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Toshiba Semiconductor and Storage TCR2EN29,LF
- Part No.:
- TCR2EN29,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TCR2EN29,LF.pdf
- Description:
- IC REG LINEAR 2.9V 200MA 4SDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,324
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Product details
Overview
TCR2EN29,LF from Toshiba Electronic Devices & Storage Corporation is a 2.9 V fixed-output CMOS low dropout (LDO) voltage regulator in an ultra-small SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm), delivering up to 200 mA with 160 mV typical dropout at 150 mA, 35 µVrms output noise, and ±55 mV load transient response. It integrates on/off control, overcurrent protection, and auto-discharge - optimized for space-constrained portable electronics such as cellular phones and wearable sensors.
For engineers reviewing the TCR2EN29,LF datasheet, TCR2EN29,LF pinout, TCR2EN29,LF application, or TCR2EN29,LF equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative LDOs with documented functional and parametric differences.
Technical Context
The TCR2EN29,LF operates as a single-output, CMOS-based linear regulator with integrated control logic enabling active high enable (CONTROL pin threshold: 1.0–5.5 V ON, 0–0.4 V OFF). Its internal architecture supports fast load transient recovery (±55 mV step change, 1 mA ↔ 150 mA) via internal compensation compatible with 1.0 µF ceramic output capacitors.
It features a dedicated auto-discharge path activated when CONTROL = LOW, discharging VOUT through an internal resistor to GND. Dropout voltage is tightly specified at 160 mV (typ.) for 2.9 V output at 150 mA, and output accuracy is ±1.0% across 1.8–3.6 V variants - confirmed for TCR2EN29,LF per Electrical Characteristics table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9 V ±1.0% (guaranteed over temperature and load) |
| Max Output Current | 200 mA - supports moderate-power RF modules or sensor subsystems without thermal derating on standard FR4 |
| Dropout Voltage | 160 mV (typ.) at 150 mA - enables stable 2.9 V regulation from 3.06 V input (e.g., single Li-ion cell near EOD) |
| Quiescent Current | 35 µA (typ.) at zero load - extends battery life in always-on IoT endpoints |
| Output Noise | 35 µVrms (10 Hz–100 kHz) - suitable for noise-sensitive analog circuits like ADC references or RF synthesizers |
| Ripple Rejection | 73 dB (typ., 1 kHz) - suppresses switching noise from upstream DC/DC converters feeding the LDO input |
| Control Logic | Active-high ENABLE with 1.0 V min ON threshold - interfaces directly with 1.8 V/3.3 V GPIO without level shifters |
Pinout & Package
TCR2EN29,LF uses the ultra-compact SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg weight), with exposed center pad recommended to be connected to GND for thermal and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 1.5–5.5 V input; requires 0.1 µF ceramic decoupling close to pin |
| VOUT | Regulated output | Delivers stable 2.9 V; connects to 1.0 µF ceramic capacitor for transient stability |
| GND | Ground reference | Common return for VIN, VOUT, CONTROL; center pad must be soldered to GND plane |
| CONTROL | Enable/disable control input | Active-high logic: ≥1.0 V enables regulator; ≤0.4 V disables with auto-discharge active |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | SDFN4/SDFN4E (0.8 mm × 0.8 mm) - saves >70% board area vs. SOT-23, critical for multi-rail wearables |
| Auto-discharge function | Internal discharge path activates at CONTROL = LOW - prevents residual voltage hold-up on powered-down rails |
| Ceramic capacitor compatibility | Stable with 0.1 µF input / 1.0 µF output ceramics - eliminates tantalum, reduces BOM cost and size |
| Low-noise regulation | 35 µVrms noise floor - avoids signal integrity degradation in precision analog front-ends |
| Fast load transient response | ±55 mV deviation during 1 mA ↔ 150 mA step - maintains system stability during burst-mode MCU operation |
Applications
| Smartphone Power Rail | Wearable Sensor Hub |
|---|---|
Use Scenario: Supplying 2.9 V to baseband processor I/O or camera module interface in LTE/5G handsets. IC Role / Device Role / Timing Role: Primary low-noise, fast-transient LDO for noise-sensitive digital I/O domains. Use Value: Enables clean 2.9 V rail from shared PMIC output while rejecting switching noise and maintaining tight regulation during RF transmit bursts. |
Use Scenario: Powering MEMS accelerometer, gyroscope, and BLE radio in compact fitness trackers. IC Role / Device Role / Timing Role: Standby-optimized LDO with auto-discharge for intermittent-sensing subsystems. Use Value: 35 µA quiescent current extends coin-cell life; auto-discharge ensures rapid rail collapse between sensor readings. |
| IoT Edge Node MCU Core | Industrial Wireless Sensor |
Use Scenario: Providing regulated 2.9 V to ARM Cortex-M0+ core and ADC in battery-powered edge nodes. IC Role / Device Role / Timing Role: Main system LDO with enable control synchronized to MCU sleep/wake cycles. Use Value: 160 mV dropout allows operation down to 3.06 V input - maximizes usable capacity from single Li-SOCl₂ primary cells. |
