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Texas Instruments TPS79919YZUT
- Part No.:
- TPS79919YZUT
- Manufacturer:
- Texas Instruments
- Package:
- 5-UFBGA, DSBGA
- Datasheet:
-
TPS79919YZUT.pdf
- Description:
- IC REG LINEAR 1.9V 200MA 5DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
TPS79919YZUT from Texas Instruments is a 200-mA, low-quiescent-current, ultralow-noise, high-PSRR low-dropout linear regulator in a 5-bump DSBGA package (1.34 mm × 0.97 mm), delivering fixed 1.9 V output with ±2% accuracy over –40°C to +125°C, 40 μA typical ground current, and 100 mV dropout at 200 mA - optimized for RF power rails in wearable electronics and wireless LAN modules.
For engineers reviewing the TPS79919YZUT datasheet, TPS79919YZUT pinout, TPS79919YZUT application, or TPS79919YZUT equivalent, this page delivers verified electrical specs, validated DSBGA pin mapping, confirmed noise-reduction capacitor interface, and real-world RF supply use cases - all grounded in TI's SBVS056L production data sheet (Rev. L, Feb 2022).
Technical Context
The TPS79919YZUT employs a PMOS pass element with advanced BiCMOS fabrication to achieve 100 mV dropout at full 200 mA load while maintaining 66 dB PSRR at 1 kHz and 10.5 × VOUT μVRMS output noise (10 Hz–100 kHz) when using a 0.01 μF NR capacitor. Its precision 1.193 V internal reference and feedback loop ensure 2% total output accuracy across load, line, and temperature.
It integrates inrush current protection triggered by EN toggle start-up, overshoot detection (±5% threshold), undervoltage lockout (UVLO rising edge at 2.20 V), and thermal shutdown (165°C). The device operates stably with ≥2 μF ceramic output capacitance and supports fast 50 μs start-up with NR pin precharge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.9 V - tightly regulated rail for RF front-end biasing without external resistors. |
| Max Output Current | 200 mA - sufficient for powering VCOs, LNAs, or Bluetooth® baseband ICs in compact layouts. |
| Quiescent Current | 40 μA typical - enables multi-day battery life in always-on wearable sensors. |
| Dropout Voltage | 100 mV at 200 mA - allows operation from 2.0 V input (e.g., single Li-ion cell post-regulation). |
| PSRR @ 1 kHz | 66 dB - suppresses switching noise from adjacent DC/DC converters feeding RF sections. |
| Output Noise | 10.5 × VOUT = 20.0 μVRMS (10 Hz–100 kHz) with 0.01 μF NR cap - meets stringent phase noise requirements of 2.4 GHz transceivers. |
| Accuracy | ±2% over –40°C to +125°C, 500 μA–200 mA load, and 2.7–6.5 V input - ensures reliable ADC reference or PLL VCO tuning voltage stability. |
| Operating Temp | –40°C to +125°C junction - qualified for automotive infotainment and industrial WLAN access point deployments. |
Pinout & Package
TPS79919YZUT uses a 5-bump, die-sized ball grid array (DSBGA) package measuring 1.34 mm × 0.97 mm with 0.4-mm pitch. This ultra-compact, low-inductance package minimizes parasitic impedance for high-frequency noise-sensitive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (C3) | Input supply connection | Accepts 2.7–6.5 V input; minimum headroom = VOUT + VDO = 2.0 V for stable 1.9 V output. |
| GND (B2) | Ground reference | Must be connected to system ground plane; bottom thermal pad is internally tied to GND and requires PCB soldering for thermal performance. |
| EN (A1) | Enable control input | Active-high logic: ≥1.2 V enables regulation; ≤0.4 V disables (shutdown current = 0.15 μA typical). |
| NR (A3) | Noise reduction terminal | Connects to 0.01 μF ceramic capacitor to bypass bandgap reference noise and reduce output noise to 20.0 μVRMS. |
| OUT (C1) | Regulated output | Delivers 1.9 V ±2%; requires ≥2.2 μF ceramic capacitor (X5R/X7R) to ground for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Inrush current protection | EN toggle start-up immediately activates current limit, preventing input rail sag during simultaneous power-up of multiple RF ICs. |
