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Toshiba Semiconductor and Storage TCR2EN19,LF(SE
- Part No.:
- TCR2EN19,LF(SE
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TCR2EN19,LF(SE.pdf
- Description:
- LDO REG VOUT=1.9V IOUT=200MA
- Quantity:
- Payment:
- Shipping:
Inventory:9,988
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Product details
Overview
TCR2EN19,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a 1.9 V fixed-output, 200 mA CMOS low-dropout (LDO) voltage regulator in an ultra-small SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm), featuring 160 mV dropout at 150 mA, 35 µVrms output noise, ±55 mV load transient response, and Auto-discharge functionality. It serves as a precision power supply for core logic rails in space-constrained portable electronics.
For engineers reviewing the TCR2EN19,LF(SE) datasheet, TCR2EN19,LF(SE) pinout, TCR2EN19,LF(SE) application, or TCR2EN19,LF(SE) equivalent, key selection criteria include its 1.9 V output accuracy (±1.0%), 35 µA quiescent current, 73 dB ripple rejection at 1 kHz, on/off control interface, and compatibility with 0.1 µF input / 1.0 µF ceramic output capacitors.
Technical Context
The TCR2EN19,LF(SE) implements a CMOS-based LDO architecture with integrated overcurrent protection and an active Auto-discharge circuit that rapidly discharges the output capacitor when disabled via the CONTROL pin. Its internal reference and error amplifier deliver stable regulation across −40°C to +85°C ambient temperature.
It operates with a minimum input voltage of 1.5 V and supports up to 5.5 V input, enabling use with single-cell Li-ion, Li-polymer, or multi-cell alkaline/NiMH sources. The CONTROL pin accepts 0–0.4 V for OFF and 1.0–5.5 V for ON states, with sub-1.0 µA standby current when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.9 V ±1.0% (guaranteed for VOUT ≥ 1.8 V) |
| Max Output Current | 200 mA - sufficient for powering microcontrollers, sensors, and RF transceivers in compact IoT nodes |
| Dropout Voltage | 160 mV (typ.) at 150 mA - enables operation with only 2.06 V input for full 1.9 V output |
| Quiescent Current | 35 µA (typ.) at zero load - extends battery life in always-on wearable sensors |
| Output Noise | 35 µVrms (10 Hz–100 kHz) - low enough for noise-sensitive analog front-ends and ADC references |
| Ripple Rejection | 73 dB (typ.) at 1 kHz - suppresses switching noise from upstream DC/DC converters |
| Load Transient Response | ±55 mV (IOUT step 1 mA ↔ 150 mA, COUT = 1.0 µF) - maintains stability during processor wake/sleep transitions |
Pinout & Package
TCR2EN19,LF(SE) is housed in the ultra-compact SDFN4/SDFN4E plastic mold package (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg typical weight), optimized for high-density PCB layouts in mobile and wearables. The exposed center pad is electrically connected to GND and must be soldered for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 1.5–5.5 V; requires 0.1 µF ceramic decoupling close to pin |
| VOUT | Regulated Output | Delivers stable 1.9 V; connects to 1.0 µF ceramic output capacitor and load |
| GND | Ground Reference | Common return for VIN, VOUT, CONTROL; center pad must be connected to GND plane |
| CONTROL | Enable/Disable Input | Active-high logic: 0–0.4 V = OFF (0.1 µA standby), 1.0–5.5 V = ON; internal pull-down ensures default OFF |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Small Footprint | SDFN4/SDFN4E (0.8 mm × 0.8 mm) enables placement under BGA packages or in <10 mm² wearable PCB areas |
| Auto-Discharge Function | Internally discharges VOUT to GND within microseconds when CONTROL = LOW - prevents residual voltage from interfering with system reset sequencing |
| Ceramic Capacitor Compatibility | Stable with 0.1 µF input and 1.0 µF output ceramics (ESR < 10 Ω) - eliminates need for larger, less reliable tantalum or aluminum electrolytics |
| Low Dropout + Low Noise | 160 mV dropout and 35 µVrms noise coexist without trade-off - supports both efficiency-critical and signal-integrity-critical subsystems |
| Overcurrent Protection | Current-limiting activates at ~250 mA (not shutdown) - sustains regulated output during brief overload while preventing thermal runaway |
Applications
| Smart Wearable Sensors | Bluetooth LE Audio Earbuds |
|---|---|
Use Scenario: Powering MEMS accelerometers and environmental sensors in wrist-worn health monitors with 30-day battery life. IC Role / Device Role / Timing Role: Primary 1.9 V LDO supplying sensor analog front-end and digital interface logic. Use Value: 35 µA quiescent current minimizes no-load drain; ±1.0% output accuracy ensures consistent ADC reference scaling across temperature. | Use Scenario: Regulating power to Bluetooth 5.3 audio SoC and DAC in true wireless stereo earbuds with 5.5 mm × 5.5 mm PCB area budget. IC Role / Device Role / Timing Role: Dedicated low-noise 1.9 V rail for audio codec and RF receiver blocks. Use Value: 35 µVrms noise prevents audible hiss; ±55 mV load transient response avoids audio clipping during packet bursts. |
| IoT Edge Node Microcontrollers | Portable Medical Pulse Oximeters |
Use Scenario: Supplying ARM Cortex-M0+ MCU core and BLE radio in battery-powered environmental sensor gateways. IC Role / Device Role / Timing Role: Main system LDO with controlled enable/disable synchronized to sleep/wake cycles. Use Value: CONTROL pin enables precise power gating; 160 mV dropout allows operation down to 2.06 V input - extending usable battery range by >12% vs. legacy LDOs. | Use Scenario: Providing stable 1.9 V bias to red/IR LED drivers and photodiode amplifier in fingertip pulse oximeters. IC Role / Device Role / Timing Role: Precision analog supply isolating LED current modulation from digital noise. Use Value: 73 dB ripple rejection suppresses switching noise from adjacent DC/DC converters; Auto-discharge ensures clean LED turn-off between measurement pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B192MR-G | Same 1.9 V output, SOT-25 package (2.9 mm × 2.8 mm); 120 mV dropout at 100 mA; 25 µVrms noise; no Auto-discharge | Larger footprint; lacks active discharge - requires external MOSFET for fast VOUT decay | Select when board area permits larger package and Auto-discharge is not required for system reset timing. |
| Rohm BD3572EFJ-ME2 | 1.9 V output, HTSOP-J8 package (4.9 mm × 6.0 mm); 250 mV dropout at 200 mA; 45 µVrms noise; includes thermal shutdown | Significantly larger size; higher dropout limits minimum input voltage to 2.15 V; adds thermal protection | Choose for higher-power applications where thermal robustness outweighs size constraints and 160 mV dropout is not critical. |
Compared with XC6219B192MR-G and BD3572EFJ-ME2, the TCR2EN19,LF(SE) delivers the smallest footprint, lowest dropout, and unique Auto-discharge - making it optimal for ultra-compact, battery-sensitive designs requiring precise power sequencing and minimal bill-of-materials.
