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Texas Instruments TPS727285DSER
- Part No.:
- TPS727285DSER
- Manufacturer:
- Texas Instruments
- Package:
- 6-WFDFN
- Datasheet:
-
TPS727285DSER.pdf
- Description:
- IC REG LINEAR 2.85V 250MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,962
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Product details
Overview
TPS727285DSER from Texas Instruments is a 250-mA, ultralow-IQ (7.9 μA), fast-transient-response LDO linear regulator with fixed 2.85-V output, 65-mV typical dropout at 100 mA, ±2% output accuracy over load/line/temperature, and stable operation with 1.0-μF ceramic output capacitance. It serves as a precision voltage source for RF-sensitive and battery-powered subsystems in handheld wireless devices.
For engineers reviewing the TPS727285DSER datasheet, TPS727285DSER pinout, TPS727285DSER application, or TPS727285DSER equivalent, key selection criteria include its 7.9-μA quiescent current, 70-dB PSRR at 1 kHz, ±50-mV load transient response at 200 mA, thermal shutdown at +160°C, and compatibility with 1.0-μF X5R/X7R ceramic capacitors without noise-reduction pins.
Technical Context
The TPS727285DSER employs a PMOS pass transistor architecture enabling low dropout and inherent reverse-voltage blocking via the body diode. Its factory-programmed EEPROM sets the precise 2.85-V output, eliminating external feedback resistors and ensuring 2% accuracy across –40°C to +125°C.
It integrates active enable control (EN high-threshold = 0.9 V), undervoltage lockout (UVLO = 1.90 V), soft-start (0.07 V/μs ramp rate), and thermal shutdown (+160°C trip, +140°C reset). Ground pin current scales linearly with load (110 μA at 200 mA) and temperature, while PSRR degrades predictably below 0.5-V headroom.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V, factory-programmed via EEPROM; no external resistors required. |
| Max Output Current | 250 mA continuous; internal current limit clamps at 300–550 mA depending on input voltage. |
| Quiescent Current | 7.9 μA typical at 10 mA load; enables multi-year battery life in always-on sensors. |
| Dropout Voltage | 65 mV typical at 100 mA; allows operation from 2.915 V input to sustain 2.85 V output. |
| PSRR @ 1 kHz | 70 dB; suppresses switching noise from adjacent DC/DC converters in RF signal chains. |
| Load Transient | ±50 mV deviation for 200 mA step load/unload (1 μs edge); maintains RF IC bias stability. |
| Accuracy | ±2% over full temperature, line, and load range; eliminates need for post-production calibration. |
| Shutdown Current | 120 nA nominal when EN < 0.4 V; supports deep-sleep power modes in portable systems. |
Pinout & Package
TPS727285DSER is packaged in a 1.5-mm × 1.5-mm WSON-6 (DSE) package with exposed thermal pad (not electrically connected). The package supports high-density PCB layouts and efficient heat dissipation via soldered pad to inner ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUT | Regulated output | Delivers 2.85 V to load; requires ≥1.0-μF ceramic capacitor to GND for stability. |
| 2 - NC | No connection | Not bonded; may be tied to GND to improve thermal conduction to PCB. |
| 3 - GND | Ground reference | Primary return path for load and ground pin current (110 μA at 200 mA). |
| 4 - EN | Enable control | Active-high logic input; >0.9 V enables regulator, <0.4 V reduces IGND to 120 nA. |
| 5 - NC | No connection | Not bonded; may be tied to GND to improve thermal conduction to PCB. |
| 6 - IN | Input supply | Accepts 2.0–5.5 V; requires low-ESR bypass capacitor if sourced from noisy DC/DC. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ | 7.9 μA quiescent current enables >10-year shelf life in coin-cell–powered IoT sensors. |
| RF-Low-Noise Operation | 33.5 μVRMS integrated output noise (100 Hz–100 kHz); no noise-bypass pin needed. |
| Fast Load Transient Response | ±50 mV excursion for 200 mA load steps ensures stable biasing of RF transceivers during TX bursts. |
| Factory-Programmed Output | 2.85 V set permanently in EEPROM; eliminates resistor tolerance errors and layout sensitivity. |
| Thermal & Overcurrent Protection | Auto-cycling thermal shutdown (+160°C trip) and current limit (400 mA typical) prevent damage under fault conditions. |
| Stable with Small Ceramic Cap | Guaranteed stability with 1.0-μF X5R/X7R ceramic output capacitor; reduces BOM count and board area. |
Applications
| Wireless Handset RF Front-End | Bluetooth® Low Energy Sensor Node |
|---|---|
Use Scenario: Powering 2.85-V LNA and mixer stages in smartphone diversity receive paths where supply noise directly impacts EVM and sensitivity. IC Role / Device Role / Timing Role: Primary low-noise, low-dropout bias regulator delivering clean 2.85 V with 70-dB PSRR at 1 kHz to isolate RF ICs from noisy SoC supplies. Use Value: Enables 2.5-dB improvement in receiver sensitivity by suppressing 1-MHz–10-MHz switching noise from adjacent buck converters. | Use Scenario: Supplying 2.85-V BLE SoC and accelerometer in battery-operated wearable health monitors requiring multi-year operation. IC Role / Device Role / Timing Role: Always-on system regulator maintaining 2.85 V during deep-sleep (7.9 μA IQ) and scaling instantly to 200 mA during BLE advertising bursts. Use Value: Extends CR2032 battery life from 18 to 36 months by minimizing quiescent loss while preserving fast transient response. |
| Portable Medical Pulse Oximeter | Remote-Control Sub-GHz Transceiver |
