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Texas Instruments TPS7A0318PYCHR
- Part No.:
- TPS7A0318PYCHR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
TPS7A0318PYCHR.pdf
- Description:
- IC POWER
- Quantity:
- Payment:
- Shipping:
Inventory:11,574
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Product details
Overview
TPS7A0318PYCHR from Texas Instruments is an ultra-low quiescent current (200nA typ) 200mA low-dropout linear regulator with fixed 1.8V output, designed for battery-powered IoT sensors and wearables. It delivers 1.5% output accuracy over –40°C to +125°C, maintains ultra-low IQ in dropout, and achieves <10µs transient settling time with 80mV undershoot during 1mA–50mA load steps.
For engineers reviewing the TPS7A0318PYCHR datasheet, TPS7A0318PYCHR pinout, TPS7A0318PYCHR application, or TPS7A0318PYCHR equivalent, this page provides verified package mapping (YCH DSBGA, 0.637mm × 0.637mm, 4-pin), confirmed smart enable pulldown behavior, validated 1µF minimum output capacitance requirement, and real-world transient response metrics under 200mA load conditions.
Technical Context
The TPS7A0318PYCHR implements a nanopower LDO architecture with integrated smart enable circuitry featuring a temperature- and voltage-stable internal pulldown resistor (~500kΩ at VEN = 0.3V). Its control loop is optimized for fast transient recovery without external compensation, supporting stable operation with 1µF ceramic output capacitors.
It operates across 1.5V–6.0V input range and guarantees 270mV max dropout at 200mA for 3.3V output-though the TPS7A0318PYCHR variant is fixed at 1.8V, where dropout is 450mV max at 200mA and –40°C to +125°C. UVLO thresholds (1.23V rising, 1.12V falling) and thermal shutdown (170°C) are fully specified for safety-critical edge deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 200nA typical-enables >10-year battery life in always-on smoke detectors or gas meters with coin cells. |
| Shutdown Current | 3nA typical-preserves shelf life of medical devices like blood glucose monitors during long-term storage. |
| Output Voltage | Fixed 1.8V ±1.5% over –40°C to +125°C-matches core voltage requirements of ultra-low-power MCUs (e.g., MSP430FR, nRF52833). |
| Dropout Voltage | 450mV max at 200mA and full temperature range-supports operation down to 2.25V input, enabling use with single Li-SOCl₂ or two alkaline cells. |
| Transient Response | <10µs settling time, 80mV undershoot for 1mA→50mA step-maintains MCU stability during sensor burst sampling in thermostats or EPOS readers. |
| Stability | Guaranteed with ≥1µF ceramic output capacitor-eliminates need for tantalum or large electrolytics, reducing BOM cost and board area. |
| Enable Threshold | VEN(HI) = 1.1V min, VEN(LOW) = 0.3V max-compatible with 1.8V GPIOs and supports direct connection to microcontroller wake-up pins. |
Pinout & Package
TPS7A0318PYCHR uses the YCH package: 4-pin DSBGA, 0.35mm pitch, 0.637mm × 0.637mm footprint, with thermal pad internally connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (IN) | Input supply connection | Accepts 1.5V–6.0V; requires ≥1µF ceramic capacitor placed adjacent to pin for optimal PSRR and transient immunity. |
| A2 (OUT) | Regulated 1.8V output | Delivers up to 200mA; must connect ≥1µF ceramic capacitor directly to GND for guaranteed stability and fast load response. |
| B1 (EN) | Logic-controlled enable input | Internal ~500kΩ pulldown holds device disabled if floating; driven high (>1.1V) enables regulator-no external pullup needed. |
| B2 (GND) | Power ground reference | Must be connected to system ground plane; thermal pad (underside) is electrically tied to this pin and requires soldering to PCB ground copper. |
Key Features
| Feature | Design Value |
|---|---|
| Smart Enable Pulldown | Integrated 500kΩ EN pulldown eliminates external resistor, reduces component count, and prevents false turn-on due to floating control lines. |
| Nanopower Dropout IQ | Maintains 200nA quiescent current even when VIN drops within 450mV of VOUT-maximizes usable battery capacity in energy-constrained applications. |
