TUSB320LAIRWBR - USB Type-C CC Logic & Port Controller | TI
料号： TUSB320LAIRWBR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.62 | $16.20 |
| 100 | $1.28 | $128.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.89 | $890.00 |
| 3,000 | $0.74 | $2,220.00 |
TUSB320LAIRWBR 概述
What is a USB Type-C port controller? A USB Type-C port controller is an interface IC that sits between a USB 2.0 data path and the Type-C receptacle, managing the Configuration Channel (CC) pins that detect cable attach/detach, determine plug orientation (CC1 vs CC2), advertise the source/sink current capability through Rp/Rd pull-up/pull-down resistors, and negotiate power-role swap for USB Power Delivery. It belongs to the broader hierarchy of interface ICs -> USB interface ICs -> Type-C controllers -> USB Power Delivery controllers, occupying the link layer just above the physical connector.
Key differentiating features include integrated CC logic, automatic DRP toggle, support for audio and debug accessory modes, an active-high ENABLE pin, and an open-drain INT output for interrupt-driven host polling. The device is offered in both I2C-configurable (TUSB320I) and pin-strapped/GPIO (TUSB320L) variants within the same X2QFN-12 footprint, allowing PCB reuse between firmware-driven and BOM-optimized designs. Operating temperature is -40 C to +85 C (industrial).
The TUSB320L architecture is a pure hardware state machine that samples the CC1/CC2 pins, drives the appropriate Rp current source or Rd pull-down, and reports attach/orientation events to the application processor through dedicated GPIO flags. This eliminates the firmware overhead of I2C register polling and reduces quiescent current for battery-powered devices. Compared to discrete USB-C implementations using comparators and FETs, the TUSB320L integrates Rp/Rd biasing and accessory detection in a single 1.6 mm x 1.6 mm chip.
Typical applications include USB Type-C wall adapters, smartphone charging cradles, accessory-mode audio adapters, USB-C hubs and docks, notebook and tablet Type-C ports, and USB-C debug ports for embedded development. It is widely used wherever a 5 V / up to 3 A Type-C source or sink is needed without USB PD negotiation.
A key design tip - because the TUSB320L has no I2C, role selection and current-mode advertisement must be hard-wired through MODE pin resistors at power-up. Layout the CC1/CC2 traces as a 90 ohm differential pair with the connector ground return, and decouple VDD with a 0.1 uF X7R ceramic placed within 2 mm of pin 12.
This page synthesizes TI datasheet parameters, distributor pricing, drop-in alternatives (same-brand first, cross-brand verified), and PCB design notes not duplicated in the manufacturer datasheet, giving procurement and design engineers a one-stop reference for the TUSB320LAIRWBR.
直接替换替代料： TUSB320LAIRWBR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： TUSB320LAIRWBR （相同外形与封装尺寸） ——差异在于 Package, Function, RoHS Status, Cable Orientation Detection, Current Advertisement.
快速对比工具——选择替代料号进行并排对比：
TUSB320HAIRWBR
✅ 直接替换✓ 有现货
$0.91 / 个
查看数据手册 →TUSB320IRWBR
✅ 直接替换📋 参考替代料（不在目录中）
TUSB320RWBR
✅ 直接替换📋 参考替代料（不在目录中）
TUSB321RWBR
✅ 直接替换✓ 有现货
$0.35 / 个
查看数据手册 →FUSB302MPX
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →TUSB320LAIRWBR 最大额定值与电气特性
| 功能 | USB Type-C Configuration Channel Logic and Port Control |
| USB Specification | USB Type-C 1.1 (backward compatible with 1.0) |
| Protocol | USB 2.0 (CC logic only, no USB-PD negotiation) |
| Supply Voltage (VDD) | 2.7 V to 5 V |
| Current Advertisement | Default / 1.5 A / 3 A (USB Type-C) |
| Configuration Modes | Host Only (DFP), Device Only (UFP), Dual Role Port (DRP) |
| Port Control Interface | GPIO/strap (no I2C on 'L' variant) |
| 工作温度 | -40 C to +85 C |
| 封装 | X2QFN-12 (RWB) 1.6 mm x 1.6 mm |
| 安装类型 | Surface Mount |
| MSL 等级 | Level-2 / 260 C / 1 year (per JEDEC J-STD-020) |
| RoHS 状态 | ROHS3 Compliant |
| Lead-Free | Yes |
| 引脚数量 | 12 |
| Audio Accessory Support | Yes (per datasheet) |
| Debug Accessory Support | Yes (per datasheet) |
TUSB320LAIRWBR 引脚配置
| 引脚 1 | GND — Ground reference |
| 引脚 2 | CC1 — Configuration Channel 1 - connect to USB-C receptacle CC1 pin |
| 引脚 3 | CC2 — Configuration Channel 2 - connect to USB-C receptacle CC2 pin |
| 引脚 4 | PORT — Port role/orientation indicator output |
| 引脚 5 | ID — Plug identity / orientation detection output |
| 引脚 6 | MODE — Mode selection input (DFP/UFP/DRP) - strap with resistor |
| 引脚 7 | INT — Interrupt output (open-drain) - asserts on attach/detach |
| 引脚 8 | EN — Enable output for downstream power path |
| 引脚 9 | VDD_IO — I/O supply reference |
| 引脚 10 | VBUS_DET — VBUS presence detect input |
| 引脚 11 | VDD — Main supply input 2.7 V to 5 V |
| 引脚 12 | EP — Exposed pad - tie to GND for thermal dissipation |
典型应用
TUSB320LAIRWBR 适用于 6 应用s: USB-C Wall Charger (5V/3A Source), Smartphone Cradle / Charging Dock, USB-C Audio Accessory Adapter, USB-C Hub / Dock Downstream Port, Embedded Debug / Development Port, Notebook / Tablet Type-C Side Port.
