LM2731XEVAL National Semiconductor, LM2731XEVAL Datasheet - Page 5

• Manufacturer Part Number: LM2731XEVAL
• Description: BOARD EVALUATION LM2731X
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM2731XEVAL

• Main Purpose: DC/DC, Step Up
• Outputs And Type: 1, Non-Isolated
• Current - Output: 1.8A
• Voltage - Input: 2.7 ~ 14V
• Regulator Topology: Boost
• Frequency - Switching: 1.6MHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM2731
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Voltage - Output: -
• Power - Output: -

D
I
L
MAX
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the
device outside of the limits set forth under the operating ratings which specify the intended range of operating conditions.
Note 2: The maximum power dissipation which can be safely dissipated for any application is a function of the maximum junction temperature, T
C, the junction-to-ambient thermal resistance for the SOT-23 package, θ
dissipation at any ambient temperature for designs using this device can be calculated using the formula:
If power dissipation exceeds the maximum specified above, the internal thermal protection circuitry will protect the device by reducing the output voltage as
required to maintain a safe junction temperature.
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Note 4: Limits are guaranteed by testing, statistical correlation, or design.
Note 5: Typical values are derived from the mean value of a large quantity of samples tested during characterization and represent the most likely expected value
of the parameter at room temperature.
Note 6: Switch current limit is dependent on duty cycle (see Typical Performance Characteristics).
Note 7: Guaranteed limits are the same for Vin = 3.3V input.
Note 8: L = 10 µH, C
Typical Performance Characteristics
Symbol
Iq Vin (Active) vs Temperature - "X"
Maximum Duty Cycle
(Note
Switch Leakage
OUT
= 4.7 µF, duty cycle = maximum
7)
Parameter
“X” Option
“Y” Option
Not Switching V
Conditions
20059102
J-A
SW
= 265°C/W, and the ambient temperature, T
= 5V
5
Unless otherwise specified: V
Iq Vin (Active) vs Temperature - "Y"
(Note
Min
86
92
4)
IN
(Note
Typical
= 5V, SHDN pin tied to V
A
93
96
. The maximum allowable power
5)
(Note
Max
1
4)
20059104
www.national.com
J
(MAX) = 125°
IN
Units
.
µA
%