Threshold

Hysteresis

210

Soft-Start Period

CSS = 0.1µF

Thermal Shutdown

150

°C

Note:

4) Equivalent output current = 1.5A ≥ 50% Duty Cycle

2.0A ≤ 50% Duty Cycle

Assumes ripple current = 30% of load current.

Slope compensation changes current limit above 40% duty cycle.

TYPICAL PERFORMANCE CHARACTERISTICS

Circuit of Figure 2, VIN = 12V, VO = 3.3V, L1 = 15µH, C1 = 10µF, C2 = 22µF, TA = +25°C, unless

otherwise noted.

VSW

10V/div.

VIN, AC

200mV/div.

VO, AC

20mV/div.

1A/div.

VSW

10V/div.

VIN, AC

20mV/div.

VO, AC

20mV/div.

1A/div.

MP2355-TPC01

Heavy Load

Operation

3A Load

MP2355-TPC02

Light Load

Operation

No Load

VEN

5V/div.

VOUT

1V/div.

1A/div.

MP2355-TPC03

Startup from Shutdown

No C4

3A Resistive Load

VEN

5V/div.

VOUT

1V/div.

1A/div.

Startup from Shutdown

C4 = 10nF

3A Resistive Load

VEN

5V/div.

VOUT

1V/div.

1A/div.

Startup from Shutdown

C4 = 10nF

No Load

MP2355-TPC04

MP2355-TPC05

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