Datasheet

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.
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 Temp. 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
=
C
2
=
150 µF. (Note 4)
Symbol Parameter Condition Min Typ Max Units
V+ Supply Voltage R
L
=
1k Inverter, LV
=
Open
(Note 5)
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 0.12 0.5
mALV
=
Open FC
=
V+
1 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
Ω
T
A
>
+85˚C 12
F
OSC
Oscillator Frequency OSC
=
Open FC
=
Open 5 10
kHz
FC
=
V+ 40 80
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
(500Ω) 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 P
DMax
=
(T
JMax
−T
A
)/θ
JA
, where T
JMax
is the maximum junction temperature, T
A
is the
ambient temperature, and θ
JA
is the junction-to-ambient thermal resistance of the specified package.
Note 4: In the test circuit, capacitors C
1
and C
2
are 0.2Ω maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce output volt-
age and efficiency.
Note 5: The minimum limit for this parameter is different from the limit of 3.0V for the industry-standard “660” product. For inverter operation with supply voltage be-
low 3.5V, connect the LV pin to GND.
Note 6: Specified output resistance includes internal switch resistance and capacitor ESR.
MAX660
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