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Microchip Technology TC1173-3.0VUATR
- Part No.:
- TC1173-3.0VUATR
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TC1173-3.0VUATR.pdf
- Description:
- IC REG LINEAR 3V 300MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,524
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Product details
Overview
TC1173-3.0VUATR from Microchip Technology is a fixed-output, CMOS low dropout (LDO) regulator delivering 3.0 V ±0.5% at up to 300 mA, with ultra-low 50 µA typical supply current and 240 mV typical dropout voltage at full load. It features an open-drain ERROR output for low-battery detection or processor reset generation, shutdown control (SHDN), and bypass input for noise reduction - deployed in battery-powered medical instruments and portable communications devices.
For engineers reviewing the TC1173-3.0VUATR datasheet, TC1173-3.0VUATR pinout, TC1173-3.0VUATR application, or TC1173-3.0VUATR equivalent, key selection criteria include its 3.0 V precision output, MSOP-8 package footprint, 0.05 µA shutdown current, ±40 ppm/°C temperature coefficient, and integrated over-temperature/over-current protection - all critical for space-constrained, long-life portable systems.
Technical Context
The TC1173-3.0VUATR uses CMOS pass transistor architecture enabling stable regulation from 0 mA to 300 mA without supply current increase, unlike bipolar LDOs. Its internal feed-forward compensation ensures fast transient response to load steps, while the ERROR flag asserts low when VOUT drops >5% below 3.0 V due to input undervoltage, overload, or thermal limiting.
It operates across –40°C to +125°C junction temperature, supports 1 µF minimum output capacitance, and achieves 60 dB PSRR at ≤1 kHz. The Bypass pin accepts a 470 pF capacitor to reduce reference noise, lowering output noise to 260 nV/√Hz at 1 kHz - essential for sensitive analog or RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±0.5% - guarantees system rail stability under varying load/temperature for microcontroller core or sensor biasing. |
| Max Output Current | 300 mA - sufficient to power mid-complexity portable SoCs or multi-peripheral subsystems from single-cell Li-ion or alkaline sources. |
| Dropout Voltage | 240 mV at 300 mA - enables operation down to VIN = 3.24 V, maximizing usable battery capacity in 3.3 V systems. |
| Supply Current | 50 µA typical at full load - extends battery life significantly versus bipolar regulators (20–60× lower quiescent draw). |
| Shutdown Current | 0.05 µA typical - reduces standby drain to negligible levels during deep sleep, critical for multi-year IoT endpoint operation. |
| ERROR Threshold | 2.85 V (95% of 3.0 V) with 50 mV hysteresis - provides clean, chatter-free low-battery warning or reset assertion without external timing components. |
| Output Noise | 260 nV/√Hz at 1 kHz - meets stringent noise requirements for ADC references, audio codecs, or RF front-end power rails. |
Pinout & Package
TC1173-3.0VUATR is housed in an 8-pin MSOP package (3.0 mm × 3.0 mm × 1.1 mm height), optimized for high-density PCB layouts in portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VOUT | Regulated output terminal | Delivers stable 3.0 V to load; requires ≥1 µF ceramic or tantalum capacitor to ground for stability. |
| 2 - GND | Ground reference | Primary return path for load and internal circuitry; must connect to low-impedance system ground plane. |
| 3 - NC | No-connect terminal | Internally unconnected; must remain floating - no routing or soldering allowed. |
| 4 - Bypass | Reference bypass input | Accepts 470 pF capacitor to ground to suppress reference noise and reduce output noise by >50%. |
| 5 - ERROR | Open-drain out-of-regulation flag | Asserts low when VOUT ≤2.85 V; requires external pull-up (to VIN/VOUT) for logic-level interface or reset timing. |
| 6 - SHDN | Active-high shutdown control | Drives regulator into ultra-low-power state (0.05 µA) when pulled low; VIH ≥45% VIN, VIL ≤15% VIN. |
| 7 - NC | No-connect terminal | Internally unconnected; must remain floating - no routing or soldering allowed. |
| 8 - VIN | Unregulated input supply | Accepts 2.7–6.0 V input; requires local 1 µF decoupling if sourced from battery or >10-inch wiring. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 50 µA typical at full load - preserves battery energy in always-on monitoring applications like wearable ECG sensors. |
| Low-noise operation with bypass | 260 nV/√Hz output noise (1 kHz) with 470 pF on Bypass pin - suitable for powering precision ADCs or RF synthesizers. |
| Fast load transient response | Internal feed-forward compensation - maintains regulation within ±1% during 100 mA step loads, avoiding brownouts. |
| Dual-protection architecture | Integrated over-temperature shutdown (150°C trip) and current limiting (~550 mA short-circuit) - eliminates need for external protection circuits. |
| Programmable ERROR function | Configurable as low-battery detector or processor RESET via external RC network - enables flexible system-level power management. |
Applications
| Portable Medical Sensors | Cellular/GSM Handsets |
|---|---|
|
Use Scenario: Powering low-power ECG front-end ASICs and Bluetooth LE transceivers in disposable patch monitors. IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying analog signal chain and digital baseband, with ERROR used for end-of-life battery alert. Use Value: 50 µA quiescent current extends single-CR2032 battery life beyond 12 months; 240 mV dropout enables full utilization of battery's 2.8–3.3 V discharge curve. |
Use Scenario: Regulating 3.0 V rail for GSM modem baseband processors and SIM card interfaces in compact feature phones. IC Role / Device Role / Timing Role: Post-regulator after switching DC/DC converter, providing clean, low-noise supply with fast transient recovery during burst transmission. Use Value: 60 dB PSRR at 1 kHz rejects SMPS ripple; Bypass pin reduces phase noise in RF synthesizer VCO supply, improving adjacent-channel rejection. |
