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Toshiba Semiconductor and Storage TCR2EE45,LM
- Part No.:
- TCR2EE45,LM
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- SOT-553
- Datasheet:
-
TCR2EE45,LM.pdf
- Description:
- IC REG LINEAR 4.5V 200MA ESV
- Quantity:
- Payment:
- Shipping:
Inventory:4,354
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Product details
Overview
TCR2EE45,LM from Toshiba Electronic Devices & Storage Corporation is a 4.5 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 serves as a precision power supply for analog/RF signal chains in portable instrumentation and wireless sensor nodes.
For engineers reviewing the TCR2EE45,LM datasheet, TCR2EE45,LM pinout, TCR2EE45,LM application, or TCR2EE45,LM equivalent, this page delivers verified electrical specs, package mapping to ESV (SOT-553), on/off control behavior, auto-discharge functionality, and real-world design implications for noise-sensitive LDO selection.
Technical Context
The TCR2EE45,LM employs a CMOS pass transistor architecture enabling ultra-low quiescent current (35 μA typ.) and high ripple rejection (73 dB typ. at 1 kHz). Its internal voltage reference and error amplifier deliver ±1.0% output accuracy for VOUT ≥ 1.8 V and support stable regulation with ceramic capacitors (CIN ≥ 0.1 μF, COUT ≥ 1.0 μF).
Control logic accepts 0–0.4 V for OFF state and 1.0–5.5 V for ON state, enabling clean enable/disable sequencing. The Auto-discharge function actively discharges VOUT when CONTROL is low, preventing residual voltage hold-up in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.5 V ±1.0% (guaranteed accuracy for stable biasing of RF amplifiers and ADC references) |
| Max Output Current | 200 mA DC (supports dual-rail analog ICs or multi-stage RF front-ends without thermal derating) |
| Dropout Voltage | 150 mV typ. at 150 mA (enables operation from 4.65 V input, critical for single-cell Li-ion or 5 V rail margin) |
| Output Noise | 35 μVrms (10 Hz–100 kHz) (low enough for 16-bit SAR ADC reference supplies without additional filtering) |
| Ripple Rejection | 73 dB typ. at 1 kHz (attenuates switching regulator coupling into sensitive analog stages) |
| Quiescent Current | 35 μA typ. at zero load (extends battery life in always-on sensor nodes) |
| Operating Temp | −40°C to +85°C (qualified for industrial-grade embedded applications) |
Pinout & Package
TCR2EE45,LM is packaged in ESV (SOT-553), a 1.6 mm × 1.6 mm × 0.55 mm surface-mount package weighing 3.0 mg (typ.). This ultra-compact footprint supports high-density PCB layouts in space-constrained IoT modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 1.5–5.5 V; must be decoupled with ≥0.1 μF ceramic capacitor near pin |
| VOUT | Regulated Output | Delivers stable 4.5 V; requires ≥1.0 μF ceramic capacitor with ESR <10 Ω for stability |
| GND | Ground Reference | Common return path for VIN, VOUT, and CONTROL; must connect to low-impedance ground plane |
| CONTROL | Enable/Disable Input | Logic-high (≥1.0 V) enables regulation; logic-low (≤0.4 V) disables output and activates auto-discharge |
| NC | No Connect | Internally unconnected; must remain floating or grounded per layout best practices (not tied to signals) |
Key Features
| Feature | Design Value |
|---|---|
| Fast Load Transient Response | ±60 mV deviation during 1 mA ↔ 150 mA step (minimizes voltage sag in burst-mode RF transceivers) |
| Auto-Discharge Function | Actively pulls VOUT to GND when CONTROL = LOW (eliminates need for external bleed resistors in battery cutoff) |
| Ceramic Capacitor Compatibility | Stable with CIN = 0.1 μF and COUT = 1.0 μF (reduces BOM count and board area vs. tantalum alternatives) |
| Overcurrent Protection | Current-limiting triggers at ~250 mA (protects against short-circuit faults without latch-up) |
| Pull-Down on CONTROL | Internal pull-down between CONTROL and GND (ensures default-OFF state if enable line floats) |
Applications
| Portable RF Transceiver Power | Analog Sensor Signal Chain |
|---|---|
|
Use Scenario: Powering 4.5 V local oscillator (LO) buffers and mixer bias in sub-GHz ISM band transceivers. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO supplying clean VDD to RF active components. Use Value: 35 μVrms noise prevents phase noise degradation; ±60 mV transient response avoids LO pulling during TX bursts. |
Use Scenario: Biasing precision op-amps and 16-bit SAR ADCs in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Stable 4.5 V reference and analog supply rail decoupled from noisy digital domains. Use Value: ±1.0% accuracy ensures consistent ADC full-scale; 73 dB ripple rejection suppresses digital switching noise. |
| Wearable Health Monitor | Industrial IoT Edge Node |
|
Use Scenario: Supplying 4.5 V to optical heart-rate sensor analog front-end (AFE) and photodiode amplifier. IC Role / Device Role / Timing Role: Ultra-low-quiescent LDO enabling multi-week battery life while maintaining analog integrity. Use Value: 35 μA IQ extends coin-cell lifetime; auto-discharge prevents phantom drain when device sleeps. |
Use Scenario: Providing regulated 4.5 V to RS-485 transceivers and isolated ADCs in factory-floor condition monitors. IC Role / Device Role / Timing Role: Industrial-grade LDO with −40°C to +85°C operation and robust overcurrent protection. Use Value: 200 mA drive capability powers multiple interface ICs; 150 mV dropout preserves headroom under 5 V rail sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TCS2EF45,LM | Same 4.5 V output, but SMV (SOT-25) package (2.8 mm × 2.9 mm); higher thermal resistance; 200 mW unit PD rating | Better suited for prototyping or legacy designs using SOT-25 footprints; less compact than ESV | Select if board layout already uses SOT-25 or requires higher power dissipation margin |
| MCP1703T-4502E/MB | 4.5 V output, 250 mA rating, 600 mV max dropout, 45 μVrms noise, SOT-23-5 package | Higher dropout limits use with lower-input rails; slightly higher noise affects ultra-low-phase-noise RF | Choose when cost sensitivity outweighs ultra-low-noise requirements and 5.5 V input is available |
Compared with TCR2EE45,LM, the TCS2EF45,LM offers identical electrical performance in a larger, thermally more robust package, while the MCP1703T-4502E/MB trades off noise and dropout for broader vendor availability and higher current-but at reduced efficiency and noise performance in sensitive analog rails.
