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Toshiba Semiconductor and Storage TCR2LN18,LF
- Part No.:
- TCR2LN18,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TCR2LN18,LF.pdf
- Description:
- IC REG LINEAR 1.8V 200MA 4SDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,006
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Product details
Overview
TCR2LN18,LF from Toshiba Electronic Devices & Storage Corporation is a 1.8 V fixed-output CMOS low dropout (LDO) voltage regulator with ultra-low quiescent current (2 μA max), 200 mA output capability, and 350 mV typical dropout at 150 mA load. It features overcurrent protection, auto-discharge, and operates in the SDFN4 package (0.8 mm × 0.8 mm × 0.38 mm), targeting space-constrained portable electronics.
For engineers reviewing the TCR2LN18,LF datasheet, TCR2LN18,LF pinout, TCR2LN18,LF application, or TCR2LN18,LF equivalent, key selection considerations include its ±1.0% output accuracy at 1.8 V, ceramic capacitor compatibility (0.1 μF input/output), control-input logic interface, and thermal performance under high-density PCB layouts.
Technical Context
The TCR2LN18,LF integrates a CMOS pass transistor with internal biasing optimized for sub-2 μA quiescent operation across −40°C to +85°C. Its on/off control input accepts TTL-compatible logic levels (VCT(OFF) ≤ 0.4 V, VCT(ON) ≥ 1.0 V) and includes an internal pull-down resistor to GND.
Dropout voltage is tightly specified: 350 mV (typ.) at 150 mA load for 1.8 V output, scaling with output voltage per published curves (e.g., 200 mV at 3.0 V). Output accuracy is maintained at ±1.0% for VOUT ≥ 1.8 V, with temperature coefficient of 75 ppm/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.0% (ensures stable core/logic rail for 1.8 V microcontrollers) |
| Max Output Current | 200 mA (supports moderate-power sensors or RF front-end biasing) |
| Quiescent Current | 2 μA max at IOUT = 0 mA (enables multi-year battery life in always-on IoT nodes) |
| Dropout Voltage | 350 mV typ. at 150 mA (allows operation down to VIN = 2.15 V for 1.8 V output) |
| Input Voltage Range | 1.5 V to 5.5 V (compatible with single-cell Li-ion, LiFePO₄, or 3.3 V system rails) |
| Package | SDFN4 (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg weight - enables <1 mm² board area) |
| Capacitor Support | 0.1 μF ceramic input/output (reduces BOM count and eliminates tantalum/aluminum electrolytics) |
Pinout & Package
TCR2LN18,LF uses the ultra-small SDFN4 surface-mount package (0.8 mm × 0.8 mm × 0.38 mm) with exposed thermal pad (center electrode recommended to be connected to GND for optimal thermal performance).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 1.5–5.5 V; requires 0.1 μF ceramic decoupling close to pin |
| VOUT | Regulated output | Delivers stable 1.8 V ±1.0%; connects to load and 0.1 μF ceramic capacitor |
| GND | Ground reference | Common return path; ties to PCB ground plane and center thermal pad |
| CONTROL | Enable/disable input | Active-high logic: ≥1.0 V enables regulator; ≤0.4 V disables with auto-discharge active |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2 μA max at zero load enables >10-year battery life in coin-cell-powered devices |
| Auto-discharge function | Internal discharge path activates when CONTROL = LOW, rapidly draining VOUT capacitance to prevent residual voltage hold-up |
| High accuracy output | ±1.0% tolerance at 1.8 V ensures reliable operation of precision analog or low-voltage logic without external trimming |
| Small-footprint SDFN4 package | 0.8 mm × 0.8 mm footprint with thermal pad allows placement in tight spaces while maintaining thermal reliability |
| Overcurrent protection | Current-limiting circuitry prevents damage during short-circuit or overload events without latch-up |
Applications
| Wearable Health Monitor | Bluetooth LE Sensor Node |
|---|---|
Use Scenario: Compact wrist-worn device measuring heart rate and SpO₂ using optical sensors and MCU. IC Role / Device Role / Timing Role: Primary 1.8 V power rail for MCU core, sensor interface, and ADC reference. Use Value: Ultra-low IB extends coin-cell battery life beyond 2 years; SDFN4 footprint enables integration beneath display module. | Use Scenario: Battery-powered environmental sensor transmitting temperature/humidity via BLE to smartphone. IC Role / Device Role / Timing Role: Regulates 1.8 V supply for BLE SoC and digital sensor ICs during active and sleep modes. Use Value: Auto-discharge ensures rapid VOUT collapse after shutdown, eliminating false wake-ups from residual charge on COUT. |
| Industrial IoT Edge Node | Portable Medical Diagnostic Tool |
Use Scenario: Rugged handheld device collecting vibration data from machinery using MEMS accelerometers. IC Role / Device Role / Timing Role: Supplies clean 1.8 V to low-noise amplifier and sigma-delta ADC. Use Value: ±1.0% output accuracy maintains ADC full-scale linearity; ceramic capacitor compatibility avoids ESR-related instability. | Use Scenario: Pocket-sized glucose meter requiring precise analog front-end and LCD driver. IC Role / Device Role / Timing Role: Powers 1.8 V analog signal chain and microcontroller peripherals. Use Value: 350 mV dropout enables operation from partially discharged alkaline cells (down to ~2.15 V), extending usable battery range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B182MR-G | Same 1.8 V output, 200 mA rating, but 1.0 μA quiescent current (lower than TCR2LN18,LF's 2 μA max); SOT-25 package (larger than SDFN4) | Larger footprint limits use in ultra-dense designs; lower IB benefits extreme low-power cases | Select when lowest possible IB outweighs board area constraints |
| Rohm BD33IC0WEFJ-ME2 | 1.8 V output, 300 mA rating, 25 μA quiescent current; HTSOP-J8 package (3.0 mm × 3.0 mm) | Higher IB and larger size suit less space-constrained industrial modules; higher current headroom | Select when >200 mA load margin or enhanced thermal dissipation is required |
Compared with XC6219B182MR-G and BD33IC0WEFJ-ME2, the TCR2LN18,LF uniquely balances ultra-small size (0.64 mm²), sub-2 μA quiescent current, and ±1.0% accuracy - making it optimal for miniaturized, long-life battery-powered systems where board area is at a premium.
