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Texas Instruments TPS7A0528PDBZT
- Part No.:
- TPS7A0528PDBZT
- Manufacturer:
- Texas Instruments
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TPS7A0528PDBZT.pdf
- Description:
- IC REG LINEAR 2.8V 200MA SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:202
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Product details
Overview
TPS7A0528PDBZT from Texas Instruments is a 200-mA, ultralow-quiescent-current LDO regulator with 1-µA typical IQ, 2.8-V fixed output, 1% typical accuracy, and 235-mV max dropout at 200 mA - designed for battery-powered wearables, always-on subsystems, and portable electronics requiring extended runtime.
For engineers reviewing the TPS7A0528PDBZT datasheet, TPS7A0528PDBZT pinout, TPS7A0528PDBZT application, or TPS7A0528PDBZT equivalent, key selection criteria include its 1.4–5.5-V input range, active output discharge, foldback current limiting, stability with ≥0.47-µF ceramic output capacitor, and operation across –40°C to +125°C junction temperature.
Technical Context
The TPS7A0528PDBZT implements a PMOS pass transistor architecture enabling ultra-low quiescent current (1 µA typ) while maintaining fast transient response and low dropout voltage. Its enable-controlled shutdown reduces leakage to ≤300 nA, and integrated UVLO (1.3 V threshold, 40-mV hysteresis) prevents erratic startup under weak input sources.
It features an active pulldown circuit for rapid output discharge when disabled, foldback current limiting to limit power dissipation during overload, and thermal shutdown at 160°C with 20°C hysteresis. The device is stable with small ceramic capacitors and requires no external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±1% (typ), ensuring precise biasing for 2.8-V logic or analog rails without external feedback. |
| Max Output Current | 200 mA continuous, supporting moderate-power microcontrollers, sensors, or RF front-ends in compact systems. |
| Quiescent Current | 1 µA typical at light load, extending battery life in multi-year IoT endpoints and always-on wake-up circuits. |
| Dropout Voltage | 235 mV maximum at 200 mA (for 2.8-V output), enabling regulation from 3.035-V sources like single Li-MnO₂ or two alkaline cells. |
| Input Voltage Range | 1.4 V to 5.5 V, compatible with Li-ion, Li-SOCl₂, Li-MnO₂, and 2–3-cell alkaline batteries without pre-regulation. |
| Accuracy Over Temp | ±3% maximum from –40°C to +125°C, meeting industrial-grade voltage reference requirements for sensor signal chains. |
| Enable Threshold | VEN(HI) = 0.9 V min, allowing direct interface with low-voltage GPIOs (e.g., 1.8-V or 2.5-V I/O domains). |
Pinout & Package
TPS7A0528PDBZT uses the SOT-23 (3-pin) package (2.90 mm × 1.60 mm), optimized for space-constrained PCB layouts. Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT. No EN or NC pins - enable functionality is omitted in this variant, simplifying routing and reducing BOM count.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 1.4–5.5 V; requires ≥1-µF ceramic capacitor to ground for stability and transient suppression. |
| GND | Power ground reference | Must be connected to low-impedance system ground plane; serves as return path for all internal currents. |
| OUT | Regulated output | Delivers stable 2.8 V; requires ≥0.47-µF ceramic capacitor to ground for loop stability and load-transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ | 1 µA typical quiescent current enables >10-year battery life in 10-µA average-load applications (e.g., BLE beacon sleep mode). |
| Active Output Discharge | Integrated pulldown resistor (120 Ω typ) discharges output to <0.1 V within 100 µs after disable - critical for safe power sequencing. |
| Foldback Current Limit | Reduces short-circuit current to ~150 mA at VOUT = 0 V, limiting thermal stress and enabling self-recovery without latch-off. |
| Wide Input Range | Operates down to 1.4 V input, supporting direct regulation from aging primary lithium or partially discharged alkaline cells. |
| High Temp Rating | Specified from –40°C to +125°C junction temperature, suitable for automotive cabin modules and industrial edge sensors. |
Applications
| Wearable Health Monitor | Smart Remote Control |
|---|---|
Use Scenario: Continuous ECG/PPG sensing with Bluetooth LE transmission in wrist-worn patch. IC Role / Device Role / Timing Role: Primary 2.8-V supply for analog front-end and BLE SoC during active and deep-sleep cycles. Use Value: 1-µA IQ extends coin-cell lifetime beyond 2 years; 235-mV dropout allows operation until battery drops to 3.035 V. |
Use Scenario: Low-cost IR remote with motion wake-up and button-triggered RF transmission. IC Role / Device Role / Timing Role: Always-on 2.8-V rail powering accelerometer, MCU RTC, and RF transceiver sleep logic. Use Value: Active output discharge ensures clean reset on wake-up; foldback current limit prevents damage during accidental short-circuit. |
| Industrial Sensor Node | Portable Medical Device |
Use Scenario: Battery-powered vibration sensor node deployed in factory machinery with 10-year maintenance interval. IC Role / Device Role / Timing Role: Main power regulator for MEMS accelerometer, ultra-low-power MCU, and LoRaWAN transceiver. Use Value: –40°C to +125°C rating supports operation near hot motors; 1% accuracy maintains ADC reference integrity over temperature. |
