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Texas Instruments TPS71921-22DRVT
- Part No.:
- TPS71921-22DRVT
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS71921-22DRVT.pdf
- Description:
- IC REG LIN 2.1V/2.2V 200MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
TPS71921-22DRVT from Texas Instruments is a dual-channel, 200mA low-noise, high-PSRR LDO regulator with independent enables and active output pulldown on both channels. It delivers fixed 2.1V on OUT1 and 2.2V on OUT2, operates from 2.7V to 6.5V input, achieves 230mV dropout at 200mA, and is stable with 1µF ceramic output capacitors - ideal for powering noise-sensitive analog and RF circuitry in compact portable systems.
For engineers reviewing the TPS71921-22DRVT datasheet, TPS71921-22DRVT pinout, TPS71921-22DRVT application, or TPS71921-22DRVT equivalent, key selection considerations include dual independent enable control, 70µVRMS output noise, 65dB PSRR at 1kHz, thermal shutdown at +160°C, and compatibility with 2mm × 2mm SON-6 (DRV) packaging for space-constrained designs.
Technical Context
The TPS71921-22DRVT integrates two PMOS-based LDOs sharing a common input but featuring separate EN1/EN2 controls, GND-referenced feedback, and factory-programmed fixed outputs. Each channel employs low-quiescent-current biasing (90µA total with both enabled) and an innovative low-current mode for stable regulation down to zero load.
It includes undervoltage lockout (UVLO) with 2.45V threshold and 150mV hysteresis, overcurrent and thermal protection, and - uniquely for the TPS719xx family - active pulldown circuitry on both outputs to rapidly discharge loads during shutdown, critical for sequencing-sensitive applications like camera modules and WLAN basebands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltages | 2.1V (OUT1) and 2.2V (OUT2), factory-programmed fixed values with ±3% accuracy over line/load/temp |
| Input voltage range | 2.7V to 6.5V - supports single-cell Li-ion, USB, and intermediate rail supplies |
| Max output current per channel | 200mA - sufficient for powering multiple low-power cores, sensors, or RF front-ends |
| Dropout voltage | 230mV at 200mA - enables operation with minimal headroom, e.g., 2.43V IN for 2.2V OUT2 |
| Output noise | 70µVRMS (BW = 100Hz–100kHz) - suitable for ADC references and PLL VCO supplies |
| PSRR | 65dB at 1kHz, 44dB at 1MHz - suppresses switching noise from upstream DC/DC converters |
| Enable logic | Active-high EN1/EN2 with TTL/CMOS-compatible thresholds (VEN(HI) = 1.25V min) |
Pinout & Package
TPS71921-22DRVT is housed in a 2mm × 2mm, 6-pin WSON (DRV) package with exposed thermal pad connected to GND. The package supports fine-pitch PCB assembly and provides low thermal resistance (RθJA = 95°C/W on high-K board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Regulator 1 output | Delivers stable 2.1V; requires ≥1µF ceramic capacitor to GND for stability |
| IN | Input supply | Common input for both LDOs; accepts 2.7V–6.5V; decoupling recommended near pin |
| OUT2 | Regulator 2 output | Delivers stable 2.2V; independently regulated; same capacitor requirement as OUT1 |
| EN2 | Enable for Regulator 2 | Active-high control; drives OUT2 into low-IQ shutdown when pulled ≤0.4V |
| GND | Ground reference | Common ground for both regulators; thermal pad must be soldered to PCB GND plane |
| EN1 | Enable for Regulator 1 | Active-high control; independent of EN2, enabling flexible power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Independent dual enables | EN1 and EN2 allow precise sequencing of 2.1V and 2.2V rails - essential for FPGA I/O banks or mixed-signal SoCs |
| Active output pulldown | Both OUT1 and OUT2 actively discharge during shutdown, preventing floating nodes and ensuring clean reset behavior |
| Ultra-low noise | 70µVRMS output noise enables use in precision analog signal chains without additional filtering |
| High PSRR at low headroom | 65dB @ 1kHz with only 0.5V VIN–VOUT margin - maintains clean power even under tight supply constraints |
| Stable with 1µF ceramic caps | Eliminates need for large tantalum or electrolytic capacitors, reducing BOM cost and board area |
Applications
| Mobile Camera Module | Wireless LAN Baseband |
|---|---|
|
Use Scenario: Powering CIS image sensor analog core and digital interface simultaneously with tight noise and sequencing requirements. IC Role / Device Role / Timing Role: Dual-LDO providing isolated 2.1V (sensor analog) and 2.2V (MIPI D-PHY) rails with independent enable control. Use Value: Active pulldown ensures rapid sensor reset; 70µVRMS noise prevents image banding; 230mV dropout extends battery life. |
Use Scenario: Supplying WLAN SoC RF transceiver and baseband processor from shared battery rail. IC Role / Device Role / Timing Role: Dual-output regulator delivering clean, sequenced 2.1V (RF VDD) and 2.2V (baseband I/O) with fast startup (160µs). Use Value: 65dB PSRR suppresses DC/DC switching noise; independent EN pins support WLAN sleep/wake protocols. |
| Digital Still Camera | Bluetooth Audio Headset |
|
Use Scenario: Powering CCD/CMOS sensor, ISP, and display driver in ultra-thin consumer cameras. IC Role / Device Role / Timing Role: Compact dual-LDO replacing discrete regulators; 2mm × 2mm DRV package fits tight camera module layouts. Use Value: Low 90µA quiescent current extends standby time; thermal shutdown (+160°C) protects against lens motor heat buildup. |