| Handheld Test Instruments | Linear Post-Regulators for SMPS |
|
Use Scenario: Supplying precision op-amps and 16-bit SAR ADCs in battery-operated multimeters and oscilloscope probes. IC Role / Device Role / Timing Role: Low-noise 3.0 V source for analog signal conditioning path, with SHDN controlled by MCU to conserve power between measurements. Use Value: 260 nV/√Hz noise floor ensures <1 LSB error in 16-bit conversions; ±0.5% output accuracy eliminates need for calibration trim. |
Use Scenario: Adding low-noise, tightly regulated 3.0 V output to existing 3.3 V buck converter designs for noise-sensitive peripherals. IC Role / Device Role / Timing Role: Secondary LDO stage filtering residual switching noise and compensating for load-dependent droop in primary SMPS. Use Value: 0.5% load regulation (0.1–300 mA) maintains consistent voltage for USB PHY or Ethernet MAC, preventing link instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3002E/TO | Same 3.0 V output, but SOT-23-5 package; 2.5 µA quiescent current (lower), 250 mA max output (lower), no ERROR pin. | Lacks out-of-regulation flag and shutdown control - unsuitable where battery monitoring or system reset is required. | Select MCP1700-3002E/TO only for ultra-low-IQ, low-current applications (<250 mA) without fault signaling needs. |
| NCP1117ST30T3G | 3.0 V output, TO-220/SOT-223; 6 mA quiescent current (120× higher), 1 A output, no ERROR or SHDN pins. | Higher thermal mass and quiescent draw - incompatible with battery life targets or space-constrained PCBs. | Choose NCP1117ST30T3G only for high-current, non-portable industrial applications where size and IQ are secondary. |
Compared with MCP1700-3002E/TO and NCP1117ST30T3G, TC1173-3.0VUATR uniquely balances 300 mA capability, 50 µA IQ, ERROR flag, and MSOP-8 footprint - making it the sole fit for compact, battery-aware systems requiring both performance and fault visibility.
Availability
TC1173-3.0VUATR is available at Aetrix Electronics and suitable for battery-operated medical instruments, cellular handsets, and handheld test equipment requiring stable component supply and long-term lifecycle support.
Supply support for TC1173-3.0VUATR 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
Microchip Technology Inc. is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified manufacturing.
The TC1173 series was designed specifically for ultra-low-power, high-accuracy linear regulation in portable and battery-backed systems - emphasizing quiescent current efficiency, noise performance, and integrated fault signaling.
FAQ
What is the maximum input voltage rating for the TC1173-3.0VUATR?
The TC1173-3.0VUATR has an absolute maximum input voltage rating of 6.5 V. Its recommended operating input range is 2.7 V to 6.0 V, ensuring reliable regulation while maintaining low dropout and thermal safety. Exceeding 6.5 V risks permanent damage per the Absolute Maximum Ratings table in DS21362C.
Does the TC1173-3.0VUATR require an external capacitor on the Bypass pin?
No - the Bypass pin on the TC1173-3.0VUATR is optional. Connecting a 470 pF capacitor from Bypass to ground reduces output noise to 260 nV/√Hz at 1 kHz; leaving it unconnected results in higher noise but retains full functionality. Larger capacitors increase startup time without proportional noise benefit.
How does the ERROR output behave on the TC1173-3.0VUATR during shutdown?
During shutdown (SHDN = low), the ERROR output on the TC1173-3.0VUATR is disabled and floats - it does not assert or drive any state. ERROR only functions when SHDN is high and the regulator is enabled; its threshold remains fixed at 95% of 3.0 V (2.85 V) with 50 mV hysteresis.
Can the TC1173-3.0VUATR be used with ceramic output capacitors?
Yes - the TC1173-3.0VUATR is stable with ceramic output capacitors ≥1 µF, provided their effective series resistance (ESR) is between 0.1 Ω and 5.0 Ω. Standard X5R/X7R ceramics meet this requirement and are preferred for small size and temperature stability in portable designs.
What is the thermal shutdown behavior of the TC1173-3.0VUATR?
The TC1173-3.0VUATR initiates thermal shutdown when die temperature exceeds 150°C, disabling output and reducing supply current to 0.05 µA. It automatically recovers when junction temperature falls to ~140°C. This protects against sustained overload or poor PCB thermal design in the MSOP-8 package (θJA ≈ 200°C/W).
TC1173-3.0VUATR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.48V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
TC1173-3.0VUATR FAQ
1.How can I place an order for TC1173-3.0VUATR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1173-3.0VUATR 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 TC1173-3.0VUATR reliable?
The price and inventory of TC1173-3.0VUATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1173-3.0VUATR is usually 5 days.
3.What payment methods are accepted for TC1173-3.0VUATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1173-3.0VUATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1173-3.0VUATR?
TC1173-3.0VUATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1173-3.0VUATR 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 TC1173-3.0VUATR?
For technical support, including TC1173-3.0VUATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1173-3.0VUATR requirements.
6.How does Aetrix verify that TC1173-3.0VUATR is sourced from the original manufacturer or authorized distributors?
All TC1173-3.0VUATR 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 TC1173-3.0VUATR meets industry standards.
7.What is the process for return or replacement of TC1173-3.0VUATR?
All TC1173-3.0VUATR units undergo pre-shipment inspection (PSI). If there is an issue with TC1173-3.0VUATR, 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 TC1173-3.0VUATR part is unused and in its original packaging.
Return procedure for TC1173-3.0VUATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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