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Toshiba Semiconductor and Storage TCR2LN25,LF
- Part No.:
- TCR2LN25,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TCR2LN25,LF.pdf
- Description:
- IC REG LINEAR 2.5V 200MA 4SDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,678
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Product details
Overview
TCR2LN25,LF from Toshiba Electronic Devices & Storage Corporation is a 2.5 V fixed-output CMOS low dropout (LDO) voltage regulator with ultra-low quiescent current (2 μA max), 200 mA output capability, and 250 mV typical dropout voltage at 150 mA load. It features on/off control input, auto-discharge function, overcurrent protection, and operates across −40 °C to +85 °C for portable power management in space-constrained applications.
For engineers reviewing the TCR2LN25,LF datasheet, TCR2LN25,LF pinout, TCR2LN25,LF application, or TCR2LN25,LF equivalent, this device is selected for battery-powered systems requiring high efficiency, minimal board area, stable low-voltage rail generation, and fast enable/disable response with ceramic capacitor compatibility (0.1 μF input/output).
Technical Context
The TCR2LN25,LF implements a CMOS-based LDO architecture with internal P-channel MOSFET pass element, enabling low dropout and ultra-low IB. Its CONTROL pin accepts TTL-compatible logic (ON threshold ≥1.0 V, OFF threshold ≤0.4 V) and integrates a pull-down resistor to GND for default-off safety.
It delivers ±1.0 % output accuracy for VOUT ≥1.8 V (including 2.5 V), supports 0.1 μF ceramic capacitors on both input and output, and includes thermal foldback and current-limiting circuitry to protect against short-circuit conditions without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±1.0 % (ensures stable core/logic rail for 2.5 V microcontrollers and sensors) |
| Max Output Current | 200 mA (supports moderate-power peripherals like BLE radios or display drivers) |
| Quiescent Current | 2 μA max at zero load (enables multi-year battery life in always-on IoT endpoints) |
| Dropout Voltage | 250 mV typ. at 150 mA (allows operation down to VIN = 2.75 V while maintaining regulation) |
| Input Voltage Range | 1.5 V to 5.5 V (compatible with single-cell Li-ion, Li-po, or 3.3 V system rails) |
| Package | SDFN4 (0.8 mm × 0.8 mm × 0.38 mm, 4-pin, 0.6 mg weight - enables <1 mm² footprint) |
| Auto-Discharge | Integrated discharge path (RSD = 20 Ω typ.) clears output when disabled - prevents residual voltage hold-up |
Pinout & Package
TCR2LN25,LF is housed in the ultra-compact SDFN4 package (0.8 mm × 0.8 mm × 0.38 mm), with exposed center pad recommended for GND connection to enhance thermal performance and EMI suppression.
| 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 |
| CONTROL | Enable/Disable Input | TTL-compatible; ≥1.0 V = ON, ≤0.4 V = OFF; internal pull-down ensures safe default-off state |
| GND | Ground Reference | Common return for input, output, and control; center pad must be connected to GND plane |
| VOUT | Regulated Output | Delivers stable 2.5 V ±1.0 %; 0.1 μF ceramic capacitor required for stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2 μA max at IOUT = 0 mA - extends battery runtime in sleep-mode sensor nodes |
| Ceramic capacitor support | Stable with 0.1 μF CIN/COUT - eliminates tantalum/Al-elec, reduces BOM cost and footprint |
| Auto-discharge function | RSD = 20 Ω typ. - rapidly discharges VOUT after shutdown, preventing unintended wake-up |
| Overcurrent protection | Current-limit foldback - protects IC and source during output short without latch-up |
| High accuracy output | ±1.0 % tolerance at 2.5 V - eliminates need for external trimming in precision analog/sensor rails |
Applications
| Wearable Health Monitor | Bluetooth Low Energy Module |
|---|---|
|
Use Scenario: Continuous ECG/PPG sensing powered by coin cell or small Li-po battery. IC Role / Device Role / Timing Role: Primary 2.5 V supply for analog front-end and MCU core, enabled only during active measurement cycles. Use Value: 2 μA quiescent current preserves battery life over months; auto-discharge prevents leakage into sensor bias networks during sleep. |
Use Scenario: Compact BLE beacon or peripheral with intermittent radio transmission. IC Role / Device Role / Timing Role: Regulated 2.5 V rail for RF transceiver and flash memory, controlled via host GPIO. Use Value: 250 mV dropout allows operation down to 2.75 V VIN - maximizes usable battery voltage range before shutdown. |
| Industrial Sensor Node | Smart Home Motion Detector |
|
Use Scenario: Battery-operated temperature/humidity node deployed in remote locations. IC Role / Device Role / Timing Role: Stable 2.5 V reference and supply for ADC, digital sensor interface, and low-power MCU. Use Value: ±1.0 % output accuracy ensures consistent ADC reference, eliminating calibration drift across temperature. |
Use Scenario: PIR-based occupancy detector with motion-triggered LED indicator and wireless reporting. IC Role / Device Role / Timing Role: Always-on 2.5 V rail for PIR signal conditioning and wake-up logic, with fast CONTROL response. Use Value: Sub-100 μs enable/disable transient response ensures immediate power gating - no delay in motion detection latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2112K-2.5TRG1 | 200 mA, 2.5 V, 600 mV max dropout, 65 μA quiescent current, SOT-23-5 package | Larger footprint (2.9 mm × 1.6 mm), higher IB limits battery life in ultra-low-power use | Choose if PCB layout already accommodates SOT-23 and dropout margin >600 mV is acceptable |
| MCP1700T-2502E/TT | 250 mA, 2.5 V, 178 mV typical dropout at 250 mA, 1.6 μA quiescent current, SOT-23-3 package | No CONTROL pin or auto-discharge - requires external enable switch and discharge FET | Choose when lowest possible IB is critical and system-level control/discharge can be implemented externally |
Compared with AP2112K-2.5TRG1 and MCP1700T-2502E/TT, the TCR2LN25,LF uniquely combines ultra-small SDFN4 footprint, integrated CONTROL logic with pull-down, and auto-discharge - making it optimal for miniaturized, self-contained battery systems where board area and autonomous shutdown behavior are design constraints.
