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Texas Instruments TPS72101DBVRG4
- Part No.:
- TPS72101DBVRG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS72101DBVRG4.pdf
- Description:
- IC REG LIN POS ADJ 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,308
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Product details
Overview
TPS72101DBVRG4 from Texas Instruments is an adjustable low-dropout linear regulator (LDO) delivering up to 150 mA output current with 1.225 V internal reference, 1.8 V minimum input voltage, and 240 mV typical dropout at 150 mA. It operates across –40°C to 125°C and uses only a 0.1-µF ceramic output capacitor for stability - ideal for space-constrained battery-powered microcontroller core supplies.
For engineers reviewing the TPS72101DBVRG4 datasheet, TPS72101DBVRG4 pinout, TPS72101DBVRG4 application, or TPS72101DBVRG4 equivalent, key selection considerations include its adjustable output range (1.22–2.5 V), ultra-low quiescent current (85 µA active / <1 µA shutdown), PMOS pass element enabling low-VIN operation, and thermal/current protection integrated in the SOT-23-5 package.
Technical Context
The TPS72101DBVRG4 implements a PMOS-based LDO architecture with internal 1.225 V bandgap reference and feedback-controlled error amplifier. Its adjustable configuration uses external resistors on the FB pin to set output voltage, while EN enables logic-controlled shutdown with sub-1 µA standby current.
Stability is achieved via internal compensation optimized for 0.1-µF ceramic output capacitance across full load (0–150 mA) and input voltage (1.8–5.5 V) ranges. Protection includes foldback current limiting (~350 mA trip), thermal shutdown at 170°C with 20°C hysteresis, and reverse-current safe back diode in the PMOS pass device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 150 mA max - sufficient for DSP/microcontroller core rails without external boost stages |
| Input Voltage Range | 1.8 V to 5.5 V - supports direct operation from two AAA batteries (1.8–3.0 V) |
| Dropout Voltage | 240 mV typ @ 150 mA - enables regulation down to VOUT + 0.24 V input |
| Quiescent Current | 85 µA typ @ 150 mA - extends battery life in always-on portable systems |
| Output Noise | 90 µVRMS @ 200 Hz–100 kHz - low enough for noise-sensitive analog peripherals |
| Reference Voltage | 1.225 V ±0.5% - sets precision of programmable output via external resistor divider |
| Thermal Shutdown | 170°C trip with 20°C hysteresis - prevents permanent damage during sustained overload |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body, 5-pin surface-mount, JEDEC MO-178 compliant, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply voltage | Accepts 1.8–5.5 V; connects to battery or upstream converter |
| 2 - GND | Ground reference | Common return path for input, output, and internal circuitry |
| 3 - EN | Enable control input | Logic-high (>1.4 V) enables regulation; logic-low (<0.4 V) disables output and reduces IQ to <1 µA |
| 4 - NC/FB | Feedback input (adjustable) / Not connected (fixed) | For TPS72101: connects external resistor divider to set VOUT; must not be shorted to GND |
| 5 - OUT | Regulated output voltage | Delivers stable, low-noise VOUT = 1.225 × (1 + R1/R2); requires 0.1-µF ceramic capacitor to GND |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Stable with 0.1-µF ceramic output cap - eliminates cost/size penalty of larger electrolytics |
| Ultra-low input voltage | Operates down to 1.8 V - enables direct use of depleting alkaline or Li-ion cells |
| Adjustable output | VOUT programmable from 1.22 V to 2.5 V using two external resistors - supports multiple core voltages from one BOM item |
| Integrated protection | Current limit (~350 mA), thermal shutdown (170°C), and reverse-current safe PMOS pass element - reduces need for external protection circuitry |
| Low-noise regulation | 90 µVRMS output noise over 200 Hz–100 kHz - suitable for mixed-signal SoC power domains |
Applications
| Portable Microcontroller Core Supply | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Powering ARM Cortex-M0+ or RISC-V MCU cores requiring 1.2–1.8 V at ≤150 mA from two AAA cells. IC Role / Device Role / Timing Role: Adjustable LDO providing clean, regulated core voltage with fast startup (<400 µs) and minimal board area. Use Value: Eliminates need for external DC/DC converter; extends runtime by operating down to 1.8 V input and drawing only 85 µA quiescent current. | Use Scenario: Supplying ultra-low-power environmental sensors (e.g., temperature/humidity ICs) in wireless IoT nodes powered by coin cells. IC Role / Device Role / Timing Role: Low-IQ LDO delivering stable 1.5 V rail during periodic wake-up bursts and deep-sleep intervals. Use Value: Sub-1 µA shutdown current preserves battery capacity over multi-year deployments; 0.1-µF cap simplifies layout in tiny PCB footprints. |
| PCMCIA Card Power Management | Modem Baseband Processor Supply |
Use Scenario: Regulating 1.5 V or 1.6 V for PCMCIA card logic in legacy laptop expansion slots with variable 3.3 V input. IC Role / Device Role / Timing Role: Fixed-output variant-compatible LDO handling input ripple and transient loads during hot-plug insertion. Use Value: Internal compensation ensures stability despite small 0.1-µF output cap; thermal protection prevents latch-up during brief overloads. | Use Scenario: Providing clean 1.8 V supply to modem baseband processors in cellular handsets where RF noise immunity is critical. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO decoupling switching noise from DC/DC converters feeding the RF section. Use Value: 48 dB PSRR at 100 Hz suppresses switching artifacts; PMOS architecture avoids reverse conduction during power-down sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS72101DBVR | Same silicon, identical electrical specs; differs only in tape-and-reel packaging (3000 vs 250 units) and RoHS marking suffix | No functional difference; suitable for same designs and qualification cycles | Select TPS72101DBVR for high-volume production runs requiring larger reels |
| MCP1826T-ADJE/MB | 150 mA adjustable LDO with 1.22 V ref, but requires ≥1 µF output cap and has higher 250 mV dropout at 150 mA | Less suitable for ultra-low-VIN or space-constrained designs due to larger capacitor requirement and lower efficiency near dropout | Choose only if existing design already uses MCP1826 and 1-µF cap footprint is available |
Compared with TPS72101DBVRG4, the TPS72101DBVR offers identical performance in a different reel size, while the MCP1826T-ADJE/MB demands larger output capacitance and delivers higher dropout - making the TPS72101DBVRG4 preferable for battery life-critical, miniaturized applications.
