LMZ14203EXT datasheet(5/31 Pages) TI

Il numero della parte	LMZ14203EXT

Spiegazioni elettronici	3A SIMPLE SWITCHER Power Module With 42-V Maximum Input Voltage for Military and Rugged Applications

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Produttore elettronici	TI [Texas Instruments]

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LMZ14203EXT

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SNVS666H – JUNE 2010 – REVISED OCTOBER 2015

Electrical Characteristics (continued)

Limits are for TJ = 25°C unless otherwise specified. Minimum and Maximum limits are ensured through test, design or

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

purposes only. Unless otherwise stated the following conditions apply: VIN = 24 V, VOUT = 3.3 V.

PARAMETER

CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

REGULATION AND OVERVOLTAGE COMPARATOR

0.804

VSS >+ 0.8 V

TJ = –55°C to

over the junction

V

125°C

temperature (TJ) range of

0.784

0.825

In-regulation feedback

IO = 3 A

VFB

–55°C to 125°C

voltage

VSS >+ 0.8 V

TJ = 25°C

0.786

0.802

0.818

V

IO = 10 mA

VFB-OV

Feedback overvoltage

0.92

V

protection threshold

IFB

Feedback input bias current

5

nA

IQ

Non-switching input current

VFB = 0.86 V

1

mA

ISD

Shutdown quiescent current

VEN = 0 V

25

μA

THERMAL CHARACTERISTICS

TSD

Thermal shutdown

Rising

165

°C

TSD-HYST

Thermal shutdown hysteresis Falling

15

°C

PERFORMANCE PARAMETERS

ΔVO

Output voltage ripple

8

mVPP

ΔVO/ΔVIN Line regulation

VIN = 12 V to 42 V, IO = 3 A

0.01%

ΔVO/IOUT Load regulation

VIN = 24 V

1.5

mV/A

VIN = 24 V, VO = 3.3 V, IO = 1 A

92%

η

Efficiency

VIN = 24 V, VO = 3.3 V, IO = 3 A

85%

6.6 Switching Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ON/OFF TIMER

tON-MIN

ON timer minimum pulse width

150

ns

tOFF

OFF timer pulse width

260

ns

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