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Toshiba Semiconductor and Storage TCR5RG28A,LF
- Part No.:
- TCR5RG28A,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
TCR5RG28A,LF.pdf
- Description:
- LDO REG, IOUT: 500MA VOUT: 2.8V
- Quantity:
- Payment:
- Shipping:
Inventory:1,498
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Product details
Overview
TCR5RG28A,LF from Toshiba Electronic Devices & Storage Corporation is a CMOS low-dropout linear regulator delivering fixed 2.8 V output at up to 500 mA, featuring ultra-high ripple rejection (100 dB @1 kHz), 150 mV typical dropout voltage, and operation in the ultra-small WCSP4F package (0.645 mm × 0.645 mm). It serves as a precision power supply for noise-sensitive RF and digital baseband circuits in compact portable electronics.
For engineers reviewing the TCR5RG28A,LF datasheet, TCR5RG28A,LF pinout, TCR5RG28A,LF application, or TCR5RG28A,LF equivalent, this page delivers verified electrical specifications, thermal shutdown and overcurrent protection behavior, ceramic capacitor compatibility (1.0 μF input/output), quiescent current (7 μA typ.), and load transient response (±40 mV) - all critical for battery-powered wearable and IoT device power rail design.
Technical Context
The TCR5RG28A,LF integrates a bandgap reference, low-pass filter for noise suppression, and control logic enabling ON/OFF functionality via a dedicated CONTROL pin with internal pull-down. Its architecture supports stable regulation across −40°C to +85°C with ±1.5% output voltage accuracy at 2.8 V.
Designed for high-density PCB layouts, it uses a WCSP4F package with four terminals (VIN, VOUT, CONTROL, GND) and relies on minimal external components: only two 1.0 μF ceramic capacitors are required for full stability and optimal ripple rejection performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±1.5% - ensures stable core voltage for 2.8 V–biased RF transceivers and microcontrollers. |
| Max Output Current | 500 mA - sufficient to power multi-core Bluetooth SoCs or PMIC subsystems without thermal derating under typical ambient conditions. |
| Ripple Rejection | 100 dB @1 kHz - suppresses switching noise from DC-DC converters feeding the LDO input, critical for ADC reference and PLL power domains. |
| Dropout Voltage | 150 mV typ. @500 mA - enables operation from 3.0 V input (e.g., single Li-ion cell) while maintaining regulated 2.8 V output. |
| Quiescent Current | 7 μA typ. @0 mA load - extends battery life in always-on sensor nodes and standby modes of portable devices. |
| Output Noise | 5 μVrms (10 Hz–100 kHz) - meets stringent noise requirements for analog front-ends and low-phase-noise clock buffers. |
| Operating Temp | −40°C to +85°C - qualified for industrial-grade portable equipment including medical wearables and ruggedized handhelds. |
Pinout & Package
TCR5RG28A,LF is housed in the ultra-compact WCSP4F wafer-level chip-scale package (0.645 mm × 0.645 mm, max height 0.33 mm, weight 0.26 mg), optimized for space-constrained mobile applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input Power Supply | Accepts 1.8–5.5 V input; requires ≥1.0 μF ceramic capacitor for stability and high-frequency noise filtering. |
| VOUT | Regulated Output | Delivers fixed 2.8 V; must be decoupled with ≥1.0 μF ceramic capacitor placed adjacent to the pin for transient response. |
| CONTROL | Enable/Shutdown Input | Active-high logic input; internal pull-down ensures default OFF state; 0.9–VIN threshold enables direct MCU GPIO control. |
| GND | Ground Reference | Common return path for VIN, VOUT, and CONTROL; low-inductance connection essential for noise immunity and thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-High Ripple Rejection | 100 dB @1 kHz enables clean power delivery to RF ICs even when co-supplied with noisy buck converters. |
| Auto-Discharge Function | Internal 30 Ω discharge path rapidly collapses VOUT when disabled - prevents residual voltage from interfering with system reset sequencing. |
| Thermal Shutdown Protection | Activates at 160°C junction temperature and releases at 140°C - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Ceramic Capacitor Compatibility | Stable with 1.0 μF input/output ceramics - eliminates need for larger, less reliable tantalum or aluminum electrolytic capacitors. |
| Low Dropout Architecture | 150 mV dropout at full 500 mA load allows efficient use of aging or partially discharged batteries in portable systems. |
Applications
| Smart Wearable Sensors | Bluetooth LE Audio Devices |
|---|---|
Use Scenario: Continuous biometric monitoring (ECG, SpO₂) in wrist-worn health trackers powered by coin-cell or thin-film batteries. IC Role / Device Role / Timing Role: Primary 2.8 V LDO supplying analog front-end and ultra-low-power MCU, replacing discrete regulators to minimize board area. Use Value: 7 μA quiescent current extends battery life beyond 7 days; 5 μVrms output noise preserves signal integrity in sub-μV physiological measurements. | Use Scenario: Dual-mode earbuds supporting Bluetooth 5.3 and LE Audio broadcast with integrated DAC and Class-D amplifier. IC Role / Device Role / Timing Role: Dedicated low-noise 2.8 V rail for audio codec and RF section, isolated from noisy digital supply domains. Use Value: 100 dB ripple rejection suppresses switching artifacts from shared 3.3 V buck converter, eliminating audible hiss in high-SNR playback. |
| Industrial Handheld Scanners | Compact Cellular Modems |
Use Scenario: Rugged barcode scanners operating in warehouses with wide ambient temperature swings (−20°C to +60°C). IC Role / Device Role / Timing Role: Main power regulator for image sensor, laser driver, and ARM Cortex-M4 host processor. Use Value: −40°C to +85°C operating range ensures reliability across environments; 500 mA output supports burst-mode imaging without brownout. | Use Scenario: NB-IoT or LTE-M modules embedded in smart meters and asset trackers with strict size and power budgets. IC Role / Device Role / Timing Role: Secondary LDO generating clean 2.8 V for cellular baseband IC and SIM interface, fed from primary 3.8 V battery rail. Use Value: WCSP4F footprint saves >0.4 mm² vs. SOT-23 alternatives - critical for module-level miniaturization where every 0.1 mm² impacts certification margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R1172L281B-TR-FE | 2.8 V output, 500 mA, 75 dB RR @1 kHz, 250 mV dropout @500 mA, SOT-23-5 package | Lower ripple rejection and higher dropout limit usable headroom; larger footprint increases board area by 3.2 mm² | Preferred where cost sensitivity outweighs noise performance and board space constraints. |
| MCP1703T-2802E/MB | 2.8 V output, 250 mA, 70 dB RR @1 kHz, 600 mV dropout @250 mA, SOT-23 package | Halved current capability and degraded noise rejection restrict use to low-power peripherals only | Suitable for auxiliary rails in systems where main 2.8 V domain is handled by higher-capacity regulators. |
Compared with R1172L281B-TR-FE and MCP1703T-2802E/MB, the TCR5RG28A,LF provides superior noise suppression and tighter voltage regulation in a fraction of the area - making it the optimal choice for next-generation ultra-compact, battery-critical designs demanding both efficiency and signal purity.
