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Contents

README

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FP6161KR-LF-ADJ

Advanced Analog Technology · DC-DC Converters · SOT-23-5

FP6161KR-LF-ADJ from Advanced Analog Technology, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 RUN input Enable pin; the RUN threshold is 0.3 to 1.5V (1V typical), and the RUN leakage current is ±1µA maximum.
2 GND power_in Ground pin; the input and output capacitor ground connections should be kept as close as possible and tied to the ground plane with several vias.
3 SW output Switch node connected to the internal P-channel and N-channel MOSFETs; DC switch current is limited to 1.5A and AC peak to 2A, and the pin goes high-impedance during short-circuit protection.
4 VIN power_in Power supply input, operating from 2.5V to 5.5V with an absolute maximum of 6V, and it should be decoupled close to the pin with a low-ESR input capacitor.
5 FB / VOUT input Feedback pin with a 0.6V reference (±2%); in the adjustable version the output divider R1/R2 connects here directly, and FB dropping below 300mV triggers short-circuit protection.

Key specifications

Parameter Value
Manufacturer Advanced Analog Technology
Package SOT-23-5
Category Power Management (PMIC)
Pins 5

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Input Supply Voltage VIN -0.3 6 V 4
RUN, VFB, SW Pin Voltage -0.3 V 4
P-Channel Switch Source Current (DC) 1.5 A 4
N-Channel Switch Source Current (DC) 1.5 A 4
Peak SW Switch Sink and Source Current (AC) 2 A 4
Allowable Power Dissipation, SOT23-5L PD 500 mW 4
Lead Temperature 260 °C soldering, 10 sec 4
Junction Temperature 150 °C 4
Storage Temperature -65 150 °C 4
Thermal Resistance (Junction to Ambient), SOT23-5L θJA 250 °C / W 4
Thermal Resistance (Junction to Case), SOT23-5L θJC 90 °C / W 4
Supply Voltage VIN 2.5 5.5 V 5
Operating Temperature -40 85 °C 5
Regulated Feedback Voltage VFB 0.588 0.6 0.612 V TA=25°C 5
Regulated Feedback Voltage VFB 0.582 0.6 0.618 V -40°C ~+85°C 5
Line Regulation with VREF VFB 0.04 0.4 / V VIN=2.5V to 5.5V 5
Output Voltage Line Regulation VOUT 0.04 0.4 % / V VIN=2.5 to 5.5V 5
RDS (ON) of P-Channel FET RDS(ON)P 0.28 0.35 Ω ISW=100mA 5
RDS (ON) of N-Channel FET RDS(ON)N 0.25 0.32 Ω ISW =-100mA 5
SW Leakage ILSW -1 0.01 1 µA VRUN=0V, VIN=5V 5
Peak Inductor Current IPK 1.125 1.5 1.875 A VFB=0.5V 5
Quiescent Current, Shutdown ICC 0.1 1 µA Shutdown, VRUN=0V 5
RUN Threshold VRUN 0.3 1 1.5 V 5
RUN Leakage Current IRUN -1 0.01 1 µA 5
Oscillator Frequency FOSC 1.2 1.5 1.8 MHz VFB=0.6V 5
Quiescent Current, Active ICC 100 µA Active, VFB=0.5V, VRUN=VIN 5

CAD (KiCad official)

  • Symbol: FP6161KR-LF-ADJ
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: fp6161kr-lf-adj-etched.step / fp6161kr-lf-adj-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fp6161kr-lf-adj.step / fp6161kr-lf-adj.glb are the bare package body.

Provenance

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

  • Datasheet: Advanced Analog Technology datasheet (16 pp, sha256 57d16b398207d125, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (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