BD8303MUV-E2

@@ -0,0 +1,57 @@+# BD8303MUV-E2++**ROHM** · DC-DC Converters · QFN-16-EP(3x3)++BD8303MUV-E2 from ROHM, in a QFN-16-EP(3x3). 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 | RT | input | Oscillation frequency set terminal. An external resistor R_RT to GND programs the internal oscillator frequency (0.2 to 1.0 MHz operating range; 600 kHz typ at R_RT = 51 kΩ). |+| 2 | INV | input | Error amplifier inverting input terminal. Compared against the internal 1.0V reference; sets the DC/DC output regulation point through the external feedback divider. |+| 3 | FB | output | Error amplifier output terminal. Loop-compensation network is connected between FB and INV. Sources ~20 µA / sinks ~1.3 mA. |+| 4 | GND | power_in | Signal/analog ground terminal for the IC. |+| 5 | STB | input | ON/OFF (standby) control terminal. IC turns ON when STB ≥ 2.5V and OFF when open or 0V. Internal ~400 kΩ pull-down to GND. |+| 6 | BOOT2 | power_in | Output-side (SW2/secondary) high-side gate driver bootstrap supply input. External bootstrap capacitor to SW2 supplies the floating high-side driver. Max 7V vs SW2, 20V vs GND. |+| 7 | HG2 | output | Output-side (secondary) high-side external N-channel FET gate drive terminal. Referenced to SW2. On-resistance ~4Ω typ. |+| 8 | SW2 | passive | Output-side (secondary) switching node / coil connecting terminal. Return reference for the BOOT2/HG2 high-side driver. Max 15V absolute. |+| 9 | LG2 | output | Output-side (secondary) low-side external N-channel FET gate drive terminal, referenced to PGND. Max duty ~90%, min ~10%; ~4Ω on-resistance. |+| 10 | PGND | power_in | Driver part power-ground terminal. Return for the low-side gate drivers; connect to system ground with a low-impedance path. |+| 11 | LG1 | output | Input-side (primary) low-side external N-channel FET gate drive terminal, referenced to PGND. ~4Ω on-resistance; ~100 ns dead-time vs HG1. |+| 12 | SW1 | passive | Input-side (primary) switching node / coil connecting terminal. Return reference for the BOOT1/HG1 floating high-side driver. Max 15V absolute. |+| 13 | HG1 | output | Input-side (primary) high-side external N-channel FET gate drive terminal, referenced to SW1. Max duty ~90%. ~4Ω on-resistance. |+| 14 | BOOT1 | power_in | Input-side (primary) high-side gate driver bootstrap supply input. External bootstrap capacitor to SW1 develops floating rail for HG1. Max 7V vs SW1, 20V vs GND. |+| 15 | REG | power_out | 5V internal regulator (VREG) output terminal. Supplies internal circuitry and BOOT rail; requires an external 1.0 µF decoupling capacitor. 4.7 to 5.5V, 5.1V typ. Absolute max 7V. |+| 16 | VCC | power_in | Main power input terminal. Operating range 2.7V to 14V; absolute maximum 15V. Supplies the internal 5V regulator and control circuitry. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | ROHM |+| Package | QFN-16-EP(3x3) |+| Category | PMIC |+| Pins | 16 |++## Ordering variants++Same part, different packaging or reel option.++- `BD8303MUV-E2`++## CAD (KiCad official)++- Symbol: `BD8303MUV-E2`+- Footprint: `Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.7x1.7mm`+- 3D model: QFN-16-EP(3x3) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [ROHM datasheet](docs/bd8303muv-e2-datasheet.pdf) (27 pp, sha256 `a09f7b160668292c`, 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/bd8303muv-e2-datasheet.pdf)

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