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Texas Instruments TPS71812-33DRVT
- Part No.:
- TPS71812-33DRVT
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS71812-33DRVT.pdf
- Description:
- IC REG LIN 1.2V/3.3V 200MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,260
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Product details
Overview
TPS71812-33DRVT from Texas Instruments is a dual-output, 200mA low-noise LDO regulator with independent enables, delivering 1.2V and 3.3V outputs from a 2.7V–6.5V input. It features 230mV dropout at 200mA, 70µVRMS output noise, 65dB PSRR at 1kHz, and stable operation with 1µF ceramic capacitors. It serves power-sensitive portable applications such as camera modules and Bluetooth transceivers.
For engineers reviewing the TPS71812-33DRVT datasheet, TPS71812-33DRVT pinout, TPS71812-33DRVT application, or TPS71812-33DRVT equivalent, key selection criteria include dual-rail fixed-voltage regulation, ultra-low quiescent current (90µA both enabled), thermal/overcurrent protection, and compatibility with compact 2mm × 2mm SON-6 packaging for space-constrained designs.
Technical Context
The TPS71812-33DRVT integrates two independent PMOS-based LDOs sharing a common input but with separate EN1/EN2 controls and OUT1/OUT2 outputs. Each regulator uses a precision bandgap reference and feedback loop to achieve ±3% output accuracy over load, line, temperature, and process variations.
It employs low-headroom architecture enabling high PSRR (44dB at 1MHz) and fast transient response even near dropout, while its active low-current mode maintains regulation down to zero load. The device includes undervoltage lockout (2.45V nominal), thermal shutdown (+160°C), and internal current limiting (240–575mA per channel).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltages | Fixed 1.2V (OUT1) and 3.3V (OUT2); factory-programmed via EEPROM, no external resistors required |
| Max output current | 200mA per channel; internally current-limited to 240–575mA depending on VIN and temperature |
| Dropout voltage | 230mV typical at 200mA; enables efficient regulation from low VIN–VOUT headroom (e.g., 3.53V input for 3.3V rail) |
| Ground current | 90µA typical with both LDOs enabled; critical for battery life in always-on subsystems |
| Noise & PSRR | 70µVRMS (100Hz–100kHz); 65dB PSRR at 1kHz - supports noise-sensitive analog/RF circuitry |
| Enable logic | Active-high EN1/EN2 compatible with 1.2V–6.5V logic; shutdown current ≤3.0µA at VIN ≤4.5V |
| Operating temp | –40°C to +125°C junction; fully specified across automotive and industrial temperature ranges |
Pinout & Package
TPS71812-33DRVT is packaged in a 2mm × 2mm WSON-6 (DRV) package with exposed thermal pad connected to GND. Pin 1 is located at bottom-left corner (A1 position) when viewed top-down with marking dot in upper-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1 | Regulator 1 output | Delivers fixed 1.2V; requires ≥1µF ceramic capacitor to GND for stability and transient response |
| IN | Input supply | Common input for both LDOs; accepts 2.7V–6.5V; decoupling capacitor recommended near pin |
| OUT2 | Regulator 2 output | Delivers fixed 3.3V; independent of OUT1; same capacitor requirement as OUT1 |
| EN2 | Enable for OUT2 | Logic-high (>1.25V) enables 3.3V rail; low disables and reduces quiescent current |
| GND | Power ground | Common return for both regulators; thermal pad must be soldered to PCB GND plane for thermal performance |
| EN1 | Enable for OUT1 | Logic-high (>1.25V) enables 1.2V rail; independent control allows staggered power-up sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs | Enables simultaneous 1.2V and 3.3V rails with separate enable pins for flexible power sequencing and subsystem isolation |
| Ultra-low noise | 70µVRMS output noise supports ADCs, RF synthesizers, and precision analog sensors without additional filtering |
| High PSRR at high frequency | 44dB rejection at 1MHz allows clean regulation even with noisy switcher-derived inputs or shared power domains |
| Stable with minimal capacitance | Guaranteed stability with 1µF X5R/X7R ceramic output caps - reduces BOM count and board area vs. larger electrolytics |
| Robust protection suite | Integrated overcurrent, thermal shutdown (+160°C), and UVLO (2.45V) prevent damage during fault conditions |
Applications
| Camera Module Power | Bluetooth Baseband Supply |
|---|---|
Use Scenario: Dual-rail power for CMOS image sensor (1.2V core) and I/O interface (3.3V) in smartphone front/rear cameras. IC Role / Device Role / Timing Role: Primary dual-output LDO providing regulated, low-noise bias for analog pixel array and digital interface logic. Use Value: 70µVRMS noise prevents image fixed-pattern noise; independent enables allow sensor initialization before I/O activation. | Use Scenario: Powering Bluetooth baseband processor (1.2V core) and RF transceiver (3.3V I/O) in wireless earbuds. IC Role / Device Role / Timing Role: Compact dual-LDO delivering tightly regulated rails with minimal footprint and thermal overhead. Use Value: 2mm × 2mm DRV package fits tight acoustic cavities; 90µA quiescent current extends battery runtime in standby mode. |
| Portable WLAN SoC | Industrial Handheld Terminal |
