COS3525AP

@@ -0,0 +1,60 @@+# COS3525AP++**COSINE** · AC-DC Controllers and Regulators · SOP-16++COS3525AP from COSINE, 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 to the internal error amplifier. Used for feedback voltage sensing in the control loop. |+| 2 | NI Input | input | Non-inverting input to the internal error amplifier. Common-mode range includes the 5.1V reference, eliminating external divider resistors. |+| 3 | SYNC | input | Oscillator sync terminal. Allows multiple units to be slaved or a single unit to be synchronized to an external system clock. Sync threshold ~2V (1.2V min, 2.8V max). |+| 4 | OSC Output | output | Oscillator output. Provides a clock signal (typically ~4V amplitude, 0.5µs width) used to synchronize additional slave devices. |+| 5 | CT | passive | Timing capacitor connection pin for oscillator frequency programming (recommended 0.001-0.01 µF). Should be connected to device ground using minimal trace length. |+| 6 | RT | passive | Timing resistor connection pin for oscillator frequency programming. Recommended range 2-150 kΩ. Sets oscillator charging current together with CT. |+| 7 | Discharge | passive | Discharge terminal. A single resistor (0-500 Ω) between CT and Discharge provides adjustable dead-time control between the two outputs. |+| 8 | Soft Start | passive | Soft-start input pin. Connect an external capacitor to ground; it is charged by an internal 50 µA current source to slowly ramp up the duty cycle at startup. |+| 9 | Compensation | output | Output of the error amplifier, used for external loop compensation network attachment. Also can be pulled down (sinking ≥100 µA) to disable the outputs. |+| 10 | Shutdown | input | Shutdown control. Pull high (threshold ~0.8V, 0.6-1.0V) to shut down the PWM outputs. Should not be left floating. Provides instantaneous turn-off via the PWM latch on pulsed shutdown, and soft-start recycle on longer shutdown commands. |+| 11 | Output A | output | Output A of the on-chip totem-pole drive stage. Capable of sourcing/sinking >200 mA (500 mA absolute max). NOR-logic output on COS3525A (LOW when OFF). |+| 12 | Ground | power_in | Ground return pin for both signal and power stages. |+| 13 | VC | power_in | Collector supply for the output driver stage (4.5V to 40V operating). Should be bypassed with a 0.1 µF low-ESL ceramic capacitor placed with minimal trace length. |+| 14 | Output B | output | Output B of the on-chip totem-pole drive stage. Capable of sourcing/sinking >200 mA (500 mA absolute max). Alternates with Output A. NOR-logic output on COS3525A. |+| 15 | +VIN | power_in | Main supply voltage input (8V to 40V operating, 41V absolute max). Powers the internal reference, oscillator and control logic. |+| 16 | VREF | power_out | 5.1V reference output (trimmed to 1%, load capability up to 20 mA). Bypass with a 0.1 µF low-ESL ceramic capacitor with a minimal trace to the ground plane. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | COSINE |+| Package | SOP-16 |+| Category | PMIC |+| Pins | 16 |++## Ordering variants++- `COS3525AP`+- `COS3525APCOS3527AP`+- `COS3525APCOS3525AT`+- `COS3525APCOS3527AT`+- `COS3525APCOS3525AD`+- `COS3525APCOS3527AD`++## CAD (KiCad official)++- Symbol: `COS3525AP`+- 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:** [COSINE datasheet](docs/cos3525ap-datasheet.pdf) (10 pp, sha256 `9d9ff0dfc3e82fba`, 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).++[Datasheet PDF](docs/cos3525ap-datasheet.pdf)

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