LM2679T-5.0 datasheet(6/37 Pages) TI1

No de pièce	LM2679T-5.0

Description	LM2679 SIMPLE SWITCHER짰 5-A Step-Down Voltage Regulator With Adjustable Current Limit

Download	37 Pages

Scroll/Zoom	100%

Fabricant	TI1 [Texas Instruments]

Site Internet	http://www.ti.com

Logo

6 / 37 page

6

LM2679

SNVS026O – MARCH 2000 – REVISED JUNE 2016

www.ti.com

Product Folder Links: LM2679

Submit Documentation Feedback

(1)

All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are specified

through correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level

(AOQL).

(2)

Typical values are determined with TA = TJ = 25°C and represent the most likely norm.

6.7 Electrical Characteristics – 12 V

Specifications apply for TA = TJ = 25°C and RADJ = 5.6 kΩ (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

VOUT

Output voltage

VIN = 15 V to 40 V,

100 mA

≤ IOUT ≤ 5 A

TJ = 25°C

11.76

12

12.24

V

TJ = –40°C to 125°C

11.64

12.36

η

Efficiency

VIN = 24 V, ILOAD = 5 A

92%

(1)

All room temperature limits are 100% tested during production with TA = TJ = 25°C. All limits at temperature extremes are specified

through correlation using standard Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level

(AOQL).

(2)

Typical values are determined with TA = TJ = 25°C and represent the most likely norm.

6.8 Electrical Characteristics – Adjustable

Specifications apply for TA = TJ = 25°C and RADJ = 5.6 kΩ (unless otherwise noted).

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

VFB

Feedback voltage

VIN = 8 V to 40 V,

100 mA

≤ IOUT ≤ 5 A,

VOUT programmed for 5 V

TJ = 25°C

1.186

1.21

1.234

V

TJ = –40°C to 125°C

1.174

1.246

η

Efficiency

VIN = 12 V, ILOAD = 5 A

84%

(1)

The peak switch current limit is determined by the following relationship: ICL = 37,125 / RADJ

6.9 Electrical Characteristics – All Output Voltage Versions

Specifications are for TA = TJ = 25°C, VIN = 12 V for the 3.3 V, 5-V, and adjustable versions, and VIN = 24 V for the 12-V

version (unless otherwise specified).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

IQ

Quiescent current

VFEEDBACK = 8 V for 3.3-V, 5-V, and adjustable versions,

VFEEDBACK = 15 V for 12-V version

4.2

6

mA

VADJ

Current limit adjust

voltage

TJ = 25°C

1.181

1.21

1.229

V

TJ = –40°C to 125°C

1.169

1.246

ICL

Current limit

RADJ = 5.6 kΩ

(1)

TJ = 25°C

5.5

6.3

7.6

A

TJ = –40°C to 125°C

5.3

8.1

IL

Output leakage current

VIN = 40 V, soft-start pin = 0 V

VSWITCH = 0 V

1

1.5

mA

VSWITCH = −1 V

6

15

RDS(ON)

Switch ON-resistance

ISWITCH = 5 A

TJ = 25°C

0.12

0.14

Ω

TJ = –40°C to 125°C

0.225

fO

Oscillator frequency

Measured at switch pin

TJ = 25°C

260

kHz

TJ = –40°C to 125°C

225

280

D

Duty cycle

Maximum duty cycle

91%

Minimum duty cycle

0%

IBIAS

Feedback bias

current

VFEEDBACK = 1.3 V (adjustable version only)

85

nA

VSFST

Soft-start threshold

voltage

TJ = 25°C

0.63

V

TJ = –40°C to 125°C

0.53

0.74

ISFST

Soft-start pin current

Soft-start pin = 0 V

TJ = 25°C

3.7

μA

TJ = –40°C to 125°C

6.9

Numéro de pièce similaire - LM2679T-5.0

Fabricant	No de pièce	Fiches technique	Description
National Semiconductor ...	LM2679T-5.0	355Kb / 24P	SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit

More results

Description similaire - LM2679T-5.0

Fabricant	No de pièce	Fiches technique	Description
Texas Instruments	LM2679	1Mb / 35P	[Old version datasheet] LM2679 SIMPLE SWITCHER짰 5A Step-Down Voltage Regulator with Adjustable Current
National Semiconductor ...	LM2673	650Kb / 26P	SIMPLE SWITCHER짰 3A Step-Down Voltage Regulator with Adjustable Current Limit
Texas Instruments	LM2673	2Mb / 37P	[Old version datasheet] LM2673 SIMPLE SWITCHER짰 3-A Step-Down Voltage Regulator With Adjustable Current Limit
National Semiconductor ...	LM22679	386Kb / 16P	5A SIMPLE SWITCHER짰, Step-Down Voltage Regulator with Adjustable Soft-Start and Current Limit
	LM2679	355Kb / 24P	SIMPLE SWITCHER 5A Step-Down Voltage Regulator with Adjustable Current Limit
	LM2673	451Kb / 26P	SIMPLE SWITCHER 3A Step-Down Voltage Regulator with Adjustable Current Limit
Texas Instruments	LM22672	1Mb / 30P	[Old version datasheet] SIMPLE SWITCHER짰 Step-Down Voltage Regulator with Features
Texas Instruments	LM2678	2Mb / 36P	[Old version datasheet] LM2678 SIMPLE SWITCHER짰 High Efficiency 5-A Step-Down Voltage Regulator
National Semiconductor ...	LM1575	848Kb / 28P	SIMPLE SWITCHER짰 1A Step-Down Voltage Regulator
Texas Instruments	LM2576S-5.0-NOPB	3Mb / 37P	[Old version datasheet] SIMPLE SWITCHER짰 3A Step-Down Voltage Regulator

More results

LM2679T-5.0 Fiches technique(PDF) 6 Page - Texas Instruments

LM2679T-5.0 Fiches technique(HTML) 6 Page - Texas Instruments

Numéro de pièce similaire - LM2679T-5.0

Description similaire - LM2679T-5.0

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37

Fiches technique Télécharger

Lien URL