Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SOT25.png
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The ZXLD1350 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 7V and 30V and provides an externally adjustable output current of up to 350mA. Depending upon supply voltage and external components, this can provide up to 8 watts of output power. The ZXLD1350 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 or a gated output current. The PWM filter components are contained within the chip. The PWM filter provides a soft-start feature by controlling the rise of input/output current. The soft-start time can be increased 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. The device is assembled in a TSOT25 pin package.
| AEC Qualified | No |
|---|---|
| Compliance (Only Automotive supports PPAP) | Standard |
| Topologies (Buck) | Yes |
| Topologies (Buck-Boost) | No |
| Topologies (Boost) | No |
| Topologies (Charge Pump) | No |
| Minimum Input Voltage (V) | 7 |
| Maximum Input Voltage (V) | 30 |
| Maximum Output Voltage (V) | 30 |
| Maximum LED Current (A) | 0.38 |
| LED Current Accuracy (%) | 5 |
| Switching Frequency Maximum (kHz) | 1000 |
| Dimming (PWM) | Yes |
| Dimming (Analog) | Yes |
| Efficiency (%) | 95 |
| Operating Temperature Range (°C) | -40 to 105 |
| Sense/Feedback Voltage (mV) | 100 |
| AEC-Q100 Grade | No |
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-2312 | 2018-04-11 | 2018-07-11 | Qualification of Additional Bill of Materials (BOM), Top Marking, and Fab Source for Select Products |
