Zetex Semiconductors PLC ZXLD1362EV3 User Manual
ZXLD1362EV3 User Guide issue 1
1/7
11-01-2008
ZXLD1362EV3 USER GUIDE
DESCRIPTION
The ZXLD1362EV3, Figure 1, is a PCB constructed using an aluminium base for evaluating the ZXLD1362 LED
driver with internal switch [1]. The evaluation board can be used to drive an external choice of LEDs; the total forward
voltage across the LEDs depending on the number and type connected.
The operating voltage is nominally higher than 30V for the external LEDs, and can be raised to 60V maximum, which
will reduce the supply current. Please refer to the Zetex ZXLD1360 and ZXLD1350 products for applications requiring
input voltages lower than 30V.
The nominal current for the evaluation board is set at 700mA with a
driver with internal switch [1]. The evaluation board can be used to drive an external choice of LEDs; the total forward
voltage across the LEDs depending on the number and type connected.
The operating voltage is nominally higher than 30V for the external LEDs, and can be raised to 60V maximum, which
will reduce the supply current. Please refer to the Zetex ZXLD1360 and ZXLD1350 products for applications requiring
input voltages lower than 30V.
The nominal current for the evaluation board is set at 700mA with a
0.15
Ω sense resistor, R1.
The 68uH inductor used in the circuit is based on a 30V nominal supply, which should be connected across +VIN and
GND pins.
Note:
GND pins.
Note:
The evaluation board does not have reverse polarity protection. It is fitted with a 2.1mm DC power plug with
positive to the centre pole.
Test point ADJ provides a connection point for DC or PWM dimming and shutdown.
Warning: with 700mA output, the connected LED will be hot and very bright
Test point ADJ provides a connection point for DC or PWM dimming and shutdown.
Warning: with 700mA output, the connected LED will be hot and very bright
Figure 1: ZXLD1362EV3 evaluation board