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Texas Instruments REG710NA-3/250
- Part No.:
- REG710NA-3/250
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
REG710NA-3/250.pdf
- Description:
- IC REG CHRG PUMP 3V 30MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:819
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Product details
Overview
REG710NA-3/250 from Texas Instruments is a fixed 3.0 V output, switched-capacitor buck-boost charge pump DC-DC converter in SOT-23-6 package, supporting 1.8 V to 5.5 V input, delivering up to 30 mA regulated output with 35 mVPP ripple at 30 mA and 65 μA quiescent current - used in low-power SIM card and smart card reader power rails.
For engineers reviewing the REG710NA-3/250 datasheet, REG710NA-3/250 pinout, REG710NA-3/250 application, or REG710NA-3/250 equivalent, this page delivers verified electrical specs, thermal behavior, shutdown control logic, efficiency vs. load curves, and validated alternative options for battery-powered portable systems requiring compact, inductorless voltage regulation.
Technical Context
The REG710NA-3/250 operates in automatic step-up (boost) mode when VIN < 3.7 V and step-down (buck) mode when VIN > 3.7 V, using internal 1 MHz oscillator and flying capacitor (CPUMP) switching to maintain 3.0 V ±3% output regulation across full input range. It employs peak current limiting and cycle-skipping control to manage EMI and ripple.
Thermal protection activates at 160°C junction temperature with 20°C hysteresis, and shutdown mode reduces supply current to 0.01 μA when EN is pulled low. Input and output capacitors (CIN/COUT = 2.2 μF ceramic) and flying capacitor (CPUMP = 0.22 μF) are required external components - no inductor needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±3% (2.82–3.18 V), tightly regulated across 1.8–5.5 V input and 0–30 mA load |
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion, 2–3 cell alkaline/nickel chemistries without external LDO pre-regulation |
| Max Output Current | 30 mA continuous - sufficient for SIM card interface, smart card readers, and low-power LCD bias rails |
| Output Ripple | 35 mVPP at 30 mA - enables stable operation of sensitive analog circuitry without additional filtering |
| Quiescent Current | 65 μA typical - extends battery life in always-on standby applications such as modem sleep modes |
| Shutdown Current | 0.01 μA typical - allows deep power-down during host processor sleep states |
| Oscillator Frequency | 1 MHz - permits use of small 0.22 μF flying capacitor and 2.2 μF ceramic input/output caps |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm body, 0.95 mm height), thermally enhanced with exposed pad (not electrically connected in DDC variant); pin-compatible with REG710 family including REG710NA-2.5/2.7/3.3/5/5.5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply | Accepts 1.8–5.5 V unregulated source; connects to 2.2 μF input capacitor to suppress high-frequency switching transients |
| VOUT | Regulated output | Delivers stable 3.0 V to load; requires 2.2 μF ceramic output capacitor to meet 35 mVPP ripple spec at 30 mA |
| GND | Ground reference | Common return path for input, output, and flying capacitor circuits; must be low-impedance PCB plane |
| Enable | Hardware enable/disable | Active-high logic (1.3–VIN V); pulls low to enter 0.01 μA shutdown - must not float; ties directly to host GPIO or pull-up resistor |
| Cpump+ | Flying capacitor positive terminal | Switches between VIN and VOUT nodes during boost/buck phases; connects to 0.22 μF X7R/X5R ceramic capacitor |
| Cpump− | Flying capacitor negative terminal | Completes flying capacitor loop; connects to same 0.22 μF capacitor opposite Cpump+; critical for charge transfer efficiency |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost mode switching | Seamlessly transitions between step-up and step-down operation at VIN ≈ 3.7 V - eliminates need for manual mode selection or external control logic |
| No-inductor architecture | Reduces BOM count by eliminating magnetic components; lowers EMI emissions and simplifies layout in space-constrained handheld designs |
| Low input current ripple | Peak input current limited internally - minimizes stress on battery or source impedance, enabling direct connection to coin cells or weak supplies |
| Thermal and current limit protection | Shuts down at 160°C junction temp and limits short-circuit current to ~100 mA - prevents damage during hot-plug or fault conditions |
| Minimal external components | Only three 0402/0603 ceramic capacitors required (CIN, COUT, CPUMP) - accelerates design-in and reduces PCB area vs. inductive converters |
Applications
| Smart Card Readers | SIM Card Power Rails |
|---|---|
|
Use Scenario: Powering ISO 7816-compliant contact smart cards in point-of-sale terminals or secure authentication devices. IC Role / Device Role / Timing Role: Provides stable 3.0 V supply independent of host rail voltage (e.g., 3.3 V or 5 V MCU bus), compensating for battery droop or USB port variation. Use Value: Enables reliable card reset and communication at 3.0 V nominal per ISO standard, even when input drops to 1.8 V - avoids brownout resets during card insertion. |
Use Scenario: Supplying 3.0 V to GSM/UMTS/LTE SIM cards in mobile handsets, wearables, or IoT modules. IC Role / Device Role / Timing Role: Acts as dedicated SIM interface regulator, decoupled from main system PMIC to prevent noise coupling into RF-sensitive baseband circuits. Use Value: Delivers clean 3.0 V with <35 mVPP ripple at 10–20 mA load - meets ETSI TS 102 221 SIM voltage tolerance and ensures error-free AT command execution. |
| Handheld Diagnostic Tools | Low-Power LCD Bias Supplies |
|
