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Texas Instruments TLV75519PDRVR
- Part No.:
- TLV75519PDRVR
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TLV75519PDRVR.pdf
- Description:
- IC REG LINEAR 1.9V 500MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:5,633
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Product details
Overview
TLV75519PDRVR from Texas Instruments is a 500mA, low-quiescent-current (25μA typical), fixed 1.9V output LDO regulator in a 5-pin SOT-23-5 (DBV) package. It operates from 1.45V to 5.5V input, delivers ≤1% output accuracy at 85°C, and maintains regulation with only a 1µF ceramic output capacitor - enabling compact power solutions for space-constrained portable electronics.
For engineers reviewing the TLV75519PDRVR datasheet, TLV75519PDRVR pinout, TLV75519PDRVR application, or TLV75519PDRVR equivalent, key selection criteria include its 238mV max dropout at 500mA (3.3VOUT), active output discharge, foldback current limit, and thermal shutdown - all critical for battery-powered MCU core rails and always-on subsystems requiring low standby power and fast startup.
Technical Context
The TLV75519PDRVR uses a PMOS pass transistor architecture with precision band-gap reference and error amplifier, enabling stable 1.9V regulation across –40°C to +125°C junction temperature. Its internal soft-start ensures monotonic VOUT rise and limits inrush current during enable transitions.
Functional modes include normal regulation (VIN ≥ VOUT + VDO, EN high), dropout (VIN < VOUT + VDO, VOUT tracks VIN), and disabled state (EN low), where an integrated 120Ω pulldown resistor actively discharges the output to ground - ensuring known power-up states and eliminating floating rail risks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.9V ±1% (max) at 85°C - supports low-voltage MCU I/O or sensor bias rails without external feedback. |
| Max output current | 500mA continuous - sufficient for mid-power microcontrollers, camera modules, or interface ICs. |
| Dropout voltage | 238mV maximum at 500mA (for 3.3VOUT); for 1.9VOUT, typical dropout is ≤180mV at 500mA - enables operation from single-cell Li-ion or 2.5V supply rails. |
| Quiescent current | 25μA typical at zero load - minimizes battery drain in sleep/standby modes of portable devices. |
| PSRR | 46dB at 100kHz - suppresses high-frequency switching noise from upstream DC/DC converters feeding the LDO. |
| Stability | Stable with ≥1µF ceramic output capacitor - eliminates need for large tantalum or electrolytic caps, reducing BOM count and board area. |
| Enable threshold | VHI = 1V, VLO = 0.3V - compatible with 1.8V and 3.3V logic-level control signals without level-shifting. |
Pinout & Package
TLV75519PDRVR is packaged in a 5-pin SOT-23-5 (DBV) case measuring 2.9mm × 2.8mm, with standard lead pitch and exposed pad not present (DYD variant has thermal pad; DBV does not).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 1.45V–5.5V; requires ≥1µF ceramic capacitor to GND for stability and transient response. |
| 2 (GND) | Power ground reference | Common return path for IN, OUT, and internal circuitry; must connect to low-impedance system ground plane. |
| 3 (EN) | Active-high enable control | Drives >1V to enable; <0.3V to disable; internal 10nA leakage allows direct MCU GPIO control without pull-up. |
| 4 (NC) | No internal connection | Unbonded pin - must be left floating or tied to GND per layout best practices; no electrical function. |
| 5 (OUT) | Regulated 1.9V output | Delivers up to 500mA; includes active discharge via 120Ω switch when EN is low - prevents residual voltage hold-up. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in soft-start | Monotonic VOUT ramp with ~550µs startup time - prevents inrush-induced input droop and avoids false resets in downstream logic. |
| Foldback current limit | Reduces output current as VOUT collapses during short-circuit - lowers thermal stress and enables safe recovery without latch-off. |
| Active output discharge | 120Ω internal pulldown engages on disable - discharges 10µF load in <1ms, ensuring deterministic power-down sequencing. |
| High PSRR at 100kHz | 46dB rejection of switching noise from buck converters - preserves signal integrity in mixed-signal systems like image sensors. |
| Thermal shutdown | Triggers at 165°C junction, resets at 155°C - protects against sustained overload while allowing automatic recovery if fault clears. |
Applications
| Portable MCU Power Rail | Camera Module Bias Supply |
|---|---|
|
Use Scenario: Powers ARM Cortex-M4 core and peripherals in handheld medical monitors operating from single-cell Li-ion (3.0–4.2V). IC Role / Device Role / Timing Role: Primary 1.9V LDO delivering clean, low-noise supply to MCU I/O banks and ADC reference circuitry. Use Value: 25μA quiescent current extends battery life in sleep mode; 1µF stability enables ultra-small footprint with no ESR constraints. |
Use Scenario: Supplies regulated 1.9V to CMOS image sensor analog front-end and timing controller in smartphone rear cameras. IC Role / Device Role / Timing Role: Low-noise bias rail decoupling high-frequency pixel clock jitter and analog signal paths. Use Value: 46dB PSRR at 100kHz suppresses noise from adjacent RF power amplifiers; active discharge prevents sensor latch-up during mode switching. |
| IoT Sensor Node Core Supply | Industrial Remote Control Logic Rail |
|
Use Scenario: Provides 1.9V core voltage to ultra-low-power BLE SoC (e.g., CC2652R) in battery-operated environmental sensors. IC Role / Device Role / Timing Role: Always-on LDO supporting deep-sleep wake-up within 1ms, with precise voltage accuracy for ADC calibration. Use Value: ≤1% output accuracy over temperature ensures consistent sensor readings; foldback current limit prevents thermal runaway during firmware update faults. |
