SG3525AP013TR

@@ -0,0 +1,59 @@+# SG3525AP013TR++**STMicroelectronics** · AC-DC Controllers and Regulators · SOIC-16++SG3525AP013TR from STMicroelectronics, in a SOIC-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. Common-mode input range includes the 5.1 V reference so external divider resistors are not required. Vos typ 0.5 mV, Ib typ 1 µA. |+| 2 | N.I. INPUT | input | Non-inverting input of the internal error amplifier. Typically tied to the VREF (pin 16) divider providing the regulation setpoint. CMR typ 75 dB. |+| 3 | SYNC | bidirectional | Oscillator sync terminal. Bidirectional: allows multiple SG3525A units to be slaved together or the device to be synchronized to an external system clock. Sync threshold typ 2 V, sync input current typ 1 mA at 3.5 V. |+| 4 | OSC. OUTPUT | output | Buffered oscillator clock output. Provides a system clock signal (amplitude typ 3.5 V) that can drive external logic or additional SG3525A devices. |+| 5 | CT | passive | Oscillator timing capacitor terminal. Connect timing capacitor (0.001 µF to 0.1 µF) from CT to ground. With RT sets the oscillator frequency (100 Hz-400 kHz operating range). Charge current limit 5 mA. |+| 6 | RT | passive | Oscillator timing resistor terminal. Connect timing resistor (2 kΩ to 150 kΩ) from RT to ground. Together with CT sets the oscillator frequency per f ≈ 1/(CT(0.7·RT + 3·RD)). |+| 7 | DISCHARGE | passive | Dead-time / discharge terminal. A resistor (RD, 0-500 Ω) placed between RT (pin 6) and DISCHARGE (pin 7) sets the timing-capacitor discharge current, giving programmable dead-time between the two outputs. |+| 8 | SOFT-START | passive | Soft-start capacitor terminal. An internal ~50 µA current source charges the external capacitor to progressively enable the PWM after start-up. Also discharged during shutdown for soft recycle. |+| 9 | COMP | output | Error-amplifier output / PWM comparator input (compensation node). Frequency-compensation network is tied here. Output high ≥3.8 V, output low ≤0.5 V; DC open-loop gain typ 75 dB. |+| 10 | SHUTDOWN | input | Pulse-by-pulse shutdown input. Threshold typ 0.8 V (0.6-1.0 V). When asserted (>threshold, VSS = 2.5 V typical drive) the PWM latch immediately turns both outputs off and discharges the soft-start capacitor. Shutdown delay typ 0.2 µs. |+| 11 | OUTPUT A | output | Totem-pole PWM driver output A. Alternates with OUTPUT B at half the oscillator frequency. Capable of sourcing/sinking >200 mA (400 mA peak). Rise/fall typ 100/50 ns into 1 nF. |+| 12 | GROUND | power_in | Signal and power ground reference for all internal circuitry. |+| 13 | VC | power_in | Collector (driver) supply for the totem-pole output stages. Operating range 4.5 V to 35 V (absolute max 40 V). Bypass locally with a low-ESR capacitor. |+| 14 | OUTPUT B | output | Totem-pole PWM driver output B, complementary to OUTPUT A with programmable dead-time between them. Source/sink capability >200 mA (400 mA peak). |+| 15 | +VI | power_in | Main IC supply voltage. Operating range 8 V to 35 V (absolute max 40 V). Undervoltage lockout keeps outputs off until Vcomp and Vss thresholds (6-8 V, typ 7 V) are exceeded, with ~500 mV hysteresis. Standby current typ 14 mA. |+| 16 | VREF | power_out | Trimmed 5.1 V ±1 % reference output (5.05-5.15 V at Tj=25 °C for SG2525A; 5.0-5.2 V for SG3525A). Short-circuit current typ 80 mA; load capability up to 20 mA. Bypass with 0.1 µF to ground. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | SOIC-16 |+| Category | PMIC |+| Pins | 16 |++## Ordering variants++- `SG3525AP013TRSG2525AP`+- `SG3525AP013TRSG3525AP`+- `SG3525AP013TR`+- `SG3525AP013TRSG2525AN`+- `SG3525AP013TRSG3525AN`++## CAD (KiCad official)++- Symbol: `SG3525AP013TR`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](docs/sg3525ap013tr-datasheet.pdf) (12 pp, sha256 `249b8b0c18c356d5`, 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/sg3525ap013tr-datasheet.pdf)

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