 English |
|
|
|
|
|
|
|
| LM3424 Datasheet, PDF (47/69 Pages) National Semiconductor (TI) – Constant Current N-Channel Controller with Thermal Foldback for Driving LEDs | |||
| |||
| ◁ |
www.ti.com
8.2.3 Boost Application
8V ± 28V
VIN
CIN
L1
LM3424, LM3424-Q1
SNVS603C â AUGUST 2009 â REVISED AUGUST 2015
D1
RUV2
RUV1
1
VIN
LM3424
20
HSP
RHSP
2
EN
19
HSN
RHSN
CCMP
3
COMP
18
SLOPE
RSLP
RCSH
4
CSH
17
IS
RT
5
RT/SYNC
RUVH
6
nDIM
16
VCC
CBYP
15
GATE
Q1
CSS
7
SS
14
GND
RLIM
RGAIN
8
TGAIN
13
DDRV
CFS
RFS
RSNS
1A
ILED
COUT
Q2
ROV2
RREF1
CREF
9
TSENSE
10
TREF
DAP
12
OVP
11
VS
RREF2
RBIAS
COV
ROV1
Q3
PWM
CNTC
NTC
8.2.3.1 Design Requirements
⢠Input: 8 V to 28 V
⢠Output: 9 LEDs at 1A
⢠65°C - 100°C Thermal Foldback
⢠PWM Dimming up to 30 kHz
⢠700 kHz Switching Frequency
Figure 41. Boost Application
Copyright © 2009â2015, Texas Instruments Incorporated
Product Folder Links: LM3424 LM3424-Q1
Submit Documentation Feedback
47
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese