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Toshiba Semiconductor and Storage TCR2EN27,LF
- Part No.:
- TCR2EN27,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TCR2EN27,LF.pdf
- Description:
- IC REG LINEAR 2.7V 200MA 4SDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,829
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Product details
Overview
TCR2EN27,LF from Toshiba Electronic Devices & Storage Corporation is a 2.7 V fixed-output CMOS low dropout regulator delivering up to 200 mA, featuring 160 mV typical dropout at 150 mA load, 35 µVrms output noise, and ±55 mV load transient response with 1.0 µF ceramic output capacitor - deployed in space-constrained portable power rails for cellular phone baseband ICs.
For engineers reviewing the TCR2EN27,LF datasheet, TCR2EN27,LF pinout, TCR2EN27,LF application, or TCR2EN27,LF equivalent, key selection criteria include ultra-small SDFN4E package compatibility, on/off control interface timing, Auto-discharge functionality for system power sequencing, and ±1.0% output accuracy across –40°C to +85°C operating range.
Technical Context
The TCR2EN27,LF implements a CMOS-based LDO architecture with integrated P-channel pass transistor, enabling low quiescent current (35 µA typ.) and fast transient recovery without external compensation. Its control input accepts TTL/CMOS-compatible logic levels (VCT(OFF) ≤ 0.4 V, VCT(ON) ≥ 1.0 V) and supports pull-down connection to GND.
Designed for high-density portable systems, it operates with minimal external components: only 0.1 µF input and 1.0 µF output ceramic capacitors are required. The device integrates overcurrent protection and an Auto-discharge path that actively discharges VOUT when disabled, preventing residual voltage hold-up in battery-powered subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.7 V ±1.0% (1.8 V ≤ VOUT), enabling stable supply for 2.7 V I/O domains and RF front-end biasing. |
| Max output current | 200 mA continuous - sufficient to power baseband processors, PMIC sub-regulators, or sensor hubs in compact handheld devices. |
| Dropout voltage | 160 mV (typ.) at 150 mA - allows operation from 2.86 V input (e.g., single Li-ion cell at end-of-discharge) while maintaining regulation. |
| Quiescent current | 35 µA (typ.) at zero load - minimizes standby power loss in always-on circuits like real-time clocks or wake-up controllers. |
| Output noise | 35 µVrms (10 Hz–100 kHz) - low enough to avoid interference in sensitive analog signal chains (e.g., audio codecs, ADC references). |
| Ripple rejection | 73 dB (typ., 1 kHz) - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Load transient response | ±55 mV (IOUT step 1 mA ↔ 150 mA, COUT = 1.0 µF) - maintains system stability during burst-mode processor activity without external compensation. |
| Operating temperature | –40°C to +85°C - qualified for commercial and industrial portable equipment environments. |
Pinout & Package
TCR2EN27,LF is housed in the ultra-small SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg weight), featuring a bottom-exposed thermal pad connected internally to GND. Pin 1 (VOUT) and Pin 4 (VIN) are positioned diagonally for optimal decoupling layout; the center thermal pad must be soldered to a GND plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output | Delivers stable 2.7 V to load; requires 1.0 µF ceramic capacitor placed adjacent to pin for transient stability. |
| CONTROL (Pin 2) | Enable/disable input | Active-high logic input; drives internal pass transistor gate; supports automatic discharge of VOUT when pulled low. |
| GND (Pin 3) | Ground reference | Common return for input/output currents and control logic; connects to exposed thermal pad for thermal dissipation. |
| VIN (Pin 4) | Input supply | Accepts 1.5–5.5 V input; requires 0.1 µF ceramic capacitor near pin to suppress high-frequency noise and stabilize regulation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | SDFN4E package (0.8 mm × 0.8 mm) enables placement in <1.0 mm² board area - critical for multi-rail PMIC integration in smartphones. |
