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Texas Instruments TPS61070DDCR
- Part No.:
- TPS61070DDCR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS61070DDCR.pdf
- Description:
- IC REG BOOST ADJ 500MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,201
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Product details
Overview
TPS61070DDCR from Texas Instruments is a synchronous boost DC-DC converter IC designed for ultra-low-input-voltage battery-powered systems. It delivers up to 75 mA at 3.3 V from a 0.9-V input, features 90% peak efficiency, 1.2-MHz fixed-frequency PWM operation, and integrated 600-mA switch with power-save mode for light-load optimization - used in portable medical devices and single-cell alkaline/NiMH/Li-ion power rails.
For engineers reviewing the TPS61070DDCR datasheet, TPS61070DDCR pinout, TPS61070DDCR application, or TPS61070DDCR equivalent, this page provides verified technical context, validated pin functions, confirmed operating conditions (0.9–5.5 V input, 1.8–5.5 V adjustable output), real-world efficiency curves, and two rigorously cross-checked alternative parts for low-voltage boost conversion.
Technical Context
The TPS61070DDCR implements a fixed-frequency, pulse-width-modulation controller with synchronous rectification using integrated N-channel and P-channel MOSFETs. Its multiple feedforward control topology monitors input voltage, output voltage, and NMOS switch voltage drop to directly adjust duty cycle - bypassing slow error-amplifier loops for fast transient response.
It integrates undervoltage lockout (0.8 V threshold), overtemperature protection (140 °C trip), soft-start with precharge current limiting, and load disconnect during shutdown via backgate diode isolation. Power-save mode activates automatically below ~10 mA load to sustain >85% efficiency down to microamp loads.
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 (0.9 V cutoff) and Li-ion (2.5–4.2 V typical) |
| Output Voltage Range | Adjustable 1.8 V to 5.5 V - set by external resistor divider; FB pin reference = 500 mV ±5 mV |
| Switching Frequency | 1200 kHz ±240 kHz - enables compact 4.7-µH inductor and <10 µF ceramic capacitors |
| Peak Switch Current Limit | 600 mA typical - limits inductor/switch stress; supports ≥75 mA @ 3.3 V from 0.9 V input |
| Quiescent Current | 19 µA typical - enables multi-year battery life in always-on sensor nodes powered by coin cells |
| Efficiency (Peak) | 90% - achieved at mid-load (e.g., 30 mA @ 3.3 V, VIN = 1.2 V); >85% maintained down to 100 µA load in power-save mode |
| Shutdown Current | 0.05 µA typical - isolates load from battery; prevents drain in storage or standby states |
Pinout & Package
TPS61070DDCR is housed in a 6-pin thin SOT-23 (DDC) package measuring 2.90 mm × 1.60 mm with 0.95-mm pitch, optimized for space-constrained portable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Boost switch node | Connects to inductor and internal NMOS switch; carries pulsed high-current switching waveform |
| EN | Enable control input | Active-high logic: ≥0.8×VBAT enables regulator; ≤0.2×VBAT disables with full load disconnect |
| GND | Power and signal ground | Common return path for switch current, feedback, and control logic; must be low-impedance |
| VOUT | Regulated output | Delivers boosted DC voltage; connects to output capacitor and load; isolated from VBAT during shutdown |
| VBAT | Main power input | Accepts 0.9–5.5 V battery or rail; supplies internal LDOs, gate drivers, and control circuitry |
| FB | Feedback input | Senses output via resistor divider; regulates VOUT to 500 mV reference; input bias current = 0.01 µA |
Key Features
| Feature | Design Value |
|---|---|
| 90% efficient synchronous rectification | Replaces lossy Schottky diode with integrated PMOS rectifier - reduces conduction loss and enables >75 mA output from 0.9 V |
| Power-save mode | Automatically engages below ~10 mA load to maintain >85% efficiency - eliminates need for external enable sequencing |
| Complete load disconnect | Backgate diode isolation cuts off leakage path from VBAT to VOUT during shutdown - ensures zero battery drain in storage |
| Integrated 600-mA switch | Eliminates external MOSFET; supports 4.7-µH inductors and standard 10-µF ceramic caps - reduces BOM count by ≥3 components |
| 0.8-V undervoltage lockout | Prevents erratic operation during deep battery discharge - guarantees clean startup only when VBAT ≥ 0.8 V |
Applications
| Portable Audio Players | Personal Medical Devices |
|---|---|
Use Scenario: Powering audio codec and flash memory in battery-operated MP3 players using single AA/AAA alkaline cells. IC Role / Device Role / Timing Role: Primary 3.3-V boost regulator delivering up to 75 mA while supporting battery discharge down to 0.9 V. Use Value: Extends playback time by 22% vs. non-power-save boosters; eliminates need for discrete load switches or battery monitoring ICs. |
Use Scenario: Supplying regulated 3.3 V to glucose meters and pulse oximeters powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Ultra-low-quiescent (19 µA) boost converter enabling multi-year shelf life and reliable startup at 0.9 V. Use Value: Achieves >85% efficiency at 100 µA load - critical for intermittent-sampling medical sensors with strict battery lifetime requirements. |
| Cellular Phones (Feature Phones) | White LED Lighting |
Use Scenario: Generating 5 V for SIM card interface and backlight drivers in legacy GSM handsets using single Li-ion cells. IC Role / Device Role / Timing Role: Adjustable-output boost IC configured for 5 V/200 mA operation from 3.3-V rail or 3.6-V Li-ion source. Use Value: Delivers 90% peak efficiency at 100 mA - reduces thermal load on compact PCBs without requiring heatsinking. |
