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Texas Instruments TPS727185YFFT
- Part No.:
- TPS727185YFFT
- Manufacturer:
- Texas Instruments
- Package:
- 4-UFBGA, DSBGA
- Datasheet:
-
TPS727185YFFT.pdf
- Description:
- IC REG LINEAR 1.85V 250MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
TPS727185YFFT from Texas Instruments is a 1.85-V fixed-output, 250-mA ultralow-IQ LDO linear regulator in a 4-ball DSBGA package (1.20 mm × 0.80 mm), featuring 7.9 µA quiescent current, 65 mV dropout at 100 mA, and ±50 mV load transient response for 200 mA step changes. It powers RF-sensitive analog rails in compact portable electronics.
For engineers reviewing the TPS727185YFFT datasheet, TPS727185YFFT pinout, TPS727185YFFT application, or TPS727185YFFT equivalent, key selection criteria include its factory-programmed 1.85-V output, 70 dB PSRR at 1 kHz, thermal shutdown at +160°C, stable operation with 1.0-µF ceramic output capacitance, and compatibility with 0.4-mm pitch wafer-level packaging for space-constrained designs.
Technical Context
The TPS727185YFFT uses a PMOS pass transistor to achieve low dropout and maintains regulation down to 65 mV headroom at 100 mA. Its internal EEPROM sets the precise 1.85-V output voltage, eliminating external feedback components.
It integrates undervoltage lockout (UVLO) triggering at 1.90 V (typ), active-high enable logic with 0.9 V turn-on threshold, and thermal shutdown cycling between +140°C (restart) and +160°C (shutdown). Ground pin current remains ≤130 µA across full load and temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.85 V ±2% over load, line, and –40°C to +125°C - eliminates need for external resistor divider and ensures precision biasing of RF ICs. |
| Max Output Current | 250 mA - supports moderate-power RF transceivers and baseband processors without external current boosting. |
| Quiescent Current | 7.9 µA - enables multi-week battery life in always-on sensor nodes and Bluetooth LE peripherals. |
| Dropout Voltage | 65 mV at 100 mA - allows operation from single-cell Li-ion (2.7–4.2 V) or coin-cell sources with minimal headroom loss. |
| PSRR | 70 dB at 1 kHz - suppresses switching noise from adjacent DC/DC converters feeding sensitive analog/RF circuitry. |
| Load Transient Response | ±50 mV for 200 mA load step - maintains stable supply during burst-mode RF transmission without external compensation. |
| Output Capacitor | Stable with ≥1.0 µF X5R/X7R ceramic - reduces BOM count and PCB area versus tantalum or electrolytic alternatives. |
Pinout & Package
TPS727185YFFT is housed in a 4-ball, 0.4-mm pitch DSBGA (DSBGA-4) package measuring 1.20 mm × 0.80 mm, optimized for ultra-compact handheld and wearable applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (A2) | Input power supply connection | Accepts 2.0–5.5 V input; requires local 0.1–1.0 µF ceramic decoupling to ground for optimal transient rejection. |
| EN (A1) | Active-high enable control | Drives >0.9 V to enable; <0.4 V to enter 120 nA shutdown - compatible with GPIOs of ultra-low-power MCUs. |
| GND (B1) | Ground reference | Primary return path for load and quiescent current; ball B1 is marked with dot on 1.85-V variants per TI YFF0004 outline. |
| OUT (B2) | Regulated output | Delivers 1.85 V ±2%; must connect ≥1.0 µF ceramic capacitor directly to this pin and GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Factory EEPROM voltage programming | Enables exact 1.85-V output without external resistors - guarantees accuracy across temperature and simplifies layout. |
| Ultralow ground pin current | ≤130 µA at 250 mA load and +125°C - minimizes system-level power loss and improves efficiency in battery-powered systems. |
| Thermal shutdown with hysteresis | +160°C shutdown / +140°C restart - protects against sustained overload while allowing safe recovery without manual reset. |
| No noise-reduction pin required | 33.5 µVRMS output noise (100 Hz–100 kHz) - meets RF PLL and ADC reference requirements without additional filtering components. |
| Soft-start current control | 70 mA typical startup current for 1 µF COUT - prevents inrush-induced rail collapse and avoids false triggering of upstream power monitors. |
Applications
| Wireless Handset Baseband | Bluetooth Low Energy Module |
|---|---|
Use Scenario: Powers baseband processor core voltage rail in dual-SIM smartphones with aggressive sleep-state current targets. IC Role / Device Role / Timing Role: Primary LDO delivering stable 1.85 V to ARM Cortex-A/M cores during dynamic DVFS transitions. Use Value: 7.9 µA IQ extends standby time by >15% versus standard LDOs; ±50 mV transient response prevents core brownout during 2G/3G handover bursts. | Use Scenario: Supplies 1.85-V analog front-end and radio transceiver in compact BLE beacons operating from CR2032 coin cells. IC Role / Device Role / Timing Role: Standby-optimized LDO enabling sub-10 µA system sleep current while maintaining fast wake-up capability. Use Value: 120 nA shutdown current and 100 µs startup time allow rapid transition from deep sleep to TX mode without timing penalty. |
| Zigbee® Sensor Node MCU | Portable Medical Pulse Oximeter |