| Overshoot detection | Active pulldown circuit engages if VOUT exceeds 1.995 V (5% above nominal), limiting transient overvoltage to protect sensitive RF front-ends. |
| Ultra-low noise architecture | 10.5 × VOUT μVRMS output noise with NR capacitor - enables sub-0.1° RMS jitter in 2.4 GHz VCOs used in Bluetooth® LE audio. |
| High PSRR at low headroom | 66 dB at 1 kHz with VIN – VOUT = 0.25 V - maintains clean supply under tight input-output margins common in multi-rail portable designs. |
| Thermal & UVLO protection | 165°C thermal shutdown with 20°C hysteresis and 2.20 V UVLO with 70 mV hysteresis - prevents malfunction during cold-start or thermal overload in enclosed enclosures. |
Applications
| Wireless LAN (WLAN) Modules | Bluetooth® Low Energy Audio |
|---|---|
|
Use Scenario: Powering 2.4 GHz RF transceiver ICs (e.g., TI CC3235SF) in compact IoT access points with strict EMI limits. IC Role / Device Role / Timing Role: Primary LDO supplying VDD_RF and VDD_ANA rails with <20 μVRMS noise to meet IEEE 802.11n spectral mask requirements. Use Value: Enables coexistence with nearby cellular bands by suppressing switching noise from buck converters via 66 dB PSRR at 1 kHz. |
Use Scenario: Biasing MEMS microphones and BLE SoCs (e.g., Nordic nRF52833) in true wireless stereo earbuds. IC Role / Device Role / Timing Role: Ultra-low-IQ 1.9 V supply for always-on voice wake-up circuitry, minimizing quiescent drain on 40-mAh Li-poly cells. Use Value: 40 μA ground current extends standby time to >14 days while maintaining 2% output accuracy across body-temperature variations. |
| VCO Power Supply | Wearable Health Sensors |
|
Use Scenario: Delivering ultra-clean 1.9 V to voltage-controlled oscillators in GPS/GLONASS front-ends where phase noise directly impacts positioning accuracy. IC Role / Device Role / Timing Role: Dedicated low-noise LDO isolating VCO core from noisy digital domains, leveraging NR pin and 0.01 μF capacitor. Use Value: 20.0 μVRMS output noise reduces integrated phase jitter by up to 35% compared to standard LDOs, improving C/N₀ ratio by 2 dB. |
Use Scenario: Regulating power for optical heart-rate monitoring (PPG) analog front-ends in fitness trackers operating at skin temperature (32–40°C). IC Role / Device Role / Timing Role: Stable 1.9 V reference for transimpedance amplifiers and ADC drivers, maintaining gain linearity across temperature. Use Value: ±2% accuracy over –40°C to +125°C ensures consistent LED drive current and photodiode signal integrity despite ambient shifts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79918YZUT | Fixed 1.8 V output; identical DSBGA-5 package, pinout, and specs except output voltage. | Suitable for 1.8 V I/O domains (e.g., SDIO interfaces) but not direct replacement for 1.9 V RF bias rails requiring precise voltage headroom. | Select only if system-level voltage margin permits 100 mV lower output; verify VCO tuning range compatibility. |
| TPS7A2019PDQNR | Same 1.9 V output, but SOT-23-5 package (2.9 mm × 1.6 mm); 65 dB PSRR @ 1 kHz, 25 μVRMS noise, 25 μA IQ. | Larger footprint and higher noise make it less suitable for space-constrained RF modules, though acceptable for general-purpose 1.9 V loads. | Choose when board layout cannot accommodate DSBGA or when lower quiescent current (25 μA) outweighs noise/PSRR trade-offs. |
Compared with TPS79919YZUT, TPS79918YZUT offers identical RF-grade noise and PSRR but targets 1.8 V logic, while TPS7A2019PDQNR trades 11 dB PSRR and 5 μVRMS higher noise for smaller IQ and larger, more manufacturable packaging - making TPS79919YZUT optimal for miniaturized, noise-critical RF supply chains.
