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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Toshiba Semiconductor and Storage TCR2LN08,LF(SE

Name: TCR2LN08,LF(SE
Brand: Toshiba Semiconductor and Storage
SKU: TCR2LN08,LF(SE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TCR2LN08,LF(SE

Manufacturer:: Toshiba Semiconductor and Storage

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 4-XFDFN Exposed Pad

Datasheet:: TCR2LN08,LF(SE.pdf

Description:: LDO REG VOUT=0.8V I=200MA

Quantity:: RFQ Add To RFQ list

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Inventory:10,000

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Product details

Overview

TCR2LN08,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a CMOS low-dropout linear regulator delivering fixed 0.8 V output at up to 200 mA, featuring ultra-low 2 μA (max) quiescent current, 1000 mV typical dropout at 150 mA, and ±18 mV output voltage accuracy. It integrates on/off control, auto-discharge, and overcurrent protection in the SDFN4 package (0.8 mm × 0.8 mm × 0.38 mm), designed for space-constrained portable power rails such as cellular phone baseband ICs.

For engineers reviewing the TCR2LN08,LF(SE) datasheet, TCR2LN08,LF(SE) pinout, TCR2LN08,LF(SE) application, or TCR2LN08,LF(SE) equivalent, key selection criteria include its 0.8 V fixed output, sub-2 μA standby current, compatibility with 0.1 μF ceramic input/output capacitors, and thermal performance under 85°C ambient operation in high-density PCB layouts.

Technical Context

The TCR2LN08,LF(SE) employs a CMOS pass transistor architecture enabling ultra-low quiescent current while maintaining stable regulation across −40°C to +85°C. Its control input supports active-high enable logic with 1.0–5.5 V ON threshold and 0–0.4 V OFF threshold, and internal pull-down ensures defined state when unconnected.

Dropout voltage scales with output voltage: at 0.8 V output, it reaches 1000 mV (typ.) at 150 mA load, reflecting optimized biasing for ultra-low-V_OUT operation. Auto-discharge functionality uses an internal 20 Ω switch between V_OUT and GND during shutdown, ensuring rapid output discharge without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 0.8 V ±18 mV - enables direct powering of low-voltage core logic (e.g., ARM Cortex-M0+ I/O domains)
Max Output Current	200 mA - sufficient for RF transceivers, sensor hubs, or MCU peripherals without thermal derating on standard FR4
Quiescent Current	1.0–2.0 μA (max at T_j = −40 to 85°C) - extends battery life in always-on wearable sensors
Dropout Voltage	1000 mV (typ.) at I_OUT = 150 mA - allows operation from 1.8 V input while regulating 0.8 V output
Input Voltage Range	1.5–5.5 V - compatible with single-cell Li-ion (3.0–4.2 V), LiFePO₄ (2.5–3.65 V), or dual-AA (2.4–3.2 V) sources
Package	SDFN4 (0.8 mm × 0.8 mm × 0.38 mm) - enables placement beneath BGA packages or in <1.0 mm² board area
Capacitor Support	0.1 μF ceramic C_IN/C_OUT - eliminates need for bulk electrolytics, reducing height and cost in slim devices

Pinout & Package

SDFN4 package: 4-pin ultra-small plastic mold (0.8 mm × 0.8 mm × 0.38 mm), bottom-exposed thermal pad (to be connected to GND or left open per design).

Pin/Terminal	Circuit Role	Design Meaning
VIN	Input power supply	Accepts 1.5–5.5 V; requires local 0.1 μF ceramic decoupling within 2 mm
CONTROL	Enable/disable control input	Active-high logic: ≥1.0 V enables regulator; ≤0.4 V disables with auto-discharge activation
GND	Ground reference	Common return for VIN, VOUT, CONTROL; thermal pad must connect to GND plane for 300 mW dissipation
VOUT	Regulated output	Delivers stable 0.8 V ±18 mV; 0.1 μF ceramic capacitor required within 1 mm for stability

