LM2682 datasheet(2/15 Pages) TI

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LM2682

SNVS044B – NOVEMBER 1999 – REVISED MAY 2013

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Absolute Maximum Ratings

(1)

Input Voltage (VIN)

+5.8V

VIN dV/dT

1V/

μsec

VOUT

−11.6V

VOUT Short-Circuit Duration

Continuous

Storage Temperature

−65°C to +150°C

Lead Temperature Soldering

+300°C

VSSOP

300 mW

Power Dissipation(2)

SOIC

470 mW

TJMAX

+150°C

(1)

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Operating Ratings indicate conditions for

which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test

conditions, see the Electrical Characteristics.

(2)

The maximum power dissipation must be de-rated at elevated temperatures (only needed for TA>85°C) and is limited by TJMAX

(maximum junction temperature),

θJ-A (junction to ambient thermal resistance) and TA (ambient temperature). θJ-A is 140°C/W for the

SOIC-8 package and 220°C/W for the VSSOP-8 package. The maximum power dissipation at any temperature is:PDissMAX = (TJMAX −

TA)/θJ-A up to the value listed in the Absolute Maximum Ratings.

Operating Ratings

Human Body Model

2 kV

ESD Susceptibility(1)

Machine Model

200V

Ambient Temp. Range

−40°C to +85°C

Junction Temp. Range

−40°C to +125°C

(1)

The human body model is a 100 pF capacitor discharged through a 1.5 k

Ω resistor into each pin. The machine model is a 200pF

capacitor discharged directly into each pin.

LM2682

Electrical Characteristics

VIN = 5V and C1 = C2 = C3 = 3.3μF unless otherwise specified. Limits with bold typeface apply over the full operating ambient

temperature range,

−40°C to +85°C, limits with standard typeface apply for TA = 25°C.

Symbol

Parameter

Conditions

Min

Typical(1)

Max

Units

VIN

Supply Voltage Range

RL = 2 kΩ

2.0

5.5

IIN

Supply Current

Open Circuit, No Load

150

300

μA

400

ROUT

VOUT Source Resistance

IL = 10 mA

150

Ω

200

IL=5 mA, VIN=2 V

110

250

Ω

fOSC

Oscillator Frequency

See(2)

kHz

fSW

Switching Frequency

See(2)

kHz

ηPOWER

Power Efficiency

RL = 2k

(3)

ηVOLTAGE

Voltage Conversion Efficiency

99.9

(1)

Typical numbers are at 25°C and represent the most likely norm.

(2)

The output switches operate at one half of the oscillator frequency, fOSC = 2fSW.

(3)

The minimum specification is specified by design and is not tested.

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