Use Scenario: Delivering regulated power to Bluetooth audio codec and Class-D amplifier in battery-powered earbuds. IC Role / Device Role / Timing Role: Dual LDO supplying 2.1V (codec AVDD) and 2.2V (amp PVDD) with simultaneous or staggered enable. Use Value: 1µF ceramic stability reduces component count; 44dB PSRR at 1MHz mitigates RF coupling into audio path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS71921-28DRVT | Same DRV package and dual-LDO architecture, but outputs 2.1V/2.8V instead of 2.1V/2.2V | Suitable where higher second-rail voltage is needed for I/O interfaces or memory | Select when system requires 2.8V for SDIO or GPIO, not 2.2V; pinout and enable behavior identical |
| TPS71918-28DRVT | Outputs 1.8V/2.8V; otherwise identical electrical specs, package, and features | Better suited for 1.8V-core SoCs paired with 2.8V peripherals (e.g., OLED displays) | Choose for lower-core-voltage applications; no layout change required, but verify voltage compatibility with load ICs |
Compared with TPS71921-22DRVT, the TPS71921-28DRVT and TPS71918-28DRVT retain identical enable timing, noise, PSRR, and thermal performance but shift the second output to 2.8V - making them direct functional alternatives when 2.2V is not required and 2.8V better matches peripheral voltage needs.
Availability
TPS71921-22DRVT is available at Aetrix Electronics and suitable for mobile camera modules, wireless LAN basebands, digital still cameras, and Bluetooth audio headsets requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for TPS71921-22DRVT 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 expertise in precision power management ICs.
The TPS719xx family was designed specifically for space-constrained, battery-powered portable electronics demanding ultra-low noise, high PSRR, dual independent regulation, and active pulldown - targeting camera, WLAN, and audio subsystems.
FAQ
What are the exact output voltages of the TPS71921-22DRVT?
The TPS71921-22DRVT delivers precisely 2.1V on OUT1 and 2.2V on OUT2. These values are factory-programmed using EEPROM and specified with ±3% accuracy across temperature, line, and load conditions - confirmed in the Electrical Characteristics table of the SBVS088C datasheet.
Does the TPS71921-22DRVT require external components for stability?
No, the TPS71921-22DRVT is stable with only 1µF ceramic output capacitors on both OUT1 and OUT2, as verified in the datasheet's stability section and typical application circuit. An optional 0.1µF–1.0µF input capacitor is recommended for improved transient response but not required for stability.
How does the active pulldown feature work on the TPS71921-22DRVT?
The TPS71921-22DRVT incorporates active pulldown circuitry on both OUT1 and OUT2. When either EN pin is driven low, the corresponding output is actively discharged to GND via an internal NMOS switch - ensuring rapid, controlled voltage decay without relying on external resistors or load leakage.
What is the maximum junction temperature and thermal protection behavior of the TPS71921-22DRVT?
The TPS71921-22DRVT activates thermal shutdown at approximately +160°C junction temperature and resets at +140°C. This hysteresis prevents oscillation, and the device is rated for continuous operation up to +125°C ambient - validated in the Absolute Maximum Ratings and Dissipation Ratings tables of the datasheet.
Can the TPS71921-22DRVT operate from a 2.5V input supply?
No. The TPS71922DRVT requires a minimum input voltage of 2.7V, as stated in the Electrical Characteristics table. With 2.2V output, the minimum valid input is 2.43V (2.2V + 230mV dropout), but the absolute minimum VIN specification is 2.7V - so 2.5V is below operational range and will trigger UVLO.
TPS71921-22DRVT 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:
- 2
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 2.1V, 2.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 160 µA
- Current - Supply (Max):
- 250 µA
- PSRR:
- 63dB ~ 44dB (100Hz ~ 1MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS71921-22DRVT FAQ
1.How can I place an order for TPS71921-22DRVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS71921-22DRVT 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 TPS71921-22DRVT reliable?
The price and inventory of TPS71921-22DRVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS71921-22DRVT is usually 5 days.
3.What payment methods are accepted for TPS71921-22DRVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS71921-22DRVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS71921-22DRVT?
TPS71921-22DRVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS71921-22DRVT 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 TPS71921-22DRVT?
For technical support, including TPS71921-22DRVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS71921-22DRVT requirements.
6.How does Aetrix verify that TPS71921-22DRVT is sourced from the original manufacturer or authorized distributors?
All TPS71921-22DRVT 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 TPS71921-22DRVT meets industry standards.
7.What is the process for return or replacement of TPS71921-22DRVT?
All TPS71921-22DRVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS71921-22DRVT, 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 TPS71921-22DRVT part is unused and in its original packaging.
Return procedure for TPS71921-22DRVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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