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Texas Instruments TPS79912DRVTG4
- Part No.:
- TPS79912DRVTG4
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS79912DRVTG4.pdf
- Description:
- IC REG LINEAR 1.2V 200MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,214
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Product details
Overview
TPS79912DRVTG4 from Texas Instruments is a 200-mA, low-quiescent-current (40 μA), ultralow-noise (10.5 × VOUT μVRMS), high-PSRR (66 dB at 1 kHz) low-dropout linear regulator with fixed 1.2-V output, EN control, and inrush current protection. It delivers stable 1.2 V to noise-sensitive RF blocks such as VCOs and WLAN front-ends under 2.7–6.5 V input.
For engineers reviewing the TPS79912DRVTG4 datasheet, TPS79912DRVTG4 pinout, TPS79912DRVTG4 application, or TPS79912DRVTG4 equivalent, key selection criteria include dropout voltage (100 mV at 200 mA), thermal shutdown (165°C), ±2% total output accuracy over load/line/temperature, and compatibility with 2.2-μF ceramic output capacitors.
Technical Context
The TPS79912DRVTG4 employs a PMOS pass element with integrated overshoot detection and active pulldown (350-Ω effective) to suppress >5% output transients during enable or load steps. Its high-gain error amplifier enables 66 dB PSRR at 1 kHz while maintaining 40 μA quiescent current.
It features a dedicated NR pin for external 0.01-μF noise-reduction capacitor bypassing of the internal bandgap reference, reducing output noise to 10.5 × VOUT μVRMS; EN toggling activates immediate current-limit protection to clamp inrush during startup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V; meets tight tolerance requirements for RF bias rails and precision analog circuitry. |
| Max Output Current | 200 mA; supports moderate-power RF ICs and mixed-signal SoCs without thermal derating at TJ ≤ 125°C. |
| Dropout Voltage | 100 mV at 200 mA; enables operation with only 1.3-V input for 1.2-V output, critical for battery-powered wearables. |
| Quiescent Current | 40 μA typical; extends battery life in always-on sensor nodes and Bluetooth® peripherals. |
| PSRR @ 1 kHz | 66 dB; rejects switching noise from adjacent DC/DC converters feeding shared input rails. |
| Output Noise | 10.5 × VOUT μVRMS (12.6 μVRMS); ensures clean supply for VCO phase noise and ADC SNR performance. |
| Total Accuracy | ±2% over load, line, and temperature (–40°C to +125°C); eliminates need for post-regulation trimming in production. |
| Stable Capacitance | 2.2 μF ceramic (X5R/X7R); enables compact, low-BOM-count designs without tantalum or polymer alternatives. |
Pinout & Package
TPS79912DRVTG4 is packaged in a 6-pin WSON (DRV) with 2.00 mm × 2.00 mm body size and exposed thermal pad. The package supports high thermal efficiency (RθJA = 74.2°C/W) and is compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input supply connection | Accepts 2.7–6.5 V; minimum headroom = VOUT + VDO (1.3 V for 1.2-V output). |
| GND | Ground reference and thermal pad | Must be soldered to PCB ground plane; thermal pad improves power dissipation and EMI performance. |
| EN | Enable control input | Active-high TTL/CMOS-compatible; drives high (>1.2 V) to enable, low (<0.4 V) to shut down (150 nA ISHDN). |
| NR | Noise reduction terminal | Connects to 0.01-μF capacitor to bypass bandgap noise; reduces output noise by >8× vs. no CNR. |
| OUT | Regulated output | Delivers 1.2 V ±2%; requires ≥2.2-μF ceramic capacitor to ground for stability and transient response. |
| N/C | No-connect terminal | Not internally bonded; must remain unconnected or tied to GND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Inrush current protection | Immediate current limiting on EN toggle start-up prevents input rail collapse during simultaneous power-up of multiple LDOs. |
| Overshoot detection & pulldown | Active 350-Ω pulldown engages if VOUT exceeds nominal by >5%, suppressing transient spikes in RF bias lines. |
| Ultralow noise with NR pin | 0.01-μF CNR reduces integrated output noise to 12.6 μVRMS, enabling sub-0.1° RMS jitter in 1.2-V VCO supplies. |
| High PSRR at low headroom | Maintains 66 dB rejection at 1 kHz even with VIN – VOUT = 0.25 V, critical for post-DC/DC filtering in dense layouts. |
| Thermal & UVLO protection | Shuts down at 165°C junction temp and locks out until VIN rises above 2.2 V (70-mV hysteresis), preventing brownout instability. |
Applications
| RF Power Amplifier Bias | VCO Core Supply |
|---|---|
Use Scenario: Supplies clean 1.2-V bias to GaAs or SiGe PAs in 5G mmWave front-ends where supply ripple directly modulates output spectrum. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO providing regulated core voltage independent of noisy switched-mode power rails. Use Value: 12.6 μVRMS noise and 66 dB PSRR prevent AM-to-PM conversion and adjacent-channel leakage in PA stages. | Use Scenario: Powers oscillator core in Bluetooth® 5.0 transceivers requiring ultra-stable voltage to minimize phase noise and frequency drift. IC Role / Device Role / Timing Role: Fixed-output LDO delivering precise 1.2 V with ±2% accuracy across –40°C to +125°C for VCO tuning stability. Use Value: 100-mV dropout enables operation from single-cell Li-ion (3.0–4.2 V) via intermediate buck stage, preserving battery runtime. |
| Wearable Sensor Hub Rail | Low-Power MCU Core Supply |
