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LTC3803IS6#TRPBF

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by Ray

Analog Devices AC-DC Controllers And Regulators, TSOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpower management (pmic)ltc3803is6#trpbf
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Datasheet

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Contents

README

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LTC3803IS6#TRPBF

Analog Devices · AC-DC Controllers And Regulators · TSOT-23-6

LTC3803IS6#TRPBF from Analog Devices, in a TSOT-23-6. 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 ITH/RUN bidirectional Dual-function pin: error amplifier compensation node and run/shutdown control input. Nominal operating range 0.7V to 1.9V. Forcing this pin below the shutdown threshold VITHSHDN (nominally 0.28V) puts the LTC3803 into shutdown with NGATE held low. An internal 0.3µA source pulls the pin toward VCC.
2 GND power_in Device ground reference. Return for VCC bypass and current sense circuitry.
3 VFB input Feedback voltage input to the error amplifier. Receives a scaled version of the output through an external resistive divider; regulates to the internal 800mV reference (±1.5%).
4 SENSE input Current sense input. Monitors the voltage across an external ground-referenced sense resistor to determine primary switch current (peak sense voltage nominally 100mV). Also sources a ~5µA slope-compensation current ramp for adjustable slope compensation via an optional external resistor (RSL).
5 VCC power_in Supply pin. Internally shunt-regulated to ~9.5V (VCLAMP), draws up to 25mA into shunt; UVLO turn-on ~8.7V, turn-off ~5.7V. Must be bypassed to GND with at least 10µF ceramic or tantalum immediately adjacent to the IC. Absolute maximum 8V from a low-impedance source, or 25mA fed into VCC via a resistor to a higher rail.
6 NGATE output Gate drive output for the external N-channel power MOSFET. Rail-to-rail swing from 0V to VCC; peak output current up to 1A (<10µs). Rise/fall times ~40ns into 3000pF load.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package TSOT-23-6
Category Power Management (PMIC)
Pins 6

Ordering variants

Same part, different packaging or reel option.

  • LTC3803IS6#TRPBF
  • LTC3803ES6#TRPBF
  • LTC3803HS6#TRPBF
  • LTC3803MPS6#TRPBF
  • LTC3803ES6#TR
  • LTC3803HS6#TR
  • LTC3803MPS6#TR

CAD (KiCad official)

  • Symbol: LTC3803IS6#TRPBF
  • Footprint: Package_TO_SOT_SMD:TSOT-23-6
  • 3D model: TSOT-23-6 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Analog Devices datasheet (16 pp, sha256 d1656d1fcad77872, retrieved 2026-08-17, tier: lcsc)
  • 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