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參數(shù)資料
| 型號： | LM2682MWC |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, 15 kHz SWITCHING FREQ-MAX, UUC |
| 封裝： | WAFER |
| 文件頁數(shù)： | 2/9頁 |
| 文件大小： | 178K |
| 代理商： | LM2682MWC |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage (V
IN)
+5.8V
V
IN dV/dT
1V/sec
V
OUT
11.6V
V
OUT Short-Circuit Duration
Continuous
Storage Temperature
65C to +150C
Lead Temperature Soldering
+300C
Power Dissipation (Note 2)
MSOP-8
300 mW
SO-8
470 mW
T
JMAX
+150C
Operating Ratings
ESD Susceptibility (Note 3)
Human Body Model
Machine Model
2kV
200V
Ambient Temp. Range
40C to +85C
Junction Temp. Range
40C to +125C
LM2682
Electrical Characteristics V
IN = 5V and C1 = C2 = C3 = 3.3F unless otherwise specified. Limits with bold
typeface apply over the full operating ambient temperature range, 40C to +85C, limits with standard typeface apply for T
A
= 25C.
Symbol
Parameter
Conditions
Min
Typical
(Note 4)
Max
Units
V
IN
Supply Voltage Range
R
L = 2k
2.0
5.5
V
I
IN
Supply Current
Open Circuit, No Load
150
300
400
A
R
OUT
V
OUT Source Resistance
I
L = 10 mA
90
150
200
I
L=5 mA, VIN=2 V
110
250
f
OSC
Oscillator Frequency
(Note 5)
12
30
kHz
f
SW
Switching Frequency
(Note 5)
6
15
kHz
η
POWER
Power Efficiency
R
L = 2k (Note 6)
90
93
%
η
VOLTAGE
Voltage Conversion Efficiency
99.9
%
Note 1: Absolute Maximum Ratings are those values beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The maximum power dissipation must be de-rated at elevated temperatures (only needed for TA>85C) and is limited by TJMAX (maximum junction tempera-
ture),
θJ-A (junction to ambient thermal resistance) and TA (ambient temperature). θJ-A is 140C/W for the SO-8 package and 220C/W for the MSOP-8 package. The
maximum power dissipation at any temperature is:
PDissMAX = (TJMAX TA)/θJ-A up to the value listed in the Absolute Maximum Ratings.
Note 3: 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 di-
rectly into each pin.
Note 4: Typical numbers are at 25C and represent the most likely norm.
Note 5: The output switches operate at one half of the oscillator frequency, fOSC = 2fSW.
Note 6: The minimum specification is guaranteed by design and is not tested.
Pin Description
Pin Number
Symbol
Description
1C
1
Capacitor C
1 negative terminal
2C
2+
Capacitor C
2 positive terminal
3C
2
Capacitor C
2 negative terminal
4V
OUT
Negative output voltage (2V
IN)
5
GND
Device ground
6V
IN
Power supply voltage
7C
1+
Capacitor C
1 positive terminal
8
NC
No Connection
LM2682
www.national.com
2
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