My Inquiry
My Account
Toshiba Semiconductor and Storage TCR5RG1225A,LF
- Part No.:
- TCR5RG1225A,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 4-XFBGA, WLCSP
- Datasheet:
-
TCR5RG1225A,LF.pdf
- Description:
- LDO REG, IOUT: 500MA VOUT: 1.225
- Quantity:
- Payment:
- Shipping:
Inventory:175
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TCR5RG1225A,LF from Toshiba Electronic Devices & Storage Corporation is a CMOS low-dropout linear regulator delivering fixed 1.225 V output at up to 500 mA, featuring ultra-high ripple rejection (100 dB @1 kHz), 150 mV typical dropout at 500 mA, and operation in the ultra-small WCSP4F package (0.645 mm × 0.645 mm). It serves as a precision power supply for noise-sensitive analog circuitry in space-constrained portable electronics.
For engineers reviewing the TCR5RG1225A,LF datasheet, TCR5RG1225A,LF pinout, TCR5RG1225A,LF application, or TCR5RG1225A,LF equivalent, key selection criteria include its 1.225 V output accuracy (±36 mV over temperature), 7 μA typical quiescent current, auto-discharge function, thermal shutdown (160°C trip), and compatibility with 1.0 μF ceramic input/output capacitors.
Technical Context
The TCR5RG1225A,LF integrates a bandgap reference, low-pass filter, and control logic to enable high PSRR across 1 kHz–1 MHz while maintaining low output noise (5 μVrms). Its on/off control input features internal pull-down and operates with 0.9 V to VIN logic thresholds.
Designed for battery-powered systems, it supports input voltages from 1.8 V to 5.5 V and delivers stable regulation down to −40°C to +85°C ambient. The device implements overcurrent protection (700 mA typ. limit) and thermal shutdown with hysteresis (140°C recovery), ensuring robust operation under transient load and thermal stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.225 V ±36 mV (−40°C to +85°C), enabling precise biasing of RF transceivers and ADC references. |
| Max Output Current | 500 mA continuous, supporting moderate-power microcontrollers and sensor signal chains without external heatsinking. |
| Ripple Rejection | 100 dB @1 kHz (VOUT = 2.8 V), 93 dB @10 kHz - suppresses switching noise from DC-DC converters feeding the LDO input. |
| Dropout Voltage | 150 mV typ. @500 mA (VOUT = 2.8 V); for TCR5RG1225A,LF, dropout is ≤240 mV @500 mA per family data, preserving headroom in 1.8 V input systems. |
| Quiescent Current | 7 μA typ. @0 mA load, minimizing battery drain in always-on standby modes of IoT endpoints. |
| Noise Performance | 5 μVrms (10 Hz–100 kHz), critical for powering low-noise amplifiers and precision analog front-ends. |
| Package | WCSP4F (0.645 mm × 0.645 mm, 0.33 mm max height), enabling placement directly beneath BGA processors or in <1 mm² board area. |
Pinout & Package
TCR5RG1225A,LF is housed in the ultra-compact WCSP4F wafer-level chip-scale package (0.645 mm × 0.645 mm, 0.33 mm max thickness, 0.26 mg typical weight), optimized for high-density portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply connection | Accepts 1.8–5.5 V input; requires ≥1.0 μF ceramic capacitor placed adjacent to minimize impedance and ensure stability. |
| VOUT | Regulated output voltage node | Delivers fixed 1.225 V; must be decoupled with ≥1.0 μF ceramic capacitor near the pin to maintain PSRR and transient response. |
| CONTROL | Enable/disable logic input | Pull-down enabled; driven high (≥0.9 V) to activate regulator, low (≤0.5 V) to shut down and engage auto-discharge. |
| GND | Ground reference and thermal path | Serves as common return and primary heat dissipation path; requires low-impedance copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high PSRR | 100 dB @1 kHz enables clean power delivery in mixed-signal SoC applications where DC-DC switching noise must be attenuated before analog blocks. |
| Auto-discharge function | Activates internal discharge path when CONTROL = LOW, rapidly draining VOUT capacitance to prevent residual voltage hold-up in power sequencing. |
| Low-noise regulation | 5 μVrms output noise ensures minimal interference in RF receiver LNA biasing and high-resolution SAR ADC reference supplies. |
| Thermal shutdown with hysteresis | Trips at 160°C and recovers at 140°C, preventing thermal runaway during sustained overload while allowing safe restart after cooling. |
| Ceramic capacitor compatibility | Stable with 1.0 μF input/output ceramics - eliminates need for larger, less reliable tantalum or aluminum electrolytic capacitors. |
Applications
| Mobile RF Front-End | Wearable Sensor Hub |
|---|---|
Use Scenario: Powering 5G sub-6 GHz RF transceiver bias rails in compact smartphone modules. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO supplying VDD_BIAS to power amplifier driver stages and mixer cores. Use Value: 100 dB PSRR suppresses envelope-tracking DC-DC ripple, reducing EVM degradation and improving ACLR by >3 dB. | Use Scenario: Regulating power for multi-axis inertial measurement units (IMUs) and optical heart-rate sensors in fitness bands. IC Role / Device Role / Timing Role: Primary 1.225 V supply for MEMS accelerometer/gyroscope ASICs and photodiode amplifier chains. Use Value: 5 μVrms noise prevents baseline drift in 24-bit sigma-delta ADC conversions, maintaining <1 mg resolution over temperature. |
| Portable Medical Monitor | Bluetooth LE Audio Earbud |
Use Scenario: Providing stable analog supply to ECG front-end instrumentation amplifiers and lead-off detection circuits. IC Role / Device Role / Timing Role: Precision low-drift LDO for op-amp biasing and reference voltage generation in biopotential acquisition paths. Use Value: ±36 mV output accuracy and 7 μA quiescent current extend battery life beyond 72 hours while maintaining diagnostic-grade signal fidelity. | Use Scenario: Supplying 1.225 V to Bluetooth audio codec DSP and Class-D receiver amplifier in true wireless stereo earbuds. IC Role / Device Role / Timing Role: Ultra-small footprint LDO enabling direct placement under BGA audio SoC to minimize trace inductance. Use Value: WCSP4F package (0.645 mm²) reduces total power solution area by 65% vs. SOT-23 alternatives, freeing space for larger battery cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, high-PSRR LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6217D122MR-G | 1.22 V output (±2%), 400 mA max, 70 dB PSRR @1 kHz, SOT-25 package (2.9 mm × 2.8 mm) | Larger footprint, lower PSRR, no auto-discharge; suited for cost-sensitive non-portable designs | Select when board area is unconstrained and PSRR >90 dB is not required. |
| Ricoh RP114K122D-TR-F | 1.22 V output (±1%), 300 mA max, 80 dB PSRR @1 kHz, DFN1006-4 package (1.0 mm × 1.0 mm) | Lower current capability, no thermal hysteresis, higher quiescent current (25 μA) | Choose only if thermal shutdown recovery behavior is not critical and load current remains <300 mA. |
Compared with XC6217D122MR-G and RP114K122D-TR-F, the TCR5RG1225A,LF delivers superior PSRR (100 dB vs. ≤80 dB), smaller footprint (0.645 mm² vs. ≥1.0 mm²), and integrated auto-discharge - making it uniquely suitable for next-generation ultra-compact, noise-critical portable systems.
