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Toshiba Semiconductor and Storage TCR2EN11,LF
- Part No.:
- TCR2EN11,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TCR2EN11,LF.pdf
- Description:
- IC REG LINEAR 1.1V 200MA 4SDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,840
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Product details
Overview
TCR2EN11,LF from Toshiba Electronic Devices & Storage Corporation is a 1.1 V fixed-output, 200 mA CMOS low dropout regulator in an ultra-small SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm), featuring 420 mV typical dropout at 150 mA load, ±1.0% output accuracy (for VOUT ≥ 1.8 V; 1.1 V variant specified to ±18 mV), and 35 µVrms output noise at 2.5 V - deployed in space-constrained portable power rails for baseband processors and RF front-ends.
For engineers reviewing the TCR2EN11,LF datasheet, TCR2EN11,LF pinout, TCR2EN11,LF application, or TCR2EN11,LF equivalent, key selection criteria include its 35 µA typical quiescent current, fast ±55 mV load transient response (1 mA ↔ 150 mA), on/off control input with 0.4 V max OFF threshold, Auto-discharge function, and compatibility with 0.1 µF ceramic input / 1.0 µF ceramic output capacitors.
Technical Context
The TCR2EN11,LF implements a CMOS-based LDO architecture with internal P-channel pass transistor, enabling low dropout and minimal quiescent current. Its control logic accepts TTL-compatible ON/OFF signals (VCT(OFF) ≤ 0.4 V, VCT(ON) ≥ 1.0 V) and activates internal discharge FET when disabled.
It integrates overcurrent protection with foldback behavior and supports stable operation with ceramic capacitors down to 0.1 µF on VIN and 1.0 µF on VOUT, leveraging internal compensation optimized for ESR < 10 Ω. The device operates across −40°C to +85°C ambient and maintains 73 dB ripple rejection at 1 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1 V (±18 mV accuracy at 50 mA, −40°C to +85°C) |
| Max Output Current | 200 mA continuous; sustains 150 mA at 420 mV dropout (VIN ≥ 1.52 V) |
| Dropout Voltage | 420 mV (typ.) at IOUT = 150 mA - enables regulation from 1.52 V input for 1.1 V rail |
| Quiescent Current | 35 µA (typ.) at zero load - minimizes standby power in battery-powered systems |
| Output Noise | 23 µVrms (typ.) at 1.1 V output, 10 Hz–100 kHz - suitable for noise-sensitive analog/RF circuitry |
| Ripple Rejection | 73 dB (typ.) at 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Load Transient | ±55 mV (typ.) for 1 mA ↔ 150 mA step, COUT = 1.0 µF - ensures stable core voltage during processor burst loads |
Pinout & Package
TCR2EN11,LF uses the ultra-compact SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg weight) with wettable flank terminals for optical solder inspection. The exposed center pad is internally connected to GND and must be soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply connection | Accepts 1.5–5.5 V input; requires 0.1 µF ceramic capacitor placed adjacent to pin |
| VOUT | Regulated output node | Delivers stable 1.1 V; requires 1.0 µF ceramic capacitor with ESR < 10 Ω directly at pin |
| GND | Power and control reference | Common return for VIN, VOUT, CONTROL; center pad must be connected to PCB ground plane |
| CONTROL | Enable/disable logic input | Active-high TTL-compatible control: <0.4 V = OFF (discharge enabled), ≥1.0 V = ON |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | SDFN4/SDFN4E (0.8 mm × 0.8 mm) saves >70% board area vs. SOT-23, enabling high-density mobile PCBs |
| Auto-discharge function | Internally discharges VOUT via dedicated FET when CONTROL = LOW - prevents residual voltage hold-up in power sequencing |
| Low-noise regulation | 23 µVrms noise at 1.1 V output ensures clean supply for ADCs, PLLs, and RF synthesizers |
| Fast load transient recovery | ±55 mV deviation under 150 mA step load enables reliable operation with burst-mode processors and wireless modems |
| High accuracy at low VOUT | ±18 mV tolerance (1.1 V) over temperature and line/load - supports tight-margin digital core rails |
Applications
| Smartphone Baseband Power | Wearable Sensor Hub Supply |
|---|---|
Use Scenario: Powers ARM Cortex-M4F core and integrated ADC/DAC in compact smartphone application processors. IC Role / Device Role / Timing Role: Primary 1.1 V core LDO delivering regulated voltage with fast transient response to match CPU DVFS transitions. Use Value: Enables 35 µA quiescent current and ±55 mV load step stability - extending battery life while maintaining real-time signal integrity. | Use Scenario: Supplies 1.1 V to MEMS accelerometer, gyroscope, and BLE SoC in ultra-thin fitness trackers. IC Role / Device Role / Timing Role: Low-noise, always-on LDO with Auto-discharge for controlled power-down during sleep mode. Use Value: 23 µVrms noise prevents sensor offset drift; 0.4 V CONTROL threshold ensures seamless integration with 1.8 V GPIOs. |
| IoT Edge Node MCU Core | Portable Medical Pulse Oximeter |
Use Scenario: Provides 1.1 V core voltage to RISC-V MCU in battery-operated LPWAN edge nodes. IC Role / Device Role / Timing Role: Enable-controlled LDO supporting deep-sleep wake-up sequences with rapid VOUT stabilization. Use Value: 420 mV dropout allows operation down to 1.52 V battery voltage; 35 µA IB extends multi-year battery life. | Use Scenario: Regulates 1.1 V for analog front-end (AFE) and optical driver ICs in handheld pulse oximeters. IC Role / Device Role / Timing Role: Precision low-noise LDO ensuring stable bias for photodiode transimpedance amplifiers and LED drivers. Use Value: ±18 mV output accuracy and 23 µVrms noise minimize SpO₂ measurement error and improve SNR. |
