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UC3846N

Public Made by Adom

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Texas Instruments DC-DC Converters, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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UC3846N

Texas Instruments · DC-DC Converters · DIP-16

UC3846N 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 C/S SS input Soft-start and current-limit programming input; sink current maximum 50 mA
2 VREF power_in 5.1-V band-gap reference output, ±1% accuracy; load regulation 3-15 mV for IL=1-10 mA
3 C/S, input Current-sense inverting input; common-mode range 0 to VIN-3 V
4 C/S + input Current-sense non-inverting input; common-mode range 0 to VIN-3 V
5 E/A + input Error-amplifier non-inverting input; common-mode range 0 to VIN-2 V
6 E/A, input Error-amplifier inverting input; common-mode range 0 to VIN-2 V
7 COMP bidirectional Error-amplifier output and PWM comparator input; output voltage 0.7-1 V low, 4.3-4.6 V high
8 CT input Oscillator timing capacitor pin for frequency programming per fT = 2.2/(RT·CT) kHz
9 RT input Oscillator timing resistor pin for frequency programming; oscillator current maximum 5 mA
10 Sync bidirectional Synchronization output from master or input to slave controller; output levels 3.9-4.35 V high, 2.3-2.5 V low
11 A Out output PWM driver output A; 500-mA peak source and sink; complementary with B Out
12 GND power_in Signal ground reference; all signals referenced to this node
13 VC power_in Output-stage bias supply input; maximum voltage 40 V
14 B Out output PWM driver output B; 500-mA peak source and sink; complementary with A Out
15 VIN power_in Logic and output-stage supply input; operating range 8-40 V; maximum 40 V
16 Shutdown input External shutdown signal input; threshold 250-400 mV (nominal 350 mV); input range 0 to VIN

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package DIP-16
Category Power Management (PMIC)
Pins 16

CAD (KiCad official)

  • Symbol: UC3846N
  • Footprint: Package_DIP:DIP-16_W7.62mm
  • 3D model: DIP-16 (KiCad packages3D, STEP)
  • 3D model files: uc3846n-etched.step / uc3846n-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); uc3846n.step / uc3846n.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (24 pp, sha256 0d1e2750f80a16be, retrieved 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF