TL7733BCDR

@@ -0,0 +1,54 @@+# TL7733BCDR++**Texas Instruments** · Supervisor And Reset ICs · SOIC-8++TL7733BCDR from Texas Instruments, in a SOIC-8. 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 | REF | output | Reference voltage output. Provides a temperature-compensated 2.53 V (typ, 2.48-2.58 V) reference at Iref = -500 µA. Requires an external 0.1 µF decoupling capacitor to GND to reduce influence of fast supply transients. |+| 2 | RESIN | input | Active-low reset input. When RESIN is low (VIL <= 0.8 V), RESET output goes high and RESET goes low, forcing a reset regardless of SENSE. When RESIN is high (VIH >= 2 V), the RESET outputs are allowed to trigger based on the SENSE voltage. Input current -10 µA max. |+| 3 | CT | passive | Timing capacitor connection. External capacitor CT to GND sets the reset pulse duration after SENSE crosses the positive-going threshold: td ~= 2.6e4 x CT (seconds, with CT in farads). Charged by an internal current source; a series resistor RT is recommended when SENSE monitors VCC to prevent false triggering. |+| 4 | GND | power_in | Ground reference. All voltages are referenced to this pin. |+| 5 | RESET | output | Active-low reset output (open-collector). Sinks up to IOL = 16 mA at VOL <= 0.4 V. Asserts low during power-up (VCC >= ~1 V), when SENSE < VIT- (~3.08 V typ), or when RESIN is low. Requires an external pullup resistor (10 kOhm recommended). |+| 6 | RESET | output | Active-high reset output (open-emitter/collector totem). Sources up to IOH = -16 mA at VOH >= VCC - 1.5 V. Asserts high during undervoltage or when RESIN is low; complementary to the active-low RESET (pin 5). Requires an external pulldown resistor (10 kOhm recommended). |+| 7 | SENSE | input | Sense input. Voltage input to be supervised, typically tied to VCC or a divided supply rail. Negative-going threshold VIT- = 3.08 V (typ, 3.03-3.13 V at 25°C) with ~10 mV hysteresis. Input voltage range 0 to 18 V. |+| 8 | VCC | power_in | Supply voltage input. Recommended operating range 3.6 V to 18 V (absolute max 20 V). Supply current ICC = 1.8 mA typ, 3 mA max at VSENSE = 15 V. Decouple with 0.1 µF to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-8 |+| Category | Power Management (PMIC) |+| Pins | 8 |++## Ordering variants++Same part, different packaging or reel option.++- `TL7733BCDR`+- `TL7733BCDRBID`+- `TL7733BCDRBIDR`+- `TL7733BCDRBCP`+- `TL7733BCDRBCP.A`++## CAD (KiCad official)++- Symbol: `TL7733BCDR`+- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`+- 3D model: SOIC-8 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/tl7733b) (None pp, sha256 `08789e8628c5397c`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/tl7733bcdr-datasheet.pdf)

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