Use Scenario: Powering microcontroller peripherals and sensors in portable medical or industrial test equipment running from single Li-ion cell. IC Role / Device Role / Timing Role: Generates regulated 3.0 V from 2.8–4.2 V battery range, enabling consistent ADC reference and sensor excitation voltage across discharge cycle. Use Value: Maintains 3.0 V output within ±3% over full battery range and load (0–30 mA), ensuring measurement repeatability without software calibration compensation. |
Use Scenario: Providing VDD/VSS bias for segment or character LCDs in battery-operated instrumentation or remote controls. IC Role / Device Role / Timing Role: Supplies low-noise 3.0 V to LCD driver ICs or integrated display modules requiring stable logic-level voltage independent of main system rail. Use Value: Eliminates visible flicker or contrast shift caused by input rail sag - achieves stable display performance even at 1.8 V battery cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REG710NA-3.3/250 | Fixed 3.3 V output; identical pinout, package, and operating range; 3.3 V ±3% (3.1–3.5 V) | Used where 3.3 V logic compatibility is required (e.g., interfacing with 3.3 V UART or SPI peripherals) | Select when target load requires 3.3 V instead of 3.0 V - no PCB change needed; verify load current remains ≤30 mA |
| TPS60403DBVR | 3.3 V output, 60 mA max, 1.8–5.5 V input, SOT-23-6; higher output current but 50 mVPP ripple at 60 mA | Better suited for higher-current loads like dual-SIM or multi-peripheral power domains | Choose when >30 mA is required; note higher ripple and different enable polarity (active-low) |
Compared with REG710NA-3/250, REG710NA-3.3/250 offers identical form-factor and thermal behavior but targets 3.3 V systems, while TPS60403DBVR trades lower ripple tolerance for doubled output current - both require validation of enable logic and load transient response in final design.
Availability
REG710NA-3/250 is available at Aetrix Electronics and suitable for smart card readers, SIM card interfaces, and handheld diagnostic tools requiring stable component supply with guaranteed long-term sourcing and RoHS-compliant packaging.
Supply support for REG710NA-3/250 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for portable and industrial applications.
The REG710 product line delivers compact, inductorless DC-DC conversion for battery-powered systems where board space, EMI, and quiescent current are critical - designed specifically for smart card, SIM, and low-power peripheral regulation.
FAQ
What is the input voltage range supported by the REG710NA-3/250?
The REG710NA-3/250 supports an input voltage range of 1.8 V to 5.5 V. This wide range accommodates single-cell Li-ion batteries (2.8–4.2 V), two-cell alkaline (2.4–3.2 V), or three-cell NiMH (3.0–4.2 V) without external pre-regulation. Operation is guaranteed across this range with output regulation maintained at 3.0 V ±3% for loads up to 30 mA.
How does the REG710NA-3/250 handle mode switching between buck and boost operation?
The REG710NA-3/250 automatically switches between step-down (buck) and step-up (boost) modes based on input voltage relative to output. For REG710NA-3/250, mode transition occurs near VIN = 3.7 V: below that, it operates in boost mode; above, in buck mode. No external control is needed - internal circuitry manages switching seamlessly to maintain 3.0 V output regulation.
What external components are required for basic operation of the REG710NA-3/250?
Three external ceramic capacitors are mandatory: 2.2 μF input capacitor (CIN) between VIN and GND, 2.2 μF output capacitor (COUT) between VOUT and GND, and 0.22 μF flying capacitor (CPUMP) between Cpump+ and Cpump−. All must be X7R or X5R dielectric in 0402 or 0603 package - no inductor or diode is required.
What is the shutdown current of the REG710NA-3/250, and how is shutdown activated?
The REG710NA-3/250 draws 0.01 μA typical shutdown current when the Enable pin is pulled low (≤0.4 V). Shutdown disconnects the output from the input and halts switching. The Enable pin must be actively driven - floating is not allowed. Pull-up resistors to VIN or direct GPIO control are common implementation methods.
Does the REG710NA-3/250 include built-in protection features?
Yes, the REG710NA-3/250 integrates thermal shutdown (activates at ~160°C junction temperature, recovers at ~140°C) and current limiting (~100 mA short-circuit output current). These protections safeguard the device and downstream circuitry during overload, overtemperature, or output fault conditions without requiring external circuitry.
REG710NA-3/250 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):
- 3V
- 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-3/250 FAQ
1.How can I place an order for REG710NA-3/250 through Aetrix?
Please submit a Request for Quotation (RFQ) for REG710NA-3/250 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-3/250 reliable?
The price and inventory of REG710NA-3/250 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG710NA-3/250 is usually 5 days.
3.What payment methods are accepted for REG710NA-3/250?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG710NA-3/250 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG710NA-3/250?
REG710NA-3/250 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG710NA-3/250 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-3/250?
For technical support, including REG710NA-3/250 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG710NA-3/250 requirements.
6.How does Aetrix verify that REG710NA-3/250 is sourced from the original manufacturer or authorized distributors?
All REG710NA-3/250 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-3/250 meets industry standards.
7.What is the process for return or replacement of REG710NA-3/250?
All REG710NA-3/250 units undergo pre-shipment inspection (PSI). If there is an issue with REG710NA-3/250, 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-3/250 part is unused and in its original packaging.
Return procedure for REG710NA-3/250:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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