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LM3424 Datasheet(PDF) 49 Page - Texas Instruments

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Part # LM3424
Description  Constant Current N-Channel Controller with Thermal Foldback for Driving LEDs
PDF  69 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3424 Datasheet(HTML) 49 Page - Texas Instruments

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background image
SS
TGAIN
OVP
LM3424
nDIM
VIN
GND
TSENSE
TREF
DDRV
VS
COUT
DAP
GATE
EN
COMP
VIN
CSH
RT/SYNC
IS
HSN
SLOPE
VCC
HSP
D1
L1
CIN
RSLP
CBYP
RLIM
Q1
CCMP
RCSH
RT
CSS
ROV2
ROV1
RUV2
RUV1
RGAIN
RREF1
RREF2
RBIAS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
RHSP
RHSN
CNTC
2A
ILED
RSNS
RFS
CFS
COV
CREF
Q5
VIN
10V ± 30V
RPOT
Q7
Q6
Q4
D2
VIN
DIM
RPU
RSER
DIM
Q3
PWM
RUVH
CB
CF
RF
Q2
LM3424, LM3424-Q1
www.ti.com
SNVS603C – AUGUST 2009 – REVISED AUGUST 2015
8.2.4 Buck-Boost Application
Figure 42. Buck-Boost Application
8.2.4.1 Design Requirements
•
Input: 10V to 30V
•
Output: 4 LEDs at 2A
•
PWM Dimming up to 10 kHz
•
Analog Dimming
•
600-kHz Switching Frequency
Copyright © 2009–2015, Texas Instruments Incorporated
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Product Folder Links: LM3424 LM3424-Q1



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