ZXLD1370/1EV4 User Guide
1.5A 40W Buck-Boost LED Driver
ZXLD1370/1EV4 Rev2
Page 1 of 11
October 2016
www.diodes.com
General Description
The ZXLD1370/1 EV4 1.5A board uses the Buck-
Boost
topology
working
at
Boundary
Conduction Mode. It can perform step-down or
boost up power conversion according to the
output LEDs load vs. input voltage. It is designed
for driving a high LED current from a wide range
voltage source. The board can operate from an
input supply between 10V and 30V and
provides an externally adjustable output
current of up to 1.5A. The ZXLD1370/1 EV4
board can provide more than 40 watts of
output power
.
Key Features
Wide input voltage range: 10V to 30V
Up to 1.5A output current
Single pin on/off and brightness control
using DC voltage or PWM
Up to 1MHz switching frequency
±5% output current accuracy
Inherent open-circuit LED protection
High-Side Current Sense
Hysteretic Control: No Compensation
Adjustable output LED Current
TSSOP-16EP package for large output power
application
RoHS compliant
Applications
High lumen LED Bulb
Automotive high power LED lamp
ZXLD1370/1 EV4 Specifications
Parameter
Value
Input Voltage
10 to 30V
DC
(1371)
10 to 20V
DC
(1370)
Output Power
30 – 40W
LED Current
1.5A (Adjustable)
LED Voltage
27V
Efficiency
~85%
Number of LEDs
9 LEDs in series
(Under Tested)
XYZ Dimension
3.00 ” x 3.25” x 0.5”
ROHS Compliance
Yes
Evaluation Board
Figure 1: Top View
Connection Instructions
Input Voltage: 10 to 30V
DC
(DC+, DC-)
LED Outputs: LED+ (Red), LED- (Black)
DC-
DC+
LED+
LED-