Availability
TCR2LN18,LF is available at Aetrix Electronics and suitable for wearable health monitors, Bluetooth LE sensor nodes, industrial IoT edge nodes, and portable medical diagnostic tools requiring stable component supply and long-term manufacturability.
Supply support for TCR2LN18,LF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and analog ICs for industrial, automotive, and consumer applications.
The TCR2LN series targets ultra-low-power, space-constrained portable electronics - delivering high-accuracy, low-dropout regulation with minimal external components and industry-leading package miniaturization.
FAQ
What is the guaranteed output voltage accuracy of the TCR2LN18,LF over temperature?
The TCR2LN18,LF guarantees ±1.0% output voltage accuracy for VOUT ≥ 1.8 V across the full operating temperature range of −40°C to +85°C. This specification is confirmed in the Electrical Characteristics table (Page 4), where VOUT tolerance is explicitly stated as ±1.0% for 1.8 V output at Tj = −40 to 85°C, ensuring reliable performance in ambient-variable environments like wearable or outdoor IoT devices. The TCR2LN18,LF maintains this accuracy without external calibration.
Does the TCR2LN18,LF require external capacitors, and what values are validated?
Yes, the TCR2LN18,LF requires both input and output capacitors for stability, and Toshiba validates use of 0.1 μF ceramic capacitors for both CIN and COUT. This is explicitly stated in the Features section and confirmed in all Electrical Characteristics test conditions (e.g., "CIN = 0.1 μF, COUT = 0.1 μF"). The TCR2LN18,LF's internal compensation is designed for these values, eliminating need for larger or specialized capacitors - reducing BOM cost and board area. Using 0.1 μF ceramics is mandatory to achieve specified dropout, load regulation, and transient response.
How does the CONTROL pin function on the TCR2LN18,LF, and what are its logic thresholds?
The CONTROL pin on the TCR2LN18,LF is an active-high enable input with defined logic thresholds: VCT(OFF) ≤ 0.4 V (guaranteed disable) and VCT(ON) ≥ 1.0 V (guaranteed enable), per the Electrical Characteristics table (Page 4). When disabled, the TCR2LN18,LF engages auto-discharge to rapidly deplete VOUT capacitance. An internal pull-down resistor ensures safe default-OFF behavior if the pin is left floating. This interface simplifies direct connection to GPIOs of low-voltage MCUs without level-shifting.
What is the maximum dropout voltage of the TCR2LN18,LF at full rated load?
The maximum dropout voltage of the TCR2LN18,LF is 600 mV at IOUT = 150 mA and Tj = −40°C to +85°C, as specified in the Electrical Characteristics table (Page 4). At room temperature (Tj = 25°C), the typical dropout is 350 mV under the same conditions. This means the TCR2LN18,LF can maintain regulation with VIN as low as 2.4 V (1.8 V + 0.6 V) across its full temperature range - critical for operation from aging or low-voltage batteries. The TCR2LN18,LF's dropout scales predictably with output voltage per the published curve (Page 4).
Is the SDFN4 package of the TCR2LN18,LF lead-free and RoHS-compliant?
Yes, the TCR2LN18,LF in SDFN4 package is lead-free and RoHS-compliant. Toshiba confirms RoHS compliance for the TCR2LN series in its official documentation and product change notices. The ",LF" suffix in the part number explicitly denotes lead-free (Pb-free) construction per JEDEC standards. This ensures compatibility with modern reflow profiles and environmental regulations for commercial and medical electronics. The TCR2LN18,LF meets EU RoHS Directive requirements without exemptions.
TCR2LN18,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TCR2LN
- Package/Case:
- 4-XFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 150mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 2 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-SDFN (0.8x0.8)
TCR2LN18,LF FAQ
1.How can I place an order for TCR2LN18,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2LN18,LF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TCR2LN18,LF reliable?
The price and inventory of TCR2LN18,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2LN18,LF is usually 5 days.
3.What payment methods are accepted for TCR2LN18,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2LN18,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2LN18,LF?
TCR2LN18,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2LN18,LF order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TCR2LN18,LF?
For technical support, including TCR2LN18,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2LN18,LF requirements.
6.How does Aetrix verify that TCR2LN18,LF is sourced from the original manufacturer or authorized distributors?
All TCR2LN18,LF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TCR2LN18,LF meets industry standards.
7.What is the process for return or replacement of TCR2LN18,LF?
All TCR2LN18,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR2LN18,LF, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TCR2LN18,LF part is unused and in its original packaging.
Return procedure for TCR2LN18,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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