XC6206P332MR - 3.3V 200mA CMOS LDO | Torex | SOT-23
MPN： XC6206P332MR ✓ 啟用中XC6206P332MR 概覽
An LDO (low-dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. LDOs belong to the broader class of linear regulators (as opposed to switching regulators), which in turn are categorized under voltage regulators within the power management IC family. Unlike a switching converter that chops the input to achieve high efficiency, a linear LDO simply dissipates the input-to-output voltage difference as heat, trading efficiency for ultra-low output noise and a small, inductor-free footprint.
Key differentiating specifications include a 1 µA quiescent current, low-ESR ceramic capacitor compatibility on the output, internal current limiting with fold-back short-circuit protection, and a wide operating temperature range suitable for battery-powered portable and industrial applications. The CMOS process combined with a precision bandgap reference yields tight output tolerance without requiring an external feedback network.
Architecturally, the device integrates a power pass transistor, an error amplifier, a bandgap reference, and protective circuitry on a single CMOS die. Because no minimum-ESR output capacitor is required, designers can use small 1 µF ceramic parts and keep the total solution footprint well below 10 mm². Quiescent current in the single-digit microampere range is critical for sleep-mode power budgets.
Typical applications include portable battery equipment (single-cell Li-ion to 3.3 V conversion), microcontroller and MCU core supply rails, low-power RF modules, IoT sensor nodes, and USB peripherals where a clean 3.3 V rail must be derived from a 5 V supply.
When designing with this part, derate power dissipation by VIN-VOUT times IOUT against the SOT-23 θJA of approximately 250 °C/W; above ~400 mW a copper pour larger than 100 mm² is advisable.
直接替換替代品，適用於 XC6206P332MR — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： XC6206P332MR （相同外形與佔位） — 差異在於 Package, Manufacturer, Maximum Output Current, Output Voltage, Dropout Voltage.
XC6206P302MR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
XC6206P182MR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
XC6206P252MR
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
XC6209B292MR-G
✅ 直接替換聯絡詢價
查看資料表 →XC6505B501MR-G
✅ 直接替換聯絡詢價
查看資料表 →TS2937CP33
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TS2940CW33
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →XC6206P332MR 最大額定值與電氣特性
| Manufacturer | Torex Semiconductor Ltd |
| Product Type | Linear Voltage Regulator (LDO), Positive Fixed |
| Output Voltage (Nominal) | 3.3 V |
| 輸出類型 | Fixed |
| 最大輸出電流 | 200 mA |
| Input Voltage Range (Max) | 1.8 V to 6 V |
| Absolute Maximum Input Voltage | 6.5 V |
| Dropout Voltage (Typical) | 250 mV at 200 mA |
| Quiescent Current (Typical) | 1 µA |
| Output Voltage Accuracy | ±2% (laser trimmed) |
| Line Regulation | 0.05 %/V (typical) |
| Load Regulation | 25 mV (typical) |
| Output Capacitor Requirement | 1 µF ceramic (low-ESR compatible) |
| Short-Circuit Protection | Current limiter with fold-back |
| 工作溫度 | -40 °C to +85 °C |
| 封裝 | SOT-23 (3 leads) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 1 (per JEDEC J-STD-020) |
| RoHS 狀態 | Compliant |
| Lead-Free Finish | Yes |
XC6206P332MR 腳位配置
| 腳位 1 | VIN — Input voltage supply (1.8 V to 6 V) |
| 腳位 2 | GND — Ground reference |
| 腳位 3 | VOUT — Regulated 3.3 V output (200 mA max) |
典型應用
XC6206P332MR 適用於 7 應用s: Single-Cell Li-Ion Battery Power, Microcontroller Core Rail, IoT Sensor Nodes, USB Peripherals (5 V to 3.3 V), BLE / Sub-GHz Wireless Modules, Handheld Test Instruments, Industrial Sensor Conditioning.
Single-Cell Li-Ion Battery Power
The XC6206P332MR regulates a Li-ion cell (3.0–4.2 V) down to a clean 3.3 V rail for host MCUs and radios. Its 1 µA quiescent current preserves battery standby time, while the 250 mV dropout keeps regulation viable down to approximately 3.55 V Vin. A 1 µF X5R ceramic on Vout is the only output component required, keeping the solution footprint under 10 mm² ideal for coin-cell and pouch-cell wearables.
推薦
Microcontroller Core Rail
Many 3.3 V MCUs require a low-noise rail for ADC accuracy and stable clock operation. The XC6206P332MR delivers 200 mA with 1 µA quiescent current, ensuring the rail stays alive during deep-sleep modes of an MCU such as the XMC1301. The low-ESR ceramic compatibility allows designers to mount the regulator adjacent to the MCU decoupling caps, keeping high-frequency ground currents local and clean.
推薦
IoT Sensor Nodes
Battery-powered IoT nodes need 3.3 V rails for sensors and sub-GHz radios with extreme power efficiency. The XC6206P332MR's 1 µA Iq adds negligible standby drain to a sleeping node, allowing years of shelf life on small coin cells. At load currents of 100 mA the dropout of 250 mV from a 3.6 V primary cell preserves regulation over most of the discharge curve. The SOT-23 footprint supports compact PCB layouts.