Use Scenario: Supplying 1.2V CPU core and 3.3V PHY/interface for Wi-Fi 5/6 SoCs in tablets and hotspots. IC Role / Device Role / Timing Role: High-PSRR dual LDO rejecting switching noise from adjacent DC/DC converters feeding the SoC. Use Value: 65dB PSRR at 1kHz suppresses ripple from buck converters; fast 160µs startup meets WLAN MAC layer timing requirements. | Use Scenario: Powering ARM Cortex-M microcontroller (1.2V core) and display driver (3.3V) in ruggedized handheld scanners. IC Role / Device Role / Timing Role: Industrial-grade dual LDO operating continuously from –40°C to +125°C ambient with full spec compliance. Use Value: Guaranteed ±3% output accuracy across temperature ensures reliable ADC reference and LCD contrast control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS71812-33DRVR | Same electrical specs and pinout; differs only in tape-and-reel quantity (3000 vs. 250 pieces) | Identical functionality; selected for high-volume production runs requiring larger reels | Choose DRVR for automated SMT assembly lines; DRVT preferred for prototyping and low-volume builds |
| TPS71912-33DRVT | Includes active output pulldown circuit on both channels; higher shutdown current (1.8µA vs. 3.0µA max) | Required where rapid discharge of 3.3V rail is needed during power-down (e.g., USB suspend) | Use TPS71912-33DRVT if active pulldown is mandatory; otherwise TPS71812-33DRVT offers lower quiescent current |
Compared with TPS71812-33DRVR, the TPS71812-33DRVT provides identical regulation performance in a smaller reel format ideal for engineering validation; versus TPS71912-33DRVT, it trades active pulldown capability for lower shutdown current-critical for battery-powered devices with long sleep intervals.
Availability
TPS71812-33DRVT is available at Aetrix Electronics and suitable for camera modules, Bluetooth audio systems, and portable WLAN devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TPS71812-33DRVT 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 power management ICs, with decades of expertise in high-performance linear regulators.
The TPS718xx family was designed specifically for space-constrained, battery-powered portable electronics needing dual low-noise, low-quiescent-current LDOs in ultra-small packages.
FAQ
What are the fixed output voltages of the TPS71812-33DRVT?
The TPS71812-33DRVT delivers precisely 1.2V on OUT1 and 3.3V on OUT2. These values are factory-programmed into internal EEPROM during wafer test and cannot be adjusted externally. Both outputs maintain ±3% accuracy across –40°C to +125°C junction temperature, 0–200mA load, and input voltage range of VOUT(NOM) + 0.5V to 6.5V.
Does the TPS71812-33DRVT require external components for stability?
No, the TPS71812-33DRVT is stable with only 1µF ceramic output capacitors on OUT1 and OUT2 - no series resistance or additional compensation networks are needed. X5R or X7R dielectrics are recommended for minimal ESR (<1Ω) and stable capacitance over temperature. An optional 0.1–1.0µF input capacitor improves transient immunity but is not required for stability.
How does the enable logic work on the TPS71812-33DRVT?
The TPS71812-33DRVT has two independent active-high enable pins: EN1 controls OUT1 (1.2V) and EN2 controls OUT2 (3.3V). Either pin must be driven above 1.25V (with VIN ≥ 2.7V) to activate its respective LDO; below 0.4V, the channel enters shutdown with <3.0µA total ground current. EN1 and EN2 may be tied together or driven separately for power sequencing.
What thermal considerations apply to the TPS71812-33DRVT in a 2mm × 2mm SON package?
The TPS71812-33DRVT in DRV package has RθJA = 95°C/W on a JEDEC high-K board. To maintain TJ ≤ +125°C, maximum power dissipation must be limited - e.g., at VIN = 5V and IOUT = 200mA per rail, PD ≈ (5V−1.2V)×0.2A + (5V−3.3V)×0.2A = 0.76W + 0.34W = 1.1W, requiring adequate copper area and thermal vias under the exposed pad connected to GND.
Is the TPS71812-33DRVT pin-compatible with other members of the TPS718xx family?
Yes, all TPS718xx devices in the DRV (WSON-6) package share identical pinout, footprint, and thermal pad layout - including TPS71818-33DRVT and TPS71825-12DRVT. Voltage combinations differ per part number, but PCB design, layout, and assembly processes are fully reusable across the family.
TPS71812-33DRVT 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):
- 1.2V, 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -, 0.4V @ 200mA
- 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)
TPS71812-33DRVT FAQ
1.How can I place an order for TPS71812-33DRVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS71812-33DRVT 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 TPS71812-33DRVT reliable?
The price and inventory of TPS71812-33DRVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS71812-33DRVT is usually 5 days.
3.What payment methods are accepted for TPS71812-33DRVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS71812-33DRVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS71812-33DRVT?
TPS71812-33DRVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS71812-33DRVT 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 TPS71812-33DRVT?
For technical support, including TPS71812-33DRVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS71812-33DRVT requirements.
6.How does Aetrix verify that TPS71812-33DRVT is sourced from the original manufacturer or authorized distributors?
All TPS71812-33DRVT 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 TPS71812-33DRVT meets industry standards.
7.What is the process for return or replacement of TPS71812-33DRVT?
All TPS71812-33DRVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS71812-33DRVT, 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 TPS71812-33DRVT part is unused and in its original packaging.
Return procedure for TPS71812-33DRVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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