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LM2662 Datasheet(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2662
Description  Switched Capacitor Voltage Converter
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM2662 Datasheet(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, SD
The least negative of (OUT − 0.3V)
or (V+ − 6V) to (V+ + 0.3V)
V+ and OUT Continuous Output Current
250 mA
Output Short-Circuit Duration to GND (Note 2)
1 sec.
Power Dissipation (T
A = 25˚C) (Note 3)
735 mW
T
J Max (Note 3)
150˚C
θ
JA (Note 3)
170˚C/W
Operating Junction Temperature
Range
−40˚C to +85˚C
Storage Temperature Range
−65˚C to +150˚C
Lead Temperature (Soldering, 10 seconds)
300˚C
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.
Unless otherwise specified: V+ = 5V, FC = Open, C
1 =C2 = 47 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 = V+ (LM2662)
1.3
4
mA
LV = Open
SD = Ground (LM2663)
FC = Open
0.3
0.8
I
SD
Shutdown Supply Current
10
µA
(LM2663)
V
SD
Shutdown Pin Input Voltage
Shutdown Mode
2.0
(Note 5)
V
(LM2663)
Normal Operation
0.3
I
L
Output Current
200
mA
R
OUT
Output Resistance (Note 6)
I
L = 200 mA
3.5
7
f
OSC
Oscillator Frequency (Note 7)
OSC = Open
FC = Open
7
20
kHz
FC=V+
55
150
f
SW
Switching Frequency (Note 8)
OSC = Open
FC = Open
3.5
10
kHz
FC=V+
27.5
75
I
OSC
OSC Input Current
FC = Open
±2
µA
FC=V+
±10
P
EFF
Power Efficiency
R
L (500) between V
+ and OUT
90
96
%
I
L = 200 mA to GND
86
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 47 µF, 0.2Ω maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce output
voltage 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 LM2663, the oscillator frequency is 150 kHz.
Note 8: The output switches operate at one half of the oscillator frequency, fOSC = 2fSW.
www.national.com
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