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Texas Instruments TPS71719DCKR
- Part No.:
- TPS71719DCKR
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TPS71719DCKR.pdf
- Description:
- IC REG LINEAR 1.9V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS71719DCKR from Texas Instruments is a fixed-output, 1.9-V, 150-mA low-dropout linear regulator in SC-70-5 package, featuring 70 dB PSRR at 1 kHz, 30 µVRMS output noise (100 Hz–100 kHz), and 170 mV typical dropout at full load - designed for noise-sensitive analog and RF power rails in portable imaging and wireless modules.
For engineers reviewing the TPS71719DCKR datasheet, TPS71719DCKR pinout, TPS71719DCKR application, or TPS71719DCKR equivalent, key selection criteria include ultra-low noise performance with optional NR capacitor support, high-bandwidth PSRR across 100 Hz–1 MHz, sub-45 µA ground current at light load, and guaranteed stability with only 1 µF ceramic output capacitance.
Technical Context
The TPS71719DCKR uses a PMOS pass device and advanced BiCMOS process to achieve fast startup (≤160 µs with 0.01 µF NR cap), low-noise regulation via dedicated noise-reduction pin (NR), and high-loop-gain error amplifier architecture enabling stable operation down to zero load. Its UVLO threshold is 2.45 V (rising) with 150 mV hysteresis.
Unlike traditional LDOs, it maintains high PSRR (>67 dB at 100 kHz) even under low headroom conditions (VIN – VOUT = 0.25 V), and integrates thermal shutdown (160°C trip, 140°C reset) and internal current limiting (200–575 mA). The SC-70-5 package supports compact layout with minimal thermal resistance (RθJA = 279.2°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 1.9 V ±3% over load, line, temp (–40°C to 125°C) |
| Max output current | 150 mA continuous; internal current limit protects against short-circuit faults |
| Dropout voltage | 170 mV typical at 150 mA - enables operation from 2.07 V input minimum |
| PSRR | 70 dB @ 1 kHz, 67 dB @ 100 kHz, 45 dB @ 1 MHz - suppresses switching noise from upstream DC/DC converters |
| Output noise | 30 µVRMS (100 Hz–100 kHz) with CNR = 0.01 µF - critical for camera sensor and RF front-end biasing |
| Ground current | 45 µA typical at 0.1 mA load; ≤100 µA at 150 mA - extends battery life in always-on subsystems |
| Input voltage range | 2.5 V to 6.5 V - compatible with single-cell Li-ion, 3.3 V, and 5 V rails |
Pinout & Package
TPS71719DCKR is housed in a 5-pin SC-70 (DCK) package, 2.00 mm × 1.25 mm body size, with exposed pad not present. Pin 1 is IN; Pin 2 is GND; Pin 3 is EN; Pin 4 is NR (noise reduction); Pin 5 is OUT. All pins are surface-mount, lead-free, and RoHS-compliant.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.5–6.5 V; requires ≥0.1 µF local ceramic decoupling for stability |
| 2 (GND) | Power ground reference | Low-impedance return path for regulator core and feedback loop; must be connected directly to system ground plane |
| 3 (EN) | Enable control input | Active-high logic; drives regulator ON when >1.2 V (min), OFF when <0.4 V; ties to VIN if always-on operation required |
| 4 (NR) | Noise reduction terminal | Connects to 0.01 µF ceramic capacitor to reduce bandgap reference noise; enables 30 µVRMS output noise performance |
| 5 (OUT) | Regulated output | Delivers stable 1.9 V; requires ≥1 µF ceramic output capacitor (X5R/X7R) for phase margin and transient response |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low output noise | 30 µVRMS (100 Hz–100 kHz) with 0.01 µF NR capacitor - meets stringent requirements of CMOS image sensors and RF synthesizers |
| High-bandwidth PSRR | 70 dB at 1 kHz and 67 dB at 100 kHz - effectively filters ripple from switching regulators feeding mixed-signal SoCs |
| Fast startup time | ≤160 µs with 0.01 µF NR cap - supports rapid power sequencing in multi-rail systems without external delay circuits |
| Zero-load stability | Stable with no output load - eliminates need for dummy loads in standby or sleep modes of portable devices |
| Thermal protection | Auto-shutdown at 160°C junction temperature with 20°C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design |
Applications
| Camera Sensor Power | Mobile Phone RF Front-End |
|---|---|
|
Use Scenario: Powering high-resolution CMOS image sensors in smartphone rear cameras requiring ultra-clean bias voltage. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable 1.9 V to analog pixel array and column ADC circuitry. Use Value: 30 µVRMS noise ensures <1 LSB noise floor in 12-bit image data; 70 dB PSRR rejects baseband switching noise from SoC power domains. |
Use Scenario: Supplying local bias to power amplifiers and low-noise amplifiers in LTE/Wi-Fi front-end modules. IC Role / Device Role / Timing Role: Fixed-output LDO providing regulated 1.9 V rail isolated from noisy system DC/DC converters. Use Value: Maintains EVM integrity by suppressing supply-induced phase noise; 170 mV dropout enables efficient use of 2.07 V minimum input from battery sag. |
| Wearable Health Monitor Analog Signal Chain | Industrial IoT Edge Sensor Node |
|
Use Scenario: Powering precision analog front-ends (AFE) in optical heart-rate monitors with photodiode transimpedance amplifiers. IC Role / Device Role / Timing Role: Ultra-low-noise 1.9 V source for op-amp biasing and ADC reference buffers. Use Value: Sub-30 µVRMS noise avoids signal corruption in µV-level photoplethysmography (PPG) measurements; 45 µA quiescent current extends coin-cell battery life. |
