LM2736 datasheet(4/27 Pages) TI1

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LM2736

SNVS316E – SEPTEMBER 2004 – REVISED SEPTEMBER 2011

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Electrical Characteristics

Specifications with standard typeface are for TJ = 25°C, and those in boldface type apply over the full Operating

Temperature Range (TJ = -40°C to 125°C). VIN = 5V, VBOOST - VSW = 5V unless otherwise specified. Datasheet min/max

specification limits are guaranteed by design, test, or statistical analysis.

Min

Typ

Max

Symbol

Parameter

Conditions

Units

(1)

(2)

(1)

VFB

Feedback Voltage

1.225

1.250

1.275

ΔVFB/ΔVIN

Feedback Voltage Line Regulation

VIN = 3V to 18V

0.01

% / V

IFB

Feedback Input Bias Current

Sink/Source

250

Undervoltage Lockout

VIN Rising

2.74

2.90

UVLO

Undervoltage Lockout

VIN Falling

2.0

2.3

UVLO Hysteresis

0.30

0.44

0.62

LM2736X

1.2

1.6

1.9

FSW

Switching Frequency

MHz

LM2736Y

0.40

0.55

0.66

LM2736X

DMAX

Maximum Duty Cycle

LM2736Y

LM2736X

DMIN

Minimum Duty Cycle

LM2736Y

RDS(ON)

Switch ON Resistance

VBOOST - VSW = 3V

350

650

Ω

ICL

Switch Current Limit

VBOOST - VSW = 3V

1.0

1.5

2.3

Quiescent Current

Switching

1.5

2.5

Quiescent Current (shutdown)

VEN = 0V

LM2736X (50% Duty Cycle)

2.2

3.3

IBOOST

Boost Pin Current

LM2736Y (50% Duty Cycle)

0.9

1.6

Shutdown Threshold Voltage

VEN Falling

0.4

VEN_TH

Enable Threshold Voltage

VEN Rising

1.8

IEN

Enable Pin Current

Sink/Source

ISW

Switch Leakage

(1)

Guaranteed to National’s Average Outgoing Quality Level (AOQL).

(2)

Typicals represent the most likely parametric norm.

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