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Texas Instruments TPS61072DDCR
- Part No.:
- TPS61072DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS61072DDCR.pdf
- Description:
- IC REG BOOST ADJ 500MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:11,537
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Product details
Overview
TPS61072DDCR from Texas Instruments is a synchronous boost DC-DC converter IC designed for low-input-voltage battery-powered systems. It delivers up to 75 mA at 3.3 V from a 0.9-V input, operates with fixed 600-kHz switching frequency, features 600-mA peak switch current limit, and provides load disconnect during shutdown. It targets single-cell alkaline/NiMH/Li-ion applications requiring regulated output voltage up to 5.5 V.
For engineers reviewing the TPS61072DDCR datasheet, TPS61072DDCR pinout, TPS61072DDCR application, or TPS61072DDCR equivalent, this page delivers verified electrical parameters, validated pin functions, confirmed thermal and efficiency behavior across input voltage range, and real-world alternative selection guidance for battery-powered portable designs.
Technical Context
The TPS61072DDCR implements a fixed-frequency PWM controller with synchronous rectification using integrated N-channel and P-channel MOSFETs. Its control loop uses a 500-mV internal reference voltage compared against FB pin feedback, enabling precise output regulation via external resistor divider.
It employs a multiple feedforward topology monitoring VBAT, VOUT, and NMOS switch voltage drop to directly adjust duty cycle-bypassing slow error-amplifier response-and includes undervoltage lockout (0.8 V), overtemperature protection (140 °C), and soft-start with precharge current limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.9 V to 5.5 V - supports full discharge of single-cell alkaline down to 0.9 V while maintaining regulation |
| Output Voltage Range | Adjustable up to 5.5 V - set by external resistor divider; FB pin reference is 500 mV ±5 mV |
| Switching Frequency | 600 kHz (typ) - fixed frequency enables predictable EMI filtering and inductor sizing |
| Peak Switch Current Limit | 600 mA (typ) - limits inductor and switch stress; enables 75 mA output at 3.3 V from 0.9-V input |
| Quiescent Current | 19 µA (typ) - enables long battery life in always-on low-power modes |
| Shutdown Current | 0.05 µA (typ) - ensures near-zero battery drain when disabled |
| Efficiency | Up to 90% - achieved via synchronous rectification eliminating Schottky diode losses |
Pinout & Package
TPS61072DDCR is housed in a 6-pin thin SOT-23 (DDC) package measuring 2.90 mm × 1.60 mm, optimized for space-constrained portable PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Boost switch node | Connects to inductor and internal NMOS switch; carries high di/dt switching current |
| EN | Enable control input | Active-high logic input; threshold is 0.8×VBAT - no external level-shifting needed for battery rails |
| GND | Power and signal ground | Common return path for switch current and control circuitry; must be low-impedance |
| VOUT | Regulated output | Delivers boosted DC voltage; load is fully disconnected from VBAT during shutdown |
| VBAT | Input power supply | Accepts 0.9–5.5 V; supplies internal regulator and switch driver; UVLO triggers at ~0.8 V |
| FB | Feedback input | Senses output via resistor divider; regulates VOUT to 500 mV reference - sets output as VO = 500 mV × (1 + R1/R2) |
Key Features
| Feature | Design Value |
|---|---|
| Load disconnect during shutdown | Prevents battery drain by isolating VOUT from VBAT using internal PMOS backgate control - no external MOSFET required |
| Fixed 600-kHz switching frequency | Enables consistent EMI profile and simplifies filter design vs. variable-frequency alternatives; avoids audible noise in audio applications |
| 600-mA peak switch current limit | Supports robust operation with 4.7-µH inductors and 10-µF ceramic capacitors; accommodates transient loads without foldback |
| 0.8-V undervoltage lockout | Protects battery from deep discharge; prevents erratic operation below usable cell voltage - critical for alkaline/NiMH longevity |
| Synchronous rectification | Replaces lossy Schottky diode with low-RDS(on) PMOS; achieves >90% efficiency even at light loads and low input voltages |
Applications
| Portable Audio Players | Personal Medical Devices |
|---|---|
Use Scenario: Powering analog audio codec and microcontroller from single AA/AAA alkaline cell. IC Role / Device Role / Timing Role: Primary DC-DC boost regulator generating stable 3.3 V rail from 0.9–1.65 V battery. Use Value: Enables full battery utilization down to 0.9 V while sustaining 75 mA output and >90% efficiency - extends playback time by ~25% vs. non-boost solutions. |
Use Scenario: Supplying glucose meter display, sensor interface, and BLE radio from coin-cell or AAA battery. IC Role / Device Role / Timing Role: Efficient step-up converter delivering regulated 3.3 V or 5 V from low-voltage primary cells. Use Value: Shutdown current <0.1 µA preserves shelf life; load disconnect prevents parasitic drain - critical for multi-year medical device certification. |
| Cellular Phones (Feature Phones) | White LED Lighting |
Use Scenario: Providing backlight and RF power supply in legacy GSM handsets powered by single Li-ion cell. IC Role / Device Role / Timing Role: Boost converter generating 5 V for display driver and 3.3 V for baseband ICs. Use Value: Fixed 600-kHz frequency avoids interference with cellular bands; 19-µA quiescent current minimizes standby drain during idle periods. |
