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Texas Instruments TLV75528PDBVR
- Part No.:
- TLV75528PDBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV75528PDBVR.pdf
- Description:
- IC REG LINEAR 2.8V 500MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,690
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Product details
Overview
TLV75528PDBVR from Texas Instruments is a 500mA, low-quiescent-current (25μA typ), fixed 2.8V output LDO regulator in SOT-23-5 (DBV) package, supporting 1.45V–5.5V input range and delivering 1% output accuracy at 85°C - used for powering MCU core rails, camera sensor bias, and portable device subsystems.
For engineers reviewing the TLV75528PDBVR datasheet, TLV75528PDBVR pinout, TLV75528PDBVR application, or TLV75528PDBVR equivalent, key selection criteria include dropout voltage (≤238mV at 500mA), active output discharge, foldback current limit, PSRR (46dB @ 100kHz), and stability with 1µF ceramic output capacitor.
Technical Context
The TLV75528PDBVR employs a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR across 1kHz–1MHz. Its internal bandgap reference and error amplifier deliver ±1% output accuracy over temperature and line/load variations.
Functional modes include normal regulation (VIN ≥ VOUT + VDO), dropout (VIN < VOUT + VDO, output tracks input), and disabled state (EN < VLO), with integrated UVLO (1.21–1.44V), thermal shutdown (165°C), and active pulldown (120Ω) during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.8V ±1% max at 85°C - ensures stable core supply for 2.8V I/O domains and image sensors. |
| Max output current | 500mA - supports moderate-power peripherals like display drivers and RF front-end bias circuits. |
| Dropout voltage | 238mV max at 500mA (3.3VOUT variant data applied per family spec; 2.8VOUT dropout ≤250mV confirmed via DBV package thermal limits) |
| Quiescent current | 25μA typical - enables >1-year battery life in always-on IoT sensors and remote controls. |
| PSRR | 46dB @ 100kHz - suppresses switching noise from adjacent DC/DC converters in mixed-power systems. |
| Stability | With ≥1µF X5R/X7R ceramic COUT - eliminates need for ESR-tuned tantalum, reducing BOM count and board area. |
| Enable threshold | VHI = 1V, VLO = 0.3V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9mm × 2.8mm footprint, no thermal pad, RθJA = 100.8°C/W (JEDEC), suitable for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply | Accepts 1.45V–5.5V; requires ≥1µF ceramic capacitor to GND for stability and transient response. |
| 2 (GND) | Ground reference | Common return path for IN, OUT, and EN; must connect to low-impedance ground plane. |
| 3 (EN) | Enable control | Active-high logic input; drives >1V to enable, <0.3V to disable; internal 120Ω pulldown ensures known state when floating. |
| 4 (NC) | No connection | Unbonded pin; must remain unconnected and unpopulated on PCB - no routing or copper fill. |
| 5 (OUT) | Regulated output | Delivers 2.8V ±1%; actively discharged to GND during shutdown via internal switch for monotonic power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in soft-start | Monotonic VOUT rise prevents inrush current spikes and input rail droop during power-up. |
| Foldback current limit | Reduces thermal stress during short-circuit by scaling current down as VOUT collapses - protects pass transistor. |
| Active output discharge | Internal 120Ω pulldown discharges COUT rapidly upon shutdown, ensuring clean reset and avoiding floating states. |
| High PSRR | 46dB @ 100kHz enables co-location with noisy buck converters without additional filtering stages. |
| Low IQ operation | 25μA quiescent current minimizes standby power loss - critical for battery-backed real-time clocks and wake-on-event circuits. |
Applications
| Portable Power Management | MCU Core Supply |
|---|---|
|
Use Scenario: Powering ARM Cortex-M4 microcontrollers in handheld medical devices with dual-battery backup. IC Role / Device Role / Timing Role: Primary 2.8V core LDO supplying CPU, RAM, and ADC reference rails. Use Value: 1% accuracy and 25μA IQ extend battery runtime while maintaining timing-critical analog performance. |
Use Scenario: Regulating 2.8V supply for Wi-Fi SoC baseband processor in smart home hubs. IC Role / Device Role / Timing Role: Dedicated LDO for digital core domain, decoupled from noisy RF power stage. Use Value: 46dB PSRR at 100kHz rejects switching noise from adjacent 2.4GHz PA DC/DC, preventing packet errors. |
| Camera Sensor Bias | Industrial Sensor Node |
|
Use Scenario: Providing clean 2.8V bias to CMOS image sensor analog front-end in automotive rear-view cameras. IC Role / Device Role / Timing Role: Low-noise analog supply LDO with fast load transient response for pixel readout. Use Value: 238mV dropout enables operation from degraded 3.3V rail during cold-crank, sustaining image capture. |
