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Texas Instruments TPS61071TDDCRQ1
- Part No.:
- TPS61071TDDCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS61071TDDCRQ1.pdf
- Description:
- IC REG BOOST ADJ 455MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:8,029
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Product details
Overview
TPS61071TDDCRQ1 from Texas Instruments is an AEC-Q100 Grade 2 qualified synchronous boost converter IC for automotive power supplies, delivering up to 100 mA at 3.3 V from 0.9-V input, featuring 600-mA switch current limit, 90% peak efficiency, and load disconnect during shutdown.
For engineers reviewing the TPS61071TDDCRQ1 datasheet, TPS61071TDDCRQ1 pinout, TPS61071TDDCRQ1 application, or TPS61071TDDCRQ1 equivalent, key selection criteria include minimum 0.9-V start-up capability, fixed 1.2-MHz switching frequency, 500-mV feedback reference, thermal shutdown at 140°C, and SOT-23-6 (DDC) package compatibility with space-constrained automotive modules.
Technical Context
The TPS61071TDDCRQ1 implements a fixed-frequency PWM controller with synchronous rectification using integrated N-channel and P-channel MOSFETs, eliminating external Schottky diodes. Its feed-forward control architecture monitors VBAT, VOUT, and NMOS switch voltage drop to directly adjust duty cycle without relying solely on error amplifier loop response.
It lacks power-save mode and operates continuously at ~1.2 MHz across all loads. The 600-mA typical switch current limit, 0.8-V undervoltage lockout threshold, and active load disconnect via backgate-controlled PMOS ensure stable low-voltage battery operation down to 0.9 V while preventing battery drain during EN=low shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.9 V to 5.5 V - supports single-cell alkaline/NiMH (down to 0.9 V) and Li-ion (2.5–4.2 V) without external LDO pre-regulation |
| Output Voltage Range | Adjustable up to 5.5 V - set by external resistor divider; FB pin reference is 500 mV ±10 mV for precise regulation |
| Switch Current Limit | 600 mA typical - limits peak inductor current to protect internal NMOS switch and enable use of 4.7-µH inductors |
| Switching Frequency | 1.2 MHz nominal (960–1440 kHz) - enables compact 4.7-µH inductor and 10-µF ceramic capacitors, reducing board area |
| Quiescent Current | 19 µA typical - minimizes battery leakage in always-on automotive modules such as body controllers or sensors |
| Shutdown Current | 0.05 µA typical - ensures near-zero battery drain when EN = GND, critical for long-term parked vehicle operation |
| Thermal Shutdown | 140°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design in sealed enclosures |
Pinout & Package
SOT-23-6 (DDC) package, 1.60 mm × 2.90 mm body size, 0.95-mm height, thermally enhanced bottom paddle (GND-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Boost switch node | Connects to inductor and internal NMOS drain; carries high di/dt switching current - requires short, low-inductance layout |
| GND | Power and signal ground | IC substrate and power return path; must be connected to thermal pad and low-impedance ground plane for thermal and EMI performance |
| EN | Enable control input | Active-high logic input (VIH ≥ 0.8×VBAT); pulls to GND to fully isolate VOUT from VBAT during shutdown |
| FB | Voltage feedback input | Monitors resistive divider output; 500-mV reference sets VOUT = 500 mV × (1 + R1/R2); high impedance (0.01 µA) enables high-R dividers |
| VOUT | Regulated output | Delivers boosted DC voltage; includes internal synchronous rectifier - no external diode required |
| VBAT | Input supply rail | Accepts 0.9–5.5 V; feeds internal regulator and switch; UVLO triggers at ~0.8 V to prevent erratic operation during deep discharge |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Integrated NMOS/PNOS pair replaces Schottky diode, enabling >90% efficiency at 75 mA and eliminating reverse recovery losses |
| Load disconnect during shutdown | Backgate-controlled PMOS isolates VOUT from VBAT when EN = low, preventing battery self-discharge in parked vehicles |
| AEC-Q100 Grade 2 qualification | Validated for –40°C to +105°C ambient operation with HBM ±2 kV and CDM ±1 kV ESD robustness - suitable for under-hood and cabin applications |
| Fixed-frequency PWM control | 1.2-MHz operation enables predictable EMI filtering and eliminates subharmonic oscillation risks present in variable-frequency architectures |
| Internal soft-start & short-circuit protection | Precharge phase limits inrush current; current-limited rectifier switch prevents damage during output shorts or heavy transient loads |
Applications
| Automotive Body Control Module (BCM) | Automotive Tire Pressure Monitoring System (TPMS) |
|---|---|
Use Scenario: Powering microcontroller, CAN transceiver, and sensor interface in a 12-V vehicle's door module supplied by a local 3.3-V rail derived from a 1-cell Li-ion backup battery. IC Role / Device Role / Timing Role: Primary 3.3-V boost regulator maintaining stable supply during engine cranking when main 12-V rail dips below 9 V. Use Value: Enables uninterrupted BCM operation using ultra-low 0.9-V start-up and 19-µA quiescent current, extending backup battery life beyond 1 year. | Use Scenario: Generating regulated 3.3-V supply for pressure/temperature sensor and RF transmitter in a wheel-mounted TPMS sensor powered by a single CR2032 coin cell. IC Role / Device Role / Timing Role: High-efficiency boost converter sustaining 75-mA peak transmit current while operating down to 0.9-V battery voltage. Use Value: Delivers 90% efficiency at 10-mA load and full load disconnect in shutdown, enabling >5-year sensor lifetime on one battery. |
| Automotive Infotainment Display Backlight | Automotive Camera Module Power Supply |
Use Scenario: Providing adjustable 5-V output to drive white LED strings in a center-stack display, powered from a 3.3-V system rail. IC Role / Device Role / Timing Role: Fixed-frequency boost converter generating stable 5-V rail with minimal EMI impact on sensitive audio circuits. Use Value: 1.2-MHz switching allows small 4.7-µH inductor and avoids audible noise; 5.5-V max output supports future LED string count increases. | Use Scenario: Supplying 3.3-V power to image sensor and ISP in a rear-view camera module mounted in the vehicle tailgate, powered by a 1.5-V alkaline battery pack. IC Role / Device Role / Timing Role: Low-input-voltage boost regulator enabling operation from partially discharged alkaline cells without external charge pump. Use Value: 0.9-V minimum input and 75-mA output capability allow full camera functionality even after 80% battery depletion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61070TDDCRQ1 | Includes power-save mode for improved light-load efficiency; otherwise identical pinout, specs, and package | Better suited for intermittent-sensing applications where average load current is <5 mA | Select TPS61070TDDCRQ1 if system spends >70% time in low-power sleep states |
| MAX17222ETA+T | Higher 1.3-MHz switching frequency; 500-mA switch limit; 0.7-V start-up; different pinout (5-pin TSOT) | Enables smaller inductors but requires PCB redesign; not AEC-Q100 qualified | Choose MAX17222ETA+T only for non-automotive designs requiring sub-0.9-V start-up or tighter EMI filtering |
Compared with TPS61071TDDCRQ1, the TPS61070TDDCRQ1 offers superior light-load efficiency via power-save mode but sacrifices fixed-frequency predictability, while the MAX17222ETA+T provides lower start-up voltage and higher switch current at the cost of AEC-Q100 compliance and pin-incompatibility - making TPS61071TDDCRQ1 the optimal choice for deterministic timing and automotive qualification requirements.
