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| LM3555TLE Datasheet, PDF (11/33 Pages) Texas Instruments – LM3555 Synchronous Boost Converter with 500 mA High Side LED Driver and Dual-Mode Control Interface | |||
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LM3555
www.ti.com
SNVS594E â JANUARY 2009 â REVISED NOVEMBER 2011
Typical Characteristics (continued)
Unless otherwise specified: TA = 25°C; VIN = 3.6V; CIN1= 10 µF, CIN2= 0.1 µF, COUT = 11 µF; L = 2.2 µH.
LED Current
Inductor Current Limit
vs
vs
Input Voltage
Input Voltage
2.25
ICL = 2.0A
2.00
VOUT (V) = 8.2V @ 400 mA
In Current Limit
0.50
VOUT (V) = 8.2V
0.45
1.75
0.40
1.50
ICL = 1.75A
ICL = 1.5A
1.25
1.00
ICL = 1.25A
0.35
0.30
ICL = 1.5A
ICL = 1.25A
ICL = 1.75A
0.75
2.5 3.1 3.7 4.3 4.9 5.5
ICL = 2.0A
0.25
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
Shutdown Current
vs
Input Voltage
VIN (V)
Standby Current
vs
Input Voltage
1.0
0.9
0.8
0.7
TA = +85°C
0.6
0.5
0.4
0.3
0.2
0.1
0.0
TA = +25°C
TA = -30°C
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
Frequency
vs
Temperature
2.20
2.10
4.0
3.5
3.0
2.5
TA = +85°C
2.0
1.5
1.0
0.5
0.0
TA = -30°C and +25°C
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
Frequency
vs
Input Voltage
2.10
2.05
TA = -30°C
2.00
2.00
TA = +85°C
TA = +25°C
1.90
1.95
1.80
-30 -20 -10 0 10 20 30 40 50 60 70 80 90
TA (°C)
1.90
2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
Copyright © 2009â2011, Texas Instruments Incorporated
Product Folder Links: LM3555
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