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Toshiba Semiconductor and Storage TCR15AG18,LF
- Part No.:
- TCR15AG18,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package:
- 6-XFBGA, WLCSP
- Datasheet:
-
TCR15AG18,LF.pdf
- Description:
- IC REG LINEAR 1.8V 1.5A 6WCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,486
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Product details
Overview
TCR15AG18,LF from Toshiba Electronic Devices & Storage Corporation is a 1.5 A CMOS ultra-low-dropout linear regulator with fixed 1.8 V output, on/off control input, and ultra-high ripple rejection (95 dB @ 1 kHz). It features 120 mV typical dropout at 1.5 A, fast load transient response (±100/115 mV), and operates from −40°C to +85°C. Designed for high-density portable power rails such as cellular phone baseband processors.
For engineers reviewing the TCR15AG18,LF datasheet, TCR15AG18,LF pinout, TCR15AG18,LF application, or TCR15AG18,LF equivalent, this page delivers verified specifications, WCSP6F package layout, thermal shutdown behavior, bias voltage dependency (VBIAS ≥ VOUT + 1.4 V), and design-critical capacitor requirements (≥4.7 μF CIN/COUT, ≥1.0 μF CBIAS).
Technical Context
The TCR15AG18,LF uses a CMOS-based LDO architecture with separate VBIAS supply for gate drive, enabling stable regulation even when VIN approaches VOUT. Its control logic includes under-voltage lockout (VUVLO = 0.5–0.65 V), auto-discharge via 10 Ω internal switch, and pull-down on CONTROL pin to GND.
It implements fast transient compensation through internal error amplifier tuning and supports ceramic capacitors only - requiring COUT ≥ 4.7 μF with ESR < 1.0 Ω. The SENSE pin (connected to VOUT in fixed-output configuration) enables remote-sense capability for improved load regulation accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.0% (typ. ±18 mV below 1.8 V), ensuring precise core voltage for 1.8 V I/O domains. |
| Max Output Current | 1.5 A continuous - sufficient for application processors or RF transceivers with burst-mode loads. |
| Dropout Voltage | 120 mV typ. @ 1.5 A, 3.3 V VBIAS - enables operation from 1.92 V input, critical for battery-powered systems. |
| Ripple Rejection | 95 dB @ 1 kHz (VIN ripple) - suppresses switching noise from upstream DC-DC converters feeding the LDO. |
| Quiescent Current | 25–40 μA @ IOUT = 0 mA - minimizes standby power loss in always-on subsystems. |
| Operating Temp | −40°C to +85°C junction - validated for consumer and industrial portable equipment environments. |
| Package | WCSP6F (0.8 × 1.2 mm, 0.33 mm max height) - ultra-small footprint for space-constrained PCB layouts. |
Pinout & Package
TCR15AG18,LF is housed in the ultra-compact WCSP6F wafer-level chip-scale package (0.8 mm × 1.2 mm, 0.33 mm max thickness, 0.61 mg typical weight), optimized for high-density mobile PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | VOUT | Regulated 1.8 V output - must connect to load and ≥4.7 μF ceramic capacitor placed adjacent to pin. |
| 2 (A) | VIN | Main input supply (VOUT + VDO to VBIAS); requires ≥4.7 μF ceramic decoupling near pin. |
| 1 (B) | SENSE | Remote sense node - shorted to VOUT for fixed-output mode; enables voltage drop compensation at load. |
| 2 (B) | CONTROL | Active-high enable input (VCT = 1.0–5.5 V ON, 0–0.4 V OFF); internal 0.03 μA pull-down ensures default OFF state. |
| 1 (C) | GND | Analog ground reference - low-impedance connection required for stability and noise immunity. |
| 2 (C) | VBIAS | Bias supply input (≥ VOUT + 1.4 V, ≤ 5.5 V); powers internal gate driver - requires ≥1.0 μF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 120 mV typ. @ 1.5 A enables single-cell Li-ion (3.0–3.6 V) or dual-cell NiMH (2.4–2.8 V) input operation. |
| High PSRR | 95 dB @ 1 kHz suppresses ripple from noisy buck converters, reducing need for additional filtering stages. |
| Fast load transient | −100/+115 mV deviation @ 0.01 A ↔ 1.5 A step ensures stable core voltage during processor wake/sleep transitions. |
| Auto-discharge | 10 Ω internal discharge path pulls VOUT to GND within microseconds after CONTROL deactivation - prevents floating outputs. |
| Thermal & overcurrent protection | Integrated shutdown triggers at Tj = 150°C or current limit - protects device during overload or poor heatsinking. |
Applications
| Smartphone Application Processor Core Rail | Wireless Modem RF Front-End Bias |
|---|---|
|
Use Scenario: Powers ARM Cortex-A series CPU cores requiring tightly regulated 1.8 V at up to 1.5 A peak current during burst processing. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering clean, ripple-free voltage to sensitive digital logic blocks. Use Value: 95 dB PSRR and 120 mV dropout allow direct use of partially filtered DC-DC output, reducing BOM count and board area. |
Use Scenario: Supplies stable 1.8 V bias to PA drivers and LNA stages in LTE/5G modems where supply noise directly impacts EVM and ACLR. IC Role / Device Role / Timing Role: Low-noise analog supply rail generator with fast transient response to accommodate dynamic RF envelope variations. Use Value: Fast load step recovery (±100/115 mV) maintains signal integrity during transmit/receive switching without external compensation. |
| Wearable Sensor Hub Power | IoT Edge Node MCU I/O Interface |
|
Use Scenario: Powers multi-sensor fusion hubs (accelerometer, gyroscope, HRM) in compact wearables with strict size and thermal constraints. IC Role / Device Role / Timing Role: Compact, low-quiescent LDO providing regulated 1.8 V for sensor interface logic and ADC reference buffers. Use Value: WCSP6F package (0.8 × 1.2 mm) and 25 μA IQ enable integration into sub-100 mm² wearable PCBs without thermal derating. |
