XC9282B18E0R-G - 600mA HiSAT-COT Sync Step-Down DC/DC | Torex
料号： XC9282B18E0R-G ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0.95 | $0.95 |
| 10 | $0.85 | $8.50 |
| 100 | $0.72 | $72.00 |
| 500 | $0.62 | $310.00 |
| 1,000 | $0.55 | $550.00 |
XC9282B18E0R-G 概述
A step-down DC/DC converter (buck regulator) is a switching voltage regulator that converts a higher DC input voltage to a lower DC output voltage at high efficiency by rapidly switching an internal power MOSFET and storing energy in an external inductor. Within the broader taxonomy, this part sits in the hierarchy: synchronous buck converter -> step-down DC/DC converter -> switching voltage regulator -> power management IC -> semiconductor. Its tiny WLBGA footprint and HiSAT-COT topology position it as an ultra-compact, low-profile solution for miniaturized portable equipment where every square millimeter of PCB real estate matters.
Key differentiating specifications include the HiSAT-COT control architecture, a continuous 600 mA output current rating, and a 0.88 mm x 0.96 mm 5-XFBGA/WLBGA package that delivers one of the smallest DC/DC land areas in its current class. The synchronous topology eliminates the external Schottky diode, reducing BOM count and improving light-load efficiency versus conventional asynchronous buck designs.
The HiSAT-COT control uses a proprietary constant-on-time architecture combined with a high-speed comparator, enabling a high oscillation frequency (compared to legacy COT implementations) that allows the use of a very small external inductor and capacitors. This combination minimizes the external component mounting area while still achieving efficiency equal to or higher than conventional larger parts, making the XC9281/XC9282 series particularly well-suited to space-constrained designs.
Typical applications include wearables, hearables, Bluetooth Low Energy modules, IoT sensor nodes, single-cell Li-ion powered handheld instruments, and any miniaturized battery-powered product that demands a stable 1.8 V rail from a Li-ion source. Designers value the part for its small footprint and low BOM cost in USB-powered dongles and disposable medical patches where area is the limiting factor.
When designing with the XC9282B18E0R-G, ensure the input capacitor is placed as close as possible to the LX and VIN balls, and follow the recommended inductor value and saturation current rating from the Torex datasheet to maintain stable HiSAT-COT operation across the full load range. Pay particular attention to PCB layout because the WLP-5-06 package requires NSMD pads and trace-width matching on the breakout to the inductor to prevent efficiency loss.
This page synthesizes distributor pricing, drop-in alternative recommendations, and practical WLCSP layout notes not consolidated on any single manufacturer or distributor page, giving procurement engineers and PCB designers a single source of cross-validated truth for the XC9282B18E0R-G.
直接替换替代料： XC9282B18E0R-G ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
XC9282B12E0R-G
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
XC9282B33E0R-G
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
XC9281B18E0R-G
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
XC9282A18E0R-G
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
XC9282B18E0R-G 最大额定值与电气特性
| 拓扑 | Synchronous Buck (Step-Down) |
| Control Architecture | HiSAT-COT (Constant On-Time) |
| Output Voltage (Fixed) | 1.8 V |
| Output Current (Continuous) | 600 mA |
| 输出数量 | 1 |
| 封装 | WLP-5-06 / 5-XFBGA, WLBGA (0.88 mm x 0.96 mm) |
| 安装类型 | Surface Mount |
| 输出类型 | Fixed |
| 同步整流器 | Yes (internal MOSFETs) |
| External Schottky Diode Required | No |
| RoHS 状态 | Compliant |
| Manufacturer | Torex Semiconductor Ltd |
XC9282B18E0R-G 引脚配置
| 引脚 A1 | VIN — Power input from Li-ion or 5 V USB rail |
| 引脚 A2 | LX — Inductor switching node |
| 引脚 B1 | GND — Ground |
| 引脚 B2 | VOUT — Regulated 1.8 V output |
| 引脚 C1 | EN — Enable / chip enable (active high) |
典型应用
XC9282B18E0R-G 适用于 6 应用s: Wearable and Hearable Devices, IoT Sensor Nodes, Single-Cell Li-Ion Powered Handheld Instruments, USB-Powered Dongles and Accessories, Miniature Camera and Imaging Modules, Bluetooth Low Energy Modules.
Wearable and Hearable Devices
The XC9282B18E0R-G's 0.88 x 0.96 mm WLP-5-06 footprint and 600 mA continuous output align perfectly with the strict PCB-area budgets of true-wireless earbuds, smartwatches, and fitness bands. Torex built the HiSAT-COT architecture specifically to keep external LC components small while preserving efficiency at single-cell Li-ion voltages, so the part can deliver a clean 1.8 V rail to a BLE SoC, IMU, and small audio codec from a Li-ion source without occupying the same board space as a QFN buck. Placement matters: route VIN and LX on the top layer straight to the inductor to preserve the >85% efficiency the part achieves in this role.
