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參數(shù)資料
| 型號： | LM2760M5 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | ER 3C 3#12 PIN PLUG |
| 中文描述： | SWITCHED CAPACITOR REGULATOR, 750 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 3/10頁 |
| 文件大?。?/td> | 242K |
| 代理商： | LM2760M5 |
Absolute Maximum Ratings
2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Notes 1,
V
IN
Pin: Voltage to GND
Junction Temperature (T
J-MAX-ABS
)
Continuous Power Dissipation
(Note 3)
V
OUT
Short-Circuit to GND Duration
(Note 4)
Storage Temperature Range
Lead Temperature
(Soldering, 5 sec.)
ESD Rating (Note 5)
Human-body model:
Machine model
0.3V to 6V
150C
Internally Limited
Unlimited
-65C to 150C
260C
2 kV
200 V
Operating Ratings
(Notes 1, 2)
Input Voltage Range
Recommended Output Current
2.5V
≤
V
IN
≤
4.4V
2.0V
≤
V
IN
≤
2.5V
Junction Temperature (T
J
) Range
Ambient Temperature (T
A
) Range
(Note 6)
2.0V to 4.4V
0mA to 20mA
0mA to 10mA
-40C to 100C
-40C to 85C
Thermal Information
Junction-to-Ambient Thermal
Resistance (
θ
JA
), SOT23-5
Package(Note 7)
220C/W
Electrical Characteristics
Typical values and limits in standard typeface apply for T
J
= 25
o
C. Limits in boldface type apply over the operating junction
temperature range 0
o
C
≤
T
J
≤
+ 85
o
C [0
o
C
≤
T
A
≤
+ 70
o
C (Note 9)] Unless otherwise specified: C
IN
= 4.7μF, C
FLY
= 0.1μF,
C
OUT
= 10μF(Note 10)
Symbol
Parameter
V
OUT
Output Voltage
2.5V
≤
V
IN
≤
4.4V,
0mA
≤
I
OUT
≤
20mA
2.0V
≤
V
IN
≤
4.4V,
0mA
≤
I
OUT
≤
10mA
I
Q
Quiescent Supply Current
2.0V
≤
V
IN
≤
4.4V, V
OUT
tied to
3.5V, unloaded (Note 11)
I
IN
Normal Operation Supply
Current
Time-averaged (Note 12)
f
OSC
Oscillator Frequency
V
IN
= 3.0V
V
p-p
Output Ripple Voltage
V
IN
= 3.0V, I
OUT
= 10mA
t
ON
V
OUT
Turn-On Time
V
IN
= 3.0V (Note 13)
I
SC
Output Short Circuit Current
V
IN
= 3.0V
(Notes 2, 8)
Conditions
Min
3.17
Typ
3.3
Max
3.43
Units
V
3.17
3.3
3.43
V
6
12
μA
2.0V
≤
V
IN
≤
4.4V, unloaded,
10
μA
750
60
1
170
kHz
mV
p-p
ms
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 V
IN
≤
4.4V
Note 5:
: The human-body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin.
Note 6:
Maximum ambient temperature (T
A-MAX
) is dependent on the maximum operating junction temperature (T
J-MAX-OP
= 100
o
C), the maximum power
dissipation of the device in the application (P
D-MAX
), and the junction-to-ambient thermal resistance of the part/package in the application (
θ
JA
), as given by the
following equation: T
A-MAX
= T
J-MAX-OP
- (
θ
JA
x P
D-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 (T
A-MAX
) of 85
o
C is calculated using
θ
JA
= 220
o
C/W and P
D-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 (
θ
JA
) 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 22C, still air. Power dissipation is 1W. Junction-to-ambient thermal resistance is a highly application-specific
parameter. The value of
θ
JA
of the LM2760 could fall in a range as wide as 150
o
C/W to 250
o
C/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 P
of 70mW and
θ
of 220
o
C/W (see Note 6), the ambient temperature range of 0
o
C-to-70
o
C is provided for convenience and is calculated from
the 0
o
C-to-85
o
C junction temperature range that is used in determining guaranteed limits.
Note 10:
C
FLY
, C
IN
, and C
OUT
: Low-ESR Surface-Mount Ceramic Capacitors (MLCCs) used in setting electrical characteristics
L
www.national.com
3
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