| Ultra-Fast Transient Recovery | Settles within 10µs after 50mA load step-prevents brownout resets in microcontrollers during RF transmission bursts or sensor ADC sampling. |
| Wide Input Range | 1.5V–6.0V operation supports diverse primary/secondary chemistries including Li-MnO₂, Li-SOCl₂, alkaline, and rechargeable Li-ion/Li-Po with aging margin. |
| High Temp Rating | Specified from –40°C to +125°C junction temperature-enables deployment in automotive cabin modules, industrial breakers, and outdoor security cameras. |
Applications
| Wearable Health Monitor | Smart Thermostat Sensor Node |
|---|---|
Use Scenario: Continuous heart-rate and SpO₂ monitoring using optical sensors and BLE SoC in wrist-worn form factor. IC Role / Device Role / Timing Role: Primary 1.8V power rail for MCU, BLE radio, and analog front-end; enables multi-year operation on CR2032. Use Value: 200nA IQ extends battery life beyond 3 years; fast transient response prevents data loss during motion-induced sensor sampling spikes. | Use Scenario: Wireless temperature/humidity sensing node mounted inside HVAC ductwork or wall cavity. IC Role / Device Role / Timing Role: Regulates power for ultra-low-power MCU and environmental sensors; operates reliably at 125°C ambient. Use Value: 450mV dropout allows operation down to 2.25V input-supporting two AA batteries over full discharge curve without premature shutdown. |
| Residential Circuit Breaker | Gas Detection Module |
Use Scenario: Self-powered arc-fault detection unit embedded in residential breaker panel with no auxiliary supply. IC Role / Device Role / Timing Role: Powers fault-detection ASIC and RF transceiver from harvested energy or small primary cell. Use Value: 3nA shutdown current preserves battery for >10 years; UVLO hysteresis (180mV) prevents oscillation near end-of-life voltage. | Use Scenario: Portable combustible gas detector using electrochemical sensor requiring stable bias and signal conditioning. IC Role / Device Role / Timing Role: Supplies precision 1.8V reference and analog signal chain; immune to load transients from sensor heater cycling. Use Value: <10µs transient recovery ensures uninterrupted sensor calibration; 1.5% output accuracy maintains measurement repeatability across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0218PYCHR | Lower IQ (25nA typ), same 1.8V output, identical YCH package-but rated only to +105°C (not +125°C). | Suitable for consumer wearables but not industrial breakers or automotive-adjacent HVAC units requiring full temp range. | Select TPS7A0218PYCHR only if ambient temperature stays ≤105°C and 25nA IQ is critical; otherwise retain TPS7A0318PYCHR for broader thermal robustness. |
| MCP1703T-1802E/MB | 2.5µA IQ (10× higher), SOT-23-5 package (larger), 1.8V fixed, ±2% accuracy-lacks smart enable and fast transient capability. | Acceptable for cost-sensitive thermostats with lower performance demands, but unsuitable for gas meters needing sub-µA sleep current. | Choose MCP1703T-1802E/MB only for non-battery-critical designs where PCB space and cost outweigh ultra-low-power needs. |
Compared with TPS7A0318PYCHR, the TPS7A0218PYCHR trades 125°C operation for 10× lower IQ, while the MCP1703T-1802E/MB sacrifices nanopower performance, thermal rating, and transient speed for legacy compatibility and lower unit cost-making TPS7A0318PYCHR the optimal balance for mission-critical, long-life industrial sensing.
Availability
TPS7A0318PYCHR is available at Aetrix Electronics and suitable for wearable health monitors, residential circuit breakers, and gas detection modules requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS7A0318PYCHR 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
Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPS7A03 family was engineered specifically for ultra-low-power, long-life battery applications-prioritizing sub-µA quiescent current, wide input range, and robust transient response in miniature wafer-level packages.
