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Toshiba Semiconductor and Storage TCR2EF31,LM
- Part No.:
- TCR2EF31,LM
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TCR2EF31,LM.pdf
- Description:
- IC REG LINEAR 3.1V 200MA SMV
- Quantity:
- Payment:
- Shipping:
Inventory:3,203
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Product details
Overview
TCR2EF31,LM from Toshiba Electronic Devices & Storage Corporation is a 3.1 V fixed-output CMOS low dropout (LDO) regulator delivering up to 200 mA with 150 mV typical dropout at 150 mA load, 35 μVrms output noise, and ±60 mV load transient response (1 mA ↔ 150 mA, COUT = 1.0 μF). It integrates on/off control, overcurrent protection, and auto-discharge for analog/RF power rails in portable instrumentation and sensor nodes.
For engineers reviewing the TCR2EF31,LM datasheet, TCR2EF31,LM pinout, TCR2EF31,LM application, or TCR2EF31,LM equivalent, key selection criteria include its 3.1 V output accuracy (±1.0 %), ultra-low quiescent current (35 μA typ.), 73 dB ripple rejection at 1 kHz, SOT-553 (ESV) package footprint, and compatibility with ceramic input/output capacitors (CIN ≥ 0.1 μF, COUT ≥ 1.0 μF).
Technical Context
The TCR2EF31,LM employs a CMOS pass transistor architecture enabling low dropout voltage and minimal quiescent current. Its internal control loop delivers fast load transient response without requiring external compensation, supported by stable operation with 1.0 μF ceramic output capacitance.
It features an active-low CONTROL pin with defined ON/OFF thresholds (VCT(ON) ≥ 1.0 V, VCT(OFF) ≤ 0.4 V), integrated overcurrent protection that limits output current during fault conditions, and auto-discharge functionality activated when CONTROL is pulled low to rapidly discharge the output capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.1 V ±1.0 % (for VOUT ≥ 1.8 V), enabling precise biasing of RF amplifiers and ADC references. |
| Max Output Current | 200 mA DC, sufficient to power multiple low-power analog ICs or microcontroller peripherals from a single rail. |
| Dropout Voltage | 150 mV (typ.) at IOUT = 150 mA, allowing operation from 3.25 V input while maintaining regulation - critical for battery-powered systems. |
| Output Noise | 35 μVrms (10 Hz–100 kHz), minimizing phase noise in local oscillator supplies and signal-chain front-ends. |
| Ripple Rejection | 73 dB (typ.) at 1 kHz, effectively suppressing switching noise from upstream DC/DC converters. |
| Quiescent Current | 35 μA (typ.) at zero load, extending battery life in always-on sensor or IoT edge devices. |
| Operating Temp | −40°C to +85°C, supporting industrial and automotive under-hood ambient conditions. |
Pinout & Package
TCR2EF31,LM is packaged in the ESV (SOT-553) surface-mount package: 1.6 mm × 1.6 mm × 0.55 mm, 5-pin, moisture-sensitive level 1, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 1.5–5.5 V input; requires ≥0.1 μF ceramic decoupling close to pin for stability. |
| VOUT | Regulated output | Delivers stable 3.1 V; must be bypassed with ≥1.0 μF ceramic capacitor directly at pin for transient response. |
| GND | Power ground reference | Low-impedance return path; connect to solid ground plane to minimize noise coupling and thermal resistance. |
| CONTROL | Enable/disable logic input | Active-high: ≥1.0 V enables regulation; ≤0.4 V disables output and activates auto-discharge. |
| NC | No-connect terminal | Internally unconnected; must remain floating or grounded per layout best practices - no external connection required. |
Key Features
| Feature | Design Value |
|---|---|
| Fast load transient response | ±60 mV output deviation during 1 mA ↔ 150 mA step load, preserving signal integrity in dynamic analog circuits. |
| Auto-discharge function | Actively discharges VOUT when CONTROL is low, preventing unintended wake-up or latch-up in power-gated subsystems. |
| Ceramic capacitor compatibility | Stable with CIN = 0.1 μF and COUT = 1.0 μF ceramic types, eliminating need for larger, less reliable tantalum or electrolytic caps. |
| Precision output accuracy | ±1.0 % tolerance over temperature and line/load, reducing need for post-regulation trimming in precision data acquisition paths. |
| High ripple rejection | 73 dB at 1 kHz enables clean LDO output even when fed from noisy switcher outputs - simplifies multi-rail power architecture. |
Applications
| Portable RF Transceivers | Industrial Sensor Signal Chains |
|---|---|
|
Use Scenario: Powering VCOs, LNAs, and mixer bias rails in sub-GHz ISM-band transceivers operating from single-cell Li-ion or coin-cell sources. IC Role / Device Role / Timing Role: Primary low-noise, low-dropout voltage source ensuring stable RF performance across battery discharge profile. Use Value: 35 μVrms noise and 150 mV dropout preserve phase noise floor and enable >10-hour runtime from 3.6 V nominal input. |
Use Scenario: Supplying precision op-amps, 16-bit SAR ADCs, and bridge-sensor interfaces in factory-floor condition monitoring nodes. IC Role / Device Role / Timing Role: Clean, accurate 3.1 V reference rail decoupled from noisy digital domains and switching supplies. Use Value: ±1.0 % accuracy and 73 dB ripple rejection eliminate gain drift and reduce calibration frequency in metrology-grade designs. |
| Wearable Health Monitors | Automotive Cabin Sensors |
|
Use Scenario: Regulating power for optical heart-rate sensors (PPG), accelerometers, and BLE SoCs in compact, battery-constrained wearables. IC Role / Device Role / Timing Role: Ultra-low-IQ (35 μA) LDO with controlled enable sequencing for system-level power management. Use Value: Auto-discharge ensures rapid shutdown and prevents leakage-induced battery drain during sleep modes. |