Use Scenario: Biasing red/IR LED drivers and analog front-end ADC in compact, battery-powered pulse oximeters with strict EMI limits. IC Role / Device Role / Timing Role: Precision 2.85-V analog supply with ±2% accuracy and 33.5 μVRMS noise to ensure consistent LED current and ADC reference stability. Use Value: Reduces SpO2 measurement drift by 0.8% across –10°C to +50°C ambient due to tight output regulation and thermal stability. | Use Scenario: Powering 2.85-V sub-GHz transceiver IC in garage door openers and smart home remotes operating from two AA cells. IC Role / Device Role / Timing Role: Main system regulator supporting 2.85-V rail across full battery range (3.2 V to 1.8 V), leveraging 65-mV dropout to extend usable battery life. Use Value: Increases number of button-press transmissions per battery set by 32% compared to standard 3.3-V LDOs due to lower dropout and tighter line regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS72728YFFR | Same 2.8-V output, 4-ball DSBGA-4 package (1.2 mm × 0.8 mm); 120-nA shutdown current vs. 120-nA for TPS727285DSER. | Ultra-compact footprint for space-constrained wearables; lacks thermal pad for enhanced PCB heat spreading. | Select TPS72728YFFR only when board area is critical and thermal load is <150 mW; otherwise prefer DSE for better thermal performance. |
| TPS7A02285PDBVR | 2.85-V output, 200-mA rating, 25-nA IQ, SOT-23-5 package; higher PSRR (75 dB @ 1 kHz) but larger dropout (110 mV @ 100 mA). | Better ultra-low-power performance for sub-μA sleep modes; less suitable for high-current RF bursts due to lower current rating and slower transient response. | Choose TPS7A02285PDBVR for energy-harvesting or coin-cell applications needing <100-mA peak loads; retain TPS727285DSER for 200-mA RF burst support. |
Compared with TPS72728YFFR and TPS7A02285PDBVR, the TPS727285DSER uniquely balances 250-mA capability, 7.9-μA IQ, and 65-mV dropout in a thermally robust 1.5-mm × 1.5-mm WSON, making it optimal for RF-intensive portable designs where both peak current and standby efficiency are critical.
Availability
TPS727285DSER is available at Aetrix Electronics and suitable for wireless handsets, BLE sensor nodes, and portable medical devices requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for TPS727285DSER 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 ultralow-power, RF-sensitive portable electronics-delivering factory-programmed precision, fast transient response, and minimal board area in wafer-level and SON packages.
FAQ
What is the guaranteed output voltage tolerance of the TPS727285DSER over temperature and load?
The TPS727285DSER guarantees ±2% output voltage accuracy across the full operating junction temperature range (–40°C to +125°C), input voltage range (2.0 V to 5.5 V), and output load range (0 mA to 250 mA). This specification is verified per TI's Electrical Characteristics table and includes initial tolerance, line regulation, load regulation, and thermal drift-all measured with 1.0-μF ceramic output capacitance.
Can the TPS727285DSER operate stably with less than 1.0 μF output capacitance?
No-the TPS727285DSER is specified and tested for stability only with ≥1.0 μF ceramic output capacitance (X5R or X7R dielectric). Using smaller values risks oscillation or degraded transient response. The datasheet explicitly states "stable with a 1.0-μF ceramic capacitor" and defines maximum ESR as 200 mΩ; deviating invalidates the guaranteed PSRR and load-step performance of the TPS727285DSER.
What is the maximum allowable input voltage for the TPS727285DSER, and what protection exists beyond that?
The absolute maximum input voltage for the TPS727285DSER is +6.0 V, per the Absolute Maximum Ratings table. Exceeding this risks permanent damage. The device includes no overvoltage protection circuitry-only thermal shutdown (+160°C) and current limiting (300–550 mA). Therefore, external overvoltage clamping (e.g., TVS diode) is required if input transients could exceed 6.0 V in the application using the TPS727285DSER.
How does the enable pin (EN) behavior affect system power sequencing for the TPS727285DSER?
The TPS727285DSER EN pin is active-high with a 0.9-V turn-on threshold and 0.4-V turn-off threshold. When EN rises above 0.9 V, the output ramps at 0.07 V/μs (typical startup time = 100 μs to 98% of 2.85 V). When EN falls below 0.4 V, ground current drops to 120 nA, disabling regulation. This behavior allows clean, controlled power-up/down sequencing in multi-rail systems using the TPS727285DSER.
Does the TPS727285DSER require an input capacitor, and if so, what value and type are recommended?
An input capacitor is not required for stability of the TPS727285DSER, but TI recommends a 0.1-μF to 1.0-μF low-ESR ceramic capacitor (X5R/X7R) between IN and GND. This improves transient response, noise rejection, and ripple suppression-especially when the TPS727285DSER is powered from a noisy DC/DC converter or located far from the main power source. Larger values may be used for high-slew-rate load transients.
TPS727285DSER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFDFN
- 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):
- 2.85V
- 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:
- 6-WSON (1.5x1.5)
TPS727285DSER FAQ
1.How can I place an order for TPS727285DSER through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS727285DSER 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 TPS727285DSER reliable?
The price and inventory of TPS727285DSER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS727285DSER is usually 5 days.
3.What payment methods are accepted for TPS727285DSER?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS727285DSER transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS727285DSER?
TPS727285DSER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS727285DSER 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 TPS727285DSER?
For technical support, including TPS727285DSER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS727285DSER requirements.
6.How does Aetrix verify that TPS727285DSER is sourced from the original manufacturer or authorized distributors?
All TPS727285DSER 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 TPS727285DSER meets industry standards.
7.What is the process for return or replacement of TPS727285DSER?
All TPS727285DSER units undergo pre-shipment inspection (PSI). If there is an issue with TPS727285DSER, 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 TPS727285DSER part is unused and in its original packaging.
Return procedure for TPS727285DSER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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