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Texas Instruments REG710NA-2.5/250
- Part No.:
- REG710NA-2.5/250
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
REG710NA-2.5/250.pdf
- Description:
- IC REG CHARGE PUMP 2.5V SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:706
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Product details
Overview
REG710NA-2.5/250 from Texas Instruments is a fixed 2.5 V output, buck-boost switched-capacitor DC-DC converter delivering up to 30 mA continuous output current with 2.35–2.65 V output voltage tolerance, 90% peak efficiency at light load, and operation across 1.8–5.5 V input range. It serves as a low-EMI, inductorless power supply for space-constrained battery-powered systems requiring stable low-voltage rail generation from variable single-cell sources.
For engineers reviewing the REG710NA-2.5/250 datasheet, REG710NA-2.5/250 pinout, REG710NA-2.5/250 application, or REG710NA-2.5/250 equivalent, key selection criteria include input voltage flexibility (1.8–5.5 V), automatic step-up/step-down mode switching above 3.2 V VIN, thermal shutdown at 160°C, 65 μA quiescent current, and SOT-23-6 package compatibility with minimal external components (three 0.22–2.2 μF ceramic capacitors).
Technical Context
The REG710NA-2.5/250 operates in automatic buck or boost mode depending on input voltage relative to its 2.5 V output: it enters step-down mode when VIN > 3.2 V and step-up mode when VIN < 3.2 V. Internal 1 MHz oscillator enables use of small ceramic flying, input, and output capacitors without inductors.
It integrates hardware enable control (EN pin), thermal shutdown (160°C trip, 140°C recovery), current limiting (~100 mA short-circuit), and low-noise regulation with ≤35 mVPP output ripple at 30 mA load. Quiescent current is 65 μA typical; shutdown current drops to 0.01 μA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5 V ±0.15 V (2.35–2.65 V) over –40°C to +85°C, enabling precise biasing of low-voltage logic or analog circuitry. |
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V), NiMH/alkaline (2–3.6 V), and USB-supplied (4.5–5.5 V) inputs without redesign. |
| Max Output Current | 30 mA continuous - sufficient for powering SIM cards, smart card readers, or LCD bias rails without thermal derating. |
| Efficiency | Up to 90% at 10 mA / VIN = 1.8 V - minimizes battery drain in always-on portable devices. |
| Quiescent Current | 65 μA typical - preserves battery life during standby in handheld or IoT edge nodes. |
| Shutdown Current | 0.01 μA typical - enables ultra-low-power system sleep states with full rail isolation. |
| Output Ripple | ≤35 mVPP at 30 mA - meets noise-sensitive analog supply requirements without additional LDO post-regulation. |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm body, 0.95 mm height) with exposed thermal pad for enhanced heat dissipation in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply | Accepts unregulated 1.8–5.5 V; connects directly to CIN (2.2 μF ceramic); must be decoupled within 2 mm for low EMI. |
| VOUT | Regulated output | Delivers fixed 2.5 V; connects to COUT (2.2 μF ceramic); supplies downstream logic or analog loads. |
| GND | Ground reference | Common return for input, output, and pump paths; ties to thermal pad for optimal thermal performance. |
| Enable | Hardware enable/disable | Active-high logic control (1.3–VIN V high, –0.2–0.4 V low); must not float; enables zero-load shutdown mode. |
| Cpump+ | Flying capacitor positive terminal | Connects to one side of CPUMP (0.22 μF ceramic); forms charge transfer path during boost/buck cycles. |
| Cpump− | Flying capacitor negative terminal | Connects to other side of CPUMP; alternates polarity with Cpump+ to achieve voltage doubling or halving. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost mode switching | Seamlessly transitions between step-down (>3.2 V VIN) and step-up (<3.2 V VIN) without external control or mode pins. |
| No inductor required | Reduces BOM cost, board area, and EMI emissions by using only three small ceramic capacitors instead of magnetics. |
| 1 MHz internal oscillator | Enables use of 0.22 μF flying capacitor and 2.2 μF input/output capacitors - ideal for ultra-thin portable designs. |
| Thermal and current protection | Shuts down at 160°C junction temperature and limits short-circuit current to ~100 mA, preventing damage under fault conditions. |
| Low input current ripple | Minimizes conducted EMI into upstream battery or PMIC rails, easing compliance with CISPR-22 Class B limits. |
Applications
| Smart Card Readers | LCD Display Bias |
|---|---|
|
Use Scenario: Powering ISO 7816-compliant smart card interfaces in point-of-sale terminals or secure authentication devices. IC Role / Device Role / Timing Role: Provides regulated 2.5 V supply to card VCC pin, meeting EMVCo voltage tolerance and transient response requirements. Use Value: Enables direct connection to 1.8–3.6 V battery or host rail without discrete LDO or inductor-based DC-DC, reducing solution size by >40%. |
Use Scenario: Generating stable 2.5 V bias for segment or dot-matrix LCD controllers in handheld medical instruments. IC Role / Device Role / Timing Role: Supplies clean, low-noise VDD to LCD driver ICs requiring tight voltage regulation and fast load-step response. Use Value: Delivers ≤35 mVPP ripple at 30 mA, eliminating need for post-filtering and supporting flicker-free display operation. |
| Modem Baseband Power | Battery Backup Supply |
|
