LM2682MM datasheet(2/7 Pages) NSC

2 / 7 page

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Input Voltage (V

IN)

+5.8V

IN dV/dT

1V/µsec

OUT

−11.6V

OUT Short-Circuit Duration

Continuous

Storage Temperature

−65˚C to +150˚C

Lead Temperature Soldering

+300˚C

Power Dissipation (Note 2)

MSOP-8

300 mW

SO-8

470 mW

JMAX

+150˚C

Operating Ratings

ESD Susceptibility (Note 3)

Human Body Model

Machine Model

2kV

200V

Ambient Temp. Range

−40˚C to +85˚C

Junction Temp. Range

−40˚C to +125˚C

LM2682

Electrical Characteristics V

IN = 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 T

= 25˚C.

Symbol

Parameter

Conditions

Min

Typical

(Note 4)

Max

Units

Supply Voltage Range

L = 2kΩ

2.0

5.5

Supply Current

Open Circuit, No Load

150

300

400

µA

OUT

OUT Source Resistance

L = 10 mA

150

Ω

200

L=5 mA, VIN=2 V

110

250

Ω

OSC

Oscillator Frequency

(Note 5)

kHz

Switching Frequency

(Note 5)

kHz

POWER

Power Efficiency

L = 2k (Note 6)

VOLTAGE

Voltage Conversion Efficiency

99.9

Note 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 guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.

Note 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 tempera-

ture),

θJ-A (junction to ambient thermal resistance) and TA (ambient temperature). θJ-A is 140˚C/W for the SO-8 package and 220˚C/W for the MSOP-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.

Note 3: 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 di-

rectly into each pin.

Note 4: Typical numbers are at 25˚C and represent the most likely norm.

Note 5: The output switches operate at one half of the oscillator frequency, fOSC = 2fSW.

Note 6: The minimum specification is guaranteed by design and is not tested.

Pin Description

Pin Number

Symbol

Description

1−

Capacitor C

1 negative terminal

Capacitor C

2 positive terminal

2−

Capacitor C

2 negative terminal

OUT

Negative output voltage (−2V

IN)

GND

Device ground

Power supply voltage

Capacitor C

1 positive terminal

No Connection

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