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Texas Instruments TPS7A05285PYKAR
- Part No.:
- TPS7A05285PYKAR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XFBGA, DSBGA
- Datasheet:
-
TPS7A05285PYKAR.pdf
- Description:
- IC REG LINEAR 2.85V 200MA 4DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:11,595
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Product details
Overview
TPS7A05285PYKAR from Texas Instruments is a 2.85-V fixed-output, ultralow-quiescent-current (1 µA typ) low-dropout regulator capable of sourcing 200 mA with 235 mV max dropout at full load. It features active output discharge, foldback current limiting, and operates across 1.4 V to 5.5 V input range. Designed for battery-powered wearables and always-on subsystems, it delivers ±1% output accuracy over –40°C to +125°C.
For engineers reviewing the TPS7A05285PYKAR datasheet, TPS7A05285PYKAR pinout, TPS7A05285PYKAR application, or TPS7A05285PYKAR equivalent, key selection criteria include quiescent current vs. load, dropout voltage at 200 mA, thermal performance in DSBGA, stability with 0.47-µF COUT, and enable logic thresholds for low-power sequencing.
Technical Context
The TPS7A05285PYKAR implements a PMOS pass transistor architecture enabling ultralow IQ and fast transient response. Its internal reference and error amplifier maintain regulation under dynamic loads up to 200 mA while supporting input voltages as low as 1.4 V - critical for single-cell Li-ion and alkaline battery systems.
It integrates an active pulldown circuit on the OUT pin for rapid discharge during disable, and includes UVLO (1.21–1.37 V) with 40-mV hysteresis and thermal shutdown (160°C trip). The device is fully specified across –40°C to +125°C junction temperature and supports stable operation with ceramic capacitors ≥0.47 µF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V ±1% (typ), ensuring precise rail generation for 2.8-V logic or RF biasing without external feedback. |
| Quiescent Current | 1 µA typical at no load; enables >10-year battery life in coin-cell-powered IoT sensors with 20-µA average system current. |
| Max Output Current | 200 mA continuous; sufficient to power microcontrollers, BLE radios, and sensor signal chains in compact wearables. |
| Dropout Voltage | 235 mV max at 200 mA (VOUT = 3.3 V); for TPS7A05285PYKAR (2.85 V), dropout is ≤222 mV - allows operation down to ~3.07 V input. |
| Input Voltage Range | 1.4 V to 5.5 V; compatible with single Li-SOCl₂ (3.6 V), Li-MnO₂ (3.0 V), two-cell alkaline (3.2 V), and USB-supplied systems. |
| Enable Threshold | VEN(HI) = 0.9 V min, VEN(LO) = 0.4 V max; supports direct interfacing with 1.8-V or 3.3-V GPIO without level-shifting. |
| Output Capacitor | Stable with ≥0.47 µF ceramic capacitor; eliminates need for large tantalum or electrolytic caps, reducing board area and cost. |
Pinout & Package
The TPS7A05285PYKAR uses the YKA package: a 4-pin, 0.65-mm × 0.65-mm, 0.35-mm pitch DSBGA with bottom-side terminations. Thermal pad must be connected to PCB ground plane for optimal thermal performance (RθJB = 66.9°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (A1) | Input supply connection | Accepts 1.4–5.5 V; requires ≥1-µF ceramic capacitor to GND placed adjacent to pin for EMI suppression and transient immunity. |
| EN (B1) | Enable control input | Active-high logic; tie to IN if always-on operation required; drives <10 nA leakage, minimizing standby current impact. |
| GND (B2) | Power ground reference | Must connect directly to low-impedance PCB ground plane; shared with thermal pad for thermal and electrical integrity. |
| OUT (A2) | Regulated output | Delivers 2.85 V ±1%; requires ≥0.47-µF ceramic capacitor to GND near pin to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ (1 µA typ) | Extends shelf life and operational runtime in energy-harvesting and coin-cell applications where µA-level sleep current is mandatory. |
| Active output discharge | Pulls OUT to GND within microseconds when disabled, preventing floating rails that could cause downstream latch-up or false wakeups. |
| Foldback current limit | Reduces short-circuit power dissipation by lowering output current under overload - protects die during sustained fault conditions. |
| Wide input range (1.4–5.5 V) | Supports direct regulation from primary batteries (Li-SOCl₂, Li-MnO₂), rechargeables (Li-ion), and multi-cell alkaline stacks without pre-regulation. |
| –40°C to +125°C operation | Validated for automotive cabin modules, industrial sensors, and outdoor edge devices requiring extended temperature reliability. |
Applications
| Wearable Health Monitor | Smart Remote Control |
|---|---|
Use Scenario: Continuous ECG sensing powered by CR2032 coin cell with Bluetooth LE transmission bursts. IC Role / Device Role / Timing Role: Primary 2.85-V LDO supplying analog front-end and BLE SoC, managing ultra-low sleep current and fast wake-up response. Use Value: 1-µA IQ extends battery life beyond 2 years; 200-mA peak capability supports radio transmit without brownout. |
Use Scenario: IR remote with motion wake, button press, and RF transmission using AA/AAA alkaline cells. IC Role / Device Role / Timing Role: Always-on 2.85-V supply for MCU and accelerometer; EN pin controlled by motion interrupt to minimize idle draw. Use Value: Active discharge prevents residual voltage on MCU reset line; 235-mV dropout ensures operation until battery reaches ~3.07 V. |
| Industrial Sensor Node | Portable Medical Diagnostic Tool |
Use Scenario: Battery-backed environmental sensor (temp/humidity/pressure) deployed in unheated outdoor enclosures. IC Role / Device Role / Timing Role: Main power regulator for low-power MCU and precision ADC, operating across –40°C to +85°C ambient. Use Value: ±1% accuracy and –40°C to +125°C qualification guarantee measurement integrity; DSBGA footprint saves space in sealed housing. |
