SG3525ANG

@@ -0,0 +1,60 @@+# SG3525ANG++**onsemi** · AC-DC Controllers and Regulators · DIP-16++SG3525ANG from onsemi, in a DIP-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 no external divider is required. Input bias current ~1 µA typ. |+| 2 | Noninv. Input | input | Non-inverting input of the internal error amplifier. Common-mode range +1.5 V to +5.2 V. Used to compare feedback against reference or user setpoint. |+| 3 | Sync | bidirectional | Oscillator sync pin. Allows multiple SG3525A units to be slaved together or a single unit to be synchronized to an external system clock. Sync threshold 1.2-2.8 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, 0.3-1.0 µs pulse width) for external synchronization or monitoring. |+| 5 | CT | passive | Oscillator timing capacitor connection. External CT (0.001-0.2 µF) sets oscillator charge time together with RT. Frequency range 100 Hz to 400 kHz. |+| 6 | RT | passive | Oscillator timing resistor connection. External RT (2.0-150 kΩ) sets the oscillator charging current. |+| 7 | Discharge | passive | Deadtime programming pin. A resistor RD (0-500 Ω) between CT (pin 5) and Discharge (pin 7) sets the oscillator discharge/deadtime. |+| 8 | Soft-Start | passive | Soft-start capacitor connection. An external capacitor charged by an internal ~50 µA source implements soft-start of the PWM duty cycle. Can also accept a pull-down (~100 µA) to disable outputs. |+| 9 | Compensation | output | Error amplifier output / PWM comparator input. Compensation network is tied here to shape the loop response. Also accepts a pull-down (~100 µA) to force outputs off. |+| 10 | Shutdown | input | Active-high shutdown. Positive signal immediately sets the PWM latch (fast turn-off) and enables a 150 µA sink that discharges the soft-start cap for extended shutdowns. Should not be left floating. |+| 11 | Output A | output | Totem-pole PWM output A. Sources/sinks up to ±100 mA steady state, ±400 mA peak. Alternates with Output B on successive oscillator cycles; NOR-logic low in off-state. |+| 12 | Ground | power_in | Signal and power ground return for the device. |+| 13 | VC | power_in | Collector supply for the totem-pole output drivers (Output A/B). Operating range 4.5-35 Vdc; absolute max +40 Vdc. May be tied to VCC or a separate rail suited to the gate/base drive voltage required. |+| 14 | Output B | output | Totem-pole PWM output B. Complements Output A (alternates each oscillator cycle). Sources/sinks up to ±100 mA steady state, ±400 mA peak. |+| 15 | VCC | power_in | Main IC supply. Operating range 8.0-35 Vdc; absolute max +40 Vdc. Under-voltage lockout inhibits outputs and soft-start charging when VCC is below ~7 V. |+| 16 | Vref | power_out | Internal +5.1 V reference output, trimmed to ±1%. Sources up to 20 mA of load current; short-circuit limited to ~80 mA. Bypass to ground with a small ceramic (typ 0.1 µF). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | onsemi |+| Package | DIP-16 |+| Category | PMIC |+| Pins | 16 |++## Ordering variants++- `SG3525ANGN`+- `SG3525ANGNG`+- `SG3525ANGDW`+- `SG3525ANGDWG`+- `SG3525ANGDWR2`+- `SG3525ANGDWR2G`++## CAD (KiCad official)++- Symbol: `SG3525ANG`+- Footprint: `Package_DIP:DIP-16_W7.62mm`+- 3D model: DIP-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [onsemi datasheet](https://www.onsemi.com/pdf/datasheet/sg3525an-d.pdf) (10 pp, sha256 `2c62cf949fb3216e`, retrieved 2026-08-17, tier: manufacturer)+- **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/sg3525ang-datasheet.pdf)

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