Use Scenario: Provides regulated 1.85 V to 32-bit Zigbee SoC in battery-operated industrial sensor nodes deployed for 5+ years. IC Role / Device Role / Timing Role: Long-life power source for microcontroller and RF subsystem, operating across –40°C to +85°C ambient. Use Value: 2% output accuracy over temperature and 160°C thermal shutdown ensure reliable operation in uncontrolled environments without derating. | Use Scenario: Powers optical sensor analog chain and low-noise ADC in handheld pulse oximeters requiring clinical-grade signal integrity. IC Role / Device Role / Timing Role: Ultra-low-noise LDO supplying precision analog rails where switching ripple would corrupt SpO₂ measurements. Use Value: 33.5 µVRMS integrated noise and 70 dB PSRR at 1 kHz suppress DC/DC coupling into photodiode amplifier stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS72718YFFT | Fixed 1.80 V output (vs. 1.85 V); identical package, pinout, and specs otherwise | Used where 1.80 V is required for legacy SoC compatibility or tighter margin on 1.8-V nominal rails | Select when system requires exactly 1.80 V; no layout change needed - direct functional substitute with same thermal and transient behavior. |
| TPS7A05185PDBVR | 1.85 V output but in SOT-23-5 package; 1.5 µA IQ, 150 mA max output, higher dropout (250 mV @ 100 mA) | Suitable for cost-sensitive, non-space-constrained designs where ultra-small size is secondary to lowest possible IQ | Choose for lower quiescent current in less compact assemblies; not pin-compatible - requires PCB redesign and derating for 250 mA loads. |
Compared with TPS727185YFFT, TPS72718YFFT offers identical performance at 1.80 V for pin-compatible replacement, while TPS7A05185PDBVR trades size and current capability for ultra-low 1.5 µA IQ in a larger, non-drop-in package.
Availability
TPS727185YFFT is available at Aetrix Electronics and suitable for wireless handsets, BLE modules, and portable medical devices requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for TPS727185YFFT 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 specializing in analog and embedded processing technologies, with leadership in power management ICs and high-reliability signal-chain solutions.
The TPS727 family was designed specifically for ultra-low-power, space-constrained portable electronics - delivering factory-programmed precision voltage regulation with minimal quiescent current and fast transient response in wafer-level chip-scale packages.
FAQ
What is the exact output voltage tolerance of the TPS727185YFFT over temperature and load?
The TPS727185YFFT delivers 1.85 V with ±2.0% DC accuracy across the full operating range: –40°C to +125°C junction temperature, 0–250 mA load, and input voltage from VOUT + 0.3 V to 5.5 V. This specification is guaranteed in the Electrical Characteristics table of the SBVS128F datasheet and applies directly to the TPS727185YFFT variant.
Does the TPS727185YFFT require an input capacitor for stability?
The TPS727185YFFT does not require an input capacitor for basic stability, but TI recommends a 0.1–1.0 µF ceramic capacitor from IN to GND to improve transient response, reduce input ripple coupling, and counteract source impedance. This is specified in Section 8.2.1.1 of the TPS727185YFFT datasheet and applies to all YFF-package variants including the TPS727185YFFT.
What is the maximum junction temperature before thermal shutdown activates in the TPS727185YFFT?
The TPS727185YFFT enters thermal shutdown at +160°C (typical), with automatic recovery when junction temperature falls to +140°C (typical). This hysteresis prevents oscillation near the trip point and is fully characterized in the Electrical Characteristics table of the TPS727185YFFT datasheet under parameter TSD.
Can the TPS727185YFFT operate with a 1.0-µF output capacitor, and what type is recommended?
Yes, the TPS727185YFFT is explicitly designed to be stable with a minimum 1.0-µF ceramic output capacitor. X5R and X7R dielectrics are recommended due to their low ESR (<200 mΩ) and minimal capacitance shift over temperature - details are confirmed in Section 8.2.1.1 of the TPS727185YFFT datasheet.
Is the TPS727185YFFT pin-compatible with other members of the TPS727xxYFF family?
Yes, all TPS727xxYFF variants - including TPS727185YFFT, TPS72718YFFT, and TPS72728YFFT - share identical DSBGA-4 pinout (IN, EN, GND, OUT), package dimensions (1.20 mm × 0.80 mm), and ball pitch (0.4 mm). The only difference is factory-programmed output voltage, making them drop-in replacements for voltage-scaling design iterations.
TPS727185YFFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 4-UFBGA, DSBGA
- 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):
- 1.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.2V @ 200mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 110 µA
- Current - Supply (Max):
- 130 µA
- PSRR:
- 85dB ~ 45dB (10Hz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DSBGA (1x1)
TPS727185YFFT FAQ
1.How can I place an order for TPS727185YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS727185YFFT 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 TPS727185YFFT reliable?
The price and inventory of TPS727185YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS727185YFFT is usually 5 days.
3.What payment methods are accepted for TPS727185YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS727185YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS727185YFFT?
TPS727185YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS727185YFFT 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 TPS727185YFFT?
For technical support, including TPS727185YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS727185YFFT requirements.
6.How does Aetrix verify that TPS727185YFFT is sourced from the original manufacturer or authorized distributors?
All TPS727185YFFT 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 TPS727185YFFT meets industry standards.
7.What is the process for return or replacement of TPS727185YFFT?
All TPS727185YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS727185YFFT, 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 TPS727185YFFT part is unused and in its original packaging.
Return procedure for TPS727185YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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