Use Scenario: Driving 3-series white LEDs (9.6 V total) from 2.4-V NiMH battery packs in portable lighting tools. IC Role / Device Role / Timing Role: High-efficiency boost converter programmed to 10 V with tight output regulation (±3% total accuracy). Use Value: Maintains constant LED brightness across full battery discharge curve (2.4 V → 1.0 V) without flicker or dimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61071DDCR | No power-save mode; fixed 1.2-MHz PWM only - higher light-load quiescent current (30 µA vs. 19 µA) | Better suited for constant-load applications where efficiency at 10–100 mA matters more than microamp standby | Select TPS61071DDCR if system load never drops below 5 mA and predictable switching frequency is required for EMI filtering. |
| MAX17065ETA+ | Higher 2-MHz switching frequency; 1.2-A switch; wider 0.7–5.5 V input range - but requires external compensation | Enables smaller inductors (2.2 µH) and faster transient response; targets higher-current portable designs (>150 mA) | Choose MAX17065ETA+ only if output current exceeds 100 mA or input must operate below 0.9 V - not a drop-in replacement. |
Compared with TPS61071DDCR and MAX17065ETA+, the TPS61070DDCR uniquely balances ultra-low-input capability (0.9 V), integrated power-save mode, and minimal external component count - making it optimal for cost-sensitive, battery-lifetime-critical single-cell applications where 75 mA output suffices.
Availability
TPS61070DDCR is available at Aetrix Electronics and suitable for portable audio players, personal medical devices, feature phones, and white LED lighting requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TPS61070DDCR 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 technologies - serving industrial, automotive, and consumer markets with high-reliability silicon solutions.
The TPS6107x product line was engineered specifically for ultra-low-voltage battery-powered systems, enabling reliable power conversion from near-dead alkaline, NiMH, and Li-ion cells without external support circuitry.
FAQ
What is the minimum input voltage required for TPS61070DDCR to start up and regulate?
The TPS61070DDCR requires a minimum input voltage of 1.1 V to initiate startup under typical conditions (RL = 270 Ω). Once running, it sustains regulation down to 0.9 V input - enabling full utilization of single-cell alkaline batteries until terminal discharge. Startup behavior is confirmed per TI SLVS510E datasheet Section 8.5, with no external components needed to achieve this threshold.
Does TPS61070DDCR support adjustable output voltage, and how is it configured?
Yes, TPS61070DDCR 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, R1 and R2 values are calculated per Equation 1 in the datasheet - e.g., R2 = 200 kΩ and R1 = 1 MΩ yields 3.3 V. The TPS61070DDCR's FB pin draws only 0.01 µA, ensuring minimal divider current error.
How does TPS61070DDCR achieve load disconnect during shutdown?
The TPS61070DDCR uses a proprietary backgate diode isolation technique: when EN is low, the cathode of the internal high-side PMOS rectifier is disconnected from its source, breaking the parasitic conduction path. This ensures true zero-load current - measured at 0.05 µA shutdown current - preventing battery drain in storage or standby, unlike conventional synchronous boosters.
What inductor value is recommended for TPS61070DDCR in a 3.3-V, 75-mA application?
Texas Instruments recommends a 4.7-µH inductor (e.g., Wurth 744031004) for TPS61070DDCR in 3.3-V/75-mA designs. This value balances peak current margin (≤600 mA switch limit), output ripple (<10 mV), and transient response. The TPS61070DDCR is characterized for stable operation with inductors from 2.2 µH to 10 µH - all verified in TI's SLVS510E application report.
Is TPS61070DDCR RoHS-compliant and qualified for industrial temperature range?
Yes, TPS61070DDCR is RoHS-compliant and rated for industrial temperature operation from –40 °C to +85 °C ambient (junction range –40 °C to +125 °C). Thermal metrics including RθJA = 139.1 °C/W are published in Section 8.4 of the SLVS510E datasheet, confirming suitability for unheated enclosures in medical and portable industrial equipment.
TPS61070DDCR 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:
- 1.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS61070DDCR FAQ
1.How can I place an order for TPS61070DDCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61070DDCR 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 TPS61070DDCR reliable?
The price and inventory of TPS61070DDCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61070DDCR is usually 5 days.
3.What payment methods are accepted for TPS61070DDCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61070DDCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61070DDCR?
TPS61070DDCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61070DDCR 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 TPS61070DDCR?
For technical support, including TPS61070DDCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61070DDCR requirements.
6.How does Aetrix verify that TPS61070DDCR is sourced from the original manufacturer or authorized distributors?
All TPS61070DDCR 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 TPS61070DDCR meets industry standards.
7.What is the process for return or replacement of TPS61070DDCR?
All TPS61070DDCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61070DDCR, 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 TPS61070DDCR part is unused and in its original packaging.
Return procedure for TPS61070DDCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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