TL494IDR

@@ -0,0 +1,65 @@+# TL494IDR++**Texas Instruments** · DC-DC Converters · SOIC-16++TL494IDR from Texas Instruments, in a SOIC-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 | 1IN+ | input | Noninverting input to error amplifier 1. Common-mode input range −0.3 V to VCC − 2 V. |+| 2 | 1IN- | input | Inverting input to error amplifier 1. Common-mode input range −0.3 V to VCC − 2 V. |+| 3 | FEEDBACK | input | Feedback / PWM-comparator input. Zero-duty-cycle input threshold ≈4 V; sinks 0.3-0.7 mA at 0.7 V. Ties together error-amp outputs and PWM comparator input. |+| 4 | DTC | input | Dead-time control comparator input. Programs the minimum guaranteed off-time between output pulses; 0 V gives ~45% max duty per output, ~3.3 V forces zero duty. Input bias current up to −10 μA (0 to 5.25 V). |+| 5 | CT | passive | Oscillator timing capacitor terminal. CT ties from this pin to GND; recommended 0.47 nF to 10 μF. Sets oscillator frequency together with RT (fosc ≈ 1.1/(RT·CT)). |+| 6 | RT | passive | Oscillator timing resistor terminal. RT ties from this pin to GND; recommended 1.8 kΩ to 500 kΩ. Sets oscillator charge current with CT for fosc = 1 kHz-300 kHz. |+| 7 | GND | power_in | Device ground (0 V reference for all internal circuitry). |+| 8 | C1 | output | Collector of uncommitted NPN output transistor 1. Sinks/sources up to 200 mA per transistor; VCEO(max) 41 V. Wire as common-emitter (output to VCC via load, E1 to GND) or emitter-follower depending on OUTPUT CTRL setting. |+| 9 | E1 | output | Emitter of uncommitted NPN output transistor 1. Handles 200 mA source in emitter-follower configuration or ties to GND for common-emitter drive. |+| 10 | E2 | output | Emitter of uncommitted NPN output transistor 2. 200-mA capable; wired analogously to E1 for single-ended or push-pull drive. |+| 11 | C2 | output | Collector of uncommitted NPN output transistor 2. Sinks/sources up to 200 mA; VCEO(max) 41 V. Complements C1 in push-pull operation. |+| 12 | VCC | power_in | Positive supply. Recommended operating range 7 V to 40 V (absolute max 41 V). Typical standby current 6 mA at VCC = 15 V. |+| 13 | OUTPUT CTRL | input | Output configuration select. Tie to GND for parallel single-ended output (both transistors switch in phase); tie to REF (pin 14) for push-pull operation with the internal flip-flop steering alternating pulses to C1/E1 and C2/E2. |+| 14 | REF | power_out | Internal 5-V ±5% precision reference output (4.75-5.25 V at IO = 1 mA). Source up to 10 mA to external circuitry; short-circuit current ≈25 mA. Commonly used to bias OUTPUT CTRL and error-amp dividers. |+| 15 | 2IN- | input | Inverting input to error amplifier 2. Common-mode input range −0.3 V to VCC − 2 V. |+| 16 | 2IN+ | input | Noninverting input to error amplifier 2. Common-mode input range −0.3 V to VCC − 2 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-16 |+| Category | PMIC |+| Pins | 16 |++## Ordering variants++- `TL494IDRD`+- `TL494IDRDR`+- `TL494IDRIDR`+- `TL494IDRID`+- `TL494IDRDB`+- `TL494IDRDBR`+- `TL494IDRN`+- `TL494IDRNS`+- `TL494IDRNSR`+- `TL494IDRPW`+- `TL494IDRPWR`++## CAD (KiCad official)++- Symbol: `TL494IDR`+- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`+- 3D model: SOIC-16 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/tl494.pdf) (35 pp, sha256 `62ece39ba0620383`, 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/tl494idr-datasheet.pdf)

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