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Texas Instruments TPS70615DBVT
- Part No.:
- TPS70615DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS70615DBVT.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,697
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Product details
Overview
TPS70615DBVT from Texas Instruments is a 150-mA, fixed 1.5-V output, ultralow-quiescent-current (1 µA) LDO voltage regulator in SOT-23-5 package, featuring reverse current protection, 2% output accuracy over –40°C to +125°C, and 245-mV dropout at 50 mA - designed for always-on battery-powered systems such as wearables and medical sensors.
For engineers reviewing the TPS70615DBVT datasheet, TPS70615DBVT pinout, TPS70615DBVT application, or TPS70615DBVT equivalent, key selection criteria include quiescent current under load, shutdown current (150 nA), thermal shutdown threshold (158°C), reverse current leakage (<10 nA), and compatibility with 2.2-µF ceramic output capacitors.
Technical Context
The TPS70615DBVT employs a PMOS pass transistor architecture enabling low dropout and inherent reverse current blocking without external components. Its precision band-gap reference and error amplifier deliver 2% DC output accuracy across temperature and line/load variations.
Functional modes include normal regulation, dropout operation (with controlled ground current rise), and active-high enable–controlled shutdown (VEN < 0.4 V). Internal protection includes thermal shutdown (trip at 158°C, reset at 140°C), current limiting (≥200 mA), and undervoltage lockout (UVLO).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V - eliminates external feedback network; stable across 100 µA–150 mA load range. |
| Quiescent Current | 1 µA - enables multi-year battery life in always-on IoT sensor nodes with microamp-level sleep current budgets. |
| Shutdown Current | 150 nA - reduces system standby power to negligible levels when EN is pulled low. |
| Dropout Voltage | 245 mV at 50 mA - supports regulation from 1.745 V input, critical for single-cell Li-ion or coin-cell applications. |
| Output Accuracy | ±2% over –40°C to +125°C - ensures reliable logic-level compliance for 1.5-V I/O domains in industrial environments. |
| Reverse Current Protection | ≤10 nA reverse leakage - prevents battery drain when multiple rails are sequenced or back-driven. |
| PSRR @ 100 Hz | 62 dB - suppresses low-frequency switching noise from upstream DC/DC converters feeding the LDO. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, thermally enhanced with GND-connected die pad; requires standard SMT reflow profile per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Unregulated input supply | Accepts 2.7–6.5 V; must be ≥1.745 V for 1.5-V regulation; connect 0.1–2.2 µF ceramic capacitor to GND. |
| GND (Pin 2) | Power ground reference | Electrical and thermal reference node; tie thermal pad directly to PCB ground plane for RθJB = 39.5°C/W. |
| EN (Pin 3) | Active-high enable control | Pull ≥0.9 V to enable; ≤0.4 V to enter 150-nA shutdown; floating defaults to enabled state. |
| OUT (Pin 5) | Regulated output | Delivers 1.5 V ±2%; requires ≥2.2 µF X7R/X5R ceramic capacitor to GND for stability. |
| NC (Pin 4) | No internal connection | Not bonded; leave unconnected or tie to GND for mechanical reinforcement only - no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow IQ (1 µA) | Enables >10-year battery life in 10-µA average-current wearable devices using CR2032 cells. |
| Reverse current protection | Blocks <10 nA reverse flow from OUT to IN - eliminates need for external blocking diode in multi-rail systems. |
| Thermal shutdown with hysteresis | Shuts down at 158°C and recovers at 140°C - prevents thermal runaway while allowing safe cyclic fault handling. |
| Low-noise output (190 µVRMS) | Meets noise-sensitive analog front-end requirements for precision ADCs and RF receivers without added filtering. |
| Stable with 2.2-µF ceramic output cap | Reduces BOM count and board area vs. traditional LDOs requiring tantalum or larger ceramics. |
Applications
| Wearable Health Sensors | Portable Medical Devices |
|---|---|
|
Use Scenario: Continuous ECG/PPG monitoring in wrist-worn patches powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Primary 1.5-V supply for ultra-low-power analog front-end and BLE SoC. Use Value: 1 µA quiescent current extends battery life beyond 2 years; reverse protection prevents discharge during USB charging events. |
Use Scenario: Battery-backed glucose meter with LCD display and electrochemical sensor interface. IC Role / Device Role / Timing Role: Clean 1.5-V rail for precision op-amps and 16-bit SAR ADC reference buffer. Use Value: 190 µVRMS output noise ensures <1 LSB error in 16-bit conversion; ±2% accuracy maintains calibration integrity across clinic-to-home temperature ranges. |
| Smartphone Camera Modules | Industrial IoT Edge Nodes |
|
Use Scenario: Powering CIS (CMOS Image Sensor) analog core and PLL clock circuitry in dual-camera subsystems. IC Role / Device Role / Timing Role: Low-noise bias supply for image sensor pixel array and timing generator ICs. Use Value: 62 dB PSRR at 100 Hz rejects noise from baseband processor switching; 245-mV dropout allows use of shared 2.8-V intermediate rail. |
Use Scenario: Remote vibration sensor node with MEMS accelerometer, MCU, and LoRa transceiver operating on AA batteries. IC Role / Device Role / Timing Role: Always-on 1.5-V supply for real-time clock, wake-up comparator, and flash memory retention. Use Value: 150 nA shutdown current enables 10+ year shelf life; thermal shutdown (158°C) protects against enclosure overheating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 1.8-µA IQ, SOT-23-3, no enable pin, 2% accuracy, 600-mV dropout at 250 mA | Lacks EN control and reverse current protection; higher dropout limits low-voltage operation | Choose for cost-sensitive, non-shutdown applications where 2.7-V minimum input is acceptable |
| ADP160ACBZ-1.5-R7 | 1.3-µA IQ, 190-mV dropout at 150 mA, no reverse current protection, WLCSP-4 package | Smaller footprint but no EN pin; lacks reverse blocking - requires external diode in back-powered systems | Prefer for space-constrained designs where board area is critical and reverse current risk is mitigated externally |
Compared with MCP1700T-1502E/TT and ADP160ACBZ-1.5-R7, the TPS70615DBVT uniquely combines sub-µA quiescent current, integrated enable, reverse current blocking, and SOT-23-5 manufacturability - making it optimal for battery-critical, multi-rail portable systems requiring robust fault handling.
