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Toshiba Semiconductor and Storage TCR2EN32,LF(SE
- Part No.:
- TCR2EN32,LF(SE
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
TCR2EN32,LF(SE.pdf
- Description:
- LDO REG VOUT=3.2V IOUT=200MA
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
TCR2EN32,LF(SE) from Toshiba Electronic Devices & Storage Corporation is a fixed-output 3.2 V, 200 mA CMOS low dropout regulator in an ultra-small SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm), featuring 130 mV typical dropout at 3.2 V/150 mA, ±1.0% output accuracy, and 35 µVrms output noise - designed for power management in space-constrained portable electronics including cellular phone baseband ICs and wearable sensor modules.
For engineers reviewing the TCR2EN32,LF(SE) datasheet, TCR2EN32,LF(SE) pinout, TCR2EN32,LF(SE) application, or TCR2EN32,LF(SE) equivalent, key selection criteria include its 35 µVrms noise performance at 3.2 V output, fast ±55 mV load transient response with 1.0 µF ceramic output capacitor, Auto-discharge function, and compatibility with 0.1 µF input capacitance - all critical for battery-powered RF and analog signal chain stability.
Technical Context
The TCR2EN32,LF(SE) employs a CMOS-based LDO architecture with integrated on/off control input and internal overcurrent protection. Its voltage reference and error amplifier are optimized for low quiescent current (35 µA typ.) and high ripple rejection (73 dB typ. at 1 kHz).
It operates across −40°C to +85°C ambient temperature, supports input voltages from 1.5 V to 5.5 V, and delivers stable 3.2 V output with ±1.0% accuracy for VOUT ≥ 1.8 V. The Auto-discharge function actively discharges the output capacitor when disabled via CONTROL pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.2 V ±1.0% - ensures precise biasing for 3.3 V-tolerant logic and analog circuits without external feedback. |
| Max Output Current | 200 mA - sufficient to power multiple low-power microcontrollers, sensors, or RF front-end ICs from a single regulator. |
| Dropout Voltage | 130 mV (typ.) at 3.2 V/150 mA - enables operation down to VIN = 3.33 V, extending battery runtime in single-cell Li-ion/Li-poly systems. |
| Quiescent Current | 35 µA (typ.) at zero load - minimizes standby power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| Output Noise | 35 µVrms (typ., 10 Hz–100 kHz) - low enough to avoid degradation of ADC SNR or PLL phase noise in sensitive mixed-signal applications. |
| Ripple Rejection | 73 dB (typ., 1 kHz) - suppresses switching noise from upstream DC-DC converters, enabling clean supply for RF transceivers. |
| Load Transient Response | ±55 mV (typ., 1 mA ↔ 150 mA step, COUT = 1.0 µF) - maintains system stability during burst-mode processor or radio activity without external compensation. |
Pinout & Package
TCR2EN32,LF(SE) uses the ultra-compact SDFN4/SDFN4E package (0.8 mm × 0.8 mm × 0.38 mm, 0.6 mg weight), with exposed thermal pad (center electrode) recommended to be connected to GND for optimal thermal performance and EMI suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input voltage supply | Accepts 1.5–5.5 V input; requires 0.1 µF ceramic decoupling close to pin to ensure stability and transient response. |
| VOUT | Regulated output | Delivers fixed 3.2 V; connects to 1.0 µF ceramic output capacitor - ESR < 10 Ω recommended per Toshiba guidance. |
| GND | Ground reference | Common return for input/output paths and control logic; center thermal pad must be soldered to GND plane for thermal dissipation. |
| CONTROL | Enable/disable input | Logic-high (≥1.0 V) enables regulation; logic-low (≤0.4 V) disables output and activates Auto-discharge; internal pull-down to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SDFN4/SDFN4E package | 0.8 mm × 0.8 mm footprint - enables placement in tight spaces such as camera modules or hearable PCBs where board area is ≤3 mm². |
