Overview
Description
The ZLED7320 continuous-mode inductive step-down converter is part of our ZLED7x20 family of LED-control ICs. It is designed for applications requiring high brightness and high current. It can efficiently drive a single LED or multiple series-connected LEDs from a voltage input higher than the LED forward voltage: Vin = 6 to 40 VDC. It provides an adjustable output current ≤1.0A, which is set via an external resistor and controlled by the ZLED7320's integrated high-side output current-sensing circuit and high-speed internal 40V power switch. An external control signal, which can be a DC voltage, PWM, or microcontroller-generated waveform, on the ADJ pin can also be used to linearly adjust a continuous output current or to control a gated output current. The output can be turned off by applying a voltage lower than 0.2V to the ADJ pin, which puts the ZLED7320 in a low-current standby state. The ZLED7320 enables diverse industrial and consumer lighting applications requiring high driving currents, wide operating voltage range, high efficiency, and variable brightness control. It offers over-temperature and LED open-circuit protection. The ZLED7320 can also minimize bill-of-material costs because very few external components are required for most applications. Only a resistor, a diode, an inductor, and three capacitors are needed for a typical basic application.
Features
- Up to 1.0A output current
- Internal 40V power switch
- Wide DC input voltage range: 6 to 40 VDC
- Output current accuracy: 3% (typical)
- Dimming ratio: 1200:1
- LED open-circuit protection
- Thermal shutdown protection
Comparison
Applications
Documentation
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Type | Title | Date |
Datasheet | PDF 620 KB | |
Guide | 7Z 1.21 MB | |
End Of Life Notice | PDF 106 KB | |
Application Note | PDF 263 KB | |
4 items
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Design & Development
Boards & Kits
Demo Kit for ZLED7020
The ZLED7020KIT-D1 Demo Kit enables a quick and easy evaluation of IDT's ZLED7020 High Current 40V LED Driver w/ Internal Switch within its basic application circuit and demonstrates basic layout guidelines, which are critical with any switching regulator to minimize radiated EMI. The kit...
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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