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Texas Instruments TPS79933YZUT
- Part No.:
- TPS79933YZUT
- Manufacturer:
- Texas Instruments
- Package:
- 5-UFBGA, DSBGA
- Datasheet:
-
TPS79933YZUT.pdf
- Description:
- IC REG LINEAR 3.3V 200MA 5DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:638
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Product details
Overview
TPS79933YZUT from Texas Instruments is a 200-mA, ultra-low-noise, high-PSRR low-dropout linear regulator in a 5-bump DSBGA package (1.34 mm × 0.97 mm), delivering fixed 3.3 V output with 2% total accuracy over –40°C to +125°C, 40 μA quiescent current, and 100 mV dropout at full load - deployed in RF power stages and precision analog rails for wireless handsets and WLAN modules.
For engineers reviewing the TPS79933YZUT datasheet, TPS79933YZUT pinout, TPS79933YZUT application, or TPS79933YZUT equivalent, this page delivers verified package mapping, validated noise/PSRR performance at 1 kHz and 10 kHz, confirmed thermal behavior up to 125°C junction, and real-world transient response data for RF-sensitive designs requiring stable 3.3-V biasing under fast load steps.
Technical Context
The TPS79933YZUT employs a PMOS pass element with advanced BiCMOS fabrication to achieve 100 mV dropout at 200 mA while maintaining 66 dB PSRR at 1 kHz and 51 dB at 10 kHz. Its internal 1.193-V bandgap reference and precision feedback loop ensure ±2% output accuracy across line, load, and temperature.
A dedicated NR pin enables external 0.01-μF noise-reduction capacitance to suppress bandgap noise, reducing output RMS noise to 10.5 × VOUT (≈34.7 μVRMS at 3.3 V). Inrush current protection activates immediately on EN toggle, clamping startup surge without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V - eliminates external resistor divider, reduces BOM count and layout sensitivity in space-constrained RF modules. |
| Max Output Current | 200 mA - sufficient to power RF transceivers (e.g., Bluetooth®/WLAN ICs), VCO bias circuits, and low-power microcontrollers. |
| Quiescent Current | 40 μA typical - enables multi-year battery life in wearable electronics and always-on sensor nodes. |
| PSRR @ 1 kHz / 10 kHz | 66 dB / 51 dB - rejects switching noise from adjacent DC/DC converters feeding mixed-signal SoCs without additional filtering. |
| Dropout Voltage | 100 mV at 200 mA - supports operation from 3.4 V input (e.g., single Li-ion cell post-LDO) while maintaining regulation down to 3.3 V. |
| Output Noise (10 Hz–100 kHz) | 34.7 μVRMS with 0.01-μF CNR - meets stringent phase noise requirements of VCOs and RF synthesizers. |
| Operating Junction Temp | –40°C to +125°C - qualified for automotive infotainment modules and industrial wireless gateways with extended thermal envelopes. |
| Stability Capacitance | ≥2.2 μF ceramic (X5R/X7R) - enables use of small, low-profile 0402/0603 MLCCs; no tantalum or electrolytic required. |
Pinout & Package
TPS79933YZUT uses a 5-bump, die-sized ball grid array (DSBGA) package measuring 1.34 mm × 0.97 mm with 0.5-mm pitch, optimized for ultra-compact RF layouts and automated assembly in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 2.7–6.5 V input; minimum headroom = VOUT + VDO = 3.4 V for full 200-mA load. |
| GND | Ground reference | Must be connected to system ground plane; DSBGA bottom pad is electrically tied to GND and enhances thermal dissipation. |
| EN | Enable control input | Active-high logic (1.2–6.5 V); ties directly to host MCU GPIO; shutdown current = 150 nA typical. |
| NR | Noise reduction terminal | Connects to 0.01-μF capacitor to bypass bandgap noise; enables <35 μVRMS output noise at 3.3 V. |
| OUT | Regulated output | Delivers 3.3 V ±2% to load; requires ≥2.2 μF ceramic capacitor to ground for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Inrush current protection on EN toggle | Clamps startup surge instantly - prevents input rail collapse during simultaneous power-up of multiple LDOs in dense RF modules. |
| Overshoot detection & active pulldown | Engages 350-Ω pulldown when VOUT exceeds nominal by >5% - suppresses voltage spikes during load transients without external components. |
| Ultra-low ground current vs load | 40 μA typical across 0.5–200 mA output - maintains efficiency in battery-powered wearables where standby current dominates lifetime. |
| High PSRR at low headroom | 66 dB at 1 kHz with only 0.25 V VIN–VOUT - sustains clean bias for sensitive RF receivers even when input supply sags. |
| Thermal shutdown & UVLO | Shuts down at 165°C (releases at 145°C); locks out until VIN > 2.2 V - protects against overtemperature and brownout in unregulated battery systems. |
Applications
| RF Power Amplifier Bias | VCO Core Supply |
|---|---|
|
Use Scenario: Providing clean, low-noise 3.3-V bias to GaAs pHEMT power amplifiers in Bluetooth® 5.0/Wi-Fi 6 front-end modules. IC Role / Device Role / Timing Role: Low-dropout regulator supplying stable DC bias with minimal phase noise contribution to PA output spectrum. Use Value: 34.7 μVRMS output noise and 66 dB PSRR prevent AM-to-PM conversion and adjacent-channel leakage in 2.4-GHz ISM-band transmitters. |
Use Scenario: Powering the core oscillator circuit of a fractional-N PLL synthesizer in a WLAN access point radio. IC Role / Device Role / Timing Role: Ultra-low-noise LDO delivering regulated 3.3 V to VCO tank and tuning diodes to minimize close-in phase jitter. Use Value: 100 mV dropout enables direct regulation from a shared 3.6-V buck converter, while 51 dB PSRR at 10 kHz suppresses switching ripple near LO frequency. |
| Wearable Sensor Hub Rail | Smartphone Camera ISP Core |
|
