Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. TSOT25

V-DFN3030-6

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ZXLD1356

Datasheet

Evaluation Boards and User Guides

ZXLD1356EV1-User-Guide.pdf (278 KB)

ZXLD1356EV2-User-Guide.pdf (282 KB)

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Description

The ZXLD1356 is a continuous mode inductive step-down converter, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 6V and 60V and provides an externally adjustable output current of up to 550mA. Depending upon supply voltage and external components, this can provide up to 30 watts of output power.

The ZXLD1356 has been qualified to AECQ100 Grade 1 enabling operation in ambient temperatures from -40°C to +125°C.

Output current can be adjusted above, or below the set value, by applying an external control signal to the 'ADJ' pin. Enhanced output current dimming can be achieved by applying a PWM signal to the ‘ADJ’ pin.

Feature(s)

Typically better than 0.8% output current accuracy
Simple and with low part count
Single pin on/off and brightness control using DC voltage or PWM
PWM resolution up to 1000:1
High efficiency (up to 97%)
Wide input voltage range: 6V to 60V
Inherent open-circuit LED protection
Available in thermally enhanced packages
- V-DFN3030-6 θ_JA 44°C/W
- TSOT25 θ_JA 82°C/W
Available in “Green” Molding Compound (No Br, Sb) with lead Free Finish/ RoHS Compliant
-  Totally Lead-Free & Fully RoHS Compliant
-  Halogen and Antimony Free. “Green” Device
ZXLD1356QET5TA Automotive Grade qualified to AEC-Q100 Grade 1

Application(s)

Low Voltage Halogen Replacement LEDs
Automotive Lighting
Low Voltage Industrial Lighting
LED Back-Up Lighting
Illuminated Signs
Emergency Lighting
SELV Lighting
Refrigeration Lights

Specifications & Technical Documents

Product Parameters

AEC Qualified	No
Compliance (Only Automotive Supports PPAP)	Standard
Topologies (Buck)	Yes
Topologies (Buck-Boost)	No
Topologies (Boost)	No
Topologies (SEPIC)	No
MinimumInput Voltage (V)	6
MaximumInput Voltage (V)	60
Maximum Output Voltage (V)	60
Maximum LED Current (A)	0.55
LED Current Accuracy (%)	3
Switching Frequency Maximum (kHz)	100
Dimming (PWM)	Yes
Dimming (Analog)	Yes
Efficiency (%)	97
Sense/Feedback Voltage (mV)	200
AEC-Q100 Grade	No
Operating Temperature Range (°C)	-40 to 125

Technical Documents

Evaluation Boards and User Guides

ZXLD1356EV1-User-Guide.pdf (278 KB)

ZXLD1356EV2-User-Guide.pdf (282 KB)

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products