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 XC6210B112MR-G | Same 1.1 V output, 200 mA rating, SOT-25 package (2.9 mm × 2.8 mm); 250 mV dropout at 150 mA; no Auto-discharge | Larger footprint; lacks active discharge - requires external circuitry for VOUT bleed-down | Choose when board area is not constrained and Auto-discharge is unnecessary |
| Rohm BD3941FP-ME2 | 1.1 V output, 300 mA rating, HTSOP-J8 package; 300 mV dropout at 150 mA; includes thermal shutdown | Higher current capability and thermal protection; larger 4.9 mm × 6.0 mm package; no CONTROL pin | Choose for higher-current or thermally demanding environments where enable control is secondary |
Compared with TCR2EN11,LF, the XC6210B112MR-G offers lower dropout but lacks Auto-discharge and occupies 9× more PCB area, while the BD3941FP-ME2 provides thermal safety and higher current but sacrifices enable control and miniaturization - making TCR2EN11,LF optimal for ultra-compact, enable-driven, low-noise portable designs.
Availability
TCR2EN11,LF is available at Aetrix Electronics and suitable for smartphone baseband power, wearable sensor hub supply, IoT edge node MCU core, portable medical pulse oximeter, and other space- and noise-constrained applications requiring stable component supply across production lifecycles.
Supply support for TCR2EN11,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-efficiency, miniaturized semiconductor solutions for consumer, industrial, and automotive markets, with emphasis on power management, logic, and memory technologies.
The TCR2EN series targets ultra-portable electronics requiring sub-1-mm² LDOs with low IQ, low noise, and fast transient response - specifically engineered for battery-powered devices where board area, efficiency, and signal integrity are critical.
FAQ
What is the guaranteed output voltage accuracy of TCR2EN11,LF across temperature and load?
The TCR2EN11,LF guarantees ±18 mV output voltage accuracy (±1.64% of 1.1 V) at IOUT = 50 mA and −40°C to +85°C ambient, per Electrical Characteristics Table on page 4 of the official Toshiba datasheet. This specification applies specifically to the 1.1 V variant and differs from the ±1.0% tolerance used for outputs ≥1.8 V.
Does TCR2EN11,LF require an external pull-down resistor on the CONTROL pin?
No, TCR2EN11,LF includes an internal pull-down between CONTROL and GND, as stated in the Features list. The CONTROL pin is TTL-compatible with VCT(OFF) ≤ 0.4 V and VCT(ON) ≥ 1.0 V, eliminating need for external biasing in most microcontroller interface scenarios.
Can TCR2EN11,LF operate with only 0.1 µF input capacitance and no output capacitor?
No - while TCR2EN11,LF supports 0.1 µF ceramic input capacitance, it requires a minimum 1.0 µF ceramic output capacitor (ESR < 10 Ω) for stability, as confirmed in the Application Note (page 5) and Absolute Maximum Ratings section. Omitting COUT risks oscillation and failed regulation.
What is the maximum allowable input voltage for TCR2EN11,LF, and what happens above that limit?
The absolute maximum input voltage for TCR2EN11,LF is 6.0 V, per Absolute Maximum Ratings (page 2). Exceeding this value may cause permanent damage. Operation above 5.5 V (recommended max per Electrical Characteristics) degrades dropout performance and increases risk of thermal overstress, especially at high output currents.
How does the Auto-discharge function behave during CONTROL pin assertion in TCR2EN11,LF?
When the CONTROL pin is driven LOW (<0.4 V), TCR2EN11,LF disables the pass transistor and activates an internal discharge FET between VOUT and GND, rapidly bleeding stored charge from the output capacitor. This behavior is confirmed in the Features list and Application Circuit diagram (page 5), ensuring controlled power-down without external components.
TCR2EN11,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):
- 1.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.65V @ 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)
TCR2EN11,LF FAQ
1.How can I place an order for TCR2EN11,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EN11,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 TCR2EN11,LF reliable?
The price and inventory of TCR2EN11,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2EN11,LF is usually 5 days.
3.What payment methods are accepted for TCR2EN11,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EN11,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EN11,LF?
TCR2EN11,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EN11,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 TCR2EN11,LF?
For technical support, including TCR2EN11,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EN11,LF requirements.
6.How does Aetrix verify that TCR2EN11,LF is sourced from the original manufacturer or authorized distributors?
All TCR2EN11,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 TCR2EN11,LF meets industry standards.
7.What is the process for return or replacement of TCR2EN11,LF?
All TCR2EN11,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EN11,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 TCR2EN11,LF part is unused and in its original packaging.
Return procedure for TCR2EN11,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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