LM2760 datasheet(3/10 Pages) NSC

3 / 10 page

Absolute Maximum Ratings (Notes 1,

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

IN Pin: Voltage to GND

−0.3V to 6V

Junction Temperature (T

J-MAX-ABS)

150˚C

Continuous Power Dissipation

Internally Limited

(Note 3)

OUT Short-Circuit to GND Duration

Unlimited

(Note 4)

Storage Temperature Range

-65˚C to 150˚C

Lead Temperature

260˚C

(Soldering, 5 sec.)

ESD Rating (Note 5)

Human-body model:

Machine model

2kV

200 V

Operating Ratings

(Notes 1, 2)

Input Voltage Range

2.0V to 4.4V

Recommended Output Current

2.5V

≤ V

≤ 4.4V

0mA to 20mA

2.0V

≤ V

≤ 2.5V

0mA to 10mA

Junction Temperature (T

J) Range

-40˚C to 100˚C

Ambient Temperature (T

A) Range

(Note 6)

-40˚C to 85˚C

Thermal Information

Junction-to-Ambient Thermal

220˚C/W

Resistance (

JA), SOT23-5

Package(Note 7)

Electrical Characteristics

(Notes 2, 8)

Typical values and limits in standard typeface apply for T

J =25

oC. Limits in boldface type apply over the operating junction

temperature range 0oC

≤ T

≤ +85oC[0oC ≤ T

≤ +70oC (Note 9)] Unless otherwise specified: C

IN = 4.7µF, CFLY = 0.1µF,

OUT = 10µF(Note 10)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

OUT

Output Voltage

2.5V

≤ V

≤ 4.4V,

0mA

≤ I

OUT

≤ 20mA

3.17

3.3

3.43

2.0V

≤ V

≤ 4.4V,

0mA

≤ I

OUT

≤ 10mA

3.17

3.3

3.43

Quiescent Supply Current

2.0V

≤ V

≤ 4.4V, V

OUT tied to

3.5V, unloaded (Note 11)

µA

Normal Operation Supply

Current

2.0V

≤ V

≤ 4.4V, unloaded,

Time-averaged (Note 12)

µA

OSC

Oscillator Frequency

IN = 3.0V

750

kHz

p-p

Output Ripple Voltage

IN= 3.0V, IOUT = 10mA

p-p

OUT Turn-On Time

IN= 3.0V (Note 13)

Output Short Circuit Current

IN= 3.0V

170

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of

the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the

Electrical Characteristics tables.

Note 2: All voltages are with respect to the potential at the GND pin.

Note 3: Thermal shutdown circuitry protects the device from permanent damage.

Note 4: Excessive power dissipation will occur if the part is shorted to ground. Internal thermal shutdown will protect the device from permanent damage, but

thermal cycling of the part is likely to occur until the short is removed. Protection is guaranteed only for VIN ≤ 4.4V

Note 5: : 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.

Note 6: Maximum ambient temperature (TA-MAX) is dependent on the maximum operating junction temperature (TJ-MAX-OP = 100

oC), the maximum power

dissipation of the device in the application (PD-MAX), and the junction-to-ambient thermal resistance of the part/package in the application (θJA), as given by the

following equation: TA-MAX =TJ-MAX-OP -(θJA xPD-MAX). When application conditions are within the specified operating ratings, maximum power dissipation of the

LM2760 is 70mW. This occurs when the output current is 20mA and the input voltage is 3.4V (edge of the "doubler" region). The maximum ambient temperature

operating rating (TA-MAX)of85

oC is calculated using

θJA = 220oC/W and PD-MAX = 70mW. For more information on these topics, please refer to the Power

Dissipation section of this datasheet.

Note 7: Junction-to-ambient thermal resistance (

θJA) of the SOT23-5 package is taken from a thermal modeling result, performed under the conditions and

guidelines set forth in the JEDEC standard JESD51-3. The test board is a 2-layer FR-4 board measuring 230mm x 125mm x 1.6mm. Thickness of the copper layers

is 18mm (1.0oz). Ambient temperature in simulation is 22˚C, still air. Power dissipation is 1W. Junction-to-ambient thermal resistance is a highly application-specific

parameter. The value of

θJA of the LM2760 could fall in a range as wide as 150oC/W to 250oC/W (if not wider), depending on PCB and application conditions.

Note 8: : All room temperature limits are 100% tested or guaranteed through statistical analysis. All limits at temperature extremes are guaranteed by correlation

using standard Statistical Quality Control methods (SQC). All limits are used to calculate Average Outgoing Quality Level (AOQL). Typical numbers are not

guaranteed, but do represent the most likely norm.

Note 9: With PD-MAX of 70mW and θJA of 220

oC/W (see Note 6), the ambient temperature range of 0oC-to-70oC is provided for convenience and is calculated from

the 0oC-to-85oC junction temperature range that is used in determining guaranteed limits.

Note 10: CFLY,CIN, and COUT : Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) used in setting electrical characteristics

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