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LM2660M 数据表(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部件名 LM2660M
功能描述  Switched Capacitor Voltage Converter
Download  12 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LM2660M 数据表(HTML) 2 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.
Supply Voltage (V+ to GND, or GND to OUT)
6V
LV
(OUT − 0.3V) to (GND + 3V)
FC, OSC
The least negative of (OUT − 0.3V)
or (V+ − 6V) to (V+ + 0.3V)
V+ and OUT Continuous Output Current
120 mA
Output Short-Circuit Duration to GND (Note 2)
1 sec.
Package
MMM
Power Dissipation
(T
A = 25˚C) (Note 3)
735 mW
500 mW
T
J Max (Note 3)
150˚C
150˚C
θ
JA (Note 3)
170˚C/W
250˚C/W
Operating Junction
Temperature
Range
−40˚C to +85˚C
Storage Temperature Range
−65˚C to +150˚C
Lead Temperature
300˚C
(Soldering, 10 seconds)
ESD Rating
2 kV
Electrical Characteristics
Limits in standard typeface are for T
J = 25˚C, and limits in boldface type apply over the full operating temperature range. Un-
less otherwise specified: V+ = 5V, FC = Open, C
1 = C2 = 150 µF. (Note 4)
Symbol
Parameter
Condition
Min
Typ
Max
Units
V+
Supply Voltage
R
L = 1k
Inverter, LV = Open
3.5
5.5
Inverter, LV = GND
1.5
5.5
V
Doubler, LV = OUT
2.5
5.5
I
Q
Supply Current
No Load
FC = Open (LM2660)
0.12
0.5
mA
LV = Open
FC = V+ (LM2660) or
1
3
SD = Ground (LM2661)
I
SD
Shutdown Supply Current
0.5
2
µA
(LM2661)
V
SD
Shutdown Pin Input Voltage
Shutdown Mode
2.0
(Note 5)
V
(LM2661)
Normal Operation
0.3
I
L
Output Current
T
A ≤ +85˚C, OUT ≤ −4V
100
mA
T
A > +85˚C, OUT ≤ −3.8V
100
R
OUT
Output Resistance (Note 6)
I
L = 100 mA
T
A ≤ +85˚C
6.5
10
T
A > +85˚C
12
f
OSC
Oscillator Frequency (Note 7)
OSC = Open
FC = Open
5
10
kHz
FC = V+
40
80
f
SW
Switching Frequency (Note 8)
OSC = Open
FC = Open
2.5
5
kHz
FC = V+
20
40
I
OSC
OSC Input Current
FC = Open
±2
µA
FC = V+
±16
P
EFF
Power Efficiency
R
L (1k) between V
+ and OUT
96
98
R
L (500) between GND and OUT
92
96
%
I
L = 100 mA to GND
88
V
OEFF
Voltage Conversion Efficiency
No Load
99
99.96
%
Note 1: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
beyond its rated operating conditions.
Note 2: OUT may be shorted to GND for one second without damage. However, shorting OUT to V+ may damage the device and should be avoided. Also, for tem-
peratures above 85˚C, OUT must not be shorted to GND or V+, or device may be damaged.
Note 3: The maximum allowable power dissipation is calculated by using PDMax = (TJMax −TA)/θJA, where TJMax is the maximum junction temperature, TA is the
ambient temperature, and
θJA is the junction-to-ambient thermal resistance of the specified package.
Note 4: In the test circuit, capacitors C1 and C2 are 0.2Ω maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce output volt-
age and efficiency.
Note 5: In doubling mode, when Vout > 5V, minimum input high for shutdown equals Vout −3V.
Note 6: Specified output resistance includes internal switch resistance and capacitor ESR.
Note 7: For LM2661, the oscillator frequency is 80 kHz.
Note 8: The output switches operate at one half of the oscillator frequency, fOSC = 2fSW.
www.national.com
2


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