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Texas Instruments TPS781330220DDCR
- Part No.:
- TPS781330220DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
TPS781330220DDCR.pdf
- Description:
- IC REG LIN 3.3V/2.2V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS781330220DDCR from Texas Instruments is a 150mA ultralow-power LDO regulator with pin-selectable dual output voltages (3.3V HIGH / 2.2V LOW), 1µA quiescent current, 200mV dropout at 150mA, and ±3% output accuracy over load/line/temperature - designed for battery-powered microcontroller sleep/wake power rails.
For engineers reviewing the TPS781330220DDCR datasheet, TPS781330220DDCR pinout, TPS781330220DDCR application, or TPS781330220DDCR equivalent, key selection criteria include VSET-controlled voltage toggling, thermal shutdown behavior, stability with 1.0µF ceramic output capacitor, and TSOT23-5 package compatibility with MSP430-based portable systems.
Technical Context
The TPS781330220DDCR implements a factory-programmed EPROM-based voltage selection architecture where the VSET pin toggles between two preset outputs: 3.3V (VSET low) and 2.2V (VSET high). Its bandgap reference and active pull-down circuitry enable sub-800µs bidirectional voltage transitions under 150mA load.
It integrates thermal shutdown (trip at +160°C, reset at +140°C), current limiting (230mA typical), and CMOS-compatible EN pin logic (1.2V turn-on threshold). The device operates across –40°C to +125°C junction temperature with no external components required beyond 1.0µF input/output ceramic capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150mA max continuous; supports MSP430 active-mode rail without derating at +85°C ambient in TSOT23-5. |
| Quiescent Current | 1µA typical; enables >1-year battery life in smoke detectors and memory cards during standby. |
| Dropout Voltage | 200mV at 150mA; allows operation from 2.4V input when regulating 2.2V output, extending usable battery range. |
| Output Accuracy | ±3% over full load/line/temperature; ensures reliable logic-level compliance for 2.2V/3.3V I/O domains. |
| Stability | Stable with ≥1.0µF ceramic output capacitor; eliminates need for tantalum or large bulk capacitance. |
| VSET Toggle Time | 800µs high-to-low and low-to-high; meets dynamic voltage scaling timing for MSP430 LPM3→active transitions. |
| Shutdown Current | 18nA typical; reduces system leakage during deep sleep modes in handheld devices. |
Pinout & Package
TPS781330220DDCR uses the TSOT23-5 package (2.9mm × 1.6mm × 1.0mm height), optimized for space-constrained portable designs. Thermal performance is characterized with RθJA = 200°C/W on standard JEDEC board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 5) | Regulated output | Delivers selected 3.3V or 2.2V; requires 1.0µF ceramic capacitor to GND for stability. |
| VSET/FB (Pin 4) | Voltage select input | Drives <0.4V for 3.3V output; >1.2V for 2.2V output; 70nA input current minimizes divider loading. |
| IN (Pin 1) | Input supply | Accepts 2.2V–5.5V; 1.0µF ceramic capacitor recommended at source for PSRR improvement. |
| GND (Pin 2) | Power ground | Reference for all internal circuits; must be low-impedance connection to PCB ground plane. |
| EN (Pin 3) | Enable control | CMOS-compatible; >1.2V enables regulator, <0.4V disables with 18nA shutdown current. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-level output selection | VSET pin toggles between factory-programmed 3.3V and 2.2V outputs-no external resistors or firmware needed. |
| Ultralow IQ | 1µA operating current enables multi-year operation in coin-cell–powered sensors and wearables. |
| Fast VSET transition | 800µs output switching time supports dynamic voltage scaling in MSP430 LPM3↔active mode transitions. |
| Robust protection | Integrated thermal shutdown (+160°C trip) and current limit (230mA typ) prevent damage during fault conditions. |
| Minimal BOM | Stable with 1.0µF ceramic capacitors on IN and OUT-reduces board area and cost vs. traditional LDOs. |
Applications
| Wireless Handset Power Management | MSP430-Based Sensor Node |
|---|---|
Use Scenario: Dual-rail power for baseband processor requiring 3.3V during call processing and 2.2V during idle/sleep. IC Role / Device Role / Timing Role: Primary LDO delivering dynamically switched core voltage; VSET synchronized to processor power-state controller. Use Value: Reduces average system current by 42% versus fixed 3.3V rail, extending talk time in Bluetooth headsets. | Use Scenario: Battery-powered environmental sensor logging data every 5 minutes with 99% duty-cycled sleep. IC Role / Device Role / Timing Role: System power regulator enabling MSP430 LPM3 mode (2.2V) and wake-up burst (3.3V). Use Value: Achieves 1.6µA total system sleep current including LDO, enabling >3-year CR2032 battery life. |
| Smartphone Subsystem Rail | Smoke Detector Audio Alert Circuit |
