component
HT6311ARTZ
Public Made by Adomby adom
HTCSEMI DC-DC Converters, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownHT6311ARTZ
HTCSEMI · DC-DC Converters · SOT-23-5
HT6311ARTZ from HTCSEMI, 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 | SW | output | Switch output that connects to the inductor and the Schottky diode; the SW voltage rating is -0.3 to 30 V, and the trace to the input bypass capacitor should be kept short to reduce EMI. |
| 2 | G | power_in | Ground reference for the device; the datasheet asks that the feedback resistor R1 connect directly to this pin and that a ground plane sit under the regulator. |
| 3 | FB | input | Feedback input regulated to the 1.24 V reference (VFB 1.18 to 1.30 V at VIN = 3 V), with a maximum FB input current of 50 nA. |
| 4 | SHDN | input | Shutdown control: a logic high (at least 1.6 V) enables the device, a logic low (at most 0.4 V) disables it, and the pin must never be left unconnected. |
| 5 | IN | power_in | Supply input with a 2.5 to 5.5 V input range, bypassed to G with a 1 µF or larger capacitor. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| 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 Voltage Range | 2.5 | 5.5 | V | 3 | |||
| IN, SHDN Voltage | -0.3 | 6 | V | 3 | |||
| SW Voltage | -0.3 | 30 | V | 3 | |||
| FB Voltage | -0.3 | V | 3 | ||||
| Maximum Power Dissipation | 0.4 | W | derate 5mW/°C above TA = 50°C | 3 | |||
| Operating Junction Temperature | -40 | 150 | °C | 3 | |||
| Lead Temperature | 300 | °C | Soldering, 10 sec | 3 | |||
| Feedback Voltage | VFB | 1.18 | 1.24 | 1.3 | V | VIN = 3V | 3 |
| FB Input Current | 50 | nA | 3 | ||||
| Supply Current | 0.7 | 1.5 | mA | SHDN = IN | 3 | ||
| Supply Current in Shutdown | 0 | 1 | µA | SHDN = G | 3 | ||
| Switching Frequency | fSW | 0.8 | 1 | 1.2 | MHz | 3 | |
| Maximum Duty Cycle | DMAX | 80 | 85 | % | 3 | ||
| Switch Current Limit | ILIM | 320 | mA | 75% Duty Cycle | 3 | ||
| Switch On Voltage | 350 | mV | ISW = 200mA | 3 | |||
| Switch Leakage Current | 10 | µA | VSW = 20V, SHDN = G | 3 | |||
| SHDN Logic High Threshold | 1.6 | V | 3 | ||||
| SHDN Logic Low Threshold | 0.4 | V | 3 | ||||
| SHDN Input Current | 0 | 1 | µA | 3 | |||
| Junction to Ambient Thermal Resistance | θJA | 190 | °C/W | Junction to Ambient | 3 |
CAD (KiCad official)
- Symbol:
HT6311ARTZ - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
ht6311artz-etched.step/ht6311artz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ht6311artz.step/ht6311artz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTCSEMI datasheet (10 pp, sha256
29c95d9145f9fc9b, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).