Availability
TCR5RG28A,LF is available at Aetrix Electronics and suitable for smart wearables, Bluetooth audio devices, industrial handheld scanners, and compact cellular modems requiring stable component supply with guaranteed long-term availability.
Supply support for TCR5RG28A,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 and manufactures high-reliability semiconductor solutions for consumer, industrial, and automotive markets, with emphasis on energy efficiency and miniaturization.
The TCR5RG series was developed specifically for portable electronics requiring ultra-small footprint, ultra-low quiescent current, and high power-supply rejection - targeting space- and battery-constrained applications such as wearables, hearing aids, and IoT edge nodes.
FAQ
What is the maximum input voltage rating for the TCR5RG28A,LF?
The TCR5RG28A,LF has an absolute maximum input voltage rating of 6.0 V. However, its recommended operating input voltage range is 1.8 V to 5.5 V. Exceeding 5.5 V may trigger overvoltage stress conditions not covered by warranty, and operation above 6.0 V risks permanent damage. For reliable 2.8 V output, VIN should be maintained at least 150 mV above VOUT (i.e., ≥2.95 V) under full 500 mA load per the dropout specification.
Does the TCR5RG28A,LF require external components to operate stably?
Yes - the TCR5RG28A,LF requires two 1.0 μF ceramic capacitors: one between VIN and GND, and another between VOUT and GND. These are mandatory for stability, transient response, and achieving the specified 100 dB ripple rejection. The datasheet explicitly validates performance with these values and warns against using smaller capacitances or non-ceramic types due to ESR-related instability risks.
How does the CONTROL pin function on the TCR5RG28A,LF?
The CONTROL pin on the TCR5RG28A,LF is an active-high enable input with internal pull-down. When pulled to ≥0.9 V (relative to GND), the regulator turns ON; when held ≤0.5 V, it enters shutdown mode with only 0.08 μA standby current. The pin's internal 0.08–0.2 μA pull-down ensures safe default-OFF behavior during power-up or MCU initialization, eliminating need for external resistors in most designs.
Can the TCR5RG28A,LF be used with input voltages below 2.0 V?
Yes - the TCR5RG28A,LF operates down to 1.8 V input, as confirmed in the Operating Ranges table. At VIN = 1.8 V and VOUT = 2.8 V, the device cannot regulate (since VIN < VOUT), but the datasheet specifies minimum VIN = 1.8 V *only when VOUT ≤ 1.8 V*. For the TCR5RG28A,LF (2.8 V output), the practical minimum VIN is VOUT + VDO = 2.8 V + 0.15 V = 2.95 V under 500 mA load. Below that, output voltage drops proportionally.
What thermal protection mechanisms does the TCR5RG28A,LF include?
The TCR5RG28A,LF incorporates thermal shutdown with a rising-threshold of 160°C and falling-threshold of 140°C, providing hysteresis to prevent oscillation near trip point. It also features overcurrent protection limiting output to ~700 mA (typ.) before foldback. Neither function is intended for continuous operation - they are safety backups. Sustained operation above 125°C junction temperature requires PCB-level thermal design (e.g., copper pour, vias) per the 40 mm × 40 mm FR4 reference board layout.
TCR5RG28A,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TCR5RG
- Package/Case:
- 4-XFBGA, WLCSP
- 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.21V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 13 µA
- Current - Supply (Max):
- -
- PSRR:
- 100dB ~ 59dB (1kHz ~ 1MHz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-WCSPF (0.65x0.65)
TCR5RG28A,LF FAQ
1.How can I place an order for TCR5RG28A,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR5RG28A,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 TCR5RG28A,LF reliable?
The price and inventory of TCR5RG28A,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR5RG28A,LF is usually 5 days.
3.What payment methods are accepted for TCR5RG28A,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR5RG28A,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR5RG28A,LF?
TCR5RG28A,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR5RG28A,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 TCR5RG28A,LF?
For technical support, including TCR5RG28A,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR5RG28A,LF requirements.
6.How does Aetrix verify that TCR5RG28A,LF is sourced from the original manufacturer or authorized distributors?
All TCR5RG28A,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 TCR5RG28A,LF meets industry standards.
7.What is the process for return or replacement of TCR5RG28A,LF?
All TCR5RG28A,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR5RG28A,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 TCR5RG28A,LF part is unused and in its original packaging.
Return procedure for TCR5RG28A,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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