Texas Instruments LM3429 Evaluation Boards LM3429BSTEVAL/NOPB LM3429BSTEVAL/NOPB 数据表
产品代码
LM3429BSTEVAL/NOPB
OVP
nDIM
LM3429
AGND
V
IN
PGND
NC
DAP
GATE
COMP
V
IN
CSH
RCT
IS
HSP
V
CC
HSN
1
2
3
4
5
6
7
14
13
12
11
10
9
8
I
LED
PWM
V
IN
(V)
EF
F
IC
IEN
C
Y
(%
)
100
95
90
85
80
10
15
20
25
30
SNVS616G – APRIL 2009 – REVISED MAY 2013
N-Channel Controller for Constant Current LED Drivers
Check for Samples:
,
1
FEATURES
DESCRIPTION
The LM3429 is a versatile high voltage N-channel
2
•
LM3429Q1 is an Automotive Grade Product
MosFET controller for LED drivers . It can be easily
That is AEC-Q100 Grade 1 Qualified (-40°C to
configured in buck, boost, buck-boost and SEPIC
+125°C Operating Junction Temperature)
topologies. This flexibility, along with an input voltage
•
V
IN
Range From 4.5V to 75V
rating
of
75V,
makes
the
LM3429
ideal
for
illuminating LEDs in a very diverse, large family of
•
Adjustable Current Sense Voltage
applications.
•
High-Side Current Sensing
Adjustable high-side current sense voltage allows for
•
2
Ω
, 1A Peak MosFET Gate Driver
tight regulation of the LED current with the highest
•
Input Under-Voltage Protection
efficiency possible. The LM3429 uses Predictive Off-
•
Over-Voltage Protection
time (PRO) control, which is a combination of peak
current-mode control and a predictive off-timer. This
current-mode control and a predictive off-timer. This
•
PWM Dimming
method
of
control
eases
the
design
of
loop
•
Analog Dimming
compensation while providing inherent input voltage
•
Cycle-by-Cycle Current Limit
feed-forward compensation.
•
Programmable Switching Frequency
The LM3429 includes a high-voltage startup regulator
•
Thermal Shutdown
that operates over a wide input range of 4.5V to 75V.
The
The
internal
PWM
controller
is
designed
for
APPLICATIONS
adjustable switching frequencies of up to 2.0 MHz,
thus enabling compact solutions. Additional features
thus enabling compact solutions. Additional features
•
LED Drivers - Buck, Boost, Buck-Boost, SEPIC
include analog dimming, PWM dimming, over-voltage
•
Indoor and Outdoor SSL
protection,
under-voltage
lock-out,
cycle-by-cycle
current limit, and thermal shutdown.
•
Automotive
•
General Illumination
The LM3429 comes in a low profile, thermally
efficient TSSOP 14-lead package.
efficient TSSOP 14-lead package.
•
Constant-Current Regulators
The LM3429Q1 is an Automotive Grade product that
is AEC-Q100 grade 1 qualified
is AEC-Q100 grade 1 qualified
Typical Boost Application Circuit
Figure 1. Boost Evaluation Board
9 Series LEDs at 1A
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2009–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.