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Texas Instruments TPS78228QDRVRQ1
- Part No.:
- TPS78228QDRVRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS78228QDRVRQ1.pdf
- Description:
- IC REG LINEAR 2.8V 150MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS78228QDRVRQ1 from Texas Instruments is an automotive-grade, fixed-output 2.8 V ultra-low-quiescent-current LDO regulator delivering 150 mA with 1 μA IQ, 130 mV dropout at 25°C/150 mA, and ±4% output accuracy over load/line/temperature - designed for battery-powered MSP430 microcontroller rails and smoke detector standby power.
For engineers reviewing the TPS78228QDRVRQ1 datasheet, TPS78228QDRVRQ1 pinout, TPS78228QDRVRQ1 application, or TPS78228QDRVRQ1 equivalent, key selection factors include its AEC-Q100 qualification, 2-mm × 2-mm SON-6 thermal-pad package, CMOS-compatible enable pin (1.2 V ON / 0.4 V OFF), and stability with ≥1-μF ceramic output capacitance.
Technical Context
The TPS78228QDRVRQ1 uses a PMOS pass transistor architecture to achieve low dropout and ultra-low quiescent current. Its internal EEPROM-programmed 2.8 V output is factory-trimmed for ±4% accuracy across –40°C to +125°C, and it integrates active pulldown, thermal shutdown (160°C trip), and current limiting (150–400 mA).
It operates from 2.2 V to 5.5 V input, supports shutdown current as low as 18 nA, and maintains PSRR of 40 dB at 10 Hz and 15 dB at 1 kHz under 150 mA load - all while requiring only a single 1-μF ceramic capacitor on the output for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | Fixed 2.8 V, factory-programmed via EEPROM; enables precise rail generation without external feedback components. |
| Quiescent current | 1 μA typical at no load; allows >10-year battery life in always-on sensor nodes and smoke detectors. |
| Dropout voltage | 130 mV at 150 mA and 25°C; supports operation down to VIN = 2.93 V while maintaining regulation. |
| Output accuracy | ±4% over full load (0–150 mA), line (VIN = VOUT+0.5 V to 5.5 V), and temperature (–40°C to +125°C); ensures reliable MCU core voltage margining. |
| Stability condition | Stable with ≥1.0 μF X5R/X7R ceramic output capacitor; eliminates need for high-ESR tantalum or electrolytic capacitors. |
| Enable logic threshold | Active-high EN pin with 1.2 V turn-on and 0.4 V turn-off; compatible with MSP430 GPIO and low-voltage CMOS interfaces. |
| Thermal protection | Thermal shutdown at 160°C with 20°C hysteresis (reset at 140°C); prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
TPS78228QDRVRQ1 is housed in a 2-mm × 2-mm SON-6 package with exposed thermal pad (DRV). All ground pins must be connected to PCB ground; thermal pad grounding is strongly recommended for thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output | Delivers stable 2.8 V; requires ≥1 μF ceramic capacitor to GND for loop stability and transient response. |
| 2 (NC) | No connection | Internally unconnected; must remain floating - no PCB trace or copper pour should attach to this pad. |
| 3, 5 (GND) | Ground reference | Dual GND pins provide low-impedance return path; both must be tied directly to system ground plane. |
| 4 (EN) | Enable control | CMOS-compatible digital input; drives regulator ON (>1.2 V) or into 18-nA shutdown (<0.4 V). |
| 6 (IN) | Input supply | Accepts 2.2–5.5 V; benefits from local 1-μF ceramic decoupling to minimize noise coupling and improve PSRR. |
| Thermal pad | Thermal and electrical ground | Exposed copper pad beneath package; must be soldered to solid GND plane for thermal dissipation and EMI suppression. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Rated for automotive applications (Grade 1: –40°C to +125°C junction), including infotainment and body electronics. |
| Ultra-low IQ | 1 μA operating current enables multi-year operation from coin cells in wireless sensors and safety-critical standby circuits. |
| Active output pulldown | Discharges OUT to ≤5% VOUT during shutdown - prevents floating rail issues in powered-down subsystems. |
| Miniaturized SON-6 | 2 mm × 2 mm footprint with thermal pad reduces board area by >50% vs. TSOT-23 alternatives, easing dense layout in space-constrained modules. |
| Robust protection suite | Integrated thermal shutdown, current limit (150–400 mA), and reverse-voltage body-diode awareness prevent field failures. |
Applications
| Automotive Body Control Module | MSP430-Based Sensor Node |
|---|---|
|
Use Scenario: Powering low-power microcontrollers and CAN transceivers in door modules and seat controllers. IC Role / Device Role / Timing Role: Primary 2.8 V LDO supplying MCU core and peripheral I/O rails during sleep and wake cycles. Use Value: 1 μA quiescent current minimizes battery drain during vehicle off-state, extending parasitic draw compliance beyond 25 μA requirements. |
Use Scenario: Regulating power for environmental sensors (temp/humidity) and BLE radios in battery-operated IoT endpoints. IC Role / Device Role / Timing Role: Standby-mode voltage source enabling fast wake-up from deep-sleep states with minimal voltage droop. Use Value: 130 mV dropout at 150 mA allows operation down to 2.93 V input, maximizing usable capacity from 3.0 V lithium primary cells. |
| Smoke Detector Power Management | Industrial Programmable Logic Controller (PLC) I/O Isolation Rail |
|
Use Scenario: Providing always-on 2.8 V bias to electrochemical CO sensing circuitry and alarm drivers. IC Role / Device Role / Timing Role: Fault-tolerant LDO with thermal and overcurrent protection ensuring continuous operation during fault events. Use Value: ±4% output accuracy over temperature guarantees consistent sensor biasing across –40°C to +85°C ambient, reducing calibration drift. |
Use Scenario: Generating isolated 2.8 V supply for optocoupler input stages and digital isolator side-rails in modular PLC backplanes. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from main 3.3 V/5 V domains to suppress cross-talk and ground bounce. Use Value: Stable operation with 1-μF ceramic capacitor simplifies BOM and avoids ESR-sensitive tantalum capacitors in harsh industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS78227QDRVRQ1 | Fixed 2.7 V output; identical package, IQ, accuracy, and protection features. | Suitable where system logic or ADC reference requires 2.7 V instead of 2.8 V. | Select when exact 2.7 V rail is required; pinout, thermal design, and layout are identical. |
| TPS78230QDRVRQ1 | Fixed 3.0 V output; same SON-6 DRV package, 1 μA IQ, and ±4% accuracy spec. | Used in 3.0 V I/O domains for FPGAs, memory interfaces, or mixed-signal ASICs. | Choose for 3.0 V systems; no layout change needed, but verify downstream voltage tolerance margins. |
Compared with TPS78227QDRVRQ1 and TPS78230QDRVRQ1, the TPS78228QDRVRQ1 provides a distinct 2.8 V output optimized for MSP430 core voltage and specific analog sensor bias points - offering identical thermal, packaging, and reliability characteristics while targeting a narrow voltage window between 2.7 V and 3.0 V applications.
Availability
TPS78228QDRVRQ1 is available at Aetrix Electronics and suitable for automotive body electronics, battery-powered sensor nodes, smoke detector standby power, and industrial PLC I/O isolation rails requiring stable component supply and AEC-Q100 compliance.
Supply support for TPS78228QDRVRQ1 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 automotive ICs, with decades of LDO design expertise and broad automotive qualification infrastructure.
The TPS782xx family was engineered specifically for ultra-low-power battery applications demanding sub-μA quiescent current, AEC-Q100 Grade 1 operation, and miniaturized packaging - targeting MSP430-based systems and safety-critical standby functions.
FAQ
What is the maximum input voltage rating for the TPS78228QDRVRQ1?
The TPS78228QDRVRQ1 has an absolute maximum input voltage of +6.0 V. However, its functional operating range is specified from 2.2 V to 5.5 V. Exceeding 5.5 V may cause permanent damage or violate safe operating area limits, especially at elevated temperatures. Always maintain VIN ≤ 5.5 V in normal operation to ensure reliability and meet datasheet performance guarantees for the TPS78228QDRVRQ1.
Does the TPS78228QDRVRQ1 require an input capacitor for stability?
The TPS78228QDRVRQ1 does not require an input capacitor for loop stability, but TI strongly recommends using a 1.0 μF ceramic capacitor close to the IN pin. This improves transient response, reduces input ripple coupling, and enhances PSRR - particularly critical in noisy automotive or industrial environments. The TPS78228QDRVRQ1's stability is guaranteed with ≥1.0 μF on the output, not the input.
Can the TPS78228QDRVRQ1 be used without connecting the thermal pad?
No - the thermal pad on the TPS78228QDRVRQ1 must be soldered to a PCB ground plane. It serves dual roles: thermal dissipation (reducing θJA by up to 45°C/W) and EMI suppression. Leaving it unconnected risks thermal shutdown under 150 mA load and increases output noise. TI's datasheet explicitly recommends grounding the thermal pad, and the TPS78228QDRVRQ1's safe operating area assumes proper thermal pad implementation.
What is the startup time of the TPS78228QDRVRQ1 from enable assertion?
The TPS78228QDRVRQ1 has a typical startup time of 500 μs - defined as the interval from EN rising to 1.2 V until VOUT reaches 90% of its nominal 2.8 V output. This value is measured with COUT = 1.0 μF and IOUT = 150 mA. Startup time remains consistent across temperature (–40°C to +125°C) and is unaffected by input voltage within the 2.2–5.5 V range, making the TPS78228QDRVRQ1 suitable for fast-wake applications.
Is the TPS78228QDRVRQ1 pin-compatible with other devices in the TPS782xx-Q1 family?
Yes - all TPS782xx-Q1 variants in the DRV (SON-6) package, including TPS78225QDRVRQ1, TPS78227QDRVRQ1, TPS78228QDRVRQ1, and TPS78230QDRVRQ1, share identical pinout, package dimensions, thermal pad layout, and electrical interface. This allows direct substitution in the same PCB footprint when changing output voltage requirements - no layout revision is needed for voltage binning changes within the TPS782xx-Q1 family.
TPS78228QDRVRQ1 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:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1.3 µA
- Current - Supply (Max):
- 8 µA
- PSRR:
- 40dB ~ 15dB (10Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS78228QDRVRQ1 FAQ
1.How can I place an order for TPS78228QDRVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS78228QDRVRQ1 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 TPS78228QDRVRQ1 reliable?
The price and inventory of TPS78228QDRVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS78228QDRVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS78228QDRVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS78228QDRVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS78228QDRVRQ1?
TPS78228QDRVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS78228QDRVRQ1 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 TPS78228QDRVRQ1?
For technical support, including TPS78228QDRVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS78228QDRVRQ1 requirements.
6.How does Aetrix verify that TPS78228QDRVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS78228QDRVRQ1 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 TPS78228QDRVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS78228QDRVRQ1?
All TPS78228QDRVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS78228QDRVRQ1, 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 TPS78228QDRVRQ1 part is unused and in its original packaging.
Return procedure for TPS78228QDRVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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