Use Scenario: Powering LoRa transceiver and environmental sensors in sealed industrial enclosures. IC Role / Device Role / Timing Role: High-accuracy, thermally robust LDO for long-life deployments. Use Value: ±1.0% output accuracy and 75 ppm/°C tempco ensure consistent sensor calibration across −40°C to +85°C ambient range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B292MR-G | 2.9 V fixed, 200 mA, SOT-25 package (2.9 mm × 2.8 mm); 250 mV dropout at 150 mA; 45 µVrms noise | Larger footprint; higher dropout limits minimum input voltage to ~3.15 V | Choose if board layout allows larger package and lower noise is not critical |
| Rohm BD3572EFJ-ME2 | 2.9 V fixed, 300 mA, HTSOP-J8 package; 200 mV dropout at 200 mA; 60 µVrms noise; no auto-discharge | Higher current capability but larger size (4.9 mm × 6.0 mm); lacks auto-discharge | Choose only if >200 mA load required and auto-discharge is unnecessary |
Compared with TCR2EN29,LF, the XC6219B292MR-G trades ultra-small size and lower dropout for slightly higher noise and larger footprint, while the BD3572EFJ-ME2 offers higher current but sacrifices miniaturization and auto-discharge - making TCR2EN29,LF optimal for space- and battery-life-critical portable designs.
Availability
TCR2EN29,LF is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, IoT edge node MCUs, industrial wireless sensors, and portable medical devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TCR2EN29,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 analog, power, and logic ICs.
The TCR2EN series targets ultra-compact, low-power portable electronics - engineered specifically for high-density PCBs where minimal footprint, low quiescent current, and fast transient response are mandatory.
FAQ
What is the guaranteed output voltage tolerance for TCR2EN29,LF?
The TCR2EN29,LF guarantees ±1.0% output voltage accuracy for its 2.9 V nominal output across operating conditions (1.8 V ≤ VOUT), as specified in the Electrical Characteristics table under "Output voltage accuracy" with test condition IOUT = 50 mA and Tj = 25°C. This tolerance holds over the full −40°C to +85°C operating temperature range.
Does TCR2EN29,LF require external components to operate stably?
Yes - TCR2EN29,LF requires a 0.1 µF ceramic capacitor on VIN and a 1.0 µF ceramic capacitor on VOUT, placed as close as possible to their respective pins. These values are validated in the datasheet for stability and transient performance; using smaller or non-ceramic types may cause oscillation or degraded load response.
How does the auto-discharge function work in TCR2EN29,LF?
When the CONTROL pin voltage drops below 0.4 V (OFF state), TCR2EN29,LF activates an internal discharge switch between VOUT and GND. This rapidly discharges the output capacitor, preventing residual voltage from powering downstream circuitry - essential for clean power sequencing in multi-rail systems.
What is the maximum allowable input voltage for TCR2EN29,LF?
The absolute maximum input voltage for TCR2EN29,LF is 6.0 V, as defined in the Absolute Maximum Ratings table. However, for reliable operation within specifications, the recommended input voltage range is 1.5 V to 5.5 V - exceeding 5.5 V risks violating line regulation and thermal limits even if below absolute max.
Can TCR2EN29,LF be used with a 1.0 V input supply?
No - TCR2EN29,LF cannot regulate from a 1.0 V input. Its minimum input voltage is 1.5 V (per Electrical Characteristics), and with a 160 mV typical dropout, it requires at least 3.06 V input to sustain 2.9 V output at 150 mA. Operation below 1.5 V violates specification and may result in unregulated or undefined behavior.
TCR2EN29,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):
- 2.9V
- 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)
TCR2EN29,LF FAQ
1.How can I place an order for TCR2EN29,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EN29,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 TCR2EN29,LF reliable?
The price and inventory of TCR2EN29,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2EN29,LF is usually 5 days.
3.What payment methods are accepted for TCR2EN29,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EN29,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EN29,LF?
TCR2EN29,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EN29,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 TCR2EN29,LF?
For technical support, including TCR2EN29,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EN29,LF requirements.
6.How does Aetrix verify that TCR2EN29,LF is sourced from the original manufacturer or authorized distributors?
All TCR2EN29,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 TCR2EN29,LF meets industry standards.
7.What is the process for return or replacement of TCR2EN29,LF?
All TCR2EN29,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EN29,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 TCR2EN29,LF part is unused and in its original packaging.
Return procedure for TCR2EN29,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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