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LM3423-Q1 データシート(PDF) 4 Page - Texas Instruments

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部品番号 LM3423-Q1
部品情報  N-Channel Controllers for Constant-Current LED Drivers
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メーカー  TI1 [Texas Instruments]
ホームページ  http://www.ti.com
Logo TI1 - Texas Instruments

LM3423-Q1 データシート(HTML) 4 Page - Texas Instruments

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LM3421, LM3421-Q1, LM3423, LM3423-Q1
SNVS574F – JULY 2008 – REVISED JULY 2015
www.ti.com
Pin Functions (continued)
PIN
I/O
DESCRIPTION
FUNCTION
NAME
LM3423
LM3421
Connect to the drain of the main N-channel MOSFET switch
IS
17
13
I
Main switch current sense
for RDS-ON sensing or to a sense resistor installed in the
source of the same device.
Connect the low side of all external resistor dividers (VIN
RPD
18
14
I
Resistor Pulldown
UVLO, OVP) to implement zero-current shutdown.
LED current sense
Connect through a series resistor to the positive side of the
HSP
19
15
I
positive
LED current sense resistor.
LED current sense
Connect through a series resistor to the negative side of the
HSN
20
16
I
negative
LED current sense resistor.
Thermal PAD on bottom
Star ground, connecting AGND and PGND.
DAP
DAP (21) DAP (17)
GND
of IC
6 Specifications
6.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)
(1) (2)
MIN
MAX
UNIT
VIN, EN, RPD, nDIM
–0.3
76
V
–1 continuous
mA
OVP, HSP, HSN, LRDY, FLT, DPOL
–0.3
76
V
–100 continuous
µA
RCT
–0.3
76
V
–1 continuous
5 continuous
mA
IS
–0.3
76
V
–2 for 100 ns
–1 continuous
mA
VCC
–0.3
8
V
TIMR
–0.3
7
V
–100 continuous
100 continuous
µA
COMP, CSH
–0.3
6
V
–200 continuous
200 continuous
µA
GATE, DDRV
–0.3
VCC
V
–2.5 for 100 ns
VCC+ 2.5 for 100 ns
–1 continuous
1 continuous
mA
PGND
–0.3
0.3
V
–2.5 for 100 ns
2.5 for 100 ns
Continuous power dissipation
Internally Limited
Maximum junction temperature
Internally Limited
Maximum lead temperature (solder and reflow) (3)
260
°C
Storage temperature
–65
150
°C
(1)
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2)
If Military/Aerospace specified devices are required, contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3)
Refer to http://www.ti.com/packaging for more detailed information and mounting techniques.
4
Submit Documentation Feedback
Copyright © 2008–2015, Texas Instruments Incorporated
Product Folder Links: LM3421 LM3421-Q1 LM3423 LM3423-Q1


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