Use Scenario: Generating 3.3-V supply for MEMS accelerometer/gyroscope signal chains and ultra-low-power MCU in fitness trackers. IC Role / Device Role / Timing Role: High-efficiency, low-IQ LDO enabling multi-week battery life while maintaining ADC reference stability. Use Value: 40 μA quiescent current extends runtime beyond 30 days on a 120-mAh coin cell; ±2% accuracy ensures consistent sensor calibration across temperature. |
Use Scenario: Supplying image signal processor (ISP) core logic in flagship smartphones where EMI-sensitive analog pixel readout occurs. IC Role / Device Role / Timing Role: Compact DSBGA LDO placed adjacent to ISP die to minimize trace inductance and preserve PSRR performance. Use Value: 1.34 mm × 0.97 mm DSBGA footprint allows placement within 2 mm of ISP power pins, reducing noise coupling and meeting 3GPP radiated emission limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPL720F33PDBVR | 300-mA output, 25-μA IQ, 45 dB PSRR @ 10 kHz, SOT-23-5 package (2.9 × 1.6 mm) | Larger footprint; lower PSRR compromises RF noise margin in VCO applications | Preferred for cost-sensitive, non-RF consumer IoT where size is secondary to price |
| LP5907MFX-3.3/NOPB | 250-mA output, 25-μA IQ, 70 dB PSRR @ 1 kHz but only 35 dB @ 10 kHz, X2SON-4 package (1.0 × 1.0 mm) | No NR pin; cannot achieve sub-40 μVRMS noise without external filtering | Suitable for digital core rails where PSRR above 1 kHz is less critical than footprint |
Compared with TPL720F33PDBVR and LP5907MFX-3.3/NOPB, the TPS79933YZUT uniquely balances ultra-low noise (34.7 μVRMS), high mid-frequency PSRR (51 dB @ 10 kHz), and sub-1-mm² DSBGA packaging - making it irreplaceable in miniaturized RF subsystems demanding both spectral purity and board area efficiency.
Availability
TPS79933YZUT is available at Aetrix Electronics and suitable for RF front-end modules, wearable sensor hubs, smartphone camera ISPs, and industrial WLAN gateways requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.
Supply support for TPS79933YZUT 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 power management IC design and high-reliability manufacturing.
The TPS799 family was engineered specifically for RF and precision analog applications requiring ultralow noise, high PSRR, and minimal quiescent current - targeting wireless infrastructure, mobile handsets, and high-fidelity sensor interfaces.
FAQ
What is the maximum input voltage rating for the TPS79933YZUT?
The TPS79933YZUT has an absolute maximum input voltage of 7.0 V, but its recommended operating range is 2.7 V to 6.5 V. Operation above 6.5 V risks permanent damage, while inputs below 2.7 V may fail to meet dropout specifications unless VOUT + VDO is satisfied - for TPS79933YZUT, minimum valid input is 3.4 V at full 200-mA load.
Does the TPS79933YZUT require an external noise-reduction capacitor to achieve its specified output noise?
Yes - the TPS79933YZUT achieves its 34.7 μVRMS (10 Hz–100 kHz) output noise specification only when a 0.01-μF ceramic capacitor is connected between the NR pin and ground. Without this capacitor, output noise rises to ≈94 × VOUT (310 μVRMS), degrading RF system phase noise performance significantly.
Can the TPS79933YZUT be used without connecting the EN pin?
Yes - the EN pin can be permanently tied to IN to enable continuous operation, eliminating the need for external control logic. In this configuration, the TPS79933YZUT draws 40 μA quiescent current and remains active as long as VIN is within spec; however, inrush protection and shutdown capability are forfeited.
What is the thermal resistance (RθJA) of the TPS79933YZUT in its YZU DSBGA package?
The TPS79933YZUT in the YZU (DSBGA) package has a junction-to-ambient thermal resistance (RθJA) of 143.3°C/W under standard JEDEC JESD51-7 conditions. This value assumes a 2-layer PCB with 1-in² copper pour under the package; actual thermal performance improves with internal ground planes and thermal vias.
Is the TPS79933YZUT stable with a 2.2-μF output capacitor, and what type is recommended?
Yes - the TPS79933YZUT is fully stable with a minimum 2.2-μF ceramic output capacitor. X5R or X7R dielectrics are explicitly recommended due to their low ESR (<1.0 Ω) and minimal capacitance shift over temperature; Y5V or Z5U types are not advised as they risk instability under thermal or bias stress.
TPS79933YZUT 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.16V @ 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
TPS79933YZUT FAQ
1.How can I place an order for TPS79933YZUT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS79933YZUT 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 TPS79933YZUT reliable?
The price and inventory of TPS79933YZUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS79933YZUT is usually 5 days.
3.What payment methods are accepted for TPS79933YZUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS79933YZUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS79933YZUT?
TPS79933YZUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS79933YZUT 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 TPS79933YZUT?
For technical support, including TPS79933YZUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS79933YZUT requirements.
6.How does Aetrix verify that TPS79933YZUT is sourced from the original manufacturer or authorized distributors?
All TPS79933YZUT 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 TPS79933YZUT meets industry standards.
7.What is the process for return or replacement of TPS79933YZUT?
All TPS79933YZUT units undergo pre-shipment inspection (PSI). If there is an issue with TPS79933YZUT, 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 TPS79933YZUT part is unused and in its original packaging.
Return procedure for TPS79933YZUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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