LM2681M6X National Semiconductor, LM2681M6X Datasheet - Page 2

• Manufacturer Part Number: LM2681M6X
• Description: IC CONVERTER SWITCH CAP SOT23-6
• Manufacturer: National Semiconductor
• Type: Switched Capacitor (Charge Pump), Divider, Doublerr

Specifications of LM2681M6X

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.8 ~ 11 V
• Current - Output: 20mA
• Frequency - Switching: 80kHz
• Voltage - Input: 2.5 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-6
• Power - Output: 600mW
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: LM2681M6XTR

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V+
I
I
R
R
f
f
P
V
Q
L
OSC
SW
EFF
OEFF
SW
OUT
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard typeface are for T
less otherwise specified: V+ = 5V, 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
temperatures 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 θ
Note 4: In the test circuit, capacitors C
output voltage and efficiency.
Note 5: Specified output resistance includes internal switch resistance and capacitor ESR. See the details in the application information for positive voltage doubler.
Note 6: The output switches operate at one half of the oscillator frequency, f
Symbol
V+ to GND Voltage:
OUT to GND Voltage:
OUT to V+ Voltage:
V+ and OUT Continuous Output Current
Output Short-Circuit Duration to GND (Note 2)
Continuous Power
Dissipation (T
Supply Voltage
Supply Current
Output Current
Sum of the R
internal MOSFET switches
Output Resistance (Note 5)
Oscillator Frequency
Switching Frequency
Power Efficiency
Voltage Conversion Efficiency
A
= 25˚C)(Note 3)
JA
Parameter
is the junction-to-ambient thermal resistance of the specified package.
ds(on)
of the four
1
and C
J
1
2
= 25˚C, and limits in boldface type apply over the full operating temperature range. Un-
= C
are 3.3 µF, 0.3Ω maximum ESR capacitors. Capacitors with higher ESR will increase output resistance, reduce
2
= 3.3 µF. (Note 4)
Condition
No Load
I
I
(Note 6)
(Note 6)
R
OUT
I
No Load
(Note 1)
L
L
L
L
600 mW
= 20 mA
= 20 mA
= 20 mA to GND
(1.0k) between GND and
30 mA
1 sec.
11.6V
5.8V
5.8V
DMax
OSC
2
= (T
= 2f
JMax
SW
T
θ
Operating Junction
Temperature Range
Storage Temperature Range
Lead Temp. (Soldering, 10 seconds)
ESD Rating
JA
JMax
.
− T
(Note 3)
(Note 3)
A
)/θ
JA
, where T
JMax
Min
2.5
20
80
40
86
99
is the maximum junction temperature, T
99.96
Typ
550
160
15
80
93
90
8
−65˚C to +150˚C
1000
Max
5.5
16
40
−40˚ to 85˚C
210˚C/W
150˚C
300˚C
A
Units
2kV
is the
kHz
kHz
mA
µA
Ω
Ω
%
%
V