Use Scenario: Regulating power for MEMS accelerometers and environmental sensors in battery-powered edge nodes operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Temperature-stable LDO ensuring consistent sensor bias across industrial ambient range. Use Value: ±3% output accuracy over –40°C to 125°C junction temperature guarantees calibrated sensor output; SC-70 package enables compact 2-layer PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, low-IQ LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL71719PDBVR | Same 1.9 V output, but WSON-6 (1.5 mm × 1.5 mm); 35 µA IQ; no NR pin; 40 µVRMS noise | Lacks noise-reduction capability; better thermal performance (RθJA = 190.5°C/W) but higher noise floor | Select when board space is constrained and PSRR >60 dB above 10 kHz is sufficient; avoid for camera sensor rails |
| MCP1703T-1902E/MB | 1.9 V fixed, SOT-23-5; 2.5 µA IQ; 60 dB PSRR @ 1 kHz; 80 µVRMS noise; 600 mV dropout | Lower quiescent current but significantly higher noise and dropout; no NR pin or fast-start circuit | Prefer for ultra-low-power always-on monitoring where noise sensitivity is secondary to battery longevity |
Compared with TPL71719PDBVR and MCP1703T-1902E/MB, the TPS71719DCKR uniquely delivers the combination of sub-30 µVRMS noise, 70 dB PSRR at 1 kHz, and 170 mV dropout in the smallest SC-70 footprint - making it irreplaceable for high-fidelity analog power in space-constrained, noise-critical applications.
Availability
TPS71719DCKR is available at Aetrix Electronics and suitable for camera sensor power, mobile RF front-end biasing, wearable health monitor analog chains, and industrial IoT edge sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPS71719DCKR 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 connectivity technologies, with decades of LDO innovation focused on power integrity and signal fidelity.
The TPS717 family was engineered specifically for noise-sensitive, battery-powered applications - delivering ultra-low noise, high PSRR, and minimal quiescent current in miniature packages for portable imaging, wireless, and precision sensing systems.
FAQ
What is the maximum input voltage rating for the TPS71719DCKR?
The TPS71719DCKR has an absolute maximum input voltage of 7 V, but its recommended operating range is 2.5 V to 6.5 V. Exceeding 6.5 V may trigger internal protection or degrade reliability. The device's UVLO circuit activates below 2.45 V (rising), ensuring clean startup only when sufficient input headroom exists for regulation. Always maintain VIN ≥ VOUT + VDO (≥2.07 V) for proper operation.
Does the TPS71719DCKR require an external noise reduction capacitor?
Yes - the TPS71719DCKR's NR pin (Pin 4) must be connected to a 0.01 µF ceramic capacitor to achieve its specified 30 µVRMS output noise. Without this capacitor, noise increases significantly (e.g., up to 95×VOUT µVRMS). The quick-start circuit charges this capacitor within 135 µs at power-up, enabling both low noise and fast startup. Use X5R/X7R dielectrics with low leakage.
Can the TPS71719DCKR operate with zero output load?
Yes - the TPS71719DCKR is explicitly designed to remain stable with no output load. Its low-current mode circuit boosts loop gain under light or zero-load conditions, preventing output voltage drift or oscillation. This eliminates the need for dummy loads in standby or sleep states, reducing system power consumption and simplifying design for battery-powered applications like wearables and IoT sensors.
What is the thermal shutdown behavior of the TPS71719DCKR?
The TPS71719DCKR shuts down when junction temperature reaches ~160°C and re-enables when temperature falls to ~140°C. This hysteresis prevents thermal cycling near the trip point. Continuous operation in thermal shutdown degrades reliability; design must ensure RθJA and ambient conditions keep TJ ≤125°C under worst-case load. For the SC-70 package, thermal relief via PCB copper area is strongly recommended.
Is the TPS71719DCKR pin-compatible with other TPS717 variants?
Yes - all TPS717x DCK (SC-70-5) variants share identical pinout: Pin 1=IN, Pin 2=GND, Pin 3=EN, Pin 4=NR, Pin 5=OUT. Output voltage is determined solely by internal trimming; no external resistors are needed. This allows drop-in replacement across 0.9 V to 5.0 V fixed-output versions (e.g., TPS71709, TPS71733) without layout changes, provided input voltage and load requirements are met.
TPS71719DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 70dB ~ 45dB (100Hz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TPS71719DCKR FAQ
1.How can I place an order for TPS71719DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS71719DCKR 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 TPS71719DCKR reliable?
The price and inventory of TPS71719DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS71719DCKR is usually 5 days.
3.What payment methods are accepted for TPS71719DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS71719DCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS71719DCKR?
TPS71719DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS71719DCKR 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 TPS71719DCKR?
For technical support, including TPS71719DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS71719DCKR requirements.
6.How does Aetrix verify that TPS71719DCKR is sourced from the original manufacturer or authorized distributors?
All TPS71719DCKR 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 TPS71719DCKR meets industry standards.
7.What is the process for return or replacement of TPS71719DCKR?
All TPS71719DCKR units undergo pre-shipment inspection (PSI). If there is an issue with TPS71719DCKR, 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 TPS71719DCKR part is unused and in its original packaging.
Return procedure for TPS71719DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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