XL1509-12E1
Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.
What the XL1509-12E1 family does
The XL1509x family comprises 2A, 150 kHz fixed-frequency PWM buck DC/DC converters available in 3.3V, 5V, 12V, and adjustable output versions. These devices operate from a 4.5V to 40V input range, support a maximum duty cycle of 100%, and maintain a minimum drop-out of 1.5V. The XL1509x delivers high efficiency with excellent line and load regulation, featuring built-in thermal shutdown, over-current protection, and a second current limit function. Engineers typically use this part in LCD monitors, digital photo frames, set-up boxes, ADSL modems, and telecom networking equipment where compact, efficient step-down regulation is required.
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Every number above is cited straight from the datasheet — ask what they mean for your design, and the assistant answers from the same source documents.
Ordering code:
XL1509-12E1 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 2 mA | 10 mA | VON/OFF = 0V, VFB = Vin; Electrical Characteristics (DC Parameters) | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output voltage | 11.5 V | 12 V | 12.5 V | Vin = 15V to 40VIload = 0.2A to 2A; vout; System parameters test circuit figure5 | XLSEMI datasheet, p. 6 — XL1509-12 Electrical Characteristics |
| output current | — | 2 A | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| supply voltage range | 4.5 V | — | 40 V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| switching frequency | — | 150 kHz | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| operating temperature | -40 °C | — | 85 °C | XLSEMI datasheet, p. 4 — Ordering Information | |
| standby current | — | 80 µA | — | VON/OFF = 5V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| dropout voltage | — | 1.2 V | — | VFB = 0V, Iout = 2A | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output count | — | 1 | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
XL1509-3.3E1 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 2 mA | 10 mA | VON/OFF = 0V, VFB = Vin; Electrical Characteristics (DC Parameters) | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output voltage | 3.17 V | 3.3 V | 3.43 V | Vin = 4.75V to 40VIload = 0.2A to 2A; vout; System parameters test circuit figure5 | XLSEMI datasheet, p. 6 — XL1509-3.3 Electrical Characteristics |
| output current | — | 2 A | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| supply voltage range | 4.5 V | — | 40 V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| switching frequency | — | 150 kHz | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| operating temperature | -40 °C | — | 85 °C | XLSEMI datasheet, p. 4 — Ordering Information | |
| standby current | — | 80 µA | — | VON/OFF = 5V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| dropout voltage | — | 1.2 V | — | VFB = 0V, Iout = 2A | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output count | — | 1 | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
XL1509-5.0E1 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 2 mA | 10 mA | VON/OFF = 0V, VFB = Vin; Electrical Characteristics (DC Parameters) | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output voltage | 4.8 V | 5 V | 5.2 V | Vin = 7V to 40VIload = 0.2A to 2A; vout; System parameters test circuit figure5 | XLSEMI datasheet, p. 6 — XL1509-5.0 Electrical Characteristics |
| output current | — | 2 A | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| supply voltage range | 4.5 V | — | 40 V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| switching frequency | — | 150 kHz | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| operating temperature | -40 °C | — | 85 °C | XLSEMI datasheet, p. 4 — Ordering Information | |
| standby current | — | 80 µA | — | VON/OFF = 5V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| dropout voltage | — | 1.2 V | — | VFB = 0V, Iout = 2A | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output count | — | 1 | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
XL1509-ADJE1 datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 2 mA | 10 mA | VON/OFF = 0V, VFB = Vin; Electrical Characteristics (DC Parameters) | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output voltage | 1.19 V | 1.23 V | 1.27 V | Vin = 4.5V to 40VIload = 0.2A to 2A; vout; System parameters test circuit figure5 | XLSEMI datasheet, p. 6 — XL1509-ADJ Electrical Characteristics |
| output current | — | 2 A | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| supply voltage range | 4.5 V | — | 40 V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| switching frequency | — | 150 kHz | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) | |
| operating temperature | -40 °C | — | 85 °C | XLSEMI datasheet, p. 4 — Ordering Information | |
| standby current | — | 80 µA | — | VON/OFF = 5V | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| dropout voltage | — | 1.2 V | — | VFB = 0V, Iout = 2A | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
| output count | — | 1 | — | XLSEMI datasheet, p. 7 — Electrical Characteristics (DC Parameters) |
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