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LM2611AMF Scheda tecnica(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Il numero della parte LM2611AMF
Spiegazioni elettronici  1.4MHz Cuk Converter
Download  13 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2611AMF Scheda tecnica(HTML) 3 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
14.5V
SW Voltage
−0. 4V to 36V
NFB Voltage
+0. 4V to −6V
SHDN Voltage
−0. 4V to 14.5V
Maximum Junction
Temperature
125˚C
Power Dissipation (Note 2)
Internally Limited
Lead Temperature
300˚C
ESD Susceptibility (Note 3)
Human Body Model
2kV
Machine Model
200V
Operating Conditions
Operating Junction
Temperature Range
(Note 4)
−40˚C to +125˚C
Storage Temperature
−65˚C to +150˚C
Supply Voltage
2.7V to 14V
θ
JA
256˚C/W
Electrical Characteristics
Specifications in standard type face are for T
J = 25˚C and those with boldface type apply over the full Operating Tempera-
ture Range (T
J = −40˚C to +85˚C) unless otherwise specified. VIN = 5.0V and IL = 0A, unless otherwise specified.
Symbol
Parameter
Conditions
Min
(Note 4)
Typ
(Note 5)
Max
(Note 4)
Units
V
IN
Input Voltage
2.7
14
V
I
SW
Switch Current Limit
Grade A
1
1.2
2
A
Grade B
0.7
0.9
R
DSON
Switch ON Resistance
Grade A
0.5
0.65
Grade B
0.7
0.9
SHDN
TH
Shutdown Threshold
Device enabled
1.5
V
Device disabled
0.50
I
SHDN
Shutdown Pin Bias Current
V
SHDN = 0V
0.0
µA
V
SHDN = 5V
0.0
1.0
NFB
Negative Feedback
Reference
V
IN =3V
−1.205
−1.23
−1.255
V
I
NFB
NFB Pin Bias Current
V
NFB =−1.23V
−2.7
−4.7
−6.7
µA
I
q
Quiescent Current
V
SHDN = 5V, Switching
1.8
3.5
mA
V
SHDN = 5V, Not Switching
270
500
µA
V
SHDN = 0V
0.024
1
µA
%V
OUT/
∆V
IN
Reference Line Regulation
2.7V
≤ V
IN ≤ 14V
0.02
%/V
f
S
Switching Frequency
1.0
1.4
1.8
MHz
D
MAX
Maximum Duty Cycle
82
88
%
I
L
Switch Leakage
Not Switching
V
SW =5V
1µA
Note 1: Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended to
be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(MAX), the junction-to-ambient thermal resistance, θJA,
and the ambient temperature, TA. See the Electrical Characteristics table for the thermal resistance of various layouts. The maximum allowable power dissipation
at any ambient temperature is calculated using: PD (MAX) = (TJ(MAX) −TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die
temperature, and the regulator will go into thermal shutdown.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5k
Ω resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin.
Note 4: All limits guaranteed at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are 100% tested
or guaranteed through statistical analysis. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods.
All limits are used to calculate Average Outgoing Quality Level (AOQL).
Note 5: Typical numbers are at 25˚C and represent the expected value of the parameter.
www.national.com
3


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