Use Scenario: Handheld pulse oximeter using dual AAA alkaline cells and OLED display. IC Role / Device Role / Timing Role: Stable 2.8-V supply for LED drivers, analog signal chain, and display controller. Use Value: 1.4-V minimum input enables full utilization of alkaline cell discharge curve; 0.47-µF COUT minimizes board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0528PDQNR | Same electrical specs but in 1.0-mm × 1.0-mm X2SON-4 package with EN pin; adds enable control and smaller footprint. | Required where programmable enable or PCB area reduction is critical; not pin-compatible due to different pin count and layout. | Select PDQNR if system-level power sequencing or space constraints demand EN functionality and miniaturization. |
| MCP1700T-2802E/TT | 200-mA, 2.8-V LDO with 1.6-µA IQ (typ), but higher 600-mV dropout at 200 mA and no active discharge. | Suitable for cost-sensitive consumer devices where fast output discharge is unnecessary and input voltage margin is ample. | Choose MCP1700T-2802E/TT only when dropout headroom exceeds 600 mV and active discharge is not required. |
Compared with TPS7A0528PDBZT, the PDQNR offers enable control and smaller size but requires PCB redesign, while the MCP1700T-2802E/TT trades off higher dropout and no pulldown for lower unit cost - making TPS7A0528PDBZT optimal for space- and battery-life-critical designs needing guaranteed fast discharge.
Availability
TPS7A0528PDBZT is available at Aetrix Electronics and suitable for wearable electronics, always-on power supplies, and portable medical devices requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS7A0528PDBZT 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 specializing in analog, embedded processing, and power management ICs, with decades of expertise in high-reliability, low-power power solutions.
The TPS7A05 family was engineered specifically for ultra-low-power, battery-operated applications demanding nanoscale IQ, small footprint, and robust performance across wide temperature and input-voltage ranges.
FAQ
What is the maximum input voltage for the TPS7A0528PDBZT?
The TPS7A0528PDBZT supports an absolute maximum input voltage of 6.0 V, but its recommended operating range is 1.4 V to 5.5 V. Exceeding 5.5 V may trigger internal protection or degrade reliability; sustained operation above 6.0 V risks permanent damage per Absolute Maximum Ratings.
Does the TPS7A0528PDBZT include an enable pin?
No, the TPS7A0528PDBZT (SOT-23-3 package) does not include an enable pin. It is a simple three-terminal LDO: IN, GND, and OUT. Enable functionality is present only in variants like TPS7A0528PDQNR (X2SON-4) or TPS7A0528DBVR (SOT-23-5).
What output capacitor value is required for stability with the TPS7A0528PDBZT?
The TPS7A0528PDBZT is stable with a minimum 0.47-µF ceramic output capacitor (X5R or X7R dielectric). Using ≥1 µF improves transient response and PSRR; tantalum or aluminum electrolytic capacitors are not recommended due to ESR and reliability concerns.
Can the TPS7A0528PDBZT operate from a single alkaline cell?
Yes - the TPS7A0528PDBZT operates down to 1.4 V input, making it compatible with a single fresh alkaline cell (1.5–1.6 V) and functional until the cell discharges to ~1.4 V, delivering regulated 2.8 V output throughout that range when paired with sufficient headroom.
Is the TPS7A0528PDBZT RoHS-compliant and lead-free?
Yes, the TPS7A0528PDBZT is RoHS-compliant and lead-free per TI's official packaging documentation. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for lead-free reflow soldering profiles up to 260°C peak temperature.
TPS7A0528PDBZT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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):
- 2.8V
- 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:
- SOT-23-3
TPS7A0528PDBZT FAQ
1.How can I place an order for TPS7A0528PDBZT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS7A0528PDBZT 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 TPS7A0528PDBZT reliable?
The price and inventory of TPS7A0528PDBZT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A0528PDBZT is usually 5 days.
3.What payment methods are accepted for TPS7A0528PDBZT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A0528PDBZT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS7A0528PDBZT?
TPS7A0528PDBZT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS7A0528PDBZT 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 TPS7A0528PDBZT?
For technical support, including TPS7A0528PDBZT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A0528PDBZT requirements.
6.How does Aetrix verify that TPS7A0528PDBZT is sourced from the original manufacturer or authorized distributors?
All TPS7A0528PDBZT 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 TPS7A0528PDBZT meets industry standards.
7.What is the process for return or replacement of TPS7A0528PDBZT?
All TPS7A0528PDBZT units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A0528PDBZT, 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 TPS7A0528PDBZT part is unused and in its original packaging.
Return procedure for TPS7A0528PDBZT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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