Availability
TPS70615DBVT is available at Aetrix Electronics and suitable for wearable health sensors, portable medical devices, smartphone camera modules, and industrial IoT edge nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPS70615DBVT 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 headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPS706 series was developed specifically for ultralow-power, always-on applications demanding nanoscale quiescent current, robust protection features, and high accuracy across extended temperature ranges - targeting next-generation battery-operated sensing and connectivity devices.
FAQ
What is the maximum input voltage rating for the TPS70615DBVT?
TPS70615DBVT has an absolute maximum input voltage (VIN) rating of 7 V, but its recommended operating range is 2.7 V to 6.5 V. Exceeding 7 V risks permanent damage. For reliable 1.5-V output regulation, VIN must remain ≥1.745 V (1.5 V + 245 mV dropout) under load. Operation above 6.5 V voids specification guarantees and may trigger internal protection circuits.
Does the TPS70615DBVT require an external pull-up resistor on the EN pin?
No, the TPS70615DBVT does not require an external pull-up on the EN pin. The device enables by default when EN is left floating due to internal weak pull-up. However, for deterministic startup in noisy environments, TI recommends tying EN to IN via a 100-kΩ resistor or driving it actively. Pulling EN below 0.4 V disables the device, drawing only 150 nA.
Can the TPS70615DBVT safely operate with a 1-µF output capacitor?
No - the TPS70615DBVT requires a minimum 2.2-µF ceramic output capacitor (X5R/X7R) for guaranteed stability across temperature and load. Using 1 µF violates the 2.0-µF minimum specified for outputs <1.5 V and risks oscillation or poor transient response. TI validates stability only with ≥2.2 µF, 0–0.2 Ω ESR capacitors.
How does reverse current protection function in the TPS70615DBVT during system power sequencing?
The TPS70615DBVT provides always-active reverse current protection that blocks current flow from OUT to IN whenever VOUT > VIN, limiting leakage to ≤10 nA. This occurs regardless of EN state or output voltage level above 1.8 V. It prevents battery drain when downstream circuits power up before the LDO's input rail - critical in multi-supply systems with independent power domains.
What thermal performance can be expected from the TPS70615DBVT in a standard 2-layer PCB layout?
In a standard 2-layer PCB with 1-in² 1-oz copper pour connected to the thermal pad, the TPS70615DBVT (DBV package) achieves RθJB ≈ 39.5°C/W. At 150 mA load and 2.7 V input, power dissipation is ~180 mW, resulting in ~7°C junction-to-board rise. Full derating per TI's thermal curves is required above 85°C ambient to stay within the 125°C max operating junction temperature.
TPS70615DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 2.55 µA
- Current - Supply (Max):
- 350 µA
- PSRR:
- 80dB ~ 52dB (10Hz ~ 1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS70615DBVT FAQ
1.How can I place an order for TPS70615DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS70615DBVT 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 TPS70615DBVT reliable?
The price and inventory of TPS70615DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS70615DBVT is usually 5 days.
3.What payment methods are accepted for TPS70615DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS70615DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS70615DBVT?
TPS70615DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS70615DBVT 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 TPS70615DBVT?
For technical support, including TPS70615DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS70615DBVT requirements.
6.How does Aetrix verify that TPS70615DBVT is sourced from the original manufacturer or authorized distributors?
All TPS70615DBVT 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 TPS70615DBVT meets industry standards.
7.What is the process for return or replacement of TPS70615DBVT?
All TPS70615DBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS70615DBVT, 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 TPS70615DBVT part is unused and in its original packaging.
Return procedure for TPS70615DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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