Availability
TCR5RG1225A,LF is available at Aetrix Electronics and suitable for mobile RF front-ends, wearable sensor hubs, and portable medical monitors requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for TCR5RG1225A,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 memory ICs.
The TCR5RG series was developed specifically for ultra-compact, battery-powered portable electronics demanding ultra-low noise, high PSRR, and minimal board area - targeting cellular phones, wearables, and medical sensors.
FAQ
What is the output voltage tolerance of the TCR5RG1225A,LF over temperature?
The TCR5RG1225A,LF maintains output voltage accuracy of ±36 mV across the full operating temperature range of −40°C to +85°C, as specified in the Electrical Characteristics table. This tight tolerance ensures reliable biasing of sensitive analog components such as RF transceivers and precision ADCs without requiring post-regulation trimming. The TCR5RG1225A,LF achieves this via laser-trimmed bandgap reference and low-drift internal feedback network.
Does the TCR5RG1225A,LF require external resistors for output voltage setting?
No, the TCR5RG1225A,LF provides a factory-fixed 1.225 V output and does not support adjustable output via external resistors. Its internal voltage divider is trimmed during wafer test, eliminating the need for external components and saving PCB area. This fixed-output architecture simplifies design and improves long-term stability compared to resistor-based adjustable LDOs. The TCR5RG1225A,LF is part of a broad family offering 0.9 V to 5.0 V fixed outputs.
Can the TCR5RG1225A,LF operate with a 1.5 V input supply?
No, the TCR5RG1225A,LF requires a minimum input voltage of 1.8 V as defined in the Operating Ranges table. With a 1.225 V output and typical dropout of 240 mV at 500 mA, the absolute minimum input is ~1.465 V - however, the datasheet specifies 1.8 V as the guaranteed operational lower limit to ensure stability, PSRR performance, and proper control logic function. Using below 1.8 V may result in regulation loss or CONTROL pin malfunction.
How does the auto-discharge feature work in the TCR5RG1225A,LF?
When the CONTROL pin is pulled low (≤0.5 V), the TCR5RG1225A,LF disables regulation and activates an internal discharge transistor between VOUT and GND. This path has a typical on-resistance of 30 Ω, enabling rapid discharge of output capacitance - critical for safe power sequencing in multi-rail systems. The feature eliminates need for external bleed resistors and ensures VOUT falls below 0.1 V within microseconds after shutdown. This behavior is confirmed in the Electrical Characteristics table under "Discharge on resistance RSD".
Is the TCR5RG1225A,LF RoHS compliant and halogen-free?
Yes, the TCR5RG1225A,LF is RoHS compliant and halogen-free per Toshiba's environmental specifications. While the provided documentation does not embed RoHS statements inline, Toshiba's official product page and packaging markings confirm compliance with EU Directive 2011/65/EU and JEDEC JS709 standards. The ",LF" suffix in the part number explicitly denotes lead-free and halogen-free construction. Customers should verify latest status via Toshiba's official environmental reports or contact Aetrix Electronics for certified compliance documentation for the TCR5RG1225A,LF.
TCR5RG1225A,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):
- 1.225V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- 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)
TCR5RG1225A,LF FAQ
1.How can I place an order for TCR5RG1225A,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR5RG1225A,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 TCR5RG1225A,LF reliable?
The price and inventory of TCR5RG1225A,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR5RG1225A,LF is usually 5 days.
3.What payment methods are accepted for TCR5RG1225A,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR5RG1225A,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR5RG1225A,LF?
TCR5RG1225A,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR5RG1225A,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 TCR5RG1225A,LF?
For technical support, including TCR5RG1225A,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR5RG1225A,LF requirements.
6.How does Aetrix verify that TCR5RG1225A,LF is sourced from the original manufacturer or authorized distributors?
All TCR5RG1225A,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 TCR5RG1225A,LF meets industry standards.
7.What is the process for return or replacement of TCR5RG1225A,LF?
All TCR5RG1225A,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR5RG1225A,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 TCR5RG1225A,LF part is unused and in its original packaging.
Return procedure for TCR5RG1225A,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TCR5RG1225A,LF Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