Use Scenario: Providing stable 3.1 V supply to MEMS microphones, humidity sensors, and LIN transceiver bias in automotive cabin modules. IC Role / Device Role / Timing Role: AEC-Q200–capable LDO meeting extended temperature (−40°C to +85°C) and transient immunity requirements. Use Value: Robust overcurrent protection and 200 mA drive capability support hot-plug and ESD event recovery without latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCS2EF31,LM | Same 3.1 V output, identical ESV package, but rated for −40°C to +105°C junction temperature and higher PSRR (75 dB @ 1 kHz). | Suitable for under-hood automotive modules requiring extended temperature range and tighter noise suppression. | Select TCS2EF31,LM only if operating ambient exceeds +85°C or PSRR >73 dB is mandatory; otherwise TCR2EF31,LM offers cost and footprint parity. |
| MCP1703T-3102E/MB | 3.1 V output, SOT-23-5 package (larger than ESV), 250 mV dropout at 250 mA, 65 μVrms noise, no auto-discharge. | Better thermal dissipation for higher continuous loads, but lacks fast transient response and active discharge for low-power sleep states. | Choose MCP1703T-3102E/MB when board space allows SOT-23-5 and auto-discharge is not required; avoid where <60 mV load step deviation is critical. |
Compared with TCR2EF31,LM, TCS2EF31,LM extends temperature capability and PSRR margin at minor cost premium, while MCP1703T-3102E/MB trades transient performance and auto-discharge for higher current headroom and broader vendor availability - making TCR2EF31,LM optimal for space-constrained, low-noise, low-IQ portable systems.
Availability
TCR2EF31,LM is available at Aetrix Electronics and suitable for portable RF transceivers, industrial sensor signal chains, and wearable health monitors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TCR2EF31,LM 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 high-efficiency, high-reliability semiconductor solutions for power management, motor control, and analog signal conditioning.
The TCR2EF series targets ultra-low-noise, low-quiescent-current LDO applications in battery-powered and RF-sensitive systems, emphasizing fast transient response and ceramic capacitor compatibility.
FAQ
What is the maximum input voltage rating for TCR2EF31,LM?
The absolute maximum input voltage for TCR2EF31,LM 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 or degrade long-term reliability, even if within absolute maximum ratings. Always maintain VIN ≤ VOUT + 1.0 V for optimal dropout and thermal performance in the TCR2EF31,LM.
Does TCR2EF31,LM require an external pull-down resistor on the CONTROL pin?
No, TCR2EF31,LM includes an internal pull-down between CONTROL and GND, as specified in the datasheet. An external resistor is unnecessary unless specific timing or noise immunity requirements dictate stronger drive strength. The internal pull-down ensures predictable OFF-state behavior when CONTROL is left floating, supporting robust power sequencing in the TCR2EF31,LM.
Can TCR2EF31,LM operate with a 0.47 μF output capacitor?
No - TCR2EF31,LM requires a minimum output capacitance of 1.0 μF (ceramic) for guaranteed stability and specified load transient response (±60 mV). Using 0.47 μF risks oscillation, excessive overshoot, or failure to meet transient specs. The TCR2EF31,LM datasheet explicitly specifies COUT ≥ 1.0 μF; lower values invalidate the published performance metrics.
What is the dropout voltage of TCR2EF31,LM at 200 mA load?
The dropout voltage of TCR2EF31,LM is not characterized at 200 mA - the datasheet specifies VDO = 150 mV (typ.) at 150 mA. At 200 mA, the device remains functional but operates near its absolute maximum output current limit (200 mA DC), where dropout increases and thermal derating applies. For reliable 200 mA operation, ensure adequate PCB copper area and ambient temperature ≤ 60°C in the TCR2EF31,LM design.
Is TCR2EF31,LM pin-compatible with other TCR2EF series variants?
Yes - all TCR2EF series devices in the ESV (SOT-553) package, including TCR2EF31,LM, share identical pinout, footprint, and thermal characteristics. Swapping variants (e.g., TCR2EF30,LM or TCR2EF33,LM) requires only firmware or schematic updates for output voltage change; no PCB revision is needed. This interchangeability is confirmed across Toshiba's official package drawings and pin assignment tables for the TCR2EF31,LM and related parts.
TCR2EF31,LM 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):
- 3.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 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
TCR2EF31,LM FAQ
1.How can I place an order for TCR2EF31,LM through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EF31,LM 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 TCR2EF31,LM reliable?
The price and inventory of TCR2EF31,LM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2EF31,LM is usually 5 days.
3.What payment methods are accepted for TCR2EF31,LM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EF31,LM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EF31,LM?
TCR2EF31,LM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EF31,LM 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 TCR2EF31,LM?
For technical support, including TCR2EF31,LM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EF31,LM requirements.
6.How does Aetrix verify that TCR2EF31,LM is sourced from the original manufacturer or authorized distributors?
All TCR2EF31,LM 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 TCR2EF31,LM meets industry standards.
7.What is the process for return or replacement of TCR2EF31,LM?
All TCR2EF31,LM units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EF31,LM, 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 TCR2EF31,LM part is unused and in its original packaging.
Return procedure for TCR2EF31,LM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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