| Auto-discharge function | Actively discharges VOUT when CONTROL = LOW - prevents residual voltage from interfering with downstream logic reset sequencing or I/O leakage. |
| Ceramic capacitor compatibility | Stable with 0.1 µF input / 1.0 µF output ceramics - eliminates need for larger, less reliable tantalum or aluminum electrolytic capacitors. |
| Low-noise, high-PSRR regulation | 35 µVrms noise + 73 dB ripple rejection - preserves signal integrity in audio codecs, precision ADCs, and low-phase-noise clock buffers. |
| Overcurrent protection | Current-limiting circuitry limits output to safe levels during short-circuit or overload - protects both regulator and load without latch-up. |
Applications
| Smartphone Baseband Power | Wearable Sensor Hub |
|---|---|
Use Scenario: Supplying 3.2 V to LTE/5G baseband processors and RF transceivers during active data transmission. IC Role / Device Role / Timing Role: Primary LDO delivering clean, low-noise power to analog/RF sections while rejecting switching noise from PMIC DC-DC stages. Use Value: 73 dB ripple rejection and ±55 mV load transient response prevent bit errors and maintain EVM compliance under dynamic RF load conditions. |
Use Scenario: Powering multi-axis IMU, optical heart-rate sensor, and BLE SoC in compact earbuds or fitness bands. IC Role / Device Role / Timing Role: Low-quiescent-current (35 µA) LDO enabling >7-day battery life in always-on sensing mode with fast wake-up capability. Use Value: Auto-discharge ensures rapid, controlled power-down of sensor interface when BLE enters sleep - eliminating floating node issues. |
| Industrial IoT Edge Node | Medical Patch Monitor |
Use Scenario: Regulating 3.2 V for ultra-low-power microcontroller and LoRaWAN transceiver in battery-operated environmental sensor nodes. IC Role / Device Role / Timing Role: High-accuracy (±1.0%) LDO maintaining consistent ADC reference and RF oscillator bias across temperature and battery discharge. Use Value: 130 mV dropout extends usable battery range by enabling operation until cell voltage drops to 3.33 V - critical for long-field deployments. |
Use Scenario: Providing stable 3.2 V to ECG front-end amplifier and Bluetooth LE radio in disposable patient-worn cardiac monitors. IC Role / Device Role / Timing Role: Low-noise (35 µVrms) regulator isolating analog signal path from digital switching noise to preserve µV-level biopotential fidelity. Use Value: Ceramic capacitor compatibility allows use of small, high-reliability MLCCs - meeting stringent medical device lifetime and safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R1192N321B-TR-FE | 3.2 V fixed, 200 mA, 180 mV dropout (typ.), 45 µVrms noise, SOT-23-5 package (2.9 mm × 2.8 mm) | Larger footprint and higher noise limit suitability for RF/analog-sensitive designs; lacks Auto-discharge. | Choose R1192N321B-TR-FE only if board layout permits SOT-23-5 and Auto-discharge is unnecessary. |
| MCP1703T-3202E/MB | 3.2 V fixed, 250 mA, 600 mV dropout (typ. at 250 mA), 30 µVrms noise, SOT-23-5 package | Higher dropout reduces usable battery range; no Auto-discharge; lower max current margin for burst loads. | Select MCP1703T-3202E/MB only when higher output current headroom is prioritized over efficiency and compactness. |
Compared with R1192N321B-TR-FE and MCP1703T-3202E/MB, TCR2EN32,LF(SE) offers the smallest footprint, lowest dropout, and unique Auto-discharge - making it optimal for miniaturized, battery-sensitive, and fast-wake-up applications where board area and power sequencing matter most.
Availability
TCR2EN32,LF(SE) is available at Aetrix Electronics and suitable for smartphone baseband power, wearable sensor hubs, industrial IoT edge nodes, medical patch monitors, and portable instrumentation requiring stable component supply with guaranteed long-term sourcing.
Supply support for TCR2EN32,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 and manufactures high-reliability semiconductor solutions for consumer, industrial, and automotive markets, with emphasis on energy efficiency and miniaturization.
