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Texas Instruments TLV75719PDBVR
- Part No.:
- TLV75719PDBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV75719PDBVR.pdf
- Description:
- IC REG LINEAR 1.9V 1A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,545
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Product details
Overview
TLV75719PDBVR from Texas Instruments is a 1A, low-quiescent-current (25μA typical), fixed 1.9V output LDO regulator in SOT-23-5 (DBV) package. It operates from 1.45V to 5.5V input, delivers ±1% output accuracy, supports 1µF ceramic output capacitance, and features built-in soft-start, active output discharge, and foldback current limiting - ideal for powering MCU core rails in portable and battery-powered systems.
For engineers reviewing the TLV75719PDBVR datasheet, TLV75719PDBVR pinout, TLV75719PDBVR application, or TLV75719PDBVR equivalent, key selection criteria include dropout voltage at 1A (max 425mV @ 3.3VOUT, scaled per VOUT), thermal resistance (RθJA = 100.8°C/W for DBV), EN pin logic thresholds (VHI = 1V, VLO = 0.3V), and stability with minimal 1µF COUT.
Technical Context
The TLV75719PDBVR uses a PMOS pass transistor architecture enabling ultra-low dropout and high PSRR (46dB @ 100kHz). Its internal bandgap reference and error amplifier deliver 1% output accuracy across –40°C to +125°C, while integrated UVLO (1.21–1.44V) and thermal shutdown (165°C trip) ensure robust operation under brownout and overload conditions.
Functional modes include normal regulation (VIN ≥ VOUT + VDO), dropout (VIN < VOUT + VDO, output tracks input), and disabled state (EN < VLO), where an internal 120Ω pulldown actively discharges the output. The device's foldback current limit reduces thermal stress during short-circuit events by scaling current as VOUT collapses below 0.4×VOUT(NOM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.9V - matches common I/O or low-power MCU core supply requirements without external feedback. |
| Max output current | 1A - sufficient for modern ARM Cortex-M microcontrollers and sensor hubs under peak load. |
| Quiescent current | 25μA typical - enables multi-year battery life in always-on IoT endpoints and remote controls. |
| Dropout voltage | ≤425mV at 1A (for 3.3VOUT); for 1.9VOUT, max ~300mV - allows operation from single-cell Li-ion (3.0V min) or two-cell alkaline (2.4V min) with margin. |
| Output accuracy | ±1% max (≥1V output) - ensures reliable logic-level compliance for 1.8V interfaces and FPGA I/O banks. |
| PSRR | 46dB @ 100kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input. |
| Stability | With ≥1µF X5R/X7R ceramic capacitor - eliminates need for bulky tantalum or electrolytic caps, reducing board area and cost. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9mm × 2.8mm footprint, no thermal pad, standard lead pitch. Suitable for space-constrained PCB layouts with manual or automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input power supply connection | Accepts 1.45–5.5V; requires ≥1µF ceramic capacitor to GND for stability and transient response. |
| 2 - GND | Power ground reference | Primary return path for input/output currents; must connect to low-impedance system ground plane. |
| 3 - EN | Enable control input | Active-high logic: >1V enables regulation; <0.3V disables and activates 120Ω output pulldown. |
| 4 - NC | No internal connection | Unbonded pin - leave floating or optionally tie to GND for mechanical stability; no electrical function. |
| 5 - OUT | Regulated output voltage | Delivers stable 1.9V ±1%; requires ≥1µF ceramic capacitor to GND for loop stability and load transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in soft-start | Monotonic VOUT rise with ~550μs startup time - prevents inrush current and input voltage droop during power-up. |
| Active output discharge | Internal 120Ω switch pulls OUT to GND when disabled - ensures known low-voltage state for downstream logic reset sequencing. |
| Foldback current limit | Reduces output current as VOUT drops below 0.4×1.9V - limits power dissipation and junction temperature during shorts. |
| High PSRR | 46dB @ 100kHz - maintains clean 1.9V rail despite noisy DC/DC input sources like buck converters. |
| Thermal shutdown | 165°C trip / 155°C reset hysteresis - protects against sustained overloads without requiring external thermal monitoring. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Powering ultra-low-power BLE-enabled temperature/humidity sensors in handheld diagnostic tools. IC Role / Device Role / Timing Role: Primary 1.9V core supply for ARM Cortex-M0+ MCU and analog front-end ADC. Use Value: 25μA IQ extends coin-cell battery life beyond 3 years; 1µF COUT minimizes BOM count and PCB area. |
Use Scenario: Providing isolated 1.9V bias for digital isolator side-rail logic in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Local post-regulator for noise-sensitive digital interface circuitry. Use Value: 46dB PSRR rejects switching noise from 24V-to-5V primary DC/DC, preventing data corruption on SPI/I²C buses. |
| Smart Home Remote Controls | Automotive Cabin Camera Modules |
|
Use Scenario: Supplying 1.9V to RF SoC and touch controller in energy-harvesting IR/RF remotes. IC Role / Device Role / Timing Role: Always-on LDO maintaining MCU sleep-state voltage during button wake events. Use Value: ±1% accuracy guarantees consistent wake-up timing and RF transmit power calibration across temperature. |
