component

TL494CN

Public Unreviewed

by Ray

Texas Instruments AC-DC Controllers and Regulators, DIP-16. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmictl494cn
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

PCB Footprint

Open full view ↗
Loads on click. Unloads only if this page sits in the background.

Datasheet

Open in new tab ↗
Loads on click. Unloads only if this page sits in the background.
Download PDF
Contents

README

markdown

TL494CN

Texas Instruments · AC-DC Controllers and Regulators · DIP-16

TL494CN from Texas Instruments, in a DIP-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 input to the PWM comparator. Threshold voltage ~0.7 V at zero duty cycle up to ~4 V at max duty cycle; input sink current 0.3-0.7 mA.
4 DTC input Dead-time control comparator input. 0 V to ~3.3 V range sets minimum dead time (~5%) to zero duty cycle; input bias current typ. -2 uA.
5 CT passive Timing capacitor terminal used to set oscillator frequency. Recommended CT = 0.47 nF to 10 uF; a sawtooth waveform is generated at this pin.
6 RT passive Timing resistor terminal used to set oscillator frequency. Recommended RT = 1.8 kΩ to 500 kΩ, giving fosc from 1 kHz to 300 kHz.
7 GND power_in Device ground / network ground reference for all voltages.
8 C1 output Collector terminal of internal BJT output 1 (Q1). Rated up to 40 V collector off-state voltage, 200 mA continuous / 250 mA absolute max.
9 E1 output Emitter terminal of internal BJT output 1 (Q1). Configure as common-emitter (E1 to GND) or emitter-follower (C1 to VCC).
10 E2 output Emitter terminal of internal BJT output 2 (Q2). Configure as common-emitter or emitter-follower depending on topology.
11 C2 output Collector terminal of internal BJT output 2 (Q2). Rated up to 40 V collector off-state voltage, 200 mA continuous / 250 mA absolute max.
12 VCC power_in Positive supply. Recommended 7 V to 40 V; absolute max 41 V. Standby supply current ~6-15 mA depending on VCC.
13 OUTPUT CTRL input Output-mode select. Tie to GND for single-ended / parallel output operation, or tie to REF for push-pull operation (enables pulse-steering flip-flop).
14 REF power_out Internal 5-V (±5%) precision reference regulator output. Sources up to 10 mA of external load; used as bias and as pull-up for OUTPUT CTRL in push-pull mode.
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 DIP-16
Category PMIC
Pins 16

Ordering variants

Same part, different packaging or reel option.

  • TL494CNN
  • TL494CN
  • TL494CND
  • TL494CNNS
  • TL494CNPW
  • TL494CNDB

CAD (KiCad official)

  • Symbol: TL494CN
  • Footprint: Package_DIP:DIP-16_W7.62mm
  • 3D model: DIP-16 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (33 pp, sha256 c5328754fe54af21, 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