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LM3405AXMKX Arkusz danych(PDF) 4 Page - Texas Instruments

Numer części LM3405AXMKX
Szczegółowy opis  LM3405A 1.6MHz, 1A Constant Current Buck LED Driver with Internal ensation in Tiny SOT and VSSOP PowerPAD Packages
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Strona internetowa  http://www.ti.com
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LM3405AXMKX Arkusz danych(HTML) 4 Page - Texas Instruments

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LM3405A
SNVS508C – OCTOBER 2007 – REVISED MAY 2013
www.ti.com
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VIN = 12V. Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the
junction temperature (TJ) range of -40°C to +125°C. Minimum and Maximum limits are specified through test, design, or
statistical correlation. Typical values represent the most likely parametric norm, and are provided for reference purposes only.
Parameter
Test Conditions
Min
Typ
Max
Units
VFB
Feedback Voltage
0.188
0.205
0.220
V
ΔVFB/(ΔVINxVFB)
Feedback Voltage Line Regulation
VIN = 3V to 22V
0.01
%/V
IFB
Feedback Input Bias Current
Sink/Source
10
250
nA
Under-voltage Lockout
VIN Rising
2.74
2.95
V
UVLO
Under-voltage Lockout
VIN Falling
1.9
2.3
V
UVLO Hysteresis
0.44
V
fSW
Switching Frequency
1.2
1.6
1.9
MHz
DMAX
Maximum Duty Cycle
VFB = 0V
85
94
%
SOT (VBOOST - VSW = 3V)
300
600
RDS(ON)
Switch ON Resistance
m
MSOP (VBOOST - VSW = 3V)
360
700
ICL
Switch Current Limit
VBOOST - VSW = 3V, VIN = 3V
1.2
2.0
2.8
A
Quiescent Current
Switching, VFB = 0.195V
1.8
2.8
mA
IQ
Quiescent Current (Shutdown)
VEN/DIM = 0V
0.3
µA
Enable Threshold Voltage
VEN/DIM Rising
1.8
V
VEN/DIM_TH
Shutdown Threshold Voltage
VEN/DIM Falling
0.4
V
IEN/DIM
EN/DIM Pin Current
Sink/Source
0.01
µA
ISW
Switch Leakage
VIN = 22V
0.1
µA
4
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Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LM3405A


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