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Texas Instruments TPS72118DBVTG4
- Part No.:
- TPS72118DBVTG4
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS72118DBVTG4.pdf
- Description:
- IC REG LINEAR 1.8V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,335
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Product details
Overview
TPS72118DBVTG4 from Texas Instruments is a fixed-output 1.8-V, 150-mA low-dropout linear regulator in a 5-pin SOT-23 (DBV) package. It operates down to 1.8 V input, delivers 200 mV typical dropout at full load, draws only 85 µA quiescent current, and stabilizes with just a 0.1-µF ceramic output capacitor-enabling compact, battery-powered DSP and microcontroller core supply designs.
For engineers reviewing the TPS72118DBVTG4 datasheet, TPS72118DBVTG4 pinout, TPS72118DBVTG4 application, or TPS72118DBVTG4 equivalent, key selection criteria include minimum input voltage (1.8 V), ultra-low output capacitance requirement (0.1 µF), shutdown current (<1 µA), thermal/overcurrent protection, and compatibility with two-cell AAA battery operation across full discharge range.
Technical Context
The TPS72118DBVTG4 uses a PMOS pass element to achieve low dropout and enable operation directly from depleted 2×AAA batteries (1.8–3.0 V). Its internal compensation eliminates need for ≥1-µF output capacitors-stabilizing over full load (0–150 mA) and temperature (−40°C to +125°C) ranges with only 0.1 µF.
Enable logic (VIH = 1.4 V, VIL = 0.4 V) supports direct tie-to-VIN or external control; thermal shutdown activates at 170°C with 20°C hysteresis, and current limiting engages near 350 mA. The NC/FB pin is unconnected in fixed-output variants like TPS72118DBVTG4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±3% (1.746–1.854 V) at 25°C, 0–150 mA load |
| Max Output Current | 150 mA continuous; internal current limit protects at ~350 mA |
| Dropout Voltage | 200 mV typical at 150 mA (enables regulation down to VIN = 2.0 V) |
| Input Voltage Range | 1.8 V to 5.5 V (supports full life of two AAA cells without boost) |
| Quiescent Current | 85 µA typical at 150 mA load; <1 µA in shutdown mode |
| Output Capacitor | 0.1 µF ceramic minimum (no ESR constraints; enables tiny footprint) |
| Thermal Shutdown | Activates at 170°C junction temperature; auto-recovery at ~150°C |
Pinout & Package
SOT-23 (DBV) package: 5-pin, 1.45 mm max height, JEDEC MO-178 compliant, tape-and-reel (250 pcs), RoHS-compliant NIPDAU finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Input supply voltage | Accepts 1.8–5.5 V; requires 0.1-µF ceramic bypass capacitor |
| 2 - GND | Ground reference | Power and signal return; connects to PCB ground plane for thermal dissipation |
| 3 - EN | Enable control input | Logic high (>1.4 V) enables regulator; low (<0.4 V) shuts down output and reduces IQ to <1 µA |
| 4 - NC/FB | No-connect / Feedback | Not connected in TPS72118DBVTG4 (fixed 1.8 V); leave floating per datasheet |
| 5 - OUT | Regulated output | Delivers stable 1.8 V; requires 0.1-µF ceramic capacitor to ground for stability |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Stable with 0.1-µF ceramic output cap-reduces BOM cost and board area vs. 1-µF+ competitors |
| Ultra-low input voltage | Operates from 1.8 V min-powers 1.8-V cores directly from two AAA batteries through full discharge |
| Sub-1-µA shutdown | 0.01 µA standby current enables multi-year battery life in always-on sensor nodes |
| Integrated protection | Auto-recovering thermal shutdown (170°C trip) and foldback current limit prevent damage during overload |
| PMOS pass transistor | Eliminates reverse-current path issues; built-in back diode safely handles VOUT > VIN conditions |
Applications
| Portable Communication Devices | Battery Powered Equipment |
|---|---|
Use Scenario: Powering baseband processor core in Bluetooth headsets and portable radios using two AAA cells. IC Role / Device Role / Timing Role: Primary 1.8-V core LDO supplying DSP/microcontroller VDD, replacing bulkier 1-µF-stable regulators. Use Value: Enables single-stage regulation from 1.8–3.0 V input-eliminating need for boost converter and reducing system cost and size. | Use Scenario: Supplying real-time clock and low-power MCU in handheld medical meters. IC Role / Device Role / Timing Role: Always-on 1.8-V rail generator with <1 µA shutdown current and fast start-up (<400 µs). Use Value: Extends shelf life and operational runtime by minimizing quiescent loss during sleep modes. |
| PCMCIA Cards | Personal Digital Assistants |
Use Scenario: Providing regulated 1.8-V I/O supply for PCMCIA memory cards in legacy industrial laptops. IC Role / Device Role / Timing Role: Fixed-output LDO delivering clean, low-noise power to card interface logic under variable host bus loading. Use Value: 90 µV RMS output noise and 48 dB PSRR at 100 Hz ensure reliable data transfer without signal integrity degradation. | Use Scenario: Core voltage regulation for ARM7-based PDAs operating from dual alkaline cells. IC Role / Device Role / Timing Role: Main 1.8-V system rail LDO with thermal protection to sustain peak CPU loads without shutdown. Use Value: 150-mA capability and 200-mV dropout allow full performance even as battery voltage drops to 2.0 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS72118DBVR | Same electrical specs; 3000-piece tape-and-reel vs. 250-piece reel (DBVTG4) | Identical function and pinout; suited for high-volume production vs. prototyping/sampling | Select DBVR for cost-optimized volume builds; DBVTG4 for low-MOQ evaluation and small-batch integration |