Key Features

Feature	Design Value
Ultra-low quiescent current	2 μA max at zero load - reduces no-load battery drain to <1 μA/hour in coin-cell-powered IoT nodes
Auto-discharge function	20 Ω internal discharge path - clears VOUT to GND in <1 ms after disable, preventing back-powering of upstream circuits
Overcurrent protection	Current-limiting foldback - sustains 200 mA output while limiting peak current to prevent thermal runaway during short-circuit
High accuracy at low V_OUT	±18 mV (0.8 V output) - ensures reliable operation of sub-1.0 V digital cores without margin overhead
Small-footprint ceramic support	Stable with 0.1 μF C_IN/C_OUT - eliminates ESR sensitivity issues common in larger LDOs, simplifying layout

Applications

Wearable Health Sensors	Bluetooth LE Microcontroller Power
Use Scenario: Continuous ECG/PPG monitoring in wrist-worn devices powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Primary 0.8 V supply for ultra-low-power MCU sleep mode and analog front-end biasing. Use Value: 2 μA quiescent current extends battery life beyond 12 months; SDFN4 footprint fits under optical sensor array.	Use Scenario: Powering Nordic nRF52833 SoC's digital core in compact BLE beacons. IC Role / Device Role / Timing Role: Fixed 0.8 V LDO for CPU domain, enabled only during active radio transmission bursts. Use Value: Auto-discharge prevents leakage into SoC retention rail; 1000 mV dropout allows use of 1.8 V buck converter intermediate rail.
Smart Card Controllers	Low-Voltage FPGA Configuration
Use Scenario: ISO 7816-compliant secure element powering in contactless payment cards. IC Role / Device Role / Timing Role: Regulated 0.8 V supply for cryptographic accelerator and flash memory interface. Use Value: ±18 mV accuracy ensures reliable 0.8 V I/O signaling across temperature; 0.1 μF capacitors meet card thickness constraints.	Use Scenario: Configuring Lattice iCE40UP FPGA core voltage in space-limited edge AI modules. IC Role / Device Role / Timing Role: Dedicated 0.8 V rail for FPGA fabric, sequenced via CONTROL pin during boot. Use Value: Fast enable/disable (<100 μs response) synchronizes with FPGA configuration clock; SDFN4 enables placement adjacent to BGA pads.

Wearable Health Sensors

Bluetooth LE Microcontroller Power

Use Scenario: Continuous ECG/PPG monitoring in wrist-worn devices powered by CR2032 coin cell.

IC Role / Device Role / Timing Role: Primary 0.8 V supply for ultra-low-power MCU sleep mode and analog front-end biasing.

Use Value: 2 μA quiescent current extends battery life beyond 12 months; SDFN4 footprint fits under optical sensor array.

Use Scenario: Powering Nordic nRF52833 SoC's digital core in compact BLE beacons.

IC Role / Device Role / Timing Role: Fixed 0.8 V LDO for CPU domain, enabled only during active radio transmission bursts.

Use Value: Auto-discharge prevents leakage into SoC retention rail; 1000 mV dropout allows use of 1.8 V buck converter intermediate rail.

Smart Card Controllers

Low-Voltage FPGA Configuration

Use Scenario: ISO 7816-compliant secure element powering in contactless payment cards.

IC Role / Device Role / Timing Role: Regulated 0.8 V supply for cryptographic accelerator and flash memory interface.

Use Value: ±18 mV accuracy ensures reliable 0.8 V I/O signaling across temperature; 0.1 μF capacitors meet card thickness constraints.

Use Scenario: Configuring Lattice iCE40UP FPGA core voltage in space-limited edge AI modules.

IC Role / Device Role / Timing Role: Dedicated 0.8 V rail for FPGA fabric, sequenced via CONTROL pin during boot.

Use Value: Fast enable/disable (<100 μs response) synchronizes with FPGA configuration clock; SDFN4 enables placement adjacent to BGA pads.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-quiescent-current LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
R1190J081B-TR-FE	0.8 V output, 300 mA rating, 250 nA quiescent current, SOT-23-5 package (2.9 mm × 2.8 mm)	Larger footprint; higher current capability but no auto-discharge	Choose for higher load headroom where board area permits and auto-discharge is not required.
MCP1703T-0802E/MB	0.8 V output, 250 mA rating, 4 μA quiescent current, SOT-23-5 package	No auto-discharge; ±2% accuracy (worse than TCR2LN08's ±18 mV at 0.8 V)	Choose for cost-sensitive designs where 4 μA quiescent current is acceptable and discharge control is handled externally.

