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Microchip Technology TC1173-5.0VOATR
- Part No.:
- TC1173-5.0VOATR
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TC1173-5.0VOATR.pdf
- Description:
- IC REG LINEAR 5V 300MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,446
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Product details
Overview
TC1173-5.0VOATR from Microchip Technology Inc. is a fixed-output CMOS low dropout (LDO) voltage regulator delivering 5.0V ±0.5% at up to 300mA, with ultra-low 50µA typical supply current and 240mV typical dropout at full load. It features an open-drain ERROR flag for out-of-regulation detection and shutdown control for battery-sensitive applications such as portable medical instruments and GSM phones.
For engineers reviewing the TC1173-5.0VOATR datasheet, TC1173-5.0VOATR pinout, TC1173-5.0VOATR application, or TC1173-5.0VOATR equivalent, key selection considerations include its 5.0V fixed output, MSOP-8 package, 0.05µA shutdown current, Bypass input for noise reduction, and integrated over-temperature/over-current protection.
Technical Context
The TC1173-5.0VOATR uses CMOS pass transistor architecture enabling stable regulation across 0–300mA load with no increase in quiescent current under load. Its internal feed-forward compensation ensures fast transient response to step-load changes, while the ERROR output asserts low when VOUT drops >5% below nominal-configurable as a low-battery warning or processor reset signal via external RC network.
It operates from 2.7V to 6.0V input, requires only a 1µF output capacitor for stability, and incorporates thermal shutdown (150°C trip) and current limiting. The Bypass pin accepts a 470pF capacitor to reduce reference noise, lowering output noise to 260nV/√Hz at 1kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±0.5% - ensures precision rail for microcontrollers and analog sensors without external feedback. |
| Max Output Current | 300mA - supports moderate-power peripherals like LCD backlights or RF modules in portable systems. |
| Dropout Voltage | 240mV at 300mA - enables operation from single-cell Li-ion (3.0V min) or two-cell alkaline (3.2V min) sources. |
| Supply Current | 50µA typical at full load - extends battery life significantly vs. bipolar LDOs (20–60× lower). |
| Shutdown Current | 0.05µA typical - preserves battery charge during system sleep or standby modes. |
| Output Noise | 260nV/√Hz at 1kHz - low enough for noise-sensitive analog circuits (e.g., ADC references, op-amp supplies). |
| ERROR Threshold | 95% of VOUT (4.75V typ.) with 50mV hysteresis - provides reliable low-battery detection without chatter near threshold. |
| Operating Temp | -40°C to +125°C - qualified for industrial and automotive under-hood environments. |
Pinout & Package
TC1173-5.0VOATR is packaged in an 8-pin MSOP (Mini Small Outline Package), measuring 3.10 × 4.80 mm with 0.65 mm lead pitch. The package supports high-density PCB layouts and offers θJA ≈ 200°C/W for thermal management in compact designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 8) | Unregulated input supply | Accepts 2.7–6.0V; must exceed VOUT by ≥240mV at 300mA for regulation. |
| VOUT (Pin 2) | Regulated 5.0V output | Delivers up to 300mA; stable with ≥1µF ceramic or tantalum output capacitor. |
| GND (Pin 3) | Ground reference | Common return path for VIN, VOUT, SHDN, and ERROR; critical for noise and regulation accuracy. |
| Bypass (Pin 4) | Reference bypass input | Connect 470pF to GND to reduce internal reference noise and lower output noise to 260nV/√Hz. |
| ERROR (Pin 5) | Open-drain out-of-regulation flag | Asserts low when VOUT < 4.75V (typ.); requires external pull-up for reset or warning logic. |
| SHDN (Pin 6) | Active-high shutdown control | Logic high (>45% VIN) enables regulator; logic low (<15% VIN) reduces IQ to 0.05µA and forces VOUT = 0. |
| NC (Pins 1 & 7) | No-connect terminals | Not internally bonded; must remain unconnected per datasheet to avoid malfunction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 50µA typical at full load - enables multi-year battery life in always-on monitoring devices. |
| Low-noise operation with Bypass | 260nV/√Hz output noise - eliminates need for additional filtering in precision analog subsystems. |
| Fast load-transient response | Internal feed-forward compensation - maintains regulation during rapid current steps (e.g., RF transmit bursts). |
| Integrated protection | Thermal shutdown (150°C) and current limiting - prevents damage during overload or poor heatsinking. |
| Flexible ERROR functionality | Configurable as low-battery detector or processor RESET - reduces BOM count by eliminating discrete supervisor ICs. |
Applications
| Portable Medical Devices | GSM/PHS Handsets |
|---|---|
Use Scenario: Powering glucose meters and pulse oximeters operating from coin-cell or AAA batteries. IC Role / Device Role / Timing Role: Primary 5.0V LDO supplying MCU, display driver, and analog front-end. Use Value: 50µA quiescent current extends battery life to >2 years in intermittent-use devices; ERROR flag triggers low-battery alert before calibration drift occurs. | Use Scenario: Regulating power for baseband processors and audio codecs in dual-mode cellular handsets. IC Role / Device Role / Timing Role: Post-regulator after switching DC/DC converter, cleaning noisy SMPS output. Use Value: 240mV dropout allows efficient use of 3.3V SMPS rail; Bypass input suppresses switching noise to meet audio SNR requirements. |
| Linear Post-Regulator for SMPS | Industrial Instrumentation |
Use Scenario: Clean 5.0V rail generation downstream of buck converter in test equipment. IC Role / Device Role / Timing Role: Low-noise linear regulator providing stable supply for precision DACs and ADC references. Use Value: 260nV/√Hz noise and ±0.5% output accuracy ensure <1 LSB error in 16-bit data converters. | Use Scenario: Powering sensor signal conditioning circuits and isolated RS-485 transceivers in factory-floor analyzers. IC Role / Device Role / Timing Role: Main 5.0V supply with shutdown control synchronized to measurement cycles. Use Value: 0.05µA shutdown current minimizes standby drain; -40°C to +125°C rating ensures reliability in uncontrolled ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-5002E/TO | Same 5.0V output, 250mA max, 1.6µA quiescent current - lower IQ but reduced current capability and no ERROR output. | Lacks out-of-regulation flag; unsuitable where battery monitoring or reset generation is required. | Select MCP1700-5002E/TO only if ultra-low IQ dominates and ERROR functionality is omitted from system design. |
| TPS76350DBVR | 5.0V output, 150mA, 85µA IQ, active-low RESET output - higher IQ, lower current, different RESET polarity and threshold. | RESET asserts low at ~4.75V but lacks hysteresis; requires external pull-up and may need level-shifting for MCU compatibility. | Choose TPS76350DBVR only if TI's ecosystem integration or specific RESET timing requirements outweigh TC1173-5.0VOATR's superior noise, current, and hysteresis performance. |
Compared with MCP1700-5002E/TO and TPS76350DBVR, TC1173-5.0VOATR uniquely balances 300mA drive, 50µA IQ, integrated ERROR with hysteresis, and 260nV/√Hz noise - making it optimal for battery-powered instrumentation requiring both longevity and precision.