| MCP1700T-1802E/TT | 150-mA, 1.8-V fixed LDO; 6-µA IQ (vs. 85 µA), but requires 1-µF output cap and has 600-mV dropout | Lower quiescent current, but higher dropout and larger capacitor requirement limit battery-life advantage | Prefer TPS72118DBVTG4 where input voltage is constrained (e.g., ≤2.2 V) or minimal output capacitance is critical |
Compared with TPS72118DBVTG4, TPS72118DBVR offers identical performance in volume packaging, while MCP1700T-1802E/TT trades higher dropout and larger capacitor needs for ultra-low IQ-making TPS72118DBVTG4 optimal for space-constrained, low-input-voltage battery systems.
Availability
TPS72118DBVTG4 is available at Aetrix Electronics and suitable for portable communication devices, battery-powered medical instruments, and PCMCIA peripheral power supplies requiring stable component supply, long-lifecycle support, and RoHS-compliant SOT-23 packaging.
Supply support for TPS72118DBVTG4 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 LDO design expertise and broad automotive/industrial qualification.
The TPS721xx family was engineered specifically for ultra-low-input-voltage, space-constrained portable applications-delivering regulated core power from marginal battery sources without external compensation or large capacitors.
FAQ
What is the minimum input voltage required for stable operation of the TPS72118DBVTG4?
The TPS72118DBVTG4 requires a minimum input voltage of 1.8 V for guaranteed operation, or VOUT + VDO (1.8 V + 0.2 V = 2.0 V) at 150 mA load-whichever is greater. At light loads, it regulates stably down to 1.8 V due to its low dropout architecture and PMOS pass element.
Can the TPS72118DBVTG4 be used with only a 0.1-µF output capacitor?
Yes-the TPS72118DBVTG4 is internally compensated and fully stable with a 0.1-µF ceramic output capacitor across all operating conditions (0–150 mA, −40°C to +125°C). This eliminates ESR requirements and reduces solution size versus traditional LDOs needing ≥1-µF.
Does the TPS72118DBVTG4 include built-in protection features?
Yes-the TPS72118DBVTG4 integrates thermal shutdown (trip at 170°C, hysteresis 20°C), foldback current limiting (~350 mA), and reverse-current protection via its PMOS back diode. These features operate autonomously without external components to safeguard against overload, overtemperature, and VOUT > VIN conditions.
What is the function of the NC/FB pin on the TPS72118DBVTG4?
The NC/FB pin (Pin 4) is not connected in the TPS72118DBVTG4, as it is a fixed-output variant. Per TI's datasheet, this pin must be left floating and not tied to GND or any other node-doing so may affect regulation accuracy or stability.
How does the enable (EN) pin behave in the TPS72118DBVTG4?
The EN pin enables the TPS72118DBVTG4 when pulled above 1.4 V (VIH), and disables it-reducing quiescent current to <1 µA-when pulled below 0.4 V (VIL). It can be tied directly to VIN if shutdown functionality is not needed, simplifying circuit design.
TPS72118DBVTG4 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:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- 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
TPS72118DBVTG4 FAQ
1.How can I place an order for TPS72118DBVTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS72118DBVTG4 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 TPS72118DBVTG4 reliable?
The price and inventory of TPS72118DBVTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS72118DBVTG4 is usually 5 days.
3.What payment methods are accepted for TPS72118DBVTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS72118DBVTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS72118DBVTG4?
TPS72118DBVTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS72118DBVTG4 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 TPS72118DBVTG4?
For technical support, including TPS72118DBVTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS72118DBVTG4 requirements.
6.How does Aetrix verify that TPS72118DBVTG4 is sourced from the original manufacturer or authorized distributors?
All TPS72118DBVTG4 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 TPS72118DBVTG4 meets industry standards.
7.What is the process for return or replacement of TPS72118DBVTG4?
All TPS72118DBVTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS72118DBVTG4, 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 TPS72118DBVTG4 part is unused and in its original packaging.
Return procedure for TPS72118DBVTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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