Availability
TCR2LN25,LF is available at Aetrix Electronics and suitable for wearable electronics, BLE modules, industrial sensor nodes, and smart home motion detectors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TCR2LN25,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 high-efficiency, miniaturized semiconductor solutions for consumer, industrial, and automotive markets, with emphasis on power management and analog integration.
The TCR2LN series was developed specifically for ultra-low-power, space-constrained portable electronics - delivering regulated voltage with minimal quiescent draw and smallest possible footprint using advanced CMOS LDO architecture.
FAQ
What is the maximum input voltage rating for TCR2LN25,LF?
The TCR2LN25,LF has an absolute maximum input voltage (VIN) of 6.0 V. However, its recommended operating input voltage range is 1.5 V to 5.5 V per electrical characteristics testing conditions. Exceeding 5.5 V may compromise long-term reliability or trigger overvoltage stress not covered by standard qualification tests. Always maintain VIN within 1.5–5.5 V for guaranteed performance and lifetime compliance in designs using TCR2LN25,LF.
Does TCR2LN25,LF require external components for stability?
Yes, the TCR2LN25,LF requires 0.1 μF ceramic capacitors on both VIN and VOUT pins for stable operation - no additional ESR or bias components are needed. Toshiba specifies these values explicitly and confirms stability across temperature and load with X5R/X7R dielectrics. The absence of external compensation networks simplifies layout and reduces BOM count, making TCR2LN25,LF ideal for compact, cost-sensitive applications.
How does the CONTROL pin function on TCR2LN25,LF?
The CONTROL pin on TCR2LN25,LF is a logic-level enable input: applying ≥1.0 V turns the regulator ON, while ≤0.4 V disables it. An internal pull-down resistor connects CONTROL to GND, ensuring default-OFF behavior at power-up or floating states. This eliminates the need for external pull-down resistors and guarantees safe startup sequencing - a key reliability feature for battery-powered TCR2LN25,LF deployments.
What is the thermal performance of TCR2LN25,LF in the SDFN4 package?
The TCR2LN25,LF in SDFN4 package has a rated power dissipation of 300 mW under specified FR4 board conditions (40 mm × 40 mm, 50 % copper coverage). Its thermal resistance θJA is approximately 417 °C/W, meaning a 100 mW load raises junction temperature ~42 °C above ambient. For continuous 200 mA operation at 2.5 V output, ensure adequate PCB copper pour under the exposed center pad and limit ambient temperature to ≤65 °C to maintain Tj < 125 °C in TCR2LN25,LF designs.
Is TCR2LN25,LF compatible with lead-free reflow soldering processes?
Yes, TCR2LN25,LF is qualified for lead-free reflow soldering per JEDEC J-STD-020, supporting peak temperatures up to 260 °C. The SDFN4 package uses matte tin plating and meets RoHS Directive 2011/65/EU requirements. Toshiba specifies MSL level 1 (unlimited floor life at ≤30 °C/85 % RH), so no baking is required prior to assembly - simplifying manufacturing flow for TCR2LN25,LF integration.
TCR2LN25,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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.36V @ 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)
TCR2LN25,LF FAQ
1.How can I place an order for TCR2LN25,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2LN25,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 TCR2LN25,LF reliable?
The price and inventory of TCR2LN25,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2LN25,LF is usually 5 days.
3.What payment methods are accepted for TCR2LN25,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2LN25,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2LN25,LF?
TCR2LN25,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2LN25,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 TCR2LN25,LF?
For technical support, including TCR2LN25,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2LN25,LF requirements.
6.How does Aetrix verify that TCR2LN25,LF is sourced from the original manufacturer or authorized distributors?
All TCR2LN25,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 TCR2LN25,LF meets industry standards.
7.What is the process for return or replacement of TCR2LN25,LF?
All TCR2LN25,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR2LN25,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 TCR2LN25,LF part is unused and in its original packaging.
Return procedure for TCR2LN25,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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