LM2742 datasheet(5/33 Pages) TI

부품명	LM2742

상세설명	N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages

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제조업체	TI [Texas Instruments]

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5 / 33 page

LM2742

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SNVS266C – MARCH 2004 – REVISED MARCH 2013

ELECTRICAL CHARACTERISTICS (continued)

VCC = 5V unless otherwise indicated. Typicals and limits appearing in plain type apply for TA=TJ=+25°C. Limits appearing in

boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are specified by design,

test, or statistical analysis.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

OSCILLATOR

RFADJ = 590kΩ

50

RFADJ = 88.7kΩ

300

RFADJ = 42.2kΩ, 0°C to +125°C

500

600

700

fOSC

PWM Frequency

kHz

RFADJ = 42.2kΩ, -40°C to +125°C

490

600

700

RFADJ = 17.4kΩ

1400

RFADJ = 11.3kΩ

2000

fPWM = 300kHz

90

D

Max Duty Cycle

%

fPWM = 600kHz

88

ton-min

Minimum on-time

40

ns

LOGIC INPUTS AND OUTPUTS

VSD-IH

SD Pin Logic High Trip Point

2.6

3.5

V

VSD-IL

SD Pin Logic Low Trip Point

0°C to +125°C

1.3

1.6

V

-40°C to +125°C

1.25

1.6

VPWGD-TH-LO

PWGD Pin Trip Points

FB Voltage Going Down

0°C to +125°C

0.413

0.430

0.446

V

-40°C to +125°C

0.410

0.430

0.446

VPWGD-TH-HI

PWGD Pin Trip Points

FB Voltage Going Up

0°C to +125°C

0.691

0.710

0.734

V

-40°C to +125°C

0.688

0.710

0.734

VPWGD-HYS

PWGD Hysteresis

FB Voltage Going Down FB Voltage Going

35

mV

Up

110

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유사한 부품 번호 - LM2742

제조업체	부품명	데이터시트	상세설명
National Semiconductor ...	LM2742	619Kb / 22P	N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages

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유사한 설명 - LM2742

제조업체	부품명	데이터시트	상세설명
National Semiconductor ...	LM2742	619Kb / 22P	N-Channel FET Synchronous Buck Regulator Controller for Low Output Voltages
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Winbond	W83320S	506Kb / 18P	N-Channel FET Synchronous Buck Regulator Controller
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Nuvoton Technology Corp...	W83320G	422Kb / 20P	N-Channel FET Synchronous Buck Regulator Controller

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LM2742 데이터시트(PDF) 5 Page - Texas Instruments

LM2742 데이터시트(HTML) 5 Page - Texas Instruments

유사한 부품 번호 - LM2742

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