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| LM2731XMF_NOPB Datasheet, PDF (4/16 Pages) Texas Instruments – LM2731 0.6/1.6 MHz Boost Converters With 22V Internal FET Switch in SOT-23 | |||
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LM2731
TI Confidential - NDA Restrictions
SNVS217F â MAY 2004 â REVISED NOVEMBER 2012
www.ti.com
Electrical Characteristics
Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range
(â40°C ⤠TJ ⤠+125°C). Unless otherwise specified: VIN = 5V, VSHDN = 5V, IL = 0A.
Parameter
Test Conditions
Min (1)
Typ (2)
Max (1)
Units
VIN
Input Voltage
2.7
14
V
VOUT (MIN)
Minimum Output Voltage RL = 43â¦
VIN = 2.7V
5.4
7
V
Under Load
X Option(3)
VIN = 3.3V
8
10
VIN = 5V
16
RL = 43â¦
Y Option(3)
VIN = 2.7V
6
7.5
VIN = 3.3V
8.75
11
VIN = 5V
15
RL = 15â¦
X Option(3)
VIN = 2.7V
3.75
5
VIN = 3.3V
5
6.5
VIN = 5V
10
RL = 15â¦
VIN = 2.7V
4
5
Y Option(3)
VIN = 3.3V
5.5
7
VIN = 5V
10
ISW
Switch Current Limit
See (4)
1.8
2
A
1.4
RDS(ON)
Switch ON Resistance
ISW = 100 mA
Vin = 5V
260
400
mâ¦
500
ISW = 100 mA
Vin = 3.3V
300
450
550
SHDNTH
Shutdown Threshold
Device ON
Device OFF
1.5
V
0.50
ISHDN
VFB
Shutdown Pin Bias Current
Feedback Pin Reference
Voltage
VSHDN = 0
VSHDN = 5V
VIN = 3V
0
µA
0
2
1.205
1.230
1.255
V
IFB
IQ
ÎVFB/ÎVIN
FSW
DMAX
Feedback Pin Bias Current
Quiescent Current
FB Voltage Line
Regulation
Switching Frequency(5)
VFB = 1.23V
VSHDN = 5V, Switching "X"
VSHDN = 5V, Switching "Y"
VSHDN = 5V, Not Switching
VSHDN = 0
2.7V ⤠VIN ⤠14V
âXâ Option
Maximum Duty Cycle(5)
âYâ Option
âXâ Option
âYâ Option
60
500
2
3.0
1.0
2
400
500
0.024
1
0.02
1
1.6
1.85
0.40
0.60
0.8
78
86
88
93
nA
mA
µA
%/V
MHz
%
IL
Switch Leakage
Not Switching VSW = 5V
1
µA
(1) Limits are guaranteed by testing, statistical correlation, or design.
(2) 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.
(3) L = 10 µH, COUT = 4.7 µF, duty cycle = maximum
(4) Switch current limit is dependent on duty cycle (see Typical Performance Characteristics).
(5) Guaranteed limits are the same for Vin = 3.3V input.
4
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