component
HT2122ARTZ
Public Unreviewedby Ray
HTCSEMI Battery Management, SOT-23-6. Datasheet-verified pinout, 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
markdownHT2122ARTZ
HTCSEMI · Battery Management · SOT-23-6
HT2122ARTZ from HTCSEMI, in a SOT-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 | OD | output | Discharge-control MOSFET gate drive terminal. Drives the gate of the external N-channel discharge FET. High (~VDD-0.02 V) in normal state, pulled low (~0.2 V) to open the discharge path when an overdischarge or discharge-overcurrent event is detected. |
| 2 | OC | output | Charge-control MOSFET gate drive terminal. Drives the gate of the external N-channel charge FET. High (~VDD-0.02 V) in normal state, pulled low (~0.2 V) to open the charge path when an overcharge or charge-overcurrent event is detected. High level is pulled up to VDD; low level is pulled down to CS. |
| 3 | CS | input | Current-sense / charger-detect input terminal. Senses the voltage drop across the external charge/discharge MOSFETs to detect overcurrent, load short circuit, and charger insertion. High-voltage tolerant input, absolute max rating VDD-33 V to VDD+0.3 V (33 V tolerant). |
| 4 | VC | input | Cell balance / intermediate tap sense terminal. Connects to the negative terminal of battery cell 1 and the positive terminal of battery cell 2, allowing per-cell voltage monitoring of the 2-series LiFePO4 pack. Typically connected via a 330 Ω series resistor and 0.1 uF decoupling capacitor. |
| 5 | VDD | power_in | Positive supply input; connects to the positive terminal of battery cell 1 (top of the 2S stack). VDD-VSS operating range 1.5 V to 10 V, absolute max VSS-0.3 V to VSS+10 V. Typical operating current 5 uA, max 9 uA at VDD=6.4 V. |
| 6 | GND | power_in | Ground / negative supply input (VSS). Connects to the negative terminal of battery cell 2 (bottom of the 2S stack). Reference for all internal detection thresholds. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | HTCSEMI |
| Package | SOT-23-6 |
| Category | PMIC |
| Pins | 6 |
Ordering variants
Same part, different packaging or reel option.
HT2122ARTZ
CAD (KiCad official)
- Symbol:
HT2122ARTZ - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: HTCSEMI datasheet (15 pp, sha256
9442df04ff3e893e, retrieved 2026-08-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).