TX4310B

@@ -0,0 +1,41 @@+# TX4310B++**XDS** · DC-DC Converters · SOT-23-6++TX4310B from XDS, in a SOT-23-6. 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 | VOUT | power_out | Regulated charge-pump voltage output, nominally 3.3 V ±4% (3.17-3.43 V). Requires a low-ESR (<0.1 Ω) ceramic bypass capacitor of ≥10 µF to GND for stability and low output ripple. Can source up to ~250 mA at VIN=3 V; internally current-limited to ~300 mA under short-circuit. |+| 2 | GND | power_in | Device ground / power return. Should be tied to a solid ground plane; bypass capacitors on VDD and VOUT should return to this pin with the shortest possible traces to minimize switching noise at the 1.2 MHz pump frequency. |+| 3 | EN | input | Active-high CMOS enable input with a threshold of ~0.8 V; driving EN low places the part in shutdown (all internal circuitry off, VOUT disconnected from VDD, IQ <1 µA). High-impedance CMOS input - MUST NOT be left floating; always drive with a valid logic level. Absolute-max VEN = -0.3 V to 6 V. |+| 4 | C- | passive | Negative terminal of the flying (bootstrap) charge-pump capacitor. Connect between C- (pin 4) and C+ (pin 6) a low-ESR ceramic capacitor (≥2.2 µF recommended to achieve rated output current). Never use polar capacitors (tantalum/aluminum) here - the pin voltage can reverse during startup. |+| 5 | VDD | power_in | Input supply pin, 1.8 V to 5 V operating range (absolute-max 6 V). Requires a low-ESR (<0.1 Ω) ceramic bypass capacitor of ≥10 µF to GND placed close to the pin to minimize input ripple. No-load supply current ~0.65 mA (typ, VIN=2.7 V); shutdown current <1 µA. |+| 6 | C+ | passive | Positive terminal of the flying (bootstrap) charge-pump capacitor. Connect a low-ESR ceramic capacitor (≥2.2 µF) between C+ (pin 6) and C- (pin 4). Do not use tantalum or aluminum electrolytics; polarity across this capacitor can reverse during startup. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | XDS |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## CAD (KiCad official)++- Symbol: `TX4310B`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [XDS datasheet](docs/tx4310b-datasheet.pdf) (7 pp, sha256 `4874b5b97ef9b7e0`, 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/tx4310b-datasheet.pdf)

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