component
xl3525z
Public Unreviewedby Ray
XINLUDA AC-DC Controllers and Regulators, SOP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.
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README
markdownXL3525Z
XINLUDA · AC-DC Controllers and Regulators · SOP-16
XL3525Z from XINLUDA, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | INV. INPUT | input | Inverting input of the internal error amplifier. Typically driven by the feedback network from the regulated output; used together with the N.I. INPUT to close the voltage control loop. |
| 2 | N.I. INPUT | input | Non-inverting input of the internal error amplifier. Common-mode input range includes the +5.1 V reference so it can be tied directly to VREF without external resistors. |
| 3 | SYNC | input | Oscillator sync input. Allows multiple XL3525 units to be slaved together or a single unit to be synchronized to an external system clock. Sync threshold ~2 V, sync input current ~1 mA at 3.5 V. |
| 4 | OSC. OUTPUT | output | Oscillator clock output. Provides the internal clock signal (~3.5 V amplitude, 0.5 µs typical clock width) that can be used to sync other devices or for external timing observation. |
| 5 | CT | passive | Oscillator timing capacitor terminal. Connect the timing capacitor CT (0.001 µF to 0.1 µF) from this pin to ground to set the oscillator frequency together with RT. |
| 6 | RT | passive | Oscillator timing resistor terminal. Connect timing resistor RT (2 kΩ to 150 kΩ) from this pin to VREF to set the oscillator frequency (100 Hz to 400 kHz range). |
| 7 | DISCHARGE | passive | Oscillator discharge terminal. A single resistor (0 to 500 Ω) between CT (pin 5) and this pin sets the oscillator dead-time / discharge time and provides adjustable dead-time control. |
| 8 | SOFT-START | passive | Soft-start capacitor terminal. An external capacitor to ground here is charged by an internal ~50 µA current source to implement soft-start; also acts as a pull-down shutdown input (sink ≥100 µA to disable outputs). |
| 9 | COMP | output | Error amplifier output / PWM comparator input (compensation node). Loop compensation network connects here; also accepts a pull-down (≥100 µA) to shut down the outputs. Output swing typ. 0.2 V (low) to 3.8 V (high). |
| 10 | SHUTDOWN | input | Active-high shutdown input (threshold ~0.8 V). A positive signal immediately sets the PWM latch to turn off the outputs and enables a ~150 µA sink that discharges the soft-start capacitor. Should not be left floating. |
| 11 | OUTPUT A | output | Totem-pole PWM driver output A. Sources/sinks in excess of 200 mA (peak 400 mA); alternates with OUTPUT B at half the oscillator frequency for push-pull drive. Powered from VC (pin 13). |
| 12 | GROUND | power_in | Device ground (0 V reference). Common return for the signal, control, and output driver stages. |
| 13 | VC | power_in | Collector supply for the output driver stages (4.5 V to 35 V, abs max 40 V). Powers OUTPUT A and OUTPUT B and is typically bypassed with a local capacitor. |
| 14 | OUTPUT B | output | Totem-pole PWM driver output B. Sources/sinks in excess of 200 mA (peak 400 mA); alternates with OUTPUT A at half the oscillator frequency for push-pull drive. Powered from VC (pin 13). |
| 15 | +Vi | power_in | Main input supply voltage (8 V to 35 V operating, abs max 40 V). Powers the internal reference, oscillator, error amplifier, and control logic. Typical standby current 14 mA. |
| 16 | VREF | power_out | On-chip +5.1 V reference output, trimmed to ±1%. Load capability up to 20 mA (short-circuit ~100 mA). Typically bypassed with 0.1 µF and used to bias RT and the error amplifier non-inverting input. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XINLUDA |
| Package | SOP-16 |
| Category | PMIC |
| Pins | 16 |
Ordering variants
XL3525ZXL3525ZXL3525KXL3525ZXD3525
CAD (KiCad official)
- Symbol:
XL3525Z - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XINLUDA datasheet (None pp, sha256
1a99ad128cc09d00, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).
Symbol & Footprint
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Datasheet
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