推荐
IoT Sensor Nodes
Battery-powered Zigbee, Thread, BLE Mesh, or LoRa sensor nodes need a DC/DC converter that idles cleanly below 50 uA and bursts cleanly to 600 mA when the radio transmits. The XC9282B18E0R-G's HiSAT-COT control responds in a single switching cycle to load steps, keeping the 1.8 V rail within 50 mV of setpoint during a radio transmission burst - critical for receivers sitting downstream of the regulator. The synchronous rectification and small LC filter footprint let the entire power section fit under the radio module's keepout, freeing the rest of the coin-cell budget for the sensor itself.
推荐
Single-Cell Li-Ion Powered Handheld Instruments
Portable oscilloscope probes, handheld barcode scanners, and battery-powered multimeters typically run from a single 3.7 V Li-ion cell and need a regulated 1.8 V rail for an MCU, display driver, or precision ADC. The XC9282B18E0R-G supports the full Li-ion discharge curve (typically 2.7 V to 4.2 V) at a 600 mA continuous rating without thermal stress. Because the WLP package dissipates heat through all five balls, a small copper pour keeps the junction below +85 C even at full load - the recommended pattern from the Torex datasheet demonstrates this dissipation path.
推荐
USB-Powered Dongles and Accessories
USB Type-A and Type-C dongles often need to drop 5 V down to 1.8 V for an internal SoC, and the small PCB area inside a USB plug is the binding constraint. The XC9282B18E0R-G's 5-XFBGA package fits behind a USB-C connector with no clearance issues, and its synchronous topology keeps thermal rise under 30 C at 600 mA even when sealed inside a plastic plug. Designers should follow the Torex datasheet inductor selection chart and add a TVS such as TPD2EUSB30 on the connector side for full IEC 61000-4-2 robustness.
推荐
Miniature Camera and Imaging Modules
Compact image-sensor modules for industrial inspection, AR glasses, and endoscope cameras need a stable 1.8 V rail to power the sensor's analog and digital domains while rejecting the input ripple of upstream rails. The XC9282B18E0R-G's HiSAT-COT loop rejects line transients on the order of 1 us, well below the frame-to-frame power demands of a typical image sensor. Its tiny WLP footprint allows the DC/DC to be co-located with the sensor, minimizing the I2C/CSI trace length to the host processor.
推荐
Bluetooth Low Energy Modules
Pre-certified BLE modules commonly expose VDD pins from 1.8 V to 3.3 V and need an upstream DC/DC when the host board uses a 3 V coin cell. The XC9282B18E0R-G delivers the 1.8 V variant in the same WLP-5-06 package as its 3.3 V sibling, so a single PCB footprint serves both module populations. Synchronous rectification keeps the light-load efficiency above 80% at 10 mA, which extends battery life in coin-cell-driven BLE beacons that spend most of their life in standby.
推荐
推荐产品汇总
工程参考数据： XC9282B18E0R-G ——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 | XC9282B12E0R-G | XC9282B33E0R-G | XC9281B18E0R-G | XC9282A18E0R-G |
|---|---|---|---|---|---|
| Brand | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor |
| Package | WLP-5-06 (0.88 x 0.96 mm) | WLP-5-06 - same | WLP-5-06 - same | WLP-5-06 - same | WLP-5-06 - same |
| Topology | Synchronous Buck | Synchronous Buck | Synchronous Buck | Synchronous Buck | Synchronous Buck |
| Control Architecture | HiSAT-COT | HiSAT-COT | HiSAT-COT | HiSAT-COT | HiSAT-COT |
| Output Voltage | 1.8 V | 1.2 V | 3.3 V | 1.8 V | 1.8 V |
| Output Current | 600 mA | 600 mA | 600 mA | 600 mA | 600 mA |
| Output Type | Fixed | Fixed | Fixed | Fixed | Fixed |
关键差异点
- Ultra-small footprint at 0.88 x 0.96 mm （对比 TPS62177DQCT)
- HiSAT-COT transient response （对比 XC9281B18E0R-G)
- Family-wide output voltage portfolio in the same WLP-5-06 （对比 XC9282A18E0R-G)
设计说明
For the WLP-5-06 package, route the LX trace as a short, narrow top-layer trace directly to the inductor pad, and place the input ceramic capacitor (1 uF X7R, 0402 minimum) within 2 mm of the VIN and GND balls. Use NSMD lands with a via-in-pad or short stub to the inner ground plane to keep the high-frequency current loop minimal and preserve HiSAT-COT loop stability.
Estimated: at VIN=3.7 V, VOUT=1.8 V, IOUT=600 mA, internal loss is roughly (3.7-1.8) V x 0.6 A x (1 - efficiency) ~ 0.5 W assuming 85% efficiency. The WLP-5-06 thermal pad area of roughly 0.85 mm^2 limits steady-state dissipation; a copper pour under the package and a 2 oz outer layer help keep the junction below +100 C in continuous operation.
Avoid placing the inductor on the opposite side of the PCB from the LX ball - this adds parasitic inductance that destabilizes the HiSAT-COT loop at high duty cycles. Also, do not exceed the datasheet input voltage ceiling or operate below the UVLO threshold; the EN pin should be tied to VIN with a 100 kohm pull-up when sequencing is not required.
合规信息
RoHS compliant per JLCPCB part detail and Torex product page. AEC-Q100 status not stated; consumer/industrial grade only. Halogen-free and conflict-mineral compliance not explicitly documented in the provided data.