Availability
TCR2EN19,LF(SE) is available at Aetrix Electronics and suitable for smart wearables, Bluetooth audio devices, IoT edge nodes, and portable medical instruments requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for TCR2EN19,LF(SE) 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 over 50 years of analog IC heritage.
The TCR2EN series targets ultra-portable electronics requiring sub-1-mm² power management - engineered specifically for battery-operated devices where size, quiescent current, and transient performance directly impact user experience and runtime.
FAQ
What is the guaranteed output voltage tolerance for TCR2EN19,LF(SE) across temperature and load?
The TCR2EN19,LF(SE) guarantees ±1.0% output voltage accuracy for 1.8 V ≤ VOUT, verified at IOUT = 50 mA and Tj = 25°C. This tolerance holds across −40°C to +85°C operating temperature and 1 mA to 150 mA load range per datasheet Electrical Characteristics table, with typical drift of 75 ppm/°C ensuring stability in thermally varying environments like wearable enclosures.
Does TCR2EN19,LF(SE) require external components for stable operation?
Yes - TCR2EN19,LF(SE) requires a 0.1 µF ceramic capacitor on VIN and a 1.0 µF ceramic capacitor on VOUT, both placed as close as possible to their respective pins. The device is optimized for ceramic capacitors with ESR < 10 Ω; no additional compensation network or feedback resistors are needed due to its internally compensated CMOS LDO architecture.
How does the Auto-discharge function operate in TCR2EN19,LF(SE)?
When the CONTROL pin is driven LOW (≤0.4 V), the TCR2EN19,LF(SE) disables regulation and activates an internal discharge switch between VOUT and GND. This rapidly pulls the output voltage to near-zero (within microseconds), eliminating residual charge that could interfere with downstream logic reset timing or cause unintended wake-up in ultra-low-power systems.
What is the maximum allowable input voltage for TCR2EN19,LF(SE)?
The absolute maximum input voltage for TCR2EN19,LF(SE) is 6.0 V, but the recommended operating range is 1.5 V to 5.5 V per the Electrical Characteristics table. Operating above 5.5 V risks exceeding power dissipation limits (300 mW rating on FR4 board), especially at high ambient temperatures or full 200 mA load - design margins should keep VIN ≤ VOUT + 1.0 V for thermal safety.
Can TCR2EN19,LF(SE) be used with lithium coin cell batteries?
Yes - TCR2EN19,LF(SE) supports input voltages as low as 1.5 V, making it compatible with CR2032 (2.0–3.0 V) and BR2032 (2.8–3.0 V) coin cells. Its 160 mV dropout at 150 mA allows delivering full 1.9 V output until the cell depletes to ~2.06 V, maximizing usable capacity. Quiescent current of 35 µA further extends shelf life in storage-mode applications.
TCR2EN19,LF(SE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- 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):
- 1.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.29V @ 300mA, 0.3V @ 300mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- 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)
TCR2EN19,LF(SE FAQ
1.How can I place an order for TCR2EN19,LF(SE through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EN19,LF(SE 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 TCR2EN19,LF(SE reliable?
The price and inventory of TCR2EN19,LF(SE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR2EN19,LF(SE is usually 5 days.
3.What payment methods are accepted for TCR2EN19,LF(SE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EN19,LF(SE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EN19,LF(SE?
TCR2EN19,LF(SE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EN19,LF(SE 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 TCR2EN19,LF(SE?
For technical support, including TCR2EN19,LF(SE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EN19,LF(SE requirements.
6.How does Aetrix verify that TCR2EN19,LF(SE is sourced from the original manufacturer or authorized distributors?
All TCR2EN19,LF(SE 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 TCR2EN19,LF(SE meets industry standards.
7.What is the process for return or replacement of TCR2EN19,LF(SE?
All TCR2EN19,LF(SE units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EN19,LF(SE, 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 TCR2EN19,LF(SE part is unused and in its original packaging.
Return procedure for TCR2EN19,LF(SE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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