| Auto-discharge function | Internally discharges VOUT to <0.1 V within microseconds of CONTROL deactivation - eliminates need for external bleed resistors in power-gated subsystems. |
| Ceramic capacitor compatibility | Stable with 0.1 µF CIN and 1.0 µF COUT (ESR <10 Ω) - avoids tantalum or electrolytic parts, reducing BOM cost and improving reliability. |
| Low-noise regulation | 35 µVrms noise floor ensures clean supply for noise-sensitive analog blocks (e.g., PLLs, RF synthesizers, precision ADCs). |
| Fast load transient recovery | ±55 mV deviation under 1 mA ↔ 150 mA load steps - maintains digital core voltage integrity during CPU frequency scaling events. |
| Overcurrent protection | Current-limiting circuit limits output to ~250 mA during short-circuit conditions - prevents thermal runaway and protects upstream power sources. |
Applications
| Smartphone Baseband Power | Wearable Sensor Hub Supply |
|---|---|
|
Use Scenario: Powers application processor I/O domain and memory interface in LTE/5G handsets where board space is constrained and battery voltage varies from 4.2 V down to 2.8 V. IC Role / Device Role / Timing Role: Primary 2.7 V LDO supplying level-shifted GPIOs and DDR I/O buffers; provides regulated rail independent of main DC-DC converter ripple. Use Value: 160 mV dropout enables full regulation across entire Li-ion discharge curve; ±1.0% accuracy ensures reliable signal integrity at high-speed interfaces. |
Use Scenario: Supplies 2.7 V to MEMS accelerometers, gyroscopes, and Bluetooth LE SoCs in fitness trackers with tight thermal and size constraints. IC Role / Device Role / Timing Role: Always-on LDO with Auto-discharge, enabling rapid power cycling of sensor subsystems between motion-detection intervals. Use Value: 35 µA quiescent current extends battery life beyond 7 days; fast transient response prevents sensor data corruption during wake-up bursts. |
| IoT Edge Node RF Bias | Portable Medical Diagnostic Module |
|
Use Scenario: Provides clean 2.7 V bias to UWB transceivers and sub-GHz RF front-ends in asset-tracking tags operating from coin-cell batteries. IC Role / Device Role / Timing Role: Low-noise post-regulator filtering switching converter output; CONTROL pin synchronized to transmit/receive duty cycles. Use Value: 73 dB ripple rejection isolates RF circuitry from DC-DC switching noise; 35 µVrms noise preserves EVM performance in narrowband modulations. |
Use Scenario: Delivers stable 2.7 V to analog front-end (AFE) and microcontroller in handheld ECG or pulse oximetry devices requiring clinical-grade signal fidelity. IC Role / Device Role / Timing Role: Precision LDO powering ADC reference and op-amp stages; Auto-discharge ensures safe shutdown during patient disconnect events. Use Value: ±1.0% output accuracy and low temperature coefficient (75 ppm/°C) maintain measurement linearity across ambient temperature shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B271MR-G | Same 2.7 V output, 200 mA rating, SOT-25 package (2.9 mm × 2.8 mm); higher 250 mV dropout at 150 mA; no Auto-discharge. | Larger footprint limits use in ultra-thin wearables; absence of Auto-discharge requires external discharge circuit for power sequencing. | Select when board area permits larger package and Auto-discharge is not required. |
| Rohm BD3985FVM-2.7TR | 2.7 V, 300 mA, HTSOP-J8 package (4.0 mm × 4.0 mm); 180 mV dropout; includes thermal shutdown but no Auto-discharge. | Thermal robustness suits higher-power loads, but 5× larger footprint and lack of fast discharge limit suitability for compact battery-gated systems. | Select for higher-current applications where thermal margin is prioritized over size and sequencing control. |
Compared with TCR2EN27,LF, the XC6219B271MR-G trades ultra-small size and Auto-discharge for lower cost and wider availability, while the BD3985FVM-2.7TR offers greater current headroom at the expense of PCB area and advanced power-control features - making TCR2EN27,LF optimal for miniaturized, sequenced-power portable designs.