Use Scenario: Powering ultra-low-power environmental sensor cluster (temp/humidity/pressure) in predictive maintenance edge node. IC Role / Device Role / Timing Role: Always-on 2.8V supply enabling sub-1μA sleep current and wake-on-threshold interrupt. Use Value: Active discharge ensures deterministic reset after brown-out, eliminating firmware lockup on power recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLS850F2BHTSA1 | Automotive-grade (AEC-Q100), 500mA, 2.8V, but higher IQ (45μA) and larger TSD hysteresis (20°C). | Qualified for under-hood automotive use; includes watchdog and reset functions not present in TLV75528PDBVR. | Select for automotive safety-critical systems requiring ASIL-B compliance; avoid for cost-sensitive consumer designs. |
| MCP1700T-2802E/TT | 250mA max output, 1.6μA IQ, SOT-23-3 package - no EN pin or active discharge. | Limited to ultra-low-power applications (<250mA); lacks enable control and fast discharge for sequenced systems. | Choose only when strict <2μA standby dominates over current capability and sequencing needs. |
Compared with TLS850F2BHTSA1 and MCP1700T-2802E/TT, the TLV75528PDBVR uniquely balances 500mA drive, 25μA IQ, active discharge, and 1% accuracy in a standard SOT-23-5 - making it optimal for industrial and portable designs needing robust yet simple regulation without automotive qualification overhead.
Availability
TLV75528PDBVR is available at Aetrix Electronics and suitable for portable electronics, MCU power management, and camera sensor bias applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TLV75528PDBVR 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 LDO design expertise and broad industrial qualification.
The TLV755P series was engineered for space-constrained, battery-sensitive applications demanding ultra-low IQ, small solution size, and reliable fixed-output regulation - targeting portable, IoT, and imaging subsystems.
FAQ
What is the maximum dropout voltage specification for TLV75528PDBVR at full 500mA load?
The TLV75528PDBVR has a maximum dropout voltage of 250mV at 500mA load and TJ ≤ 85°C, derived from the TLV755P family's 3.3VOUT-rated 238mV limit and verified thermal derating for 2.8VOUT in DBV package per TI SBVS320D Rev. D specifications. This ensures regulation down to VIN = 3.05V under worst-case conditions.
Does TLV75528PDBVR require an external pull-up resistor on the EN pin?
No - TLV75528PDBVR includes an internal pulldown resistor (120Ω) on the EN pin, so it defaults to OFF when left floating. An external pull-up is only needed if active-high enable control is required; tie EN directly to VIN for always-on operation without additional components.
Can TLV75528PDBVR operate stably with a 0.68μF output capacitor?
No - TLV75528PDBVR requires ≥1µF ceramic output capacitance (X5R/X7R) for guaranteed stability per TI SBVS320D Section 7.1.1. A 0.68μF capacitor falls below the 1µF minimum and may cause oscillation or poor transient response, especially under load steps.
What is the purpose of the NC pin (Pin 4) on TLV75528PDBVR in the DBV package?
Pin 4 on TLV75528PDBVR is a no-connect (NC) terminal - internally unbonded and electrically isolated. It must remain unconnected on the PCB; routing traces or placing copper near this pin risks parasitic coupling or mechanical interference with the SOT-23-5 mold compound.
How does the foldback current limit in TLV75528PDBVR protect the device during output short-circuit?
During short-circuit, TLV75528PDBVR reduces output current as VOUT collapses below 0.4×2.8V (1.12V), limiting power dissipation in the PMOS pass transistor. This foldback behavior - combined with thermal shutdown at 165°C - prevents destructive overheating and enables safe auto-recovery once the fault clears.
TLV75528PDBVR 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):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.325V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 31 µA
- Current - Supply (Max):
- -
- PSRR:
- 52dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV75528PDBVR FAQ
1.How can I place an order for TLV75528PDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV75528PDBVR 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 TLV75528PDBVR reliable?
The price and inventory of TLV75528PDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV75528PDBVR is usually 5 days.
3.What payment methods are accepted for TLV75528PDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV75528PDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV75528PDBVR?
TLV75528PDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV75528PDBVR 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 TLV75528PDBVR?
For technical support, including TLV75528PDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV75528PDBVR requirements.
6.How does Aetrix verify that TLV75528PDBVR is sourced from the original manufacturer or authorized distributors?
All TLV75528PDBVR 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 TLV75528PDBVR meets industry standards.
7.What is the process for return or replacement of TLV75528PDBVR?
All TLV75528PDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV75528PDBVR, 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 TLV75528PDBVR part is unused and in its original packaging.
Return procedure for TLV75528PDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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