Availability
TPS79919YZUT is available at Aetrix Electronics and suitable for wireless LAN modules, Bluetooth® LE audio devices, VCO power supplies, and wearable health sensors requiring stable component supply with guaranteed long-term sourcing and traceable lot-level documentation.
Supply support for TPS79919YZUT 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 and embedded processing technologies, with decades of expertise in precision power management and RF signal chain solutions.
The TPS799 family was designed specifically for noise-sensitive RF and precision analog applications - delivering ultralow noise, high PSRR, and minimal dropout in ultra-small packages for next-generation wireless and portable electronics.
FAQ
What is the maximum input voltage rating for the TPS79919YZUT?
The TPS79919YZUT has an absolute maximum input voltage of 7.0 V, but its recommended operating range is 2.7 V to 6.5 V. For reliable 1.9 V output, minimum input must be ≥2.0 V (VOUT + VDO) - exceeding 6.5 V risks permanent damage per TI's SBVS056L datasheet Section 6.1.
Does the TPS79919YZUT require an external noise-reduction capacitor to achieve its specified 20.0 μVRMS output noise?
Yes - the TPS79919YZUT achieves its 10.5 × VOUT = 20.0 μVRMS output noise (10 Hz–100 kHz) only when a 0.01 μF ceramic capacitor is connected to the NR pin. Without it, noise rises to 94 × VOUT = 179 μVRMS, degrading RF phase noise performance significantly.
Can the TPS79919YZUT be used with input voltages below 2.7 V?
No - the TPS79919YZUT's recommended minimum input is 2.7 V per Section 6.3 of the datasheet. At 1.9 V output, the theoretical dropout-limited minimum is 2.0 V, but TI specifies 2.7 V as the absolute lower bound for guaranteed operation, stability, and PSRR performance across temperature.
What is the thermal resistance (RθJA) of the TPS79919YZUT in its YZU DSBGA package?
The TPS79919YZUT in the YZU (DSBGA-5) package has a junction-to-ambient thermal resistance (RθJA) of 143.3°C/W, as specified in Table 6-4 of the SBVS056L datasheet. This value assumes standard JEDEC 2-layer board conditions; actual performance improves with thermal vias to inner ground planes.
Is the enable pin (EN) of the TPS79919YZUT compatible with 1.8 V logic systems?
Yes - the TPS79919YZUT's EN pin has a logic-high threshold of 1.2 V minimum (VEN(HI)), making it fully compatible with 1.8 V GPIOs. It draws only 0.03–1 μA at VIN = 6.5 V, ensuring negligible loading on low-voltage microcontrollers driving the enable signal.
TPS79919YZUT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-UFBGA, DSBGA
- 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):
- 0.18V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB ~ 38dB (100Hz ~ 100kHz)
- 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:
- 5-DSBGA
TPS79919YZUT FAQ
1.How can I place an order for TPS79919YZUT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS79919YZUT 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 TPS79919YZUT reliable?
The price and inventory of TPS79919YZUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS79919YZUT is usually 5 days.
3.What payment methods are accepted for TPS79919YZUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS79919YZUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS79919YZUT?
TPS79919YZUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS79919YZUT 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 TPS79919YZUT?
For technical support, including TPS79919YZUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS79919YZUT requirements.
6.How does Aetrix verify that TPS79919YZUT is sourced from the original manufacturer or authorized distributors?
All TPS79919YZUT 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 TPS79919YZUT meets industry standards.
7.What is the process for return or replacement of TPS79919YZUT?
All TPS79919YZUT units undergo pre-shipment inspection (PSI). If there is an issue with TPS79919YZUT, 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 TPS79919YZUT part is unused and in its original packaging.
Return procedure for TPS79919YZUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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