Use Scenario: Supplies 1.8 V I/O domain for microcontrollers interfacing with external SPI/I²C peripherals in battery-operated edge nodes. IC Role / Device Role / Timing Role: Enable-controlled power rail supporting low-power sleep modes and rapid wake-up sequencing. Use Value: CONTROL pin with 0.4 V max OFF threshold and auto-discharge ensures deterministic power-down and eliminates leakage paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| R1512H181B-TR-FE | 1.5 A, 1.8 V fixed, SOT-23-5 package (2.9 × 2.8 mm), 250 mV dropout @ 1.5 A, 70 dB PSRR @ 1 kHz | Larger footprint, lower PSRR, no VBIAS pin - simpler biasing but less efficient at ultra-low VIN | Choose for cost-sensitive designs where board space > 2 mm² is available and PSRR > 85 dB is not required. |
| MCP1826-1802E/DB | 1.5 A, 1.8 V fixed, DFN-8 (3 × 3 mm), 200 mV dropout @ 1.5 A, 80 dB PSRR @ 1 kHz, integrated soft-start | Larger package, higher dropout, no auto-discharge - requires external discharge circuit for controlled shutdown | Choose when soft-start control is mandatory and WCSP6F assembly capability is unavailable. |
Compared with R1512H181B-TR-FE and MCP1826-1802E/DB, TCR15AG18,LF delivers superior PSRR (95 dB vs. ≤80 dB) and lower dropout (120 mV vs. ≥200 mV) in a 75% smaller footprint - making it optimal for space- and noise-constrained portable applications where VBIAS supply is accessible.
Availability
TCR15AG18,LF is available at Aetrix Electronics and suitable for smartphone application processor rails, wireless modem RF bias, wearable sensor hubs, and IoT edge node I/O interfaces requiring stable component supply with full lifecycle support.
Supply support for TCR15AG18,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 components for consumer, industrial, and automotive markets, with expertise in power management, logic, and memory technologies.
The TCR15AG series targets ultra-compact, high-performance portable electronics - specifically engineered to replace larger LDOs in space-constrained battery-powered devices while maintaining low noise and fast transient response.
FAQ
What is the minimum required VBIAS voltage for TCR15AG18,LF?
The minimum VBIAS voltage for TCR15AG18,LF is VOUT + 1.4 V = 3.2 V, per the operating ranges table. At 1.8 V output, VBIAS must be ≥3.2 V and ≤5.5 V. Using VBIAS = 3.3 V is typical and ensures specified dropout (120 mV) and PSRR (95 dB) performance. Below 3.2 V, the device may fail to regulate or trigger under-voltage lockout.
Can TCR15AG18,LF operate with only ceramic capacitors?
Yes, TCR15AG18,LF is designed exclusively for ceramic capacitors: ≥4.7 μF at VIN, ≥4.7 μF at VOUT, and ≥1.0 μF at VBIAS. The datasheet specifies ESR < 1.0 Ω for stability. Tantalum or aluminum electrolytics are not recommended and may cause oscillation or degraded transient response due to higher ESR and ESL.
Does TCR15AG18,LF require the SENSE pin to be connected?
Yes - for fixed-output variants like TCR15AG18,LF, the SENSE pin must be shorted to VOUT. This connection enables remote sensing to compensate for PCB trace voltage drop between the regulator and load, improving output voltage accuracy under load. Leaving SENSE unconnected violates the recommended application circuit and risks regulation instability.
What is the purpose of the VBIAS pin on TCR15AG18,LF?
The VBIAS pin supplies independent bias power to the internal CMOS pass transistor gate driver, decoupling gate drive from VIN. This allows ultra-low dropout operation (120 mV) even when VIN is close to VOUT, and improves PSRR by isolating noise on VIN from the control loop. VBIAS must be ≥ VOUT + 1.4 V and stable - its ripple rejection is 60 dB @ 1 kHz.
How does the auto-discharge function work on TCR15AG18,LF?
When the CONTROL pin is driven LOW (<0.4 V), TCR15AG18,LF activates an internal 10 Ω discharge switch between VOUT and GND. This rapidly discharges the output capacitor, pulling VOUT to near 0 V within microseconds. It prevents floating outputs that could cause latch-up or undefined logic states in downstream circuitry during power-down sequences.
TCR15AG18,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- TCR15AG
- Package/Case:
- 6-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.648V @ 1.5A
- Current - Output:
- 1.5A
- Current - Quiescent (Iq):
- 40 µA
- Current - Supply (Max):
- -
- PSRR:
- 95dB ~ 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Current Limit, Thermal Shutdown, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WCSP (1.2x0.80)
TCR15AG18,LF FAQ
1.How can I place an order for TCR15AG18,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for TCR15AG18,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 TCR15AG18,LF reliable?
The price and inventory of TCR15AG18,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCR15AG18,LF is usually 5 days.
3.What payment methods are accepted for TCR15AG18,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCR15AG18,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCR15AG18,LF?
TCR15AG18,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCR15AG18,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 TCR15AG18,LF?
For technical support, including TCR15AG18,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCR15AG18,LF requirements.
6.How does Aetrix verify that TCR15AG18,LF is sourced from the original manufacturer or authorized distributors?
All TCR15AG18,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 TCR15AG18,LF meets industry standards.
7.What is the process for return or replacement of TCR15AG18,LF?
All TCR15AG18,LF units undergo pre-shipment inspection (PSI). If there is an issue with TCR15AG18,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 TCR15AG18,LF part is unused and in its original packaging.
Return procedure for TCR15AG18,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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