LM2733XMFSLASHNOPB datasheet(4/26 Pages) TI

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LM2733

SNVS209F – NOVEMBER 2002 – REVISED DECEMBER 2014

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6.3 Recommended Operating Conditions

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

MIN

MAX

UNIT

Input Supply Voltage (VIN)

2.7

14.0

SHDN Pin Voltage

VIN

Junction Temperature Range

−40

125

°C

6.4 Thermal Information

LM2733

THERMAL METRIC(1)

DBV

UNIT

5 PINS

RθJA

Junction-to-ambient thermal resistance

210

RθJC(top)

Junction-to-case (top) thermal resistance

122

RθJB

Junction-to-board thermal resistance

38.4

°C/W

ψJT

Junction-to-top characterization parameter

12.8

ψJB

Junction-to-board characterization parameter

37.5

RθJC(bot)

Junction-to-case (bottom) thermal resistance

n/a

(1)

For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.

6.5 Electrical Characteristics

Unless otherwise specified: VIN = 5 V, VSHDN = 5 V, IL = 0A, TJ = 25°C.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

VIN

Input Voltage

−40°C ≤ TJ ≤ +125°C

2.7

ISW

Switch Current Limit

See(3)

1.0

1.5

RDS(ON)

Switch ON Resistance

ISW = 100 mA

500

650

Ω

SHDNTH

Shutdown Threshold

Device ON,

−40°C ≤ TJ ≤ +125°C

1.5

Device OFF,

−40°C ≤ TJ ≤

0.50

+125°C

ISHDN

Shutdown Pin Bias Current

VSHDN = 0

VSHDN = 5 V

µA

VSHDN = 5 V, −40°C ≤ TJ ≤

+125°C

VFB

Feedback Pin Reference Voltage

VIN = 3 V

1.230

VIN = 3 V, −40°C ≤ TJ ≤ +125°C

1.205

1.255

IFB

Feedback Pin Bias Current

VFB = 1.23 V

Quiescent Current

VSHDN = 5 V, Switching "X"

2.1

VSHDN = 5 V, Switching "X",

3.0

−40°C ≤ TJ ≤ +125°C

VSHDN = 5 V, Switching "Y"

1.1

VSHDN = 5 V, Switching "Y",

−40°C ≤ TJ ≤ +125°C

VSHDN = 5 V, Not Switching

400

VSHDN = 5 V, Not Switching,

500

µA

−40°C ≤ TJ ≤ +125°C

VSHDN = 0

0.024

Δ VFBΔVIN

FB Voltage Line Regulation

2.7 V

≤ VIN ≤ 14 V

0.02

%/V

(1)

Limits are specified by testing, statistical correlation, or design.

(2)

Typical values are derived from the mean value of a large quantity of samples tested during characterization and represent the most

likely expected value of the parameter at room temperature.

(3)

Switch current limit is dependent on duty cycle (see Typical Performance Characteristics). Limits shown are for duty cycles

≤ 50%.

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