lm2781tpx National Semiconductor Corporation, lm2781tpx Datasheet - Page 3

• Manufacturer Part Number: lm2781tpx
• Description: Ultra-low Ripple Switched Capacitor Voltage Inverter
• Manufacturer: National Semiconductor Corporation

R
I
I
F
V
V
P
Q
SD
Symbol
SW
SD
OUTp-p
EFF
OUT
Absolute Maximum Ratings
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard typface are for T
range (-40˚C ≤ T
V
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 table.
Note 2: All voltages are with respect to the potential at the GND pin.
Note 3: V
to GND may damage the device, and should be avoided.
Note 4: The human-body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin.
Note 5: Maximum ambient temperature (T
of the device in the application (P
= T
Note 6: Junction-to-ambient thermal resistance of the micro SMD package is highly application and board-layout dependent.
Note 7: Max and Min limits are guaranteed by design, test, or statistical analysis. Typical numbers are not guaranteed, but do represent the most likely norm.
Note 8: C
Note 9: Output resistance is a model for the voltage drop at the output, resulting from internal switch resistance, capacitor ESR, and charge pump charge transfer
characteristics. Output voltage can be predicted with the following equation: V
V
SD pin: Voltage to GND
Output Short-to-GND Duration
Maximum Junction Temperature
Storage Temperature Range
Pad Temperature
IN
IN
J-MAX-OP
(Note 3)
(T
(Soldering, 10 sec.)
= 5.0V, V(SD) = 0V, and C
pin: Voltage to GND
J-MAX
OUT
IN
Output Resistance
(Note 9)
Supply Current
Shutdown Supply Current
Switching Frequency
Shutdown Pin Logic Levels
Output Voltage Ripple
Power Efficiency
, C
- (θ
)
may be shorted to GND for one second without damage when the ambient temperature is at or below 85˚C. Prolonged or repeated shorts of V
OUT
JA
, C1, and C2: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) used in setting electrical characteristics.
x P
J
D-MAX
Parameter
≤ +90˚C). Unless otherwise noted: specifications apply to the LM2781 Typical Application Circuit (pg. 1) with
).
D-MAX
), and the junction-to-ambient thermal resistance of the part in the application (θ
IN
A-MAX
= C
J
= 25˚C, and limits in boldface type apply over the full operating junction temperature
OUT
) is dependent on the maximum operating junction temperature (T
I
I
No load
V(SD) = 5.0V
Normal Operation
1.8V ≤ V
Shutdown Mode
1.8V ≤ V
V
V
OUT
OUT
IN
IN
(V
= C1 = C2 = 1µF. (Note 8)
-65˚C to +150˚C
IN
= 5.0V, I
= 5.0V, I
= 10mA, C2 = 1µF
= 10mA, C2 removed
−0.3V to 5.8V
(Notes 2, 7)
+ 0.3V), with
(Notes 1,
IN
IN
5.8V max
-0.3V to
≤ 5.5V
≤ 5.5V
OUT
OUT
1 sec.
150˚C
265˚C
Conditions
= 10mA
= 10mA
OUT
3
= -[V
Operating Ratings
Thermal Properties
ESD Rating (Note 4)
Input Voltage Range
Junction Temperature (T
Ambient Temperature (T
(Note 5)
Junction-to-Ambient Thermal
Resistance (θ
(Note 6)
IN
Human-body model
Machine model
- (I
OUT
x R
OUT
JA
)]
), TPA08 Package
0.5xV
J-MAX-OP
Min
100
0
JA
A
J
IN
), as given by the following equation: T
) Range
) Range
= 90˚C), the maximum power dissipation
(Notes 1, 2)
Typ
210
0.7
0.1
18
10
92
8
-40˚C to +90˚C
-40˚C to +85˚C
Max
400
1.4
0.5
0.5
V
30
40
IN
1.8V to 5.5V
www.national.com
220˚C/W
200V
Units
2kV
kHz
A-MAX
mA
mV
µA
%
Ω
Ω
V
OUT