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ZXLD1370 Scheda tecnica(PDF) 2 Page - Diodes Incorporated

Il numero della parte ZXLD1370
Spiegazioni elettronici  60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST
PDF  40 Pages
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Produttore elettronici  DIODES [Diodes Incorporated]
Homepage  http://www.diodes.com
Logo DIODES - Diodes Incorporated

ZXLD1370 Scheda tecnica(HTML) 2 Page - Diodes Incorporated

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ZXLD1370
Document number: DS32165 Rev. 6 - 2
2 of 40
www.diodes.com
December 2016
© Diodes Incorporated
ZXLD1370
Typical Applications Circuit
VAUX
VIN
ISM
PWM
GI
ADJ
GATE
REF
FLAG
TADJ
STATUS
SHP
SGND PGND
L1
SD1
C1
C2
VIN 8V
to 18V
GND
R1
LED 1
to 4
TH1
10k
Thermally connected
33mH
0R1
4.7µF
100pF
RGI2
62k
51k
RGI1
2k
R4
Q1
DMN6068LK3
PSD3100
I LED = 1A
U1
ZXLD1370
COUT
4.7µF
Buck-Boost Diagram Utilizing Thermistor and TADJ
85
˚C
70
˚C
ILED
100%
10%
TLED
Thermal network response in Buck configuration with:
Rth = 2k
Ω and TH1=10kΩ (beta =3900)
REF
TADJ
Rth
TH1
Curve Showing LED Current vs. TLED
Functional Block Diagram
Fast
current
monitor
Accurate
current
monitor
-
Error amp
Demand
current
source
Frequency &
hysteresis
control
Gate
driver
ADJ
COMPIN
RS
VIN
+
-
LOAD
L
GI
D
R2
R1
VIN
ISENSE
VAUX
VAUX
PWM
SGND
PGND
REF
TADJ
Reference
STATUS
FLAG
Error
report



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