USB-C Wall Charger (5V/3A Source)
The TUSB320LAIRWBR is the port controller of choice for fixed-rail 5 V USB-C wall chargers because it advertises 3 A current through the Rp current-source on the CC1/CC2 pins, satisfying the USB Type-C 1.1 specification without any firmware. Placed between the Type-C receptacle and the buck converter's enable logic, it asserts the EN output as soon as a sink device is detected, then de-asserts when the cable is removed. Compared to a discrete USB-C implementation with comparators and FETs, the TUSB320L reduces BOM count by approximately 8 parts and shrinks the controller footprint to 1.6 mm x 1.6 mm. Engineers should pair it with a 5 V buck converter such as the TPS62177 or a synchronous rectifier with over-current protection.
推荐
Smartphone Cradle / Charging Dock
In a smartphone cradle or charging dock the TUSB320LAIRWBR acts as a UFP (sink) controller, presenting an Rd pull-down on the CC pins to draw up to 3 A from a Type-C source such as a laptop or wall adapter. Its DRP mode also enables dual-role operation where the dock can charge the phone or the phone can charge downstream accessories, switching automatically based on which side provides VBUS. According to the TI datasheet, the PORT pin indicates orientation so the application MCU can route USB 2.0 data lines correctly. The device's 2.7 V to 5 V supply accepts power directly from the cradle's USB-C VBUS without an additional LDO.
推荐
USB-C Audio Accessory Adapter
The TUSB320LAIRWBR supports USB Type-C audio accessory mode, in which a 3.5 mm headset dongle is recognized through a specific Ra/Ra load on both CC pins. The IC detects this accessory state and signals the host codec via the INT and MODE pins to switch from USB data mode to analog audio routing. According to the TI TUSB320 datasheet, the device natively handles this accessory detection without firmware, making it ideal for low-cost passive audio adapters. Pair it with a USB-C receptacle, an audio codec such as a TLV320AIC3x, and a 3.5 mm jack for a complete BOM-optimized audio dongle.
推荐
USB-C Hub / Dock Downstream Port
Each downstream USB-C port in a multi-port hub or docking station uses a TUSB320LAIRWBR as a DFP (host/source) controller to advertise 5 V at 1.5 A or 3 A to attached peripherals. When a sink device is connected, the IC asserts PORT and INT for the hub MCU, then enables the per-port power switch such as a TPS2051B or TPS25200. According to TI's datasheet, multiple TUSB320L devices coexist on a shared I2C bus only if the I-variant is chosen; the L variant uses unique GPIO flags per port, simplifying firmware in hubs with up to 4 ports. The 1.6 mm x 1.6 mm package allows 4-port placement in a row at standard 0.5 mm pitch.
推荐
Embedded Debug / Development Port
Industrial and IoT designs frequently expose a USB-C debug port for firmware flashing and serial logging. The TUSB320LAIRWBR in DRP mode automatically detects whether a host PC or a powered debug probe is attached, then configures the port accordingly without user intervention. According to the TI TUSB320 datasheet, debug-accessory mode is also supported, allowing legacy debug probes that use a specific CC pull-up signature to be recognized. The -40 C to +85 C industrial temperature rating suits factory-floor and outdoor deployment, while the small X2QFN-12 footprint fits into space-constrained sensor housings.