推薦
USB Peripherals (5 V to 3.3 V)
USB ports supply 5 V, but most modern peripherals need 3.3 V. The XC6206P332MR drops the 5 V USB rail to 3.3 V for low-current peripherals, with internal short-circuit protection safeguarding the device if the cable is faulty. At full 200 mA load, the regulator dissipates approximately 340 mW (5.0 - 3.3 = 1.7 V × 0.2 A), well within the SOT-23 thermal envelope below 100 mA. Above that, copper pours are recommended.
推薦
BLE / Sub-GHz Wireless Modules
Bluetooth Low Energy and sub-GHz radio modules typically operate from 3.3 V and draw peak transmit currents of 80-150 mA. The XC6206P332MR's 200 mA rating supports these peaks with margin, and the CMOS regulator's low output noise floor prevents spurious RF interference that could degrade receiver sensitivity. Bulk decoupling on the input stabilises the rail during transmit bursts without compromising the low-Iq sleep profile.
推薦
Handheld Test Instruments
Portable DMMs and oscilloscope probes require compact 3.3 V rails for ADCs and OLED displays. The XC6206P332MR fits the role with 200 mA capacity, ceramic-capacitor compatibility, and a tiny SOT-23 footprint that preserves layout density around the display. The fold-back short-circuit protection prevents board damage if a probe contact creates a momentary short, an important reliability feature for field-test gear that sees mechanical wear.
推薦
Industrial Sensor Conditioning
Industrial 4 mA-to-20 mA loops and PLC sensor interfaces commonly operate from a 5 V or 12 V rail and need a quiet 3.3 V for ADC conditioning. The XC6206P332MR with 6.5 V absolute maximum can survive 12 V transients when paired with upstream protection. Its operating range of -40 °C to +85 °C covers the bulk of factory-floor deployments, and the CMOS low-noise architecture preserves the linearity of downstream 16-/24-bit ADCs.
推薦
推薦產品摘要
工程參考資料，適用於 XC6206P332MR — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | XC6206P302MR | XC6206P182MR | XC6209B292MR-G | XC6505B501MR-G | TS2937CP33 |
|---|---|---|---|---|---|---|
| Brand | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Torex Semiconductor | Microchip Technology |
| Package | SOT-23 (3-pin) | SOT-23 (3-pin) - same | SOT-23 (3-pin) - same | SOT-23 (3-pin) - same | SOT-23 (3-pin) - same | SOT-23 (3-pin) - same |
| Output Voltage | 3.3 V | 3.0 V | 1.8 V | 2.9 V | 5.0 V | 3.3 V |
| Maximum Output Current | 200 mA | 200 mA | 200 mA | 300 mA | 200 mA | 500 mA |
| Input Voltage Range (Max) | 1.8 V to 6 V | 1.8 V to 6 V | 1.8 V to 6 V | Up to 6 V | Up to 6 V | Up to 8 V |
| Output Capacitor | 1 µF ceramic (low-ESR) | 1 µF ceramic | 1 µF ceramic | 1 µF ceramic | 1 µF ceramic | 10 µF (higher ESR) |
主要差異化特點
- Lower quiescent current than most alternatives (對比XC6209B292MR-G)
- Ceramic-capacitor stability without ESR penalty (對比TS2937CP33)
- Wide Vout selection in same footprint (對比XC6206P182MR)
- Drop-in pin compatibility with Torex LDOs (對比XC6505B501MR-G)
設計說明
Estimated: at VIN = 5 V, VOUT = 3.3 V, and IOUT = 200 mA the regulator dissipates (5.0 - 3.3) × 0.2 = 0.34 W. The SOT-23 θJA is approximately 250 °C/W on a 1 oz 25 mm² copper pour, yielding a junction temperature rise of 85 °C. At 25 °C ambient the junction reaches 110 °C, near but within the 125 °C limit. For loads above 100 mA, increase the copper pour to at least 100 mm² or reduce the input-to-output differential to keep Tj below 100 °C.
Place the 1 µF X5R/X7R ceramic input and output capacitors as close as possible to the VIN and VOUT pins, respectively, and tie the GND lead directly to a large ground pour. The SOT-23 thermal pad/large lead is internally bonded to GND; routing the ground plane through this tab gives the lowest thermal resistance. Keep high-current traces short and wide to minimise voltage drops during dynamic load transients.
Do not operate the input above the 6.5 V absolute-maximum; although the part survives brief 7 V transients, continuous exposure damages the CMOS pass transistor. Avoid placing switching regulators with 100 mV/nanosecond edges within 5 mm of the LDO to prevent conducted noise coupling. Also avoid using a polarised aluminium or tantalum output cap with ESR above 0.5 Ω - the XC6206P332MR is ceramic-stable and may oscillate with high-ESR loads.
For battery-powered designs, calculate worst-case quiescent drain: Iq × time_in_active_state = battery drain. At 1 µA Iq and a 100 mAh CR2032 cell the regulator alone delivers ~11 years of theoretical standby - more than enough headroom for years-long IoT nodes. In high-current bursts, however, the drop from a 3.0 V Li-ion to 3.3 V triggers dropout, so include a path-disconnect load switch if extended operation below 3.5 V is required.
合規資訊
RoHS and lead-free finish confirmed by Torex product page and DigiKey listings as of last_verified_date. Halogen-free status not explicitly stated in available data - marked unknown. AEC-Q100 not applicable for this consumer/industrial-grade part.
