Diodes ZXLD1371 - Manual

N
ZXLD1371
Document number
Descriptio
The ZXLD137
external MOS
topology contr
through series
to operate in b
The 60V capa
enables it to b
in excess of 15
The ZXLD137
patent pending
accuracy in a
dimming is ac
PWM control.
The ZXLD137
highlights a fa
information on
Features
• 0.5%
typic
•
5 to 60V o
• LED
drive
• configurat
• Wide
dyna
o 10:1 D
o 1000:
•
Up to 1MH
• High
temp
• Available
TS16949
• Available
lead Free
Note 1: EU Direct
RoHS exe
Typical Ap
Buck-Boos
TH
10
R
1.8
RGI2
75k
RGI1
24k
C1
10µF
VIN 8V to 22V
r: DS35436 Rev. 1
on
71 is an LED
FETs to drive
roller enabling
s connected LE
buck, boost and
ability coupled
be used in a wi
5 LEDs in serie
71 is a modif
g control sche
all three mod
chieved throug
1 uses two pin
ault, while the
the exact fault
cal output curre
operating voltag
er supports Buc
tions
amic range dim
DC dimming
1 dimming rang
Hz switching
perature contro
in Automotiv
certification
in “Green” Mo
Finish/ RoHS
tive 2002/95/EC (R
emptions applied.
pplication
st Diagram U
C2
330pF
ZXLD
H1
0k
R4
8k
PWM
VAUX VIN
GI
ADJ
REF
TADJ
SHP S NC
- 2
60V HIGH A
D driver contr
high current
it to efficiently
EDs. The multi
d buck-boost co
d with its mult
de range of ap
es.
fied hysteretic
eme providing
des of operati
gh DC control
ns for fault diag
multi-level stat
t.
ent accuracy
ge range
ck, Boost and B
mming
ge at 500Hz
ol of LED curren
ve Grade wi
olding Compou
Compliant (No
RoHS) & 2011/65/E
Circuit
tilizing Ther
D1371
L1
33µH
R1
0R05
N ISM
GND PGND
GATE
FLAG
STATUS
The
ww
ACCURACY
roller IC for d
LEDs. It is a
y control the c
i-topology enab
onfigurations.
i-topology cap
pplications and
c controller us
high output c
ion. High acc
and high freq
gnosis. A flag o
tus pin gives f
Buck-boost
nt using T
ADJ
ith AEC-Q100
und (No Br, Sb
ote 1)
EU (RoHS 2). All ap
mistor and T
H
C
10
D1
PDS3100
Q1
DMN6068LK3
ermally connected
ILED = 1A
1 of 42
ww.diodes.com
BUCK/BOOS
driving
multi-
current
bles it
pability
d drive
sing a
current
curacy
uency
output
further
Pin
0 and
b) with
pplicable
T
ADJ
10
10
I
L
C
OUT
0µF
1 to 6
LEDs
A
Dio
ST/BUCK-BO
n Assignme
Curve Sh
ADJ
REF
TADJ
SHP
STATUS
SGND
PGND
N/C
1
2
3
4
5
6
7
8
0%
00%
LED
Thermal netw
Rth = 1.8
A Product Lin
odes Incorpor
OOST LED D
ents
howing LED
1
2
3
4
5
6
7
8
TSSOP
70°C 85°C
work response in
8k and TH1 = 1 Ω
ZX
Febru
© Diodes
ne of
rated
DRIVER-CONT
Current vs. T
P-16EP
T
LED
R
T
Buck configuratio
10k (beta = 390 Ω
LD1371
uary 2012
Incorporated
TROLLER
T
LED
GI
PWM
FLAG
ISM
VIN
VAUX
GATE
N/C
16
15
14
13
12
11
10
9
Rth
TH1
REF
TADJ
on with:
00)