Use Scenario: Powers always-on motion sensor fusion hub in smartwatches, where microamp-level quiescent current dictates multi-week battery life. IC Role / Device Role / Timing Role: Enable-controlled LDO supplying 1.2 V to ASIC logic and ADCs during sleep mode with 150-nA shutdown current. Use Value: 40-μA operating IQ and fast 50-μs startup allow duty-cycled sensing without compromising responsiveness or energy budget. | Use Scenario: Delivers 1.2-V core voltage to ARM Cortex-M4 microcontrollers in industrial edge nodes requiring guaranteed operation up to +125°C. IC Role / Device Role / Timing Role: Thermally robust LDO with 165°C thermal shutdown protecting MCU during extended high-load computation cycles. Use Value: RθJA = 74.2°C/W and full –40°C to +125°C specification ensure reliable core regulation without derating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS79912DRVR | Same silicon, 5-pin SOT-23-THIN package (2.90 mm × 1.60 mm); higher RθJA (225.3°C/W); no exposed thermal pad. | Suitable for space-constrained but thermally relaxed PCBs; less effective for continuous 200-mA loads at high ambient. | Select TPS79912DRVR only when board area is critical and thermal margin exceeds 30°C at max load. |
| TPS7A2012PDQNR | Lower IQ (25 μA), same 1.2-V fixed output, but lower PSRR (52 dB @ 1 kHz) and higher noise (25 μVRMS); 400-mA rating. | Better for ultra-low-power sleep modes, but insufficient for RF noise-sensitive applications requiring <15 μVRMS. | Choose TPS7A2012PDQNR only when quiescent current dominates design priority and RF performance is secondary. |
Compared with TPS79912DRVTG4, TPS79912DRVR trades thermal performance for smaller footprint, while TPS7A2012PDQNR sacrifices noise/PSRR for lower IQ-neither is pin-compatible, and both require layout revision for replacement.
Availability
TPS79912DRVTG4 is available at Aetrix Electronics and suitable for RF power amplifiers, VCO core supplies, wearable sensor hubs, and low-power MCU core rails requiring stable component supply across automotive-grade temperature ranges and high-volume production.
Supply support for TPS79912DRVTG4 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 leadership in power management ICs and high-reliability signal-chain solutions.
The TPS799 family is designed for noise-critical RF and precision analog applications demanding ultralow noise, high PSRR, and minimal quiescent current in compact packages.
FAQ
What is the maximum input voltage rating for the TPS79912DRVTG4?
The TPS79912DRVTG4 has an absolute maximum input voltage of 7.0 V. Operation beyond this risks permanent damage. For reliable continuous use, TI specifies a recommended maximum input of 6.5 V across the full temperature range, with minimum input set by dropout (1.3 V for 1.2-V output) or 2.7 V, whichever is greater. This ensures safe operation in battery-backed and DC/DC-fed systems.
Does the TPS79912DRVTG4 require an input capacitor for stability?
The TPS79912DRVTG4 does not require an input capacitor for stability, but TI recommends a 0.1–1-μF low-ESR ceramic capacitor near the IN pin to improve source impedance, transient response, and PSRR-especially when the input source has high impedance or long traces. This capacitor is optional but strongly advised for RF and precision analog applications where input noise coupling must be minimized.
How does the NR pin function on the TPS79912DRVTG4?
The NR pin on the TPS79912DRVTG4 connects to an external 0.01-μF capacitor to bypass noise from the internal bandgap reference. When used, it reduces total output noise to 10.5 × VOUT μVRMS (12.6 μVRMS for 1.2 V). The NR pin is high-impedance, so low-leakage ceramic capacitors are required; TI confirms optimal noise reduction occurs with 0.01 μF or smaller values to ensure full charging during the 135-μs quick-start window.
What is the thermal shutdown behavior of the TPS79912DRVTG4?
The TPS79912DRVTG4 activates thermal shutdown at 165°C junction temperature and remains latched off until junction temperature falls to approximately 145°C (20°C hysteresis). During shutdown, output is disabled and ground current drops to ~150 nA. This protects the device and downstream circuitry during sustained overload or poor heatsinking conditions, and recovery is automatic once thermal limits are restored-no external reset is needed.
Can the TPS79912DRVTG4 be used with output capacitances below 2.2 μF?
No-the TPS79912DRVTG4 is specified and characterized for stability only with output capacitance ≥2.2 μF (ceramic, X5R/X7R). Using smaller values risks oscillation, degraded transient response, and loss of PSRR performance. TI explicitly states that 2.2 μF is the minimum required for guaranteed stability across all operating conditions, including –40°C to +125°C and full 200-mA load range. Deviations require full system-level validation.
TPS79912DRVTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- 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:
- 6-WSON (2x2)
TPS79912DRVTG4 FAQ
1.How can I place an order for TPS79912DRVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS79912DRVTG4 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 TPS79912DRVTG4 reliable?
The price and inventory of TPS79912DRVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS79912DRVTG4 is usually 5 days.
3.What payment methods are accepted for TPS79912DRVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS79912DRVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS79912DRVTG4?
TPS79912DRVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS79912DRVTG4 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 TPS79912DRVTG4?
For technical support, including TPS79912DRVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS79912DRVTG4 requirements.
6.How does Aetrix verify that TPS79912DRVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS79912DRVTG4 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 TPS79912DRVTG4 meets industry standards.
7.What is the process for return or replacement of TPS79912DRVTG4?
All TPS79912DRVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS79912DRVTG4, 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 TPS79912DRVTG4 part is unused and in its original packaging.
Return procedure for TPS79912DRVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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