Availability
TPS72101DBVRG4 is available at Aetrix Electronics and suitable for portable communication devices, battery-powered sensor nodes, and PCMCIA card power management requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TPS72101DBVRG4 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-reliability, low-power regulator design.
The TPS721xx family was engineered specifically for ultra-low-input-voltage, capacitor-minimized power regulation in portable and battery-operated systems - prioritizing efficiency, small footprint, and robust protection.
FAQ
What is the minimum input voltage required for stable operation of the TPS72101DBVRG4?
The TPS72101DBVRG4 requires a minimum input voltage of 1.8 V or VOUT + VDO, whichever is greater. At 150 mA load and 1.8 V output, this means VIN must be ≥2.04 V (1.8 V + 240 mV dropout). Its ability to operate down to 1.8 V makes it uniquely suited for two-cell alkaline or lithium primary battery systems nearing end-of-life.
How do I configure the output voltage of the TPS72101DBVRG4?
The TPS72101DBVRG4 is an adjustable LDO: connect a resistor divider between OUT and GND, with the FB pin (Pin 4) tied to the midpoint. Use R2 = 30.1 kΩ for ~10 µA divider current, then calculate R1 = R2 × (VOUT/1.225 V − 1). For example, for 1.5 V output, R1 ≈ 6.78 kΩ (1% tolerance). Do not short FB to GND - it must float or connect only to the divider.
Does the TPS72101DBVRG4 require external capacitors, and if so, what values?
Yes - the TPS72101DBVRG4 requires a 0.1-µF ceramic capacitor on both IN and OUT pins to ensure stability and transient response. Larger values (e.g., 1 µF) improve ripple rejection and load step response but are not required. Avoid tantalum or aluminum electrolytic caps on OUT; ceramic X5R/X7R types are mandatory for guaranteed stability per TI's design guidelines.
What protection features are integrated into the TPS72101DBVRG4?
The TPS72101DBVRG4 integrates three key protections: (1) current limiting that activates at ~350 mA and folds back output voltage to limit power dissipation; (2) thermal shutdown at 170°C with automatic recovery after cooling to ~150°C; and (3) a built-in back diode in the PMOS pass element that safely conducts reverse current when VIN < VOUT, preventing damage during power-down sequencing.
Is the TPS72101DBVRG4 pin-compatible with other members of the TPS721xx family?
Yes - all TPS721xx variants (TPS72101, TPS72115, TPS72116, TPS72118) share identical SOT-23-5 (DBV) pinout and package dimensions. The TPS72101DBVRG4 differs only in its adjustable FB pin functionality, while fixed-output versions use Pin 4 as NC. This allows drop-in replacement in layouts designed for any TPS721xx part, provided the feedback network is adapted or omitted.
TPS72101DBVRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.22V
- Voltage - Output (Max):
- 2.5V
- Voltage Dropout (Max):
- 0.24V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 120 µA
- Current - Supply (Max):
- 850 µA
- PSRR:
- 48dB (100Hz)
- 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-23-5
TPS72101DBVRG4 FAQ
1.How can I place an order for TPS72101DBVRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS72101DBVRG4 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 TPS72101DBVRG4 reliable?
The price and inventory of TPS72101DBVRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS72101DBVRG4 is usually 5 days.
3.What payment methods are accepted for TPS72101DBVRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS72101DBVRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS72101DBVRG4?
TPS72101DBVRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS72101DBVRG4 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 TPS72101DBVRG4?
For technical support, including TPS72101DBVRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS72101DBVRG4 requirements.
6.How does Aetrix verify that TPS72101DBVRG4 is sourced from the original manufacturer or authorized distributors?
All TPS72101DBVRG4 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 TPS72101DBVRG4 meets industry standards.
7.What is the process for return or replacement of TPS72101DBVRG4?
All TPS72101DBVRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS72101DBVRG4, 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 TPS72101DBVRG4 part is unused and in its original packaging.
Return procedure for TPS72101DBVRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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