# HL6601

**HICHON** · Battery Management ICs · SOT-23-6

HL6601 from HICHON, in a SOT-23-6. 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 | D+ | bidirectional | USB D+ line, connected to the D+ pin of the USB Type-A port; absolute maximum rating for D+ and D- is -0.3 V to 14 V. |
| 2 | GND | power_in | Chip ground, connected to the system ground. |
| 3 | FB | bidirectional | Current feedback control pin, connected to the feedback point of the power supply; HL6601 sources or sinks FB current to set the output voltage (FB voltage output range 0.4 V to 1.5 V). |
| 4 | QC_EN | input | Fast-charge control pin that sets the maximum requestable voltage: tied to VDD allows up to 12 V, floating allows up to 20 V, 200 kΩ to GND allows up to 9 V, and tied to GND stops QC3.0/QC2.0, FCP, AFC and SCP requests so only 5 V is output; absolute maximum rating is -0.3 V to 6 V. |
| 5 | VDD | power_in | Chip supply pin with an operating range of 3.3 V to 5.5 V and an absolute maximum rating of -0.3 V to 6 V. |
| 6 | D- | bidirectional | USB D- line, connected to the D- pin of the USB Type-A port; absolute maximum rating for D+ and D- is -0.3 V to 14 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HICHON |
| Package | SOT-23-6 |
| Category | Power Supply Chip |
| Pins | 6 |

## Electrical characteristics

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

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VDD supply voltage (absolute maximum) | VDD | -0.3 |  | 6 | V |  | 2 |
| QC_EN, FB voltage (absolute maximum) | QC_EN,FB | -0.3 |  | 6 | V |  | 2 |
| D+, D- voltage (absolute maximum) | D+,D- | -0.3 |  | 14 | V |  | 2 |
| Operating temperature (absolute maximum) | TOP | -40 |  | 105 | ℃ |  | 2 |
| Storage temperature (absolute maximum) | TSTG | -60 |  | 150 | ℃ |  | 2 |
| Operating supply voltage range (recommended) | VCC | 3.3 |  | 5.5 | V |  | 2 |
| Input voltage range | VDD | 3.3 |  | 5.5 | V |  | 3 |
| VDD undervoltage lockout threshold | VULVO | 3 |  | 3.1 | V | VDD falling | 3 |
| VDD input current | IQ |  | 75 | 95 | μA | VDD=5V, measure VDD current | 3 |
| VDD clamp voltage | VDD | 5 | 5.25 | 5.5 | V | IVDD=3mA | 3 |
| Data detection voltage threshold | VDATA_REF | 0.25 | 0.325 | 0.4 | V |  | 3 |
| Output voltage select reference voltage | VSEL_REF | 1.8 | 2 | 2.2 | V |  | 3 |
| D+ high glitch time | TGLITCH(BC)_D+_H | 1000 | 1250 | 1500 | ms |  | 3 |
| Output voltage glitch time | TGLITCH(V)_CHANGE | 20 | 40 | 60 | ms |  | 3 |
| Continuous mode glitch time | TGLITCH_CONT_CHANGE | 100 |  | 200 | μs |  | 3 |
| D- low glitch time | TGLITCH(BC)_D-_H |  | 2 |  | ms |  | 3 |
| D- pull-down resistance | RD-_DOWN |  | 20 |  | kΩ |  | 3 |
| D+ pull-down resistance (leakage) | RDAT_LKG |  | 500 |  | kΩ | VD+=0.6V~3.6V; D+/D- short switch off | 3 |
| D+/D- short switch on-resistance | RDS_ON_N1 |  | 40 |  | Ω | VDD=5V, switch current 200μA | 3 |
| FB current step | IUP, IDOWN |  | 2 |  | μA | IUP=40μA(9V), 70μA(12V); IDOWN=14μA(3.6V) | 3 |
| FB voltage output range | VFB | 0.4 |  | 1.5 | V |  | 3 |
| Apple 2.4A D+/D- output voltage |  | 2.57 | 2.7 | 2.84 | V |  | 3 |
| Apple 2.4A D+/D- output impedance |  |  | 30 |  | kΩ |  | 3 |

## CAD (KiCad official)

- Symbol: `HL6601`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `hl6601-etched.step` / `hl6601-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `hl6601.step` / `hl6601.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HICHON datasheet](docs/hl6601-datasheet.pdf) (6 pp, sha256 `8ec75a870933b22b`, retrieved 2026-10-21, 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:** 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](docs/hl6601-datasheet.pdf)