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LM2760 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. LM2760
Description  3.3V Regulated Switched Capacitor Voltage Converter
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM2760 Datasheet(HTML) 3 Page - National Semiconductor (TI)

 
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Absolute Maximum Ratings (Notes 1,
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN Pin: Voltage to GND
−0.3V to 6V
Junction Temperature (T
J-MAX-ABS)
150˚C
Continuous Power Dissipation
Internally Limited
(Note 3)
V
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
IN
≤ 4.4V
0mA to 20mA
2.0V
≤ V
IN
≤ 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 (
θ
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
J
≤ +85oC[0oC ≤ T
A
≤ +70oC (Note 9)] Unless otherwise specified: C
IN = 4.7µF, CFLY = 0.1µF,
C
OUT = 10µF(Note 10)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OUT
Output Voltage
2.5V
≤ V
IN
≤ 4.4V,
0mA
≤ I
OUT
≤ 20mA
3.17
3.3
3.43
V
2.0V
≤ V
IN
≤ 4.4V,
0mA
≤ I
OUT
≤ 10mA
3.17
3.3
3.43
V
I
Q
Quiescent Supply Current
2.0V
≤ V
IN
≤ 4.4V, V
OUT tied to
3.5V, unloaded (Note 11)
6
12
µA
I
IN
Normal Operation Supply
Current
2.0V
≤ V
IN
≤ 4.4V, unloaded,
Time-averaged (Note 12)
10
µA
f
OSC
Oscillator Frequency
V
IN = 3.0V
750
kHz
V
p-p
Output Ripple Voltage
V
IN= 3.0V, IOUT = 10mA
60
mV
p-p
t
ON
V
OUT Turn-On Time
V
IN= 3.0V (Note 13)
1
ms
I
SC
Output Short Circuit Current
V
IN= 3.0V
170
mA
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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