LM2661MM NSC [National Semiconductor], LM2661MM Datasheet - Page 2

• Manufacturer Part Number: LM2661MM
• Description: Switched Capacitor Voltage Converter
• Manufacturer: NSC [National Semiconductor]

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V+
I
I
V
I
R
f
f
I
P
V
Symbol
Q
SD
L
OSC
SW
OSC
Electrical Characteristics
Limits in standard typeface are for T
less otherwise specified: V+ = 5V, FC = Open, C
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 P
ambient temperature, and
Note 4: In the test circuit, capacitors C
age and efficiency.
Note 5: In doubling mode, when V
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, f
SD
EFF
OEFF
Absolute Maximum Ratings
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)
LV
FC, OSC
V+ and OUT Continuous Output Current
Output Short-Circuit Duration to GND (Note 2)
OUT
Supply Voltage
Supply Current
Shutdown Supply Current
(LM2661)
Shutdown Pin Input Voltage
(LM2661)
Output Current
Output Resistance (Note 6)
Oscillator Frequency (Note 7)
Switching Frequency (Note 8)
OSC Input Current
Power Efficiency
Voltage Conversion Efficiency
Parameter
JA
is the junction-to-ambient thermal resistance of the specified package.
The least negative of (OUT − 0.3V)
out
>
1
and C
5V, minimum input high for shutdown equals V
(OUT − 0.3V) to (GND + 3V)
or (V+ − 6V) to (V+ + 0.3V)
J
2
are 0.2 maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce output volt-
= 25˚C, and limits in boldface type apply over the full operating temperature range. Un-
FC = V+
R
No Load
LV = Open
Shutdown Mode
Normal Operation
T
T
I
OSC = Open
OSC = Open
FC = Open
R
R
I
No Load
(Note 1)
L
L
A
A
L
L
L
1
= 100 mA
= 100 mA to GND
= 1k
>
(1k) between V
(500) between GND and OUT
= C
+85˚C, OUT
+85˚C, OUT
120 mA
2
1 sec.
= 150 µF. (Note 4)
6V
DMax
OSC
2
Condition
= (T
= 2f
Inverter, LV = Open
Inverter, LV = GND
Doubler, LV = OUT
FC = Open (LM2660)
FC = V+ (LM2660) or
SD = Ground (LM2661)
T
T
FC = Open
FC = V+
FC = Open
FC = V+
+
A
A
Power Dissipation
T
Operating Junction
Temperature
Storage Temperature Range
Lead Temperature
ESD Rating
−4V
JMax
and OUT
SW
−3.8V
JA
J
>
out
(T
Range
(Soldering, 10 seconds)
.
Max (Note 3)
+85˚C
(Note 3)
+85˚C
− T
− 3V.
A
= 25˚C) (Note 3)
A
)/
JA
, where T
JMax
is the maximum junction temperature, T
Min
100
100
3.5
1.5
2.5
2.0
2.5
40
20
96
92
99
5
170˚C/W
735 mW
150˚C
(Note 5)
99.96
M
0.12
Typ
±
0.5
6.5
10
80
40
±
98
96
88
1
5
16
2
Package
−65˚C to +150˚C
−40˚C to +85˚C
Max
5.5
5.5
5.5
0.5
0.3
10
12
3
2
250˚C/W
500 mW
150˚C
MM
A
is the
Units
300˚C
kHz
kHz
mA
mA
2 kV
µA
µA
%
%
V
V