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LTC3406ES5#TRPBF

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Analog Devices DC-DC Converters, TSOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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LTC3406ES5#TRPBF

Analog Devices · DC-DC Converters · TSOT-23-5

LTC3406ES5#TRPBF from Analog Devices, in a TSOT-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 Run control input: forcing it above 1.5V enables the part and forcing it below 0.3V shuts it down, with supply current under 1µA in shutdown; it must not be left floating.
2 GND power_in Ground pin, to which VIN must be closely decoupled with a 2.2µF or greater ceramic capacitor.
3 SW output Switch node connection to the inductor, tied to the drains of the internal main and synchronous power MOSFET switches; SW voltage is rated from -0.3V to (VIN + 0.3V) and peak SW sink and source current is 1.3A.
4 VIN power_in Main supply pin, which must be closely decoupled to GND (pin 2) with a 2.2µF or greater ceramic capacitor; the input voltage range is 2.5V to 5.5V.
5 VFB input Feedback pin (adjustable LTC3406 version) that receives the feedback voltage from an external resistive divider across the output, regulated to the 0.6V reference.

Key specifications

Parameter Value
Manufacturer Analog Devices
Package TSOT-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
Feedback Current IVFB -30 30 nA 2
VFB Regulated Feedback Voltage VFB 0.588 0.6 0.612 V TA = 25°C 2
VFB Regulated Feedback Voltage VFB 0.5865 0.6 0.6135 V 0°C ≤ TA ≤ 85°C 2
VFB Regulated Feedback Voltage VFB 0.585 0.6 0.615 V -40°C ≤ TA ≤ 85°C 2
Reference Voltage Line Regulation ΔVFB 0.04 0.4 %/V VIN = 2.5V to 5.5V 2
Peak Inductor Current IPK 0.75 1 1.25 A VIN = 3V, VFB = 0.5V or VOUT = 90%, Duty Cycle < 35% 2
Input Voltage Range VIN 2.5 5.5 V 2
Input DC Bias Current, Active Mode IS 300 400 µA VFB = 0.5V or VOUT = 90%, ILOAD = 0A 2
Input DC Bias Current, Sleep Mode IS 20 35 µA VFB = 0.62V or VOUT = 103%, ILOAD = 0A 2
Input DC Bias Current, Shutdown IS 0.1 1 µA VRUN = 0V, VIN = 4.2V 2
Oscillator Frequency fOSC 1.2 1.5 1.8 MHz VFB = 0.6V or VOUT = 100% 2
RDS(ON) of P-Channel FET RPFET 0.4 0.5 Ω ISW = 100mA 2
RDS(ON) of N-Channel FET RNFET 0.35 0.45 Ω ISW = -100mA 2
SW Leakage ILSW -1 0.01 1 µA VRUN = 0V, VSW = 0V or 5V, VIN = 5V 2
RUN Threshold VRUN 0.3 1 1.5 V 3
RUN Leakage Current IRUN -1 0.01 1 µA 3
Input Supply Voltage -0.3 6 V 2
RUN, VFB Voltages -0.3 V Maximum is VIN 2
SW Voltage -0.3 V Maximum is VIN + 0.3V 2
P-Channel Switch Source Current (DC) 800 mA 2
N-Channel Switch Sink Current (DC) 800 mA 2
Peak SW Sink and Source Current 1.3 A 2
Operating Temperature Range -40 85 °C 2
Junction Temperature 125 °C 2
Storage Temperature Range -65 150 °C 2
Lead Temperature (Soldering) 300 °C 10 sec 2
Thermal Resistance, Junction to Ambient θJA 250 °C/W TJMAX = 125°C 2
Thermal Resistance, Junction to Case θJC 90 °C/W TJMAX = 125°C 2

CAD (KiCad official)

  • Symbol: LTC3406ES5#TRPBF
  • Footprint: Package_TO_SOT_SMD:TSOT-23-5
  • 3D model: TSOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: ltc3406es5-trpbf-etched.step / ltc3406es5-trpbf-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ltc3406es5-trpbf.step / ltc3406es5-trpbf.glb are the bare package body.

Provenance

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

  • Datasheet: Analog Devices datasheet (16 pp, sha256 e205c3da0e20ff27, retrieved 2026-10-18, 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