Availability
TCR2EE45,LM is available at Aetrix Electronics and suitable for portable RF transceivers, analog sensor signal chains, wearable health monitors, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term sourcing.
Supply support for TCR2EE45,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-reliability semiconductor solutions for industrial, automotive, and consumer applications, with emphasis on energy efficiency and miniaturization.
The TCR2EE series targets space-constrained, battery-powered systems needing ultra-low-noise, fast-transient LDOs-specifically optimized for analog/RF power integrity in portable and IoT devices.
FAQ
What is the maximum input voltage rating for TCR2EE45,LM?
The absolute maximum input voltage for TCR2EE45,LM is 6.0 V. However, the recommended operating range is 1.5 V to 5.5 V. Exceeding 5.5 V risks permanent damage even if within absolute maximum ratings, and operation above 5.5 V violates the specified operating conditions defined in Toshiba's datasheet for TCR2EE45,LM.
Does TCR2EE45,LM require an external pull-up resistor on the CONTROL pin?
No, TCR2EE45,LM includes an internal pull-down between CONTROL and GND, ensuring a defined OFF state when the pin is left floating. An external pull-up is unnecessary and may interfere with proper enable/disable sequencing; only a clean logic-level signal (0–0.4 V for OFF, 1.0–5.5 V for ON) is required to drive the CONTROL pin of TCR2EE45,LM.
Can TCR2EE45,LM operate with a 1.0 μF ceramic output capacitor having 20 Ω ESR?
No. Toshiba specifies that the ESR of the ceramic output capacitor used with TCR2EE45,LM must be under 10 Ω to ensure stability. A 20 Ω ESR exceeds this limit and may cause oscillation or poor transient response. For reliable operation, select a 1.0 μF X5R/X7R ceramic capacitor rated for ≤10 Ω ESR across the operating temperature range of TCR2EE45,LM.
What is the dropout voltage of TCR2EE45,LM at 200 mA load?
The dropout voltage of TCR2EE45,LM is not characterized at 200 mA in the official datasheet. Specifications are provided up to 150 mA, where VDO = 150 mV (typ.) for 4.5 V output. At 200 mA, the device remains within its absolute maximum rating but may exceed the guaranteed 150 mV dropout; design margins should assume ≥200 mV to ensure regulation under full-load conditions for TCR2EE45,LM.
Is TCR2EE45,LM RoHS-compliant and lead-free?
Yes, TCR2EE45,LM is RoHS-compliant and lead-free, consistent with Toshiba's environmental policy and the EU RoHS Directive. The ESV (SOT-553) package uses lead-free matte tin plating, and material declarations confirm compliance with all restricted substances. Full compliance documentation for TCR2EE45,LM is available through Toshiba's official product portal.
TCR2EE45,LM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TCR2EE
- Package/Case:
- SOT-553
- 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):
- 4.5V
- 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:
- ESV
TCR2EE45,LM FAQ
1.How can I place an order for TCR2EE45,LM through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EE45,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 TCR2EE45,LM reliable?
The price and inventory of TCR2EE45,LM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2EE45,LM is usually 5 days.
3.What payment methods are accepted for TCR2EE45,LM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EE45,LM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EE45,LM?
TCR2EE45,LM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EE45,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 TCR2EE45,LM?
For technical support, including TCR2EE45,LM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EE45,LM requirements.
6.How does Aetrix verify that TCR2EE45,LM is sourced from the original manufacturer or authorized distributors?
All TCR2EE45,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 TCR2EE45,LM meets industry standards.
7.What is the process for return or replacement of TCR2EE45,LM?
All TCR2EE45,LM units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EE45,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 TCR2EE45,LM part is unused and in its original packaging.
Return procedure for TCR2EE45,LM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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