component
STUSB1600AQTR
Public Made by Adomby adom
STMicroelectronics Power Distribution Switches, QFN-24-EP(4x4). 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
markdownSTUSB1600AQTR
STMicroelectronics · Power Distribution Switches · QFN-24-EP(4x4)
STUSB1600AQTR from STMicroelectronics, in a QFN-24-EP(4x4). 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 | CC1DB | input | Dead-battery enable pull-down on CC1 pin, connect to CC1 or ground for dead-battery mode support (0 to 5.5 V operating) |
| 2 | CC1 | bidirectional | Type-C configuration channel 1 for attach detection, plug orientation, and system configuration with high voltage protection up to 22 V (0 to 5.5 V operating) |
| 3 | VCONN | power_in | Power input for active cable with integrated current-limited high-side power switches; 350 mA default, programmable 100-600 mA by 50 mA steps (2.7 to 5.5 V) |
| 4 | CC2 | bidirectional | Type-C configuration channel 2 for attach detection, plug orientation, and system configuration with high voltage protection up to 22 V (0 to 5.5 V operating) |
| 5 | CC2DB | input | Dead-battery enable pull-down on CC2 pin, connect to CC2 or ground for dead-battery mode support (0 to 5.5 V operating) |
| 6 | RESET | input | Active high reset input to initialize device logic and Type-C FSM (0 to 4.5 V operating) |
| 7 | SCL | input | I²C clock input requiring external pull-up resistor; up to 400 kHz fast mode (0 to 4.5 V operating) |
| 8 | SDA | tri_state | I²C open-drain data input/output, active low with external pull-up resistor required; up to 400 kHz fast mode (0 to 4.5 V operating) |
| 9 | ALERT# | tri_state | I²C interrupt, open-drain output active low indicating status changes in monitored registers with external pull-up required (0 to 4.5 V operating) |
| 10 | GND | power_in | Ground reference (0 V) |
| 11 | VBUS_VALID | tri_state | VBUS detection open-drain output, active low when VBUS voltage is within valid operating range; external pull-up required (0 to 4.5 V operating) |
| 12 | ATTACH | tri_state | Attachment detection open-drain output, active low when valid source-to-sink connection is established or accessory detected; external pull-up required (0 to 4.5 V operating) |
| 13 | ADDR0 | input | I²C device address selection input bit; low selects address 0x28, high selects address 0x29 for two-device configurations (0 to 4.5 V operating) |
| 14 | DEBUG1 | tri_state | Debug accessory detection in sink power role, open-drain output active low asserted when in DebugAccessory.SNK state; external pull-up required (0 to 4.5 V operating) |
| 15 | DEBUG2 | tri_state | Debug accessory detection in source power role, open-drain output active low asserted in UnorientedDebugAccessory.SRC or OrientedDebugAccessory.SRC states; external pull-up required (0 to 4.5 V operating) |
| 16 | NC | unconnected | No connection; reserved floating pin |
| 17 | A_B_SIDE | tri_state | Cable orientation open-drain output for USB SuperSpeed mux control: HiZ indicates CC1 attached, 0 indicates CC2 attached; external pull-up required (0 to 4.5 V operating) |
| 18 | VBUS_SENSE | input | High voltage analog input for VBUS voltage monitoring, discharge path control, and attachment detection in valid voltage range (0 to 22 V operating, 28 V absolute maximum) |
| 19 | VBUS_EN_SNK | tri_state | VBUS sink power path enable, open-drain output active low to drive external PMOS when connection established and VBUS valid (0 to 22 V operating, 28 V absolute maximum) |
| 20 | VBUS_EN_SRC | tri_state | VBUS source power path enable, open-drain output active low to drive external PMOS when connection established and VBUS valid (0 to 22 V operating, 28 V absolute maximum) |
| 21 | VREG_1V2 | power_out | 1.2 V internal regulator output; requires 1 µF typical decoupling capacitor (0.5 µF minimum, 10 µF maximum) |
| 22 | VSYS | power_in | Low power system supply input from battery or system power supply (3.0 to 5.5 V); connect to ground if not used |
| 23 | VREG_2V7 | power_out | 2.7 V internal regulator output; requires 1 µF typical decoupling capacitor (0.5 µF minimum, 10 µF maximum) |
| 24 | VDD | power_in | Main power supply from USB VBUS for high voltage domain; supports 4.1 to 22 V operating range with 28 V absolute maximum |
| 25 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | QFN-24-EP(4x4) |
| Category | Power Management (PMIC) |
| Pins | 25 |
CAD (KiCad official)
- Symbol:
STUSB1600AQTR - Footprint:
Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm - 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
stusb1600aqtr-etched.step/stusb1600aqtr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stusb1600aqtr.step/stusb1600aqtr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (66 pp, sha256
9211c19349c2e890, retrieved 2026-09-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).