Availability
TC1173-5.0VOATR is available at Aetrix Electronics and suitable for portable medical devices, GSM handset power management, and industrial instrumentation requiring stable component supply across extended production lifecycles.
Supply support for TC1173-5.0VOATR 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 manufacturer specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified wafer fabrication and design facilities.
The TC1173 product line was designed specifically for ultra-low-power, high-accuracy linear regulation in battery-operated and noise-sensitive systems - emphasizing long service life, thermal robustness, and functional integration (ERROR, SHDN, Bypass) in space-constrained packages.
FAQ
What is the minimum input voltage required for TC1173-5.0VOATR to maintain regulation?
The TC1173-5.0VOATR requires VIN ≥ VOUT + dropout voltage. With a typical 240mV dropout at 300mA, the minimum input is 5.24V - but the absolute minimum specified is 2.7V (per datasheet Note 8), constrained by the condition VIN ≥ VR + VDROPOUT. For reliable 5.0V output at full load, VIN must be ≥5.24V; at light loads (0.1mA), dropout drops to 20mV, allowing VIN as low as 5.02V.
Does TC1173-5.0VOATR require an external capacitor on the Bypass pin?
No, the Bypass pin on TC1173-5.0VOATR is optional. Connecting a 470pF capacitor to GND reduces output noise to 260nV/√Hz; leaving it unconnected results in higher noise but retains full regulation and functionality. Larger capacitors increase startup time but do not harm operation.
Can TC1173-5.0VOATR be used without connecting the SHDN pin?
Yes - TC1173-5.0VOATR operates normally when SHDN is tied directly to VIN. The datasheet states that if shutdown control is not needed, SHDN should be connected to the input supply. In this configuration, the regulator remains enabled continuously, drawing 50µA typical supply current under full load.
What is the purpose of the ERROR output on TC1173-5.0VOATR, and how is it used?
The ERROR output on TC1173-5.0VOATR is an open-drain flag that goes low when VOUT falls >5% below 5.0V (i.e., <4.75V). It can serve as a low-battery indicator or, with an external RC network, generate a clean processor RESET pulse. A pull-up resistor (to VIN, VOUT, or another valid rail) is mandatory, and hysteresis (50mV) prevents oscillation near the threshold.
Is TC1173-5.0VOATR stable with ceramic output capacitors?
Yes - TC1173-5.0VOATR is stable with a minimum 1µF ceramic, tantalum, or aluminum electrolytic output capacitor. The datasheet specifies ESR between 0.1Ω and 5.0Ω; most X5R/X7R ceramics fall within this range. Solid tantalum is recommended for operation below -25°C due to aluminum electrolytic freezing.
TC1173-5.0VOATR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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):
- 5V
- 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-SOIC
TC1173-5.0VOATR FAQ
1.How can I place an order for TC1173-5.0VOATR through Aetrix?
Please submit a Request for Quotation (RFQ) for TC1173-5.0VOATR 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 TC1173-5.0VOATR reliable?
The price and inventory of TC1173-5.0VOATR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TC1173-5.0VOATR is usually 5 days.
3.What payment methods are accepted for TC1173-5.0VOATR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TC1173-5.0VOATR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TC1173-5.0VOATR?
TC1173-5.0VOATR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TC1173-5.0VOATR 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 TC1173-5.0VOATR?
For technical support, including TC1173-5.0VOATR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TC1173-5.0VOATR requirements.
6.How does Aetrix verify that TC1173-5.0VOATR is sourced from the original manufacturer or authorized distributors?
All TC1173-5.0VOATR 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 TC1173-5.0VOATR meets industry standards.
7.What is the process for return or replacement of TC1173-5.0VOATR?
All TC1173-5.0VOATR units undergo pre-shipment inspection (PSI). If there is an issue with TC1173-5.0VOATR, 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 TC1173-5.0VOATR part is unused and in its original packaging.
Return procedure for TC1173-5.0VOATR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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