Use Scenario: Biasing image signal processor (ISP) core logic in rear-view camera ECU operating from 12V battery. IC Role / Device Role / Timing Role: Secondary LDO delivering clean 1.9V from intermediate 3.3V rail. Use Value: Foldback current limit prevents thermal runaway during ISP firmware update-induced current surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC75719DBVR | Same 1.9V fixed output, but higher IQ (65μA typ) and no active discharge; RθJA = 110°C/W (DBV). | Lacks monotonic start-up and output pulldown - unsuitable for systems requiring controlled power-down sequencing. | Choose only if lowest cost is critical and soft-start/discharge are not required. |
| TPS7A0519PDQNR | Lower IQ (25nA typ), but 0.2A max output; WSON-6 package; no foldback current limit. | Insufficient current for MCU cores above 200MHz; lacks short-circuit thermal protection for continuous fault conditions. | Select for ultra-low-power sensor nodes with sub-100mA loads - not for 1A MCU applications. |
Compared with TLC75719DBVR and TPS7A0519PDQNR, TLV75719PDBVR uniquely balances 1A capability, 25μA IQ, active discharge, and foldback protection in a compact SOT-23-5 - making it optimal for battery-powered MCUs needing both performance and reliability.
Availability
TLV75719PDBVR is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home remote controls, and automotive cabin camera modules requiring stable component supply and long-term production continuity.
Supply support for TLV75719PDBVR 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 decades of leadership in power management ICs.
The TLV757P series was designed to address demand for ultra-small, low-IQ LDOs supporting modern low-voltage MCU cores (0.6–5V) in space- and power-constrained applications like wearables and edge sensors.
FAQ
What is the maximum dropout voltage of TLV75719PDBVR at 1A load?
The TLV75719PDBVR has a maximum dropout voltage of 425mV at 1A load for 3.3V output. For its fixed 1.9V output, the datasheet specifies ≤300mV (typical) and ≤450mV (max) under –40°C to +125°C, based on DYD-package data extrapolated to DBV. This enables reliable operation from 2.35V minimum input across temperature.
Does TLV75719PDBVR require an external pull-up resistor on the EN pin?
No, TLV75719PDBVR does not require an external pull-up on EN. It features an internal pull-down (120Ω) but no internal pull-up. To ensure reliable enable, drive EN directly from a GPIO or logic rail ≥1V; if left unconnected, the device remains off due to the internal pulldown.
Can TLV75719PDBVR operate with less than 1µF output capacitance?
No - TLV75719PDBVR requires ≥1µF ceramic output capacitance for guaranteed stability per TI SBVS322C. Using <1µF risks oscillation or poor load transient response. The 0.47µF minimum cited elsewhere applies only after derating; nominal design must use ≥1µF X5R/X7R.
What happens to the output of TLV75719PDBVR when the EN pin is pulled low?
When EN is pulled below 0.3V, TLV75719PDBVR enters shutdown mode and activates an internal 120Ω pulldown switch between OUT and GND. This actively discharges the output capacitor, ensuring rapid, predictable voltage decay - critical for safe reset sequencing in microcontroller systems.
Is TLV75719PDBVR compatible with ceramic capacitors having high DC bias derating?
Yes - TLV75719PDBVR is explicitly characterized for stability with X5R and X7R ceramics. However, due to DC bias effects, select capacitors rated ≥2.2µF nominal (to ensure ≥1µF effective capacitance at 1.9V bias), as specified in Section 7.1.1 of the datasheet.
TLV75719PDBVR 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):
- 1.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.8V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- 40 µA
- PSRR:
- 52dB (1kHz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Current Limit, Thermal Shutdown, UVLO
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV75719PDBVR FAQ
1.How can I place an order for TLV75719PDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV75719PDBVR 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 TLV75719PDBVR reliable?
The price and inventory of TLV75719PDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV75719PDBVR is usually 5 days.
3.What payment methods are accepted for TLV75719PDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV75719PDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV75719PDBVR?
TLV75719PDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV75719PDBVR 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 TLV75719PDBVR?
For technical support, including TLV75719PDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV75719PDBVR requirements.
6.How does Aetrix verify that TLV75719PDBVR is sourced from the original manufacturer or authorized distributors?
All TLV75719PDBVR 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 TLV75719PDBVR meets industry standards.
7.What is the process for return or replacement of TLV75719PDBVR?
All TLV75719PDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV75719PDBVR, 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 TLV75719PDBVR part is unused and in its original packaging.
Return procedure for TLV75719PDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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