Availability
TPS61071TDDCRQ1 is available at Aetrix Electronics and suitable for automotive body control modules, tire pressure monitoring systems, infotainment displays, and camera modules requiring stable component supply with AEC-Q100 reliability and long-term production continuity.
Supply support for TPS61071TDDCRQ1 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 and embedded processing technologies, with decades of automotive-grade power management innovation.
The TPS6107x-Q1 product line delivers highly integrated, AEC-Q100-qualified boost converters optimized for ultra-low-input-voltage battery-powered automotive subsystems including sensors, telematics, and infotainment peripherals.
FAQ
What is the minimum input voltage required for TPS61071TDDCRQ1 to start switching?
The TPS61071TDDCRQ1 requires a minimum input voltage of 1.1 V to initiate start-up under typical conditions (RL = 270 Ω), though it sustains regulation down to 0.9 V once operational. This 1.1-V start-up threshold ensures reliable turn-on from weak alkaline or NiMH cells while maintaining stability during deep discharge. The device enters undervoltage lockout below ~0.8 V to prevent malfunction.
Does TPS61071TDDCRQ1 support adjustable output voltage, and how is it configured?
Yes, TPS61071TDDCRQ1 supports adjustable output voltage up to 5.5 V using an external resistor divider connected to the FB pin. With a precise 500-mV internal reference, VOUT is calculated as VOUT = 500 mV × (1 + R1/R2). For a 3.3-V output, TI recommends R2 = 200 kΩ and R1 = 1 MΩ. The FB pin draws only 0.01 µA, enabling high-impedance dividers that minimize quiescent current.
How does TPS61071TDDCRQ1 achieve load disconnect during shutdown?
TPS61071TDDCRQ1 achieves true load disconnect during shutdown via a dedicated backgate control circuit that isolates the cathode of the internal high-side PMOS rectifier from its source when EN = low. Unlike conventional synchronous rectifiers where the body diode conducts during shutdown, this architecture prevents reverse current flow from VOUT to VBAT, ensuring zero battery drain in parked-vehicle scenarios - a critical feature for automotive always-on systems.
What inductor value is recommended for TPS61071TDDCRQ1 in a 3.3-V, 75-mA application?
Texas Instruments recommends a 4.7-µH shielded power inductor for TPS61071TDDCRQ1 in 3.3-V/75-mA applications, optimized for its 1.2-MHz switching frequency and 600-mA switch current limit. The device supports inductors from 2.2 µH to 10 µH; 4.7 µH balances peak current margin (≤600 mA), output ripple (<20 mV), and transient response. TDK VLF3010 and Wurth 744042 series are validated choices per TI documentation.
Is TPS61071TDDCRQ1 compatible with ceramic output capacitors, and what value is required?
Yes, TPS61071TDDCRQ1 is fully compatible with ceramic output capacitors. TI specifies a minimum 10-µF X5R/X7R ceramic capacitor at the VOUT pin to ensure stability and low ripple - matching the 10-µF value shown in the typical application circuit. This value accommodates both steady-state ripple (calculated at ~4.5 µF for 10-mV ripple) and load transient demands, while mitigating capacitance loss due to DC bias and frequency derating in compact automotive layouts.
TPS61071TDDCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 455mA (Switch)
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS61071TDDCRQ1 FAQ
1.How can I place an order for TPS61071TDDCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61071TDDCRQ1 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 TPS61071TDDCRQ1 reliable?
The price and inventory of TPS61071TDDCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61071TDDCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS61071TDDCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61071TDDCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61071TDDCRQ1?
TPS61071TDDCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61071TDDCRQ1 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 TPS61071TDDCRQ1?
For technical support, including TPS61071TDDCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61071TDDCRQ1 requirements.
6.How does Aetrix verify that TPS61071TDDCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS61071TDDCRQ1 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 TPS61071TDDCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS61071TDDCRQ1?
All TPS61071TDDCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS61071TDDCRQ1, 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 TPS61071TDDCRQ1 part is unused and in its original packaging.
Return procedure for TPS61071TDDCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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