LM2574M-12 datasheet(7/38 Pages) TI1

部件名	LM2574M-12

功能描述	SIMPLE SWITCHER 0.5A Step-Down Voltage Regulator

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制造商	TI1 [Texas Instruments]

网页	http://www.ti.com

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7

LM2574, LM2574HV

www.ti.com

SNVS104D – JUNE 1999 – REVISED APRIL 2016

Product Folder Links: LM2574 LM2574HV

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(1)

Test circuit in Figure 22 and Figure 27.

(2)

All limits specified at room temperature TYP and MAX. All room temperature limits are 100% production tested. All limits at temperature

extremes are specified through correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate

Average Outgoing Quality Level.

6.10 Electrical Characteristics – Adjustable Version

TJ = 25°C, and all MIN and MAX apply over full operating temperature range. VIN = 12 V, ILOAD = 100 mA (unless otherwise

noted).

PARAMETER(1)

TEST CONDITIONS

MIN

TYP(2)

MAX(2)

UNIT

VFB

Feedback voltage

VIN = 12 V, ILOAD = 100 mA

1.217

1.23

1.243

V

LM2574, 7 V

≤ VIN ≤ 40 V,

0.1 A

≤ ILOAD ≤ 0.5 A,

VOUT programmed for 5 V

TJ = 25°C

1.193

1.23

1.267

−40°C ≤ TJ ≤ 125°C

1.18

1.28

LM2574HV, 7 V

≤ VIN ≤ 60 V,

0.1 A

≤ ILOAD ≤ 0.5 A,

VOUT programmed for 5 V

TJ = 25°C

1.193

1.23

1.273

−40°C ≤ TJ ≤ 125°C

1.18

1.286

η

Efficiency

VIN = 12 V, VOUT = 5 V, ILOAD = 0.5 A

77%

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