Use Scenario: Dedicated low-noise rail for camera ISP or audio codec requiring clean 3.3V during operation and ultra-low IQ during standby. IC Role / Device Role / Timing Role: Noise-isolated power source with 86µVRMS output noise; VSET driven by PMIC sequencer. Use Value: Prevents switching noise coupling into analog signal chain while maintaining <1µA quiescent draw in off-state. | Use Scenario: Self-powered smoke alarm using alkaline AA batteries with decade-long shelf life and audible alert activation. IC Role / Device Role / Timing Role: Primary regulator supplying MCU and piezo driver; EN controlled by smoke detection logic. Use Value: 18nA shutdown current preserves battery capacity during 10-year storage; 200mV dropout extends operational life to end-of-battery voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-voltage LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS781330220DRV | Same electrical specs; 2mm×2mm SON-6 package with thermal pad (RθJA = 65°C/W vs. 200°C/W). | Better thermal performance at >100mA continuous load; requires PCB thermal via design. | Select DRV for higher ambient temperature or sustained 150mA loads; DDC preferred for ultra-compact layouts. |
| TPS780330220DDCR | 500nA IQ (vs. 1µA); same dual-voltage function and TSOT23-5 package; 200mA current limit. | Lower IQ extends battery life in always-on sensing nodes; identical pinout and footprint. | Choose TPS780 for longest possible battery life where 500nA vs. 1µA matters; verify startup time impact on system wake latency. |
Compared with TPS781330220DRV, the DDC variant trades thermal performance for minimal PCB area; versus TPS780330220DDCR, it offers faster transient response at the cost of 500nA higher quiescent current-critical for applications prioritizing rapid wake-up over ultimate battery longevity.
Availability
TPS781330220DDCR is available at Aetrix Electronics and suitable for wireless handsets, MSP430-based sensor nodes, smartphone subsystem rails, and smoke detector audio alert circuits requiring stable component supply with guaranteed long-term availability.
Supply support for TPS781330220DDCR 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 low-power design and precision analog ICs.
The TPS781 series was developed specifically for battery-powered applications needing dynamic voltage scaling-enabling microcontrollers like the MSP430 to reduce system power by switching between high-performance and ultra-low-power supply rails.
FAQ
What are the factory-programmed output voltages for TPS781330220DDCR?
The TPS781330220DDCR is factory-programmed for 3.3V output when the VSET pin is driven low (<0.4V), and 2.2V output when VSET is driven high (>1.2V). These values are fixed per the part number suffix "330220" and cannot be altered in-circuit.
Does TPS781330220DDCR require external resistors to set output voltage?
No. TPS781330220DDCR does not require external resistors - its dual output voltages (3.3V and 2.2V) are permanently programmed at the factory using EPROM technology. Only the VSET pin control signal is needed to toggle between them.
What is the minimum input voltage required for TPS781330220DDCR to regulate 3.3V output?
To regulate 3.3V output at 150mA, TPS781330220DDCR requires VIN ≥ 3.5V (3.3V + 200mV dropout). The absolute minimum input rating is 2.2V, but regulation is only guaranteed when VIN exceeds VOUT by the specified dropout voltage under load.
Can TPS781330220DDCR be used with a 1.0µF ceramic output capacitor?
Yes. TPS781330220DDCR is explicitly characterized and guaranteed stable with a 1.0µF X5R/X7R ceramic capacitor on the output - eliminating need for larger or more expensive capacitor types and reducing PCB area.
How does the EN pin behavior differ from the VSET pin in TPS781330220DDCR?
The EN pin controls global on/off state (high = enabled, low = 18nA shutdown), while VSET selects between the two active output voltages (low = 3.3V, high = 2.2V). Both pins accept CMOS logic levels, but EN has no effect unless the device is enabled; VSET only functions when EN is high.
TPS781330220DDCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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):
- 3.3V, 2.2V
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS781330220DDCR FAQ
1.How can I place an order for TPS781330220DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS781330220DDCR 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 TPS781330220DDCR reliable?
The price and inventory of TPS781330220DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS781330220DDCR is usually 5 days.
3.What payment methods are accepted for TPS781330220DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS781330220DDCR transactions.
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4.How is shipping managed for TPS781330220DDCR?
TPS781330220DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS781330220DDCR 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 TPS781330220DDCR?
For technical support, including TPS781330220DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS781330220DDCR requirements.
6.How does Aetrix verify that TPS781330220DDCR is sourced from the original manufacturer or authorized distributors?
All TPS781330220DDCR 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 TPS781330220DDCR meets industry standards.
7.What is the process for return or replacement of TPS781330220DDCR?
All TPS781330220DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS781330220DDCR, 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 TPS781330220DDCR part is unused and in its original packaging.
Return procedure for TPS781330220DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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