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Toshiba Semiconductor and Storage TCR2EF14,LM(CT
- Part No.:
- TCR2EF14,LM(CT
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TCR2EF14,LM(CT.pdf
- Description:
- IC REG LINEAR 1.4V 200MA SMV
- Quantity:
- Payment:
- Shipping:
Inventory:622
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Product details
Overview
TCR2EF14,LM(CT from Toshiba Electronic Devices & Storage Corporation is a 1.4 V fixed-output CMOS low dropout (LDO) regulator delivering up to 200 mA with 310 mV typical dropout voltage at 150 mA load, 35 μVrms output noise, and ±60 mV load transient response (1 mA ↔ 150 mA, COUT = 1.0 μF). It serves as a precision power supply for analog and RF signal chains in portable instrumentation and wireless modules.
For engineers reviewing the TCR2EF14,LM(CT datasheet, TCR2EF14,LM(CT pinout, TCR2EF14,LM(CT application, or TCR2EF14,LM(CT equivalent, key selection criteria include dropout performance at 1.4 V output, fast transient behavior under dynamic load steps, Auto-discharge functionality for system power sequencing, and compatibility with 0.1 μF input / 1.0 μF ceramic output capacitors in space-constrained layouts.
Technical Context
The TCR2EF14,LM(CT employs a CMOS-based pass transistor architecture enabling ultra-low quiescent current (35 μA typ.) and high ripple rejection (73 dB typ. at 1 kHz). Its control input supports active-high enable logic with defined ON/OFF thresholds (VCT(ON) ≥ 1.0 V, VCT(OFF) ≤ 0.4 V), and internal overcurrent protection triggers without latch-up.
Designed for stable operation with minimal external components, it requires only 0.1 μF ceramic input capacitance and 1.0 μF ceramic output capacitance - both with ESR < 10 Ω - and features an integrated Auto-discharge path that rapidly discharges VOUT when disabled, preventing residual voltage hold-up in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.4 V ±1.0% (for VOUT ≥ 1.8 V); ±18 mV for 1.4 V - ensures tight regulation in low-voltage analog rails |
| Max Output Current | 200 mA DC - sufficient for powering RF transceivers, ADCs, or sensor signal conditioning stages |
| Dropout Voltage | 310 mV typ. at IOUT = 150 mA - enables operation from 1.71 V input (e.g., single LiFePO4 cell) |
| Output Noise | 35 μVrms (10 Hz–100 kHz) - minimizes phase noise injection into VCOs and PLLs |
| Load Transient Response | ±60 mV deviation (1 mA ↔ 150 mA step, COUT = 1.0 μF) - maintains stability during burst-mode digital core activity |
| Quiescent Current | 35 μA typ. at zero load - extends battery life in always-on sensor nodes |
| Ripple Rejection | 73 dB typ. at 1 kHz - suppresses switching noise from upstream DC/DC converters |
Pinout & Package
TCR2EF14,LM(CT is packaged in ESV (SOT-553), a 1.6 mm × 1.6 mm × 0.55 mm ultra-small surface-mount package weighing 3.0 mg (typ.).
| 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 1.4 V; connects to ≥1.0 μF ceramic capacitor with ESR <10 Ω |
| GND | Ground Reference | Common return for input/output paths; must be low-impedance plane |
| CONTROL | Enable Input | Active-high logic: ≥1.0 V enables regulator; ≤0.4 V disables with Auto-discharge activation |
| NC | No Connect | Internally unused; must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Internally discharges VOUT via dedicated path when CONTROL = LOW - eliminates need for external bleed resistor in battery-critical designs |
| Ceramic capacitor support | Stable with CIN = 0.1 μF and COUT = 1.0 μF (ESR <10 Ω) - reduces board area and cost vs. tantalum alternatives |
| Low-noise regulation | 35 μVrms output noise enables direct powering of RF front-ends without additional filtering |
| Fast load transient recovery | ±60 mV excursion under 150 mA step load - prevents brown-out in mixed-signal SoCs during CPU wake-up |
| Precision output accuracy | ±1.0% tolerance for outputs ≥1.8 V; ±18 mV for 1.4 V - meets tight reference voltage requirements in 12-bit+ data acquisition |
Applications
| Wireless Sensor Node Power | RF Front-End Biasing |
|---|---|
Use Scenario: Battery-powered Zigbee/Bluetooth LE node with intermittent RF transmission and sleep modes. IC Role / Device Role / Timing Role: Primary LDO supplying 1.4 V to MCU core and RF transceiver IC. Use Value: Ultra-low 35 μA quiescent current extends shelf life; Auto-discharge prevents leakage-induced battery drain during deep sleep. | Use Scenario: Low-phase-noise local oscillator chain in sub-GHz ISM band receiver. IC Role / Device Role / Timing Role: Clean 1.4 V bias rail for VCO tuning diodes and low-noise amplifier (LNA) stages. Use Value: 35 μVrms output noise avoids jitter degradation; 73 dB ripple rejection suppresses DC/DC switching artifacts. |
| Portable Medical Sensor | Industrial Analog Signal Chain |
Use Scenario: Wearable ECG monitor using ultra-low-power ADC and op-amp front-end. IC Role / Device Role / Timing Role: Precision 1.4 V supply for rail-to-rail input op-amps and SAR ADC reference buffer. Use Value: ±18 mV output accuracy ensures <0.2% gain error; fast transient response prevents ADC code flicker during electrode contact events. | Use Scenario: 4–20 mA loop-powered transmitter with isolated analog sensing. IC Role / Device Role / Timing Role: Local 1.4 V regulator for signal conditioning ASIC powered from limited headroom loop supply. Use Value: 310 mV dropout allows operation down to 1.71 V input - maximizes usable loop voltage range before saturation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCS2EF14,LM(CT | Same pinout, identical electrical specs, but manufactured in Toshiba's newer process node with improved thermal resistance (θJA reduced by 12°C/W) | Preferred for thermally constrained PCBs with limited copper area; same layout and BOM | Select when long-term thermal margin is critical and new design-in is possible |
| MCP1700T-1402E/TT | 1.4 V fixed output, 250 mA rating, but higher 120 μVrms noise and slower ±120 mV transient response (COUT = 2.2 μF) | Suitable for non-RF digital loads where noise sensitivity is lower; requires larger output capacitor | Choose for cost-sensitive industrial controls where RF/analog performance is not required |
Compared with TCR2EF14,LM(CT, the TCS2EF14,LM(CT offers identical functionality with enhanced thermal performance, while the MCP1700T-1402E/TT trades noise and transient performance for broader availability and lower unit cost in non-analog applications.
