LM3405AXMY datasheet(4/32 Pages) TI

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LM3405A

SNVS508C – OCTOBER 2007 – REVISED MAY 2013

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ELECTRICAL CHARACTERISTICS

Unless otherwise specified, VIN = 12V. Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the

junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are specified through test, design, or

statistical correlation. Typical values represent the most likely parametric norm, and are provided for reference purposes only.

Parameter

Test Conditions

Min

Typ

Max

Units

VFB

Feedback Voltage

0.188

0.205

0.220

ΔVFB/(ΔVINxVFB)

Feedback Voltage Line Regulation

VIN = 3V to 22V

0.01

%/V

IFB

Feedback Input Bias Current

Sink/Source

250

Under-voltage Lockout

VIN Rising

2.74

2.95

UVLO

Under-voltage Lockout

VIN Falling

1.9

2.3

UVLO Hysteresis

0.44

fSW

Switching Frequency

1.2

1.6

1.9

MHz

DMAX

Maximum Duty Cycle

VFB = 0V

SOT (VBOOST - VSW = 3V)

300

600

RDS(ON)

Switch ON Resistance

Ω

MSOP (VBOOST - VSW = 3V)

360

700

ICL

Switch Current Limit

VBOOST - VSW = 3V, VIN = 3V

1.2

2.0

2.8

Quiescent Current

Switching, VFB = 0.195V

1.8

2.8

Quiescent Current (Shutdown)

VEN/DIM = 0V

0.3

µA

Enable Threshold Voltage

VEN/DIM Rising

1.8

VEN/DIM_TH

Shutdown Threshold Voltage

VEN/DIM Falling

0.4

IEN/DIM

EN/DIM Pin Current

Sink/Source

0.01

µA

ISW

Switch Leakage

VIN = 22V

0.1

µA

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