Use Scenario: Providing auxiliary 2.5 V rail for modem baseband processors during cellular transmit bursts in asset trackers. IC Role / Device Role / Timing Role: Acts as secondary regulated supply that remains active during main PMIC brownout events. Use Value: Maintains 2.5 V output down to 1.8 V input, allowing continued modem operation from partially discharged Li-ion cells. |
Use Scenario: Backing up real-time clock (RTC) or SRAM in industrial PLCs during AC mains failure. IC Role / Device Role / Timing Role: Converts backup coin cell (2.0–3.0 V) to stable 2.5 V, ensuring data retention during extended outages. Use Value: Draws only 65 μA quiescent current and 0.01 μA in shutdown, extending CR2032 life to >5 years in backup mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60230RGTR | 2.5 V fixed output, 60 mA max, 1.6–5.5 V input, 1.2 MHz switching, requires same 3-capacitor topology. | Higher output current supports dual-rail LCD drivers; slightly higher IQ (90 μA) reduces battery runtime in ultra-low-power apps. | Choose TPS60230RGTR when >30 mA load or tighter input UVLO (1.6 V) is required; same PCB footprint not guaranteed. |
| MAX680ESA+ | 2.5 V output, 25 mA max, 2.0–6.0 V input, 10 kHz oscillator, dual-output (±2.5 V), requires 2× flying caps. | Generates complementary rails for op-amp biasing; lower frequency increases capacitor size and EMI; no shutdown pin. | Choose MAX680ESA+ only for bipolar supply needs; not drop-in due to different pinout, frequency, and control interface. |
Compared with REG710NA-2.5/250, TPS60230RGTR offers higher current but higher quiescent draw, while MAX680ESA+ provides dual-rail capability at the cost of larger capacitors and no enable control - making REG710NA-2.5/250 optimal for single-rail, space- and power-constrained 2.5 V applications.
Availability
REG710NA-2.5/250 is available at Aetrix Electronics and suitable for smart card readers, LCD display bias, modem baseband power, battery backup supplies, and handheld device power management requiring stable component supply and long-term lifecycle support.
Supply support for REG710NA-2.5/250 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, with decades of expertise in precision power conversion and low-power system design.
The REG710 family was designed specifically for battery-powered portable electronics needing compact, inductorless, wide-input-voltage DC-DC conversion - targeting applications where board space, EMI, and quiescent power are critical constraints.
FAQ
What is the minimum input voltage required for REG710NA-2.5/250 to start up and regulate?
The REG710NA-2.5/250 has a tested startup voltage of 1.8 V across all operating conditions. It maintains regulation down to this input level when delivering up to 30 mA, making it suitable for deeply discharged single-cell batteries. Startup behavior is verified per Electrical Characteristics table in the SBAS221H datasheet.
Does REG710NA-2.5/250 require an external resistor to set output voltage?
No. REG710NA-2.5/250 features a factory-trimmed, fixed 2.5 V output. No external feedback resistors are needed - the output voltage is internally programmed and specified as 2.35–2.65 V over temperature and load, simplifying design and reducing component count.
Can REG710NA-2.5/250 be used in parallel to increase output current?
Yes. The REG710NA-2.5/250 supports paralleling per TI Application Note SBAS221H Section 9.3.2. Two units can deliver up to 60 mA when VIN ≥ 2.2 V, provided Enable pins are tied together and layout balances trace impedance to avoid current imbalance.
What is the thermal performance of REG710NA-2.5/250 in SOT-23-6 package?
In the SOT-23-6 (DDC) package, REG710NA-2.5/250 has a junction-to-ambient thermal resistance (RθJA) of 204.6°C/W. With 30 mA load and 1.8 V input, typical power dissipation is ~15 mW, resulting in <4°C junction rise above ambient - well below the 160°C thermal shutdown threshold.
Is REG710NA-2.5/250 RoHS compliant and lead-free?
Yes. REG710NA-2.5/250 is RoHS compliant with lead finish/NiPdAu plating and meets JEDEC MSL Level-1 (260°C peak reflow). Full packaging and environmental data are documented in TI's Orderable Part Number Addendum dated 10-Dec-2025.
REG710NA-2.5/250 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 30mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
REG710NA-2.5/250 FAQ
1.How can I place an order for REG710NA-2.5/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for REG710NA-2.5/250 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 REG710NA-2.5/250 reliable?
The price and inventory of REG710NA-2.5/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG710NA-2.5/250 is usually 5 days.
3.What payment methods are accepted for REG710NA-2.5/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG710NA-2.5/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG710NA-2.5/250?
REG710NA-2.5/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG710NA-2.5/250 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 REG710NA-2.5/250?
For technical support, including REG710NA-2.5/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG710NA-2.5/250 requirements.
6.How does Aetrix verify that REG710NA-2.5/250 is sourced from the original manufacturer or authorized distributors?
All REG710NA-2.5/250 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 REG710NA-2.5/250 meets industry standards.
7.What is the process for return or replacement of REG710NA-2.5/250?
All REG710NA-2.5/250 units undergo pre-shipment inspection (PSI). If there is an issue with REG710NA-2.5/250, 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 REG710NA-2.5/250 part is unused and in its original packaging.
Return procedure for REG710NA-2.5/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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