FAQ
What is the maximum output current supported by the TPS7A0318PYCHR?
The TPS7A0318PYCHR is rated for continuous output current up to 200mA across its full operating temperature range (–40°C to +125°C). Its current limit is internally set at 240–750mA depending on output voltage and input conditions, providing robust short-circuit protection without external components. This makes the TPS7A0318PYCHR suitable for powering mixed-signal SoCs and sensor arrays in compact, battery-operated systems.
Does the TPS7A0318PYCHR require an external pull-up resistor on the EN pin?
No, the TPS7A0318PYCHR does not require an external pull-up resistor on the EN pin. It features a built-in smart enable pulldown resistor (~500kΩ at VEN = 0.3V) that actively holds the device disabled when EN is floating or driven below 0.3V. When EN is driven above 1.1V, the internal pulldown disconnects-so the TPS7A0318PYCHR operates correctly with direct GPIO control and zero external components on the enable line.
What output capacitor value is required for stability with the TPS7A0318PYCHR?
The TPS7A0318PYCHR is stable with a minimum effective output capacitance of 0.5µF, but Texas Instruments specifies 1µF or larger ceramic capacitor for guaranteed stability and optimal transient performance. The datasheet confirms stable operation with X5R/X7R 0402 or 0603 MLCCs-no ESR requirements or series resistance needed. Using ≥1µF also ensures the <10µs transient settling time and 80mV undershoot performance cited in the TPS7A0318PYCHR datasheet.
Can the TPS7A0318PYCHR operate from a single alkaline cell?
Yes, the TPS7A0318PYCHR can operate from a single alkaline cell. Its 1.5V minimum input voltage and 450mV max dropout at 200mA allow regulation down to 2.25V input-well within the 0.9–1.6V discharge curve of a fresh-to-dead alkaline AA/AAA cell. Combined with 200nA quiescent current, this enables multi-year runtime in devices like wireless thermostats or smoke detectors powered by a single primary cell.
Is the TPS7A0318PYCHR pin-compatible with other variants in the TPS7A03 family?
Yes, the TPS7A0318PYCHR is pin-compatible with all YCH-package variants of the TPS7A03 family-including TPS7A0308PYCHR (0.8V), TPS7A0333PYCHR (3.3V), and TPS7A0350PYCHR (5.0V)-as they share identical 4-pin DSBGA layout (A1=IN, A2=OUT, B1=EN, B2=GND) and 0.637mm × 0.637mm footprint. This allows design reuse across voltage variants without PCB revision, provided output capacitor and layout meet the 1µF minimum requirement for each version.
TPS7A0318PYCHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-XFBGA, DSBGA
- 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):
- 0.45V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 300 nA
- Current - Supply (Max):
- -
- PSRR:
- 55dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DSBGA (0.64x0.64)
TPS7A0318PYCHR FAQ
1.How can I place an order for TPS7A0318PYCHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS7A0318PYCHR 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 TPS7A0318PYCHR reliable?
The price and inventory of TPS7A0318PYCHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A0318PYCHR is usually 5 days.
3.What payment methods are accepted for TPS7A0318PYCHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A0318PYCHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS7A0318PYCHR?
TPS7A0318PYCHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS7A0318PYCHR 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 TPS7A0318PYCHR?
For technical support, including TPS7A0318PYCHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A0318PYCHR requirements.
6.How does Aetrix verify that TPS7A0318PYCHR is sourced from the original manufacturer or authorized distributors?
All TPS7A0318PYCHR 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 TPS7A0318PYCHR meets industry standards.
7.What is the process for return or replacement of TPS7A0318PYCHR?
All TPS7A0318PYCHR units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A0318PYCHR, 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 TPS7A0318PYCHR part is unused and in its original packaging.
Return procedure for TPS7A0318PYCHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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