herunterladen
ZXLD1371
Document number: DS35436 Rev. 2 - 2
1 of 43
www.diodes.com
February 2017
© Diodes Incorporated
ZXLD1371
60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER
Description
The ZXLD1371 is an LED driver controller IC for driving external
MOSFETs to drive high-current LEDs. It is a multi-topology controller
enabling it to efficiently control the current through series connected
LEDs. The multi-topology enables it to operate in buck, boost and
buck-boost configurations.
The 60V capability coupled with its multi-topology capability enables it
to be used in a wide range of applications and drive in excess of 15
LEDs in series.
The ZXLD1371 is a modified hysteretic controller using a patent
pending control scheme providing high output current accuracy in all
three modes of operation. High accuracy dimming is achieved through
DC control and high frequency PWM control.
The ZXLD1371 uses two pins for fault diagnosis. A flag output
highlights a fault, while the multi-level status pin gives further
information on the exact fault.
Pin Assignments
Typical Application Circuit
Buck-Boost Diagram Utilizing Thermistor and T
ADJ
85C70C
ILED
100%
10%
TLED
Thermal network response in Buck configuration with:
Rth = 1.8k and TH1=10k (beta =3900)
REF
TADJ
Rth
TH1
Curve Showing LED Current vs. T
LED
Features
0.5% typical output current accuracy
5 to 60V operating voltage range
LED driver supports Buck, Boost and Buck-boost
configurations
Wide dynamic range dimming
o 10:1 DC dimming
o 1000:1 dimming range at 500Hz
Up to 1MHz switching
High temperature control of LED current using T
ADJ
Available in Automotive Grade with AEC-Q100 and TS16949
certification
Lead-Free Finish; RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
An Automotive-Compliant Part is Available Under Separate
Datasheet (ZXLD1371Q)
Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied.
2. See http://www.diodes.com/quality/lead_free.html - and
Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-
+ Cl) and <1000ppm antimony compounds.
ADJ
REF
TADJ
SHP
STATUS
SGND
PGND
N/C
GI
PWM
FLAG
ISM
VIN
VAUX
GATE
N/C
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TSSOP-16EP
C2
330pF
ZXLD1371
L1
33µH
TH1
10k
R4
1.8k
RGI2
75k
RGI1
24k
C1
10µF
C
OUT
10µF
D1
PDS3100
Q1
DMN6068LK3
R1
0R05
PWM
VAUX VIN ISM
GI
ADJ
REF
TADJ
SHP SGNDPGND
GATE
FLAG
STATUS
NC
Thermally connected
VIN 8V to 22V
1 to 6
LEDs
ILED = 1A
Green
Verzeichnis
- ・ Konfiguration des Pinbelegungsdiagramms on Seite 1 Seite 2
- ・ Abmessungen des Paketumrisses on Seite 42
- ・ Paket-Footprint-Pad-Layout on Seite 43
- ・ Teilenummerierungssystem on Seite 42
- ・ Markierungsinformationen on Seite 42
- ・ Blockdiagramm on Seite 3
- ・ Typisches Anwendungsschaltbild on Seite 1
- ・ Technische Daten on Seite 3
- ・ Anwendungsbereich on Seite 2 Seite 20 Seite 21 Seite 22 Seite 23
- ・ Elektrische Spezifikation on Seite 5 Seite 6