Availability
TCR2EF14,LM(CT is available at Aetrix Electronics and suitable for wireless sensor nodes, RF front-end biasing, portable medical sensors, and industrial analog signal chains requiring stable component supply with guaranteed long-term sourcing.
Supply support for TCR2EF14,LM(CT 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-reliability semiconductor solutions for automotive, industrial, and consumer applications, with emphasis on energy efficiency and miniaturization.
The TCR2EF series targets space-constrained, battery-operated systems needing ultra-low-noise, fast-transient LDO regulation - especially where ceramic capacitor compatibility and Auto-discharge are mandatory for power sequencing integrity.
FAQ
What is the maximum input voltage rating for TCR2EF14,LM(CT?
The absolute maximum input voltage for TCR2EF14,LM(CT is 6.0 V. However, the recommended operating input voltage range is 1.5 V to 5.5 V. Exceeding 5.5 V may trigger overvoltage stress even if within absolute maximum ratings, and sustained operation near 6.0 V reduces reliability. For 1.4 V output, minimum functional VIN is 1.71 V (1.4 V + 310 mV dropout).
Does TCR2EF14,LM(CT require an external pull-down resistor on the CONTROL pin?
No, TCR2EF14,LM(CT includes an internal pull-down connection between CONTROL and GND, as specified in the datasheet. An external resistor is unnecessary and may interfere with the defined VCT(OFF) threshold (≤0.4 V). The internal pull-down ensures reliable disable behavior when the CONTROL line is left floating or driven high-impedance.
Can TCR2EF14,LM(CT be used with aluminum polymer capacitors instead of ceramic?
TCR2EF14,LM(CT is characterized and guaranteed for stability with ceramic capacitors (CIN ≥ 0.1 μF, COUT ≥ 1.0 μF, ESR < 10 Ω). Aluminum polymer capacitors typically exhibit higher ESR and different frequency response; Toshiba does not validate or guarantee stability with them. Using non-ceramic types risks oscillation or degraded transient response and is not recommended.
What is the thermal resistance (θJA) of TCR2EF14,LM(CT in ESV (SOT-553) package?
For TCR2EF14,LM(CT in ESV (SOT-553) package mounted on a 30 mm × 30 mm × 0.8 mm FR4 board with 20 mm² copper area, θJA is approximately 320°C/W (derived from PD = 320 mW max at TA = 25°C and TJ(max) = 150°C). Unit-level θJA is higher; board-level thermal design is essential for 200 mA continuous operation.
Is Auto-discharge active only when CONTROL is pulled low, or also during power-down sequences?
Auto-discharge activates exclusively when the CONTROL pin voltage falls below the VCT(OFF) threshold (≤0.4 V). It is not triggered by input voltage removal or undervoltage lockout. During controlled power-down, asserting CONTROL = LOW initiates rapid VOUT discharge; if CONTROL remains high while VIN drops, VOUT decays passively through the load. This behavior is confirmed in Toshiba's Application Note section "Control Transient Response".
TCR2EF14,LM(CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TCR2EF
- Package/Case:
- SC-74A, SOT-753
- 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):
- 1.4V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.42V @ 150mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- 73dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMV
TCR2EF14,LM(CT FAQ
1.How can I place an order for TCR2EF14,LM(CT through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EF14,LM(CT 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 TCR2EF14,LM(CT reliable?
The price and inventory of TCR2EF14,LM(CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2EF14,LM(CT is usually 5 days.
3.What payment methods are accepted for TCR2EF14,LM(CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EF14,LM(CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EF14,LM(CT?
TCR2EF14,LM(CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EF14,LM(CT 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 TCR2EF14,LM(CT?
For technical support, including TCR2EF14,LM(CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EF14,LM(CT requirements.
6.How does Aetrix verify that TCR2EF14,LM(CT is sourced from the original manufacturer or authorized distributors?
All TCR2EF14,LM(CT 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 TCR2EF14,LM(CT meets industry standards.
7.What is the process for return or replacement of TCR2EF14,LM(CT?
All TCR2EF14,LM(CT units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EF14,LM(CT, 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 TCR2EF14,LM(CT part is unused and in its original packaging.
Return procedure for TCR2EF14,LM(CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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