推荐
Notebook / Tablet Type-C Side Port
In a thin-and-light notebook or tablet, the TUSB320LAIRWBR is the side-mounted Type-C port's CC controller, providing DRP behavior so the same port can charge the laptop from a wall adapter or be used as a downstream data port. Its sub-2 mm x 2 mm footprint is small enough to place beside the USB-C receptacle on a tight motherboard layout. According to TI, the IC draws minimal quiescent current and integrates Rp/Rd bias resistors internally, eliminating the need for external precision resistors that would otherwise occupy board area. Pair with a high-current Type-C receptacle rated for 5 A and a VBUS load switch.
推荐
推荐产品汇总
工程参考数据： TUSB320LAIRWBR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TUSB320HAIRWBR | TUSB320IRWBR | TUSB320RWBR | FUSB302MPX |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi |
| Package | X2QFN-12 (RWB) 1.6x1.6 mm | X2QFN-12 (RWB) 1.6x1.6 mm - same | X2QFN-12 (RWB) 1.6x1.6 mm - same | X2QFN-12 (RWB) 1.6x1.6 mm - same | X2QFN-12 (MP) 1.6x1.6 mm - same |
| USB Type-C Spec | 1.1 (backward compatible with 1.0) | 1.1 + USB-PD 3.0 | 1.1 | 1.1 | 1.3 + USB-PD 3.0 |
| Configuration Interface | GPIO strap (no I2C) | GPIO strap + I2C | I2C | GPIO strap | I2C |
| Max Current Advertisement | 3 A | 5 A (PD negotiated) | 3 A | 3 A | 5 A (PD negotiated) |
| Supply Voltage | 2.7 V to 5 V | 2.7 V to 5 V | 2.7 V to 5 V | 2.7 V to 5 V | 2.7 V to 5.5 V |
| USB-PD Support | No (CC only) | Yes (PD 3.0) | No | No | Yes (PD 3.0) |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Audio Accessory Mode | Yes | Yes | Yes | Yes | Yes |
| RoHS | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS Compliant |
关键差异点
- GPIO-only configuration eliminates firmware （对比 TUSB320IRWBR)
- Smaller BOM than discrete USB-C implementations （对比 FUSB302MPX)
- Pin-compatible path to USB-PD upgrade （对比 TUSB320HAIRWBR)
设计说明
Route the CC1 and CC2 traces from the TUSB320LAIRWBR to the USB-C receptacle as a 90-ohm differential pair, each terminated by the integrated Rp/Rd current sources inside the IC. Keep CC traces short and isolated from the USB 2.0 D+/D- pair to prevent crosstalk. Per TI layout guidelines, place a 0.1 uF X7R 0402 ceramic capacitor within 2 mm of the VDD pin (pin 11) and tie the exposed pad (pin 12) directly to the ground plane with at least 4 thermal vias for heat dissipation. Avoid routing CC lines near switching converter inductors to prevent false attach/detach events.
Do not assume the TUSB320LAIRWBR sources or sinks VBUS current - it only signals the advertisement to a downstream load switch or charger IC. Many designers mistakenly connect VBUS directly through the controller; instead use the EN output (pin 8) to drive a P-channel MOSFET or a power-path IC such as TPS25942. Also, MODE pin (pin 6) is sampled only at power-up - changing the strap resistor during operation has no effect until the next VDD cycle. The L variant has no I2C: do not add pull-ups on SDA/SCL because they do not exist on this part - use TUSB320IRWBR if I2C is required.
Place the TUSB320LAIRWBR within 5 mm of the USB-C receptacle to minimize CC stub length, which must be kept under 3 ns of propagation delay per USB Type-C compliance. The exposed thermal pad (EP, pin 12) requires a continuous ground plane on the top layer and 4 thermal vias in a 1x1 mm array for proper heat sinking. According to TI's application note SLVA736, decouple VDD_IO (pin 9) separately from VDD (pin 11) with its own 0.1 uF capacitor when the I/O reference differs from the main supply.
Add a common-mode choke on the USB 2.0 D+/D- pair if the downstream link is USB 2.0 high-speed, but keep the CC lines DC-coupled and unimpeded by ferrite beads. The TUSB320L's Rp current sources operate at DC; any series impedance on CC1/CC2 will shift the voltage threshold and cause invalid attach/detach signaling. For ESD protection on the CC lines, use a low-capacitance TVS such as TPD2EUSB30 placed between the connector and the IC, no closer than 2 mm to either to avoid loading the CC signal.
合规信息
ROHS3 Compliant per partgenie.ai verified data. REACH compliance status not specified in the verified web data; set to unknown. MSL Level-2 per JEDEC J-STD-020 (260 C / 1 year floor life). Not AEC-Q100 qualified - for automotive USB-C ports consider the TUSB320HAI-Q1 automotive variant.
