LM22671_15 datasheet(5/29 Pages) TI

номер детали	LM22671

подробное описание детали	LM22671/-Q1 42 V, 500 mA SIMPLE SWITCHER짰 Step-Down Voltage Regulator with Features

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производитель	TI [Texas Instruments]

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LM22671, LM22671-Q1

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SNVS589N – 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

LM22671-5.0

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

LM22671-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

ISTDBY

Standby Quiescent Current

EN Pin = 0 V

25

40

µA

0.62

0.7

0.84

ICL

Current Limit

A

–40°C

≤ TJ ≤ 125°C

0.56

0.9

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

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

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

1

FSYNC

VSYNC = 3.5 V, 50% duty-cycle

MHz

Frequency

Synchronization Threshold

1.75

VSYNC

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 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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Product Folder Links: LM22671 LM22671-Q1

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