LM22679-Q1 datasheet(5/27 Pages) TI

Part #	LM22679-Q1

Description	LM22679/-Q1 42-V, 5-A SIMPLE SWITCHER짰 Step-Down Voltage Regulator With Features

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Manufacturer	TI [Texas Instruments]

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LM22679, LM22679-Q1

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SNVS581L – FEBRUARY 2013 – REVISED NOVEMBER 2014

6.6 Electrical Characteristics

Typical values represent the most likely parametric norm at TA = TJ = 25°C, and are provided for reference purposes only.

Unless otherwise specified: VIN = 12 V.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

LM22679-5.0

VIN = 8 V to 42 V

4.925

5.0

5.075

VFB

Feedback Voltage

V

VIN = 8 V to 42 V, –40°C ≤ TJ ≤ 125°C

4.9

5.1

LM22679-ADJ

VIN = 4.7 V to 42 V

1.266

1.285

1.304

VFB

Feedback Voltage

V

VIN = 4.7 V to 42 V, –40°C ≤ TJ ≤ 125°C

1.259

1.311

ALL OUTPUT VOLTAGE VERSIONS

VFB = 5 V

3.4

IQ

Quiescent Current

mA

VFB = 5 V, –40°C ≤ TJ ≤ 125°C

6

0.8

VADJ

Current Limit Adjust Voltage

0.65

0.9

V

–40°C

≤ TJ ≤ 125°C

6.0

7.1

8.4

ICL

Current Limit

A

–40°C

≤ TJ ≤ 125°C

5.75

8.75

VIN = 42 V, SS Pin = 0 V, VSW = 0 V

32

60

µA

IL

Output Leakage Current

VSW = –1 V

31

75

µA

0.10

0.14

RDS(ON)

Switch On-Resistance

Ω

0.2

500

fO

Oscillator Frequency

kHz

–40°C

≤ TJ ≤ 125°C

400

600

200

TOFFMIN

Minimum Off-time

ns

–40°C

≤ TJ ≤ 125°C

100

300

TONMIN

Minimum On-time

100

ns

IBIAS

Feedback Bias Current

VFB = 1.3 V (ADJ Version Only)

230

nA

50

ISS

Soft-start Current

µA

–40°C

≤ TJ ≤ 125°C

30

70

TSD

Thermal Shutdown Threshold

150

°C

(1)

MIN and MAX limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation

using Statistical Quality Control (SQC) methods. Limits are used to calculate TI's Average Outgoing Quality Level (AOQL).

(2)

Typical values represent most likely parametric norms at the conditions specified and are not ensured.

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