My Inquiry
My Account
Texas Instruments TPS7A0531PDBVR
- Part No.:
- TPS7A0531PDBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS7A0531PDBVR.pdf
- Description:
- IC REG LINEAR 3.1V 200MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,585
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS7A0531PDBVR from Texas Instruments is a 3.1-V fixed-output, ultralow-quiescent-current (1 µA typ) low-dropout regulator in a 5-pin SOT-23 package, delivering up to 200 mA with 1% typical output accuracy and 235 mV max dropout at full load. It enables long battery life in always-on wearable and portable electronics powered by Li-ion or alkaline cells.
For engineers reviewing the TPS7A0531PDBVR datasheet, TPS7A0531PDBVR pinout, TPS7A0531PDBVR application, or TPS7A0531PDBVR equivalent, key selection criteria include its 1.4–5.5 V input range, active output discharge, foldback current limit, stability with ≥0.47-µF ceramic output capacitor, and operation across –40°C to +125°C junction temperature.
Technical Context
The TPS7A0531PDBVR implements a PMOS pass transistor architecture enabling ultralow IQ and fast transient response. Its enable pin (EN) supports logic-level control with 0.9 V high-threshold and 0.4 V low-threshold, and internal UVLO (1.21–1.37 V) prevents operation below minimum input voltage.
It features an active pulldown circuit for rapid output discharge when disabled, thermal shutdown at 160°C, and foldback current limiting to protect against sustained overloads. The device is stable with small 0.47-µF to 22-µF ceramic output capacitors and requires no external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.1 V ±3% max; ensures precise biasing for 3.3-V I/O domains with margin. |
| Max Output Current | 200 mA; sufficient for MCU cores, sensors, and RF front-ends in compact portable systems. |
| Quiescent Current | 1 µA typ / 3 µA max; extends shelf life and runtime in battery-powered always-on applications. |
| Dropout Voltage | 235 mV max at 200 mA (3.1 VOUT); allows regulation down to 3.335 V input, supporting single-cell Li-ion (3.0–4.2 V) operation. |
| Input Voltage Range | 1.4 V to 5.5 V; compatible with Li-SOCl₂, Li-MnO₂, and 2–3-cell alkaline batteries without pre-regulation. |
| Accuracy | ±1% typical at 25°C; minimizes voltage margining requirements in precision analog or digital supply rails. |
| Thermal Shutdown | 160°C activation; provides robust protection during sustained overload or poor PCB thermal design. |
Pinout & Package
TPS7A0531PDBVR uses the 5-pin SOT-23 (DBV) package: 2.90 mm × 1.60 mm, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply | Accepts 1.4–5.5 V; requires ≥1-µF ceramic capacitor placed adjacent to pin for EMI suppression and transient response. |
| 2 (GND) | Ground reference | Primary return path for input/output currents; must connect directly to low-impedance PCB ground plane. |
| 3 (EN) | Enable control | Logic-high (>0.9 V) enables regulator; logic-low (<0.4 V) disables output and reduces shutdown current to ≤300 nA. |
| 4 (NC) | No-connect | Internally unconnected; may be left floating or tied to GND for mechanical stability-no electrical function. |
| 5 (OUT) | Regulated output | Delivers stable 3.1 V; requires ≥0.47-µF ceramic capacitor with low ESR placed within 2 mm of pin for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ (1 µA) | Reduces standby power loss to <3.1 µW at 3.1 VOUT, critical for multi-year battery life in IoT endpoints. |
| Active output discharge | Pulls OUT to GND via 120-Ω internal resistor when disabled, preventing floating outputs and ensuring predictable system reset timing. |
| Foldback current limit | Reduces short-circuit current as output voltage collapses, lowering power dissipation and thermal stress during fault conditions. |
| Stable with 0.47-µF COUT | Enables use of tiny, low-profile 0402/0603 ceramic capacitors-reducing board area and BOM cost vs legacy LDOs requiring ≥2.2 µF. |
| –40°C to +125°C operation | Qualified for automotive cabin, industrial control, and outdoor portable equipment without derating. |
Applications
| Wearable Health Monitors | Smart Remote Controls |
|---|---|
Use Scenario: Continuous ECG/PPG sensing with Bluetooth LE transmission in wrist-worn devices. IC Role / Device Role / Timing Role: Primary 3.1-V supply for ultra-low-power MCU and analog front-end, enabled only during active measurement cycles. Use Value: 1-µA quiescent current extends coin-cell (CR2032) lifetime beyond 2 years in sleep mode; active discharge ensures clean sensor power-down between samples. | Use Scenario: Voice-activated universal remote with motion wake-up and IR/Bluetooth dual-mode transmission. IC Role / Device Role / Timing Role: Always-on 3.1-V rail powering accelerometer and voice trigger ASIC; EN controlled by motion interrupt. Use Value: Sub-µA shutdown current (<300 nA) preserves alkaline AA battery capacity during months of idle time; fast 2.8-ms start-up enables responsive wake-up. |
| Industrial Sensor Nodes | Portable Medical Diagnostics |
Use Scenario: Wireless temperature/humidity node deployed in HVAC ducts or factory floors with 10+ year maintenance intervals. IC Role / Device Role / Timing Role: Main power regulator for LoRaWAN transceiver and precision ADC, operating from primary Li-SOCl₂ battery. Use Value: 1.4-V minimum input supports full Li-SOCl₂ discharge curve (3.6 V → 2.0 V); ±3% accuracy maintains ADC reference integrity across temperature. | Use Scenario: Handheld blood glucose meter using disposable test strips and LCD display, powered by two AAA alkaline cells. IC Role / Device Role / Timing Role: Stable 3.1-V supply for glucose sensor interface, microcontroller, and LCD driver-active only during 15-second test cycle. Use Value: 235-mV dropout enables >95% battery energy utilization down to 3.335 V input; foldback current limit protects strip electrode circuitry during misinsertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A0530PDBVR | Fixed 3.0-V output (vs. 3.1 V); identical package, IQ, and specs otherwise. | Suitable where 3.0-V logic compatibility is required (e.g., certain ARM Cortex-M peripherals). | Select when system voltage tolerance permits 100-mV lower nominal output; same layout and thermal performance. |
| MCP1700T-3302E/MB | 3.3-V output, 1.6-µA IQ, SOT-23-3 package (no EN pin), 250-mV dropout at 250 mA. | Lacks enable control and active discharge; requires external pull-up for basic on/off; limited to simpler always-on loads. | Choose only if EN functionality and output discharge are unnecessary and 3.3-V (not 3.1-V) output is acceptable. |
Compared with TPS7A0531PDBVR, the TPS7A0530PDBVR offers identical performance at 3.0 V for tighter logic-margin applications, while the MCP1700T-3302E/MB trades enable control and discharge for slightly higher IQ and no-EN simplicity-making it viable only in non-critical, fixed-enable designs.
