SG2525M

@@ -0,0 +1,57 @@+# SG2525M++**HGSEMI** · AC-DC Controllers and Regulators · SOP-16++SG2525M from HGSEMI, 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. Typical input offset 1.5 mV, input bias current 1 µA, common-mode range 1.5 to 5.2 V. |+| 2 | Noninv. Input | input | Non-inverting input of the internal error amplifier. Common-mode input range 1.5 V to 5.2 V; typically tied to VREF (5.1 V) via a divider for voltage-mode regulation. |+| 3 | Sync | bidirectional | Oscillator synchronization pin, active-low. Sync threshold 1.2-2.8 V (typ 2 V); sync input current ~1.3 mA at 3.5 V. Allows master/slave operation or synchronization to an external clock. |+| 4 | OSC. Output | output | Oscillator clock output. Clock amplitude 3-4 V (typ), pulse width 0.3-1 µs at TJ=25 °C. Available to drive external logic or provide sync to other SG2525/SG3525 devices. |+| 5 | CT | passive | Timing capacitor connection. Together with RT sets the oscillator frequency (100 Hz to 500 kHz range; e.g. RT=2 kΩ, CT=470 pF → ~430 kHz; RT=200 kΩ, CT=0.1 µF → ~60 Hz). |+| 6 | RT | passive | Timing resistor connection. Sets oscillator charging current; combined with CT determines the oscillator frequency. |+| 7 | Discharge | passive | Discharge pin for the timing capacitor. A resistor between CT (pin 5) and Discharge (pin 7) programs the dead time between the two outputs. |+| 8 | Soft-Start | passive | Soft-start capacitor pin (C_Soft-Start). Charged by an internal ~51 µA current source to gradually ramp the PWM duty cycle at start-up. |+| 9 | Compensation | output | Error-amplifier output / PWM comparator input. Used for loop compensation; PWM input threshold 0.7-0.9 V (0% duty) up to ~3.2-3.6 V (max duty ~49%). |+| 10 | Shutdown | input | Active-high shutdown input. Threshold 0.6-1.0 V (typ 0.8 V); drives both outputs low and discharges the soft-start capacitor for cycle-by-cycle pulse termination or full shutdown. |+| 11 | Output A | output | Totem-pole PWM output A. Source/sink capability >150 mA (peak 400 mA); VOH ≥17 V at 100 mA source (VCC=20 V), VOL ≤2 V at 100 mA sink. Alternates with Output B at half the oscillator frequency. |+| 12 | Ground | power_in | Signal and power ground return for the device. |+| 13 | VC | power_in | Output-stage collector supply for the totem-pole drivers. Maximum 40 V; typically bypassed to ground with 0.1 µF close to the pin. Allows the output stage to be powered separately from VCC. |+| 14 | Output B | output | Totem-pole PWM output B. Complementary to Output A; source/sink >150 mA. Push-pull pair drives external power switches or transformer primaries. |+| 15 | VCC | power_in | Main supply input. Operating range 8-35 V (absolute max 40 V); typical ICC ~12 mA at VCC=35 V. UVLO threshold ~7 V with hysteresis. Bypass with 0.1 µF close to the pin. |+| 16 | Vref | power_out | 5.1 V ±1% internal reference output. Load capability up to 20 mA (short-circuit ~80 mA); line/load/temperature guaranteed 4.95-5.25 V. Bypass with 0.1 µF to ground. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HGSEMI |+| Package | SOP-16 |+| Category | PMIC |+| Pins | 16 |++## Ordering variants++- `SG2525MM/TR`+- `SG2525MN`+- `SG2525MMT/TR`++## CAD (KiCad official)++- Symbol: `SG2525M`+- 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:** [HGSEMI datasheet](docs/sg2525m-datasheet.pdf) (9 pp, sha256 `257c81ee012cd504`, 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/sg2525m-datasheet.pdf)

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