HT6908ARTZ

@@ -0,0 +1,48 @@+# HT6908ARTZ++**HTCSEMI** · Synchronous Rectifier Controllers · SOT-23-6++HT6908ARTZ from HTCSEMI, 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 | HVC | power_in | High-voltage linear regulator input. Accepts up to +180 V (abs max) referenced to VSS and supplies the internal VDD charge path (70 mA current source, clamped to 9 V when V_HVC > 9.7 V). Can be tied to VD or VSS depending on high-side/low-side configuration. |+| 2 | VSS | power_in | Device ground. Also used as the MOSFET source sense reference for the VD forward-voltage measurement. |+| 3 | SLEW | input | Programming pin for turn-on signal slew-rate detection. An external resistor R_SLEW (e.g., 400 kΩ) to VSS sets the slew-rate detection timer T_SLEW ≈ R_SLEW × 90 ns / 400 kΩ, which prevents false turn-on from ringing during DCM and quasi-resonant operation. |+| 4 | VDD | power_out | Linear regulator output and IC supply. Operating range 4 V to 13 V (recommended); regulated to ~5 V when charged from VD (V_HVC < 4.7 V) or ~9 V when charged from HVC. Requires an external hold-up capacitor (VDD UVLO rising 3.75 V typ). |+| 5 | VG | output | Gate drive output for the external synchronous-rectifier MOSFET. Drives standard and logic-level SR MOSFETs with ~0.5 A source / 3 A sink capability, V_G-H ≥ 4.9 V, pull-down impedance ~1 Ω. Turn-on/turn-off delays ~30 ns / 25 ns. |+| 6 | VD | input | MOSFET drain voltage sense. Measures V_DS of the external SR MOSFET (up to +150 V recommended, +180 V abs max relative to VSS) to control gate on/off: turn-on threshold V_DS = -86 mV typ, turn-off threshold VSS-VD = 3 mV typ, forward regulation ~40 mV. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | HTCSEMI |+| Package | SOT-23-6 |+| Category | Power Management (PMIC) |+| Pins | 6 |++## Ordering variants++Same part, different packaging or reel option.++- `HT6908ARTZ`+- `HT6908ARTZARDZ`++## CAD (KiCad official)++- Symbol: `HT6908ARTZ`+- 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:** [HTCSEMI datasheet](docs/ht6908artz-datasheet.pdf) (13 pp, sha256 `17cc1da9c3621e09`, 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/ht6908artz-datasheet.pdf)

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