Compared with R1190J081B-TR-FE and MCP1703T-0802E/MB, the TCR2LN08,LF(SE) uniquely combines 0.8 V output, sub-2 μA quiescent current, integrated auto-discharge, and 0.8 mm² footprint-making it optimal for miniaturized, battery-critical systems where every nanoamp and square micron matters.

Availability

TCR2LN08,LF(SE) is available at Aetrix Electronics and suitable for wearable health sensors, Bluetooth LE microcontroller power, smart card controllers, and low-voltage FPGA configuration requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for TCR2LN08,LF(SE) 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 over 50 years of analog IC expertise.

The TCR2LN series targets ultra-compact, battery-powered applications demanding minimal quiescent current and minimal board area-specifically engineered for next-generation wearables, IoT edge nodes, and portable medical devices.

FAQ

What is the guaranteed output voltage tolerance for TCR2LN08,LF(SE) at 0.8 V?

The TCR2LN08,LF(SE) guarantees output voltage accuracy of ±18 mV (±2.25%) at 0.8 V output across operating conditions, as specified in the Electrical Characteristics table for V_OUT < 1.8 V. This tolerance holds at I_OUT = 50 mA and T_j = 25°C, with tighter control than general-purpose LDOs targeting higher voltages.

Does TCR2LN08,LF(SE) require external components for stability?

No, the TCR2LN08,LF(SE) is internally compensated and stable with only 0.1 μF ceramic capacitors on both input and output pins. Toshiba explicitly validates this configuration in the Application Note, eliminating the need for ESR-tuned tantalum or aluminum electrolytic capacitors typically required by older LDO architectures.

How does the auto-discharge function operate in TCR2LN08,LF(SE)?

When the CONTROL pin is driven low (≤0.4 V), the TCR2LN08,LF(SE) activates an internal 20 Ω discharge switch between VOUT and GND. This rapidly discharges the output capacitor-typically clearing 0.8 V to <0.1 V within 1 ms-preventing back-powering of upstream circuitry and ensuring clean power sequencing in multi-rail systems.

What is the maximum allowable power dissipation for TCR2LN08,LF(SE) on a standard PCB?

The TCR2LN08,LF(SE) has a maximum power dissipation rating of 300 mW when mounted on a 40 mm × 40 mm FR4 board with 50% copper coverage on both sides. At 200 mA load and 1.0 V dropout (VIN = 1.8 V), power dissipation is 200 mW-within safe limits without heatsinking, provided ambient temperature remains ≤85°C.

Can TCR2LN08,LF(SE) be used with input voltages below 1.5 V?

No, the absolute maximum ratings specify a minimum input voltage of 1.5 V for reliable operation. Attempting to operate below this threshold may cause regulation failure or undefined behavior, as the internal CMOS pass device requires sufficient gate drive margin to maintain control loop stability and dropout performance.

TCR2LN08,LF(SE Specifications

Product attributes: Attribute value

Manufacturer:: Toshiba Semiconductor and Storage

Series:: TCR2LN

Package/Case:: 4-XFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 5.5V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 1.56V @ 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)

TCR2LN08,LF(SE FAQ

1.How can I place an order for TCR2LN08,LF(SE through Aetrix?

Please submit a Request for Quotation (RFQ) for TCR2LN08,LF(SE 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 TCR2LN08,LF(SE reliable?

The price and inventory of TCR2LN08,LF(SE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2LN08,LF(SE is usually 5 days.

3.What payment methods are accepted for TCR2LN08,LF(SE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2LN08,LF(SE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TCR2LN08,LF(SE?

TCR2LN08,LF(SE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TCR2LN08,LF(SE 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 TCR2LN08,LF(SE?

For technical support, including TCR2LN08,LF(SE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2LN08,LF(SE requirements.

6.How does Aetrix verify that TCR2LN08,LF(SE is sourced from the original manufacturer or authorized distributors?

All TCR2LN08,LF(SE 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 TCR2LN08,LF(SE meets industry standards.

7.What is the process for return or replacement of TCR2LN08,LF(SE?

All TCR2LN08,LF(SE units undergo pre-shipment inspection (PSI). If there is an issue with TCR2LN08,LF(SE, 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 TCR2LN08,LF(SE part is unused and in its original packaging.

Return procedure for TCR2LN08,LF(SE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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