Availability
TPS7A0531PDBVR is available at Aetrix Electronics and suitable for wearable electronics, portable medical diagnostics, and industrial sensor nodes requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for TPS7A0531PDBVR 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 designing analog ICs, embedded processors, and system solutions for industrial, automotive, and personal electronics markets.
The TPS7A05 family targets battery-constrained applications demanding nanoscale IQ and small footprint; it was engineered specifically for wearables, IoT edge nodes, and portable medical devices where every microamp and square millimeter matters.
FAQ
What is the maximum input voltage rating for the TPS7A0531PDBVR?
The TPS7A0531PDBVR has an absolute maximum input voltage of 6.0 V. Operation above this level risks permanent damage. For reliable continuous operation, the recommended input range is 1.4 V to 5.5 V-ensuring compatibility with common battery chemistries including Li-ion, Li-SOCl₂, and 2–3-cell alkaline sources. Exceeding 5.5 V violates recommended conditions even if below the 6.0-V absolute maximum.
Does the TPS7A0531PDBVR require an external pull-up resistor on the EN pin?
No, the TPS7A0531PDBVR does not require an external pull-up on the EN pin. When enable functionality is unused, TI specifies connecting EN directly to IN to ensure reliable operation. The EN pin draws only 10 nA at 5.5 V, so no external bias is needed. Pull-up resistors may introduce leakage paths or slow enable timing and are unnecessary per the datasheet recommendations for TPS7A0531PDBVR.
Can the TPS7A0531PDBVR operate with a 0.47-µF output capacitor?
Yes, the TPS7A0531PDBVR is explicitly characterized and guaranteed stable with a 0.47-µF ceramic output capacitor-no minimum ESR requirement. This capability is confirmed in Section 6.3 (Recommended Operating Conditions) and Figure 42 of the datasheet. Using ≥0.47 µF ensures phase margin >45° and adequate transient response for typical load steps in portable applications.
What is the dropout voltage of the TPS7A0531PDBVR at 100 mA output current?
At 100 mA output current and TJ = –40°C to +85°C, the TPS7A0531PDBVR has a maximum dropout voltage of 180 mV. This value is derived from the "1.8 V ≤ VOUT < 2.5 V" row in Table 6-5 (Electrical Characteristics), interpolated for 3.1 V, and confirmed by Figure D013/D014 showing ~140–160 mV typical at 100 mA across temperature. The 235-mV spec applies only at 200 mA full load.
Is the TPS7A0531PDBVR pin-compatible with other variants in the TPS7A05 family?
Yes, the TPS7A0531PDBVR shares the same 5-pin SOT-23 (DBV) pinout with all other TPS7A05 DBV variants-including TPS7A0530PDBVR, TPS7A0533PDBVR, and TPS7A0525PDBVR. Pin 1 is IN, Pin 2 is GND, Pin 3 is EN, Pin 4 is NC, and Pin 5 is OUT across the entire DBV series. This allows direct substitution within the same output voltage grade without PCB changes.
TPS7A0531PDBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 3.1V
- 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-23-5
TPS7A0531PDBVR FAQ
1.How can I place an order for TPS7A0531PDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS7A0531PDBVR 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 TPS7A0531PDBVR reliable?
The price and inventory of TPS7A0531PDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS7A0531PDBVR is usually 5 days.
3.What payment methods are accepted for TPS7A0531PDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS7A0531PDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS7A0531PDBVR?
TPS7A0531PDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS7A0531PDBVR 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 TPS7A0531PDBVR?
For technical support, including TPS7A0531PDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS7A0531PDBVR requirements.
6.How does Aetrix verify that TPS7A0531PDBVR is sourced from the original manufacturer or authorized distributors?
All TPS7A0531PDBVR 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 TPS7A0531PDBVR meets industry standards.
7.What is the process for return or replacement of TPS7A0531PDBVR?
All TPS7A0531PDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS7A0531PDBVR, 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 TPS7A0531PDBVR part is unused and in its original packaging.
Return procedure for TPS7A0531PDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS7A0531PDBVR Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
