LM22672 datasheet(5/30 Pages) TI

Numer części	LM22672

Szczegółowy opis	SIMPLE SWITCHER짰 Step-Down Voltage Regulator with Features

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Producent	TI [Texas Instruments]

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LM22672, LM22672-Q1

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SNVS588M – SEPTEMBER 2008 – 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

LM22672-5.0

Feedback Voltage

VIN = 8 V to 42 V

4.925

5.0

5.075

VFB

V

VIN = 8 V to 42 V, –40°C ≤ TJ ≤

4.9

5.1

125°C

LM22672-ADJ

Feedback Voltage

VIN = 4.7 V to 42 V

1.266

1.285

1.304

VFB

V

VIN = 4.7 V to 42 V, –40°C ≤ TJ ≤

1.259

1.311

125°C

ALL OUTPUT VOLTAGE VERSIONS

VFB = 5 V

3.4

IQ

Quiescent Current

mA

VFB = 5 V, –40°C ≤ TJ ≤ 125°C

6

ISTDBY

Standby Quiescent Current

EN Pin = 0 V

25

40

µA

1.3

1.5

1.7

ICL

Current Limit

A

–40°C

≤ TJ ≤ 125°C

1.2

1.8

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

0.2

2

µA

IL

Output Leakage Current

VSW = –1 V

0.1

3

µA

0.2

0.24

RDS(ON)

Switch On-Resistance

Ω

–40°C

≤ TJ ≤ 125°C

0.32

500

Fsw

Oscillator Frequency

kHz

–40°C

≤ TJ ≤ 125°C

400

600

200

TOFF

Minimum Off-time

ns

–40°C

≤ TJ ≤ 125°C

100

300

TON

Minimum On-time

100

ns

IBIAS

Feedback Bias Current

VFB = 1.3 V (ADJ Version Only)

230

nA

Falling

1.6

VEN

Enable Threshold Voltage

V

Falling, –40°C

≤ TJ ≤ 125°C

1.3

1.9

VENHYST

Enable Voltage Hysteresis

0.6

V

IEN

Enable Input Current

EN Input = 0 V

6

µA

Maximum Synchronization

FSYNC

VSYNC = 3.5 V, 50% duty-cycle

1

MHz

Frequency

Synchronization Threshold

VSYNC

1.75

V

Voltage

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 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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Product Folder Links: LM22672 LM22672-Q1

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