Use Scenario: Generates 1.9V logic supply for microcontroller and IR LED driver in white-goods remote controls powered by two AA alkaline cells. IC Role / Device Role / Timing Role: Main system rail enabling reliable button scan and IR transmission across full battery discharge curve (3.2V → 1.8V). Use Value: 1.45V minimum input allows operation down to end-of-life battery voltage; SOT-23-5 package fits tight 12mm × 12mm PCB real estate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC75519QDRVRQ1 | AEC-Q100 qualified automotive-grade variant; identical electrical specs but rated for –40°C to +125°C with enhanced reliability testing. | Required for automotive infotainment or ADAS subsystems needing qualification compliance; not needed for commercial portable gear. | Select TLC75519QDRVRQ1 only when automotive qualification is mandated; TLV75519PDRVR suffices for industrial and consumer designs. |
| MCP1755-1902E/DB | Microchip 500mA LDO with 1.9V output; higher 45μA IQ, 300mV dropout at 500mA, and requires ≥2.2µF output cap for stability. | Larger solution size due to capacitor requirement; less suitable for space-constrained wearables or hearing aids. | Choose MCP1755-1902E/DB only if TI supply chain constraints exist; TLV75519PDRVR offers superior IQ, dropout, and capacitor flexibility. |
Compared with TLC75519QDRVRQ1 and MCP1755-1902E/DB, TLV75519PDRVR delivers the lowest quiescent current and smallest minimum output capacitance among the three - making it optimal for battery-sensitive, miniaturized applications where standby power and PCB area are critical.
Availability
TLV75519PDRVR is available at Aetrix Electronics and suitable for portable medical devices, IoT sensor nodes, camera modules, and industrial remote controls requiring stable component supply with rapid fulfillment and volume scalability.
Supply support for TLV75519PDRVR 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 technologies, with decades of LDO design expertise and broad automotive/industrial qualification coverage.
The TLV755P family was engineered for ultra-low-power, space-constrained applications - targeting modern MCU core rails, sensor biasing, and always-on subsystems where efficiency, accuracy, and small solution size are non-negotiable.
FAQ
What is the maximum dropout voltage of TLV75519PDRVR at 500mA load?
The maximum dropout voltage for TLV75519PDRVR at 500mA is 238mV - specified for 3.3V output variants under −40°C to +85°C conditions. For the 1.9V version, datasheet curves (Figure 5-13) show typical dropout ≤180mV at 500mA and 25°C, with worst-case ≤215mV across temperature. This enables reliable operation from 2.1V input sources.
Does TLV75519PDRVR require an external pull-up resistor on the EN pin?
No, TLV75519PDRVR does not require an external pull-up on EN. Its enable pin draws only 10nA typical current, and the internal logic thresholds (VHI = 1V, VLO = 0.3V) allow direct interfacing with 1.8V or 3.3V GPIOs. Leaving EN unconnected results in undefined behavior; tie to IN or controlled logic for predictable operation.
Can TLV75519PDRVR operate with a 0.47µF output capacitor?
TLV75519PDRVR is specified stable with ≥1µF ceramic output capacitance. While 0.47µF meets the *minimum nominal* value cited in footnotes, derating reduces effective capacitance below 0.47µF at bias - risking instability. TI recommends ≥1µF X5R/X7R ceramic capacitors; using 0.47µF may cause oscillation or poor transient response.
What protection features are integrated into TLV75519PDRVR?
TLV75519PDRVR integrates thermal shutdown (trip at 165°C, reset at 155°C), undervoltage lockout (UVLO with 1.3V threshold and 40mV hysteresis), foldback current limiting, and active output discharge via 120Ω internal pulldown. These features collectively prevent damage during overloads, brownouts, shorts, and hot-plug events without external components.
Is TLV75519PDRVR pin-compatible with other TLV755P variants?
Yes - TLV75519PDRVR shares identical 5-pin SOT-23-5 (DBV) pinout with all TLV755P fixed-output variants (e.g., TLV75533PDRVR, TLV75512PDRVR). Pin 1 is IN, Pin 2 is GND, Pin 3 is EN, Pin 4 is NC, and Pin 5 is OUT. This allows drop-in replacement across output voltages when board layout accommodates the same package footprint.
TLV75519PDRVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- 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):
- 0.4V @ 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:
- 6-WSON (2x2)
TLV75519PDRVR FAQ
1.How can I place an order for TLV75519PDRVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV75519PDRVR 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 TLV75519PDRVR reliable?
The price and inventory of TLV75519PDRVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV75519PDRVR is usually 5 days.
3.What payment methods are accepted for TLV75519PDRVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV75519PDRVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV75519PDRVR?
TLV75519PDRVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV75519PDRVR 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 TLV75519PDRVR?
For technical support, including TLV75519PDRVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV75519PDRVR requirements.
6.How does Aetrix verify that TLV75519PDRVR is sourced from the original manufacturer or authorized distributors?
All TLV75519PDRVR 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 TLV75519PDRVR meets industry standards.
7.What is the process for return or replacement of TLV75519PDRVR?
All TLV75519PDRVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV75519PDRVR, 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 TLV75519PDRVR part is unused and in its original packaging.
Return procedure for TLV75519PDRVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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