Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.
The ZXLD1362 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 1A. Depending upon supply voltage and external components, this can provide up to 48 watts of output power.
The ZXLD1362 includes the output switch and a high-side output current sensing circuit, which uses an external resistor to set the nominal average output current.
Output current can be adjusted above, or below the set value, by applying an external control signal to the 'ADJ' pin.
The ADJ pin will accept either a DC voltage or a PWM waveform. Depending upon the control frequency, this will provide either a continuous (dimmed) or a gated output current. Soft-start can be forced using an external capacitor from the ADJ pin to ground.
Applying a voltage of 0.2V or lower to the ADJ pin turns the output off and switches the device into a low current standby state.
ZXLD1362 Maximum Ratings
Part Number
ZXLD1362
Min.- Max. Input Voltage (V)
6 ~ 60
Output Voltage (V)
60
Typ Peak Output Current (A)
1
Max Output Current (mA)
-
LED Current Accuracy (%)
5
Frequency (kHz) typ
1000
Efficiency (%)
95
Operating Temperature (C)
-40 to +125
Quiescent Current (mA) typ
-
Standby Quiescent Current (uA) typ
65
ZXLD1362 Features
• Simple low parts count • Internal 60V NDMOS switch • Up to 1A output current • Single pin on/off and brightness control using DC voltage or PWM • PWM resolution up to 3000:1 • Soft start capability • High efficiency (up to 95%) • Wide input voltage range: 6V to 60V • 65V transient capability • Low power shutdown • Up to 1MHz switching frequency • Inherent open-circuit LED protection • Typical 4% output current accuracy
ZXLD1362 Typical Application
• Low voltage halogen replacement LEDs • Automotive lighting • Low voltage industrial lighting • LED back-up lighting • Illuminated signs • Emergency lighting • SELV lighting • LCD TV backlighting