The TCR2EN series belongs to Toshiba's CMOS linear regulator product line, engineered specifically for ultra-compact, low-noise, low-quiescent-power applications in portable and battery-operated electronics.
FAQ
What is the maximum input voltage rating for TCR2EN32,LF(SE)?
The absolute maximum input voltage for TCR2EN32,LF(SE) is 6.0 V. However, the recommended operating input voltage range is 1.5 V to 5.5 V under normal conditions. Exceeding 5.5 V may trigger overvoltage stress even if within absolute maximum ratings, so design margins should keep VIN ≤ 5.5 V for reliability. TCR2EN32,LF(SE) maintains regulation stability across this full range when paired with 0.1 µF input capacitance.
Does TCR2EN32,LF(SE) require an external resistor network for output voltage setting?
No, TCR2EN32,LF(SE) is a fixed-output LDO with factory-trimmed 3.2 V regulation - no external resistors are needed or supported. Its output voltage accuracy is ±1.0% for VOUT ≥ 1.8 V, verified across temperature and load. This simplifies layout and eliminates resistor tolerance drift, making TCR2EN32,LF(SE) ideal for high-volume, cost-sensitive portable designs where BOM count and calibration overhead must be minimized.
How does the Auto-discharge function operate in TCR2EN32,LF(SE)?
When the CONTROL pin is driven LOW (≤0.4 V), TCR2EN32,LF(SE) disables the pass transistor and activates an internal discharge switch between VOUT and GND. This rapidly drains residual charge from the output capacitor, bringing VOUT to near-zero volts within microseconds. This behavior prevents unintended wake-up or latch-up in downstream logic and is confirmed in Toshiba's application note for TCR2EN32,LF(SE) under load transient testing.
Can TCR2EN32,LF(SE) be used with a 0.22 µF output capacitor instead of the recommended 1.0 µF?
No - Toshiba specifies 1.0 µF ceramic output capacitance (ESR < 10 Ω) as mandatory for stability and transient performance in TCR2EN32,LF(SE). Using 0.22 µF violates the minimum COUT requirement and risks oscillation, overshoot, or failure to meet the ±55 mV load transient spec. TCR2EN32,LF(SE)'s internal compensation is optimized exclusively for ≥1.0 µF, and validation data confirms instability below this value.
Is the center thermal pad on the SDFN4/SDFN4E package of TCR2EN32,LF(SE) electrically connected?
Yes - the center electrode (thermal pad) of the SDFN4/SDFN4E package for TCR2EN32,LF(SE) is internally connected to GND. Toshiba's datasheet explicitly states "Center electrode should be connected to GND or Open", and thermal simulation data shows ≥20°C junction-to-board improvement when soldered to a GND plane. Leaving it unconnected degrades thermal resistance and risks exceeding 150°C junction temperature under 200 mA load at 85°C ambient.
TCR2EN32,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):
- 3.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.18V @ 150mA
- 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)
TCR2EN32,LF(SE FAQ
1.How can I place an order for TCR2EN32,LF(SE through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR2EN32,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 TCR2EN32,LF(SE reliable?
The price and inventory of TCR2EN32,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 TCR2EN32,LF(SE is usually 5 days.
3.What payment methods are accepted for TCR2EN32,LF(SE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR2EN32,LF(SE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR2EN32,LF(SE?
TCR2EN32,LF(SE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR2EN32,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 TCR2EN32,LF(SE?
For technical support, including TCR2EN32,LF(SE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR2EN32,LF(SE requirements.
6.How does Aetrix verify that TCR2EN32,LF(SE is sourced from the original manufacturer or authorized distributors?
All TCR2EN32,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 TCR2EN32,LF(SE meets industry standards.
7.What is the process for return or replacement of TCR2EN32,LF(SE?
All TCR2EN32,LF(SE units undergo pre-shipment inspection (PSI). If there is an issue with TCR2EN32,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 TCR2EN32,LF(SE part is unused and in its original packaging.
Return procedure for TCR2EN32,LF(SE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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