Use Scenario: Handheld ultrasound probe with integrated FPGA and analog beamformer, powered by removable Li-ion pack. IC Role / Device Role / Timing Role: Secondary 2.85-V rail for clock buffers and interface logic, sequenced after main 3.3-V domain. Use Value: Fast transient response (<2.8 ms startup) meets FPGA configuration timing; foldback protection avoids thermal runaway during FPGA reconfiguration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-quiescent-current LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0528PYKAR | Identical YKA package and specs, but 2.8-V nominal output (vs. 2.85 V); 1-µA IQ, 200-mA rating, same thermal metrics. | Suitable where 2.8-V rail is acceptable (e.g., certain ARM Cortex-M cores), but not for 2.85-V ADC references or RF bias requiring tighter tolerance. | Select TPS7A0528PYKAR only if system tolerates 50-mV lower output; verify reference voltage compatibility before substitution. |
| MCP1700T-2802E/MB | 2.8-V fixed output, 1.6-µA IQ (typ), 250-mA max, SOT-23-3 package; no EN pin or active discharge; dropout 600 mV @ 250 mA. | Lacks enable control and fast discharge; larger dropout limits use with low-VIN sources like aging alkaline cells. | Choose MCP1700T-2802E/MB only for cost-sensitive, non-sequenced, non-battery-critical applications where 600-mV dropout is acceptable. |
Compared with TPS7A05285PYKAR, TPS7A0528PYKAR offers identical form-factor and efficiency but sacrifices 50 mV output precision, while MCP1700T-2802E/MB trades enable functionality, active discharge, and 2.7× higher dropout for lower unit cost and simpler layout.
Availability
TPS7A05285PYKAR is available at Aetrix Electronics and suitable for wearable electronics, always-on power supplies, and portable medical diagnostics requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for TPS7A05285PYKAR 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 leader delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS7A05 family targets ultra-low-power, space-constrained battery-operated systems - emphasizing sub-µA quiescent current, miniature DSBGA/X2SON packaging, and robust operation across extended temperature ranges.
FAQ
What is the maximum input voltage for the TPS7A05285PYKAR?
The TPS7A05285PYKAR supports an absolute maximum input voltage of 6.0 V, but its recommended operating range is 1.4 V to 5.5 V. Operation above 5.5 V risks permanent damage, and below 1.4 V may prevent regulation - especially critical when powering from partially discharged alkaline or Li-MnO₂ cells.
Does the TPS7A05285PYKAR require an external pull-up resistor on the EN pin?
No, the TPS7A05285PYKAR does not require an external pull-up on EN. When enable functionality is unused, the EN pin must be connected directly to IN. Its leakage current is only 10 nA at 5.5 V, so tying EN to IN adds negligible load - preserving the 1-µA quiescent current advantage of the TPS7A05285PYKAR.
Can the TPS7A05285PYKAR operate with a 0.47-µF output capacitor?
Yes, the TPS7A05285PYKAR is explicitly characterized and guaranteed stable with a minimum 0.47-µF ceramic output capacitor. Using smaller values risks oscillation or degraded transient response; larger values (up to 22 µF) improve ripple rejection but do not harm stability - a key design flexibility of the TPS7A05285PYKAR.
What is the thermal resistance (RθJB) of the TPS7A05285PYKAR in its YKA package?
The TPS7A05285PYKAR in the YKA (DSBGA) package has a junction-to-board thermal resistance (RθJB) of 66.9°C/W when mounted on a standard 4-layer PCB with thermal vias under the exposed pad. This value assumes proper soldering of the thermal pad to an internal ground plane - essential for maintaining safe operation at 200 mA in ambient temperatures up to +85°C.
Is the TPS7A05285PYKAR pin-compatible with other TPS7A05 variants in the YKA package?
Yes, all TPS7A05 variants in the YKA package - including TPS7A05285PYKAR, TPS7A0518PYKAR, and TPS7A0533PYKAR - share identical 4-pin pinout (IN, EN, GND, OUT), mechanical footprint, and thermal pad layout. Only the output voltage differs; no PCB redesign is needed when selecting alternate fixed-voltage versions of the TPS7A05285PYKAR.
TPS7A05285PYKAR 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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.308V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 3 µA
- Current - Supply (Max):
- -
- PSRR:
- 40dB (1kHz ~ 1MHz)
- 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
TPS7A05285PYKAR FAQ
1.How can I place an order for TPS7A05285PYKAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS7A05285PYKAR 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 TPS7A05285PYKAR reliable?
The price and inventory of TPS7A05285PYKAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A05285PYKAR is usually 5 days.
3.What payment methods are accepted for TPS7A05285PYKAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A05285PYKAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS7A05285PYKAR?
TPS7A05285PYKAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS7A05285PYKAR 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 TPS7A05285PYKAR?
For technical support, including TPS7A05285PYKAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A05285PYKAR requirements.
6.How does Aetrix verify that TPS7A05285PYKAR is sourced from the original manufacturer or authorized distributors?
All TPS7A05285PYKAR 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 TPS7A05285PYKAR meets industry standards.
7.What is the process for return or replacement of TPS7A05285PYKAR?
All TPS7A05285PYKAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A05285PYKAR, 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 TPS7A05285PYKAR part is unused and in its original packaging.
Return procedure for TPS7A05285PYKAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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