KA3525A

@@ -0,0 +1,51 @@+# KA3525A++**Minos** · Supervisor and Reset ICs · DIP-16++KA3525A from Minos, 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 | Error amplifier inverting input. Compared against the non-inverting input (pin 2) to generate the PWM control voltage. Common-mode range approximately +1.5 V to +5.2 V. |+| 2 | Noninv. Input | input | Error amplifier non-inverting input. Typically tied to a resistor divider from Vref (pin 16) to set the regulation setpoint. |+| 3 | Sync | input | Oscillator sync input. Allows an external clock to synchronize the internal oscillator. Sync threshold typically 2.0 V (1.2 V min, 2.8 V max), sync input current ~1.0 mA at 3.5 V. |+| 4 | OSC. Output | output | Oscillator output. Provides the internal system clock (typical 3.0-3.5 V amplitude, 0.3-1.0 μs pulse width) useful for synchronizing additional KA3525A devices or external logic. |+| 5 | CT | passive | Timing capacitor connection. Together with RT (pin 6) sets the oscillator frequency. Range 0.001 μF to 0.2 μF for 100 Hz to 400 kHz operation. |+| 6 | RT | passive | Timing resistor connection to ground. Sets the oscillator charging current together with CT. Range 2.0 kΩ to 150 kΩ. |+| 7 | Discharge | passive | Discharge / dead-time adjust pin. An external resistor from CT (pin 5) to this pin sets the dead-time between the two outputs. Dead-time resistor RD range 0 to 500 Ω. |+| 8 | Soft-Start | passive | Soft-start capacitor. An internal ~50 μA current source (Vshutdown=0 V, typ 50 μA, min 25 μA, max 80 μA) charges an external capacitor to gradually increase the PWM duty cycle from zero at power-up. |+| 9 | Compensation | output | Error amplifier output and PWM comparator input. External RC compensation network is applied here to shape the loop response. PWM input threshold ranges from ~0.9 V (zero duty) to ~3.3 V (max duty). |+| 10 | Shut-down | input | Shutdown / standby input. Pulling this pin high inhibits the outputs and discharges the soft-start capacitor; at Vshutdown=2.5 V input current is ~0.4 mA. |+| 11 | Output A | output | Totem-pole output A. Alternates with Output B (pin 14) to drive an external power stage. ±100 mA continuous, ±400 mA peak. Max duty cycle per output ~49%. |+| 12 | Ground | power_in | Signal and power ground return for the device. |+| 13 | Vc | power_in | Output stage collector supply. Powers the totem-pole output drivers separately from VCC. Recommended 4.5 V to 35 V, absolute max +40 V. |+| 14 | Output B | output | Totem-pole output B. Alternates with Output A (pin 11) at half the oscillator frequency. ±100 mA continuous, ±400 mA peak. Rise time typ 100 ns, fall time typ 50 ns into 1 nF load. |+| 15 | VCC | power_in | Main IC supply voltage. Recommended 8.0 V to 35 V (absolute max +40 V). Undervoltage lockout trips at approximately 7.0 V typical. ICC typ 14 mA. |+| 16 | Vref | power_out | 5.1 V ±1% precision reference output. Sourcing up to 20 mA (50 mA absolute max). Typically bypassed with 0.1 μF and used to bias the error-amplifier divider and external timing network. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Minos |+| Package | DIP-16 |+| Category | PMIC |+| Pins | 16 |++## CAD (KiCad official)++- Symbol: `KA3525A`+- 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:** [Minos datasheet](docs/ka3525a-datasheet.pdf) (7 pp, sha256 `4098c17ca88f179c`, 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/ka3525a-datasheet.pdf)

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