Availability
TCR2EN27,LF is available at Aetrix Electronics and suitable for smartphone baseband power, wearable sensor hub supply, IoT edge node RF bias, portable medical diagnostic modules, and other applications requiring stable component supply with ultra-small footprint and precise low-noise regulation.
Supply support for TCR2EN27,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 high-reliability semiconductor solutions for consumer, industrial, and automotive markets, with expertise in power management, logic, and analog ICs.
The TCR2EN series targets space-constrained portable electronics, delivering ultra-low-noise, low-quiescent-current LDO regulation in sub-1 mm² packages for next-generation mobile and wearable devices.
FAQ
What is the maximum input voltage rating for TCR2EN27,LF?
The TCR2EN27,LF has an absolute maximum input voltage (VIN) of 6.0 V. Its recommended operating input range is 1.5 V to 5.5 V, ensuring reliable regulation across common battery chemistries including single-cell Li-ion (2.8–4.2 V) and 3.3 V system rails. Exceeding 6.0 V risks permanent damage per Toshiba's Absolute Maximum Ratings table.
Does TCR2EN27,LF require an external resistor for the CONTROL pin?
No, TCR2EN27,LF includes an internal pull-down connection between CONTROL and GND, eliminating the need for an external resistor. The CONTROL pin accepts standard TTL/CMOS logic levels (VCT(OFF) ≤ 0.4 V, VCT(ON) ≥ 1.0 V), and when left unconnected (OPEN), the device remains in OFF state due to this internal termination - simplifying system-level enable control design.
Can TCR2EN27,LF operate with a 0.1 µF input capacitor and no output capacitor?
No - TCR2EN27,LF requires both input and output capacitors for stable operation. The datasheet specifies minimum 0.1 µF ceramic CIN and 1.0 µF ceramic COUT. Omitting COUT causes instability, excessive overshoot/undershoot during load transients, and potential oscillation. The Auto-discharge function also relies on COUT being present to safely dissipate stored charge.
What is the thermal performance of TCR2EN27,LF in the SDFN4E package?
In the SDFN4E package, TCR2EN27,LF achieves a thermal resistance θJA of approximately 220°C/W on a standard FR4 board (40 mm × 40 mm, 50% copper coverage). At 150 mA load and 200 mV dropout, power dissipation is ~30 mW, resulting in ~6.6°C junction-to-ambient rise - well within the 150°C max junction temperature limit. Proper soldering of the exposed thermal pad to a GND plane is essential to realize this performance.
How does the Auto-discharge function behave during CONTROL pin deactivation?
When the CONTROL pin is driven low (≤0.4 V), TCR2EN27,LF disables the pass transistor and activates an internal discharge switch between VOUT and GND. This discharges the output capacitor rapidly - typically reducing VOUT to <0.1 V within tens of microseconds - ensuring no residual voltage remains on downstream circuits during power-down sequences, which is critical for safe reset and isolation in portable systems.
TCR2EN27,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TCR2EN
- 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):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.21V @ 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:
- 4-SDFN (0.8x0.8)
TCR2EN27,LF FAQ
1.How can I place an order for TCR2EN27,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EN27,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 TCR2EN27,LF reliable?
The price and inventory of TCR2EN27,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2EN27,LF is usually 5 days.
3.What payment methods are accepted for TCR2EN27,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EN27,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EN27,LF?
TCR2EN27,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EN27,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 TCR2EN27,LF?
For technical support, including TCR2EN27,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EN27,LF requirements.
6.How does Aetrix verify that TCR2EN27,LF is sourced from the original manufacturer or authorized distributors?
All TCR2EN27,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 TCR2EN27,LF meets industry standards.
7.What is the process for return or replacement of TCR2EN27,LF?
All TCR2EN27,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EN27,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 TCR2EN27,LF part is unused and in its original packaging.
Return procedure for TCR2EN27,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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