Use Scenario: Driving 3–5 white LEDs in portable diagnostic tools or handheld scanners. IC Role / Device Role / Timing Role: Constant-voltage boost source powering LED string via current-limiting resistor or external driver. Use Value: Adjustable output up to 5.5 V supports varying LED forward voltage stacks; synchronous rectification maintains brightness consistency across battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61071DDCR | Same 600-kHz fixed frequency and 600-mA switch limit, but identical quiescent current and shutdown specs | No functional difference - pin-to-pin compatible; differs only in factory programming of EN threshold logic | Select TPS61071DDCR only if system-level enable logic requires identical VBAT-referenced EN threshold as TPS61072DDCR |
| TPS61200DRCR | Higher 1.2-A switch limit, 1.2-MHz switching, wider 0.3–5.5-V input range, but 25-µA quiescent current | Better suited for higher-output-current or ultra-low-input-voltage (<0.9 V) applications; not drop-in due to different pinout and compensation | Choose TPS61200DRCR when >75 mA output or sub-0.9-V start-up is required - requires PCB redesign and loop compensation review |
Compared with TPS61071DDCR, TPS61072DDCR offers identical performance and pin compatibility but is designated for TI's standard production binning; versus TPS61200DRCR, it trades higher current capability for lower quiescent current and simpler layout - making it optimal for cost-sensitive, long-life, low-to-moderate current battery systems.
Availability
TPS61072DDCR is available at Aetrix Electronics and suitable for portable audio players, personal medical devices, feature phones, and white LED lighting requiring stable component supply across extended production lifecycles.
Supply support for TPS61072DDCR 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, specializing in analog, embedded processing, and power management technologies.
The TPS6107x family was engineered specifically for ultra-low-input-voltage battery-powered applications - delivering high efficiency and load disconnect in minimal footprint for portable consumer and medical electronics.
FAQ
What is the minimum input voltage required for TPS61072DDCR to start switching?
The TPS61072DDCR requires a minimum input voltage of 1.1 V (typical) to initiate startup under a 270-Ω load. Once operational, it sustains regulation down to 0.9 V input. This 1.1-V startup threshold ensures reliable turn-on from partially discharged alkaline or NiMH cells while avoiding false triggering during transient dips.
Does TPS61072DDCR support adjustable output voltage, and how is it configured?
Yes, TPS61072DDCR supports adjustable output voltage from 1.8 V to 5.5 V using an external resistor divider on the FB pin. With a precise 500-mV internal reference, VO is calculated as VO = 500 mV × (1 + R1/R2). For example, R1 = 1 MΩ and R2 = 200 kΩ yields 3.3 V output. The TPS61072DDCR datasheet specifies R2 should be ~200 kΩ for optimal stability and noise immunity.
How does TPS61072DDCR achieve load disconnect during shutdown?
The TPS61072DDCR uses an internal circuit that disconnects the cathode of the high-side PMOS backgate diode from its source when EN is low. This prevents reverse current flow from VOUT to VBAT - unlike conventional synchronous rectifiers where the body diode conducts during shutdown. As a result, the TPS61072DDCR guarantees true load isolation with <0.1 µA shutdown current.
What is the switching frequency of TPS61072DDCR, and why is it fixed?
The TPS61072DDCR operates at a fixed 600-kHz (typical) switching frequency. This fixed frequency simplifies EMI filter design, avoids audible noise in sensitive audio circuits, and eliminates frequency jitter that could complicate compliance testing. Unlike power-save mode variants, TPS61072DDCR maintains constant frequency across all load conditions - ensuring predictable transient response.
Can TPS61072DDCR be used with input voltages higher than the output voltage?
No - TPS61072DDCR is a boost-only converter and cannot regulate when VBAT ≥ VOUT. Its control architecture requires VBAT to be lower than the programmed output voltage to maintain closed-loop regulation. If VBAT rises above VOUT (e.g., during Li-ion charging), the TPS61072DDCR output will follow VBAT minus diode drop, and regulation is lost. External OR-ing or LDO supervision is required for such mixed-source systems.
TPS61072DDCR 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:
- 500mA (Switch)
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS61072DDCR FAQ
1.How can I place an order for TPS61072DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61072DDCR 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 TPS61072DDCR reliable?
The price and inventory of TPS61072DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61072DDCR is usually 5 days.
3.What payment methods are accepted for TPS61072DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61072DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61072DDCR?
TPS61072DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61072DDCR 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 TPS61072DDCR?
For technical support, including TPS61072DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61072DDCR requirements.
6.How does Aetrix verify that TPS61072DDCR is sourced from the original manufacturer or authorized distributors?
All TPS61072DDCR 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 TPS61072DDCR meets industry standards.
7.What is the process for return or replacement of TPS61072DDCR?
All TPS61072DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61072DDCR, 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 TPS61072DDCR part is unused and in its original packaging.
Return procedure for TPS61072DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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