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Texas Instruments REG710NA-5/250G4
- Part No.:
- REG710NA-5/250G4
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
REG710NA-5/250G4.pdf
- Description:
- IC REG CHRG PUMP 5V 30MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,122
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Product details
Overview
REG710NA-5/250G4 from Texas Instruments is a fixed 5-V, 60-mA buck-boost switched-capacitor voltage regulator in SOT-23-6 package. It operates across 2.7 V to 5.5 V input, delivers low-ripple output without inductors, and automatically switches between step-up and step-down modes-enabling stable power for battery-powered SIM cards and smart card readers.
For engineers reviewing the REG710NA-5/250G4 datasheet, REG710NA-5/250G4 pinout, REG710NA-5/250G4 application, or REG710NA-5/250G4 equivalent, key selection criteria include input voltage range (2.7–5.5 V), output current capability (30 mA continuous, 60 mA peak), shutdown quiescent current (<1 µA), thermal protection (160°C trip), and compatibility with 0.22 µF flying capacitor.
Technical Context
The REG710NA-5/250G4 uses a 1-MHz internal oscillator to drive charge-pump switching, enabling use of small ceramic capacitors (CIN = COUT = 2.2 µF, CPUMP = 0.22 µF). Its dual-mode operation-step-down when VIN > VOUT and step-up when VIN < VOUT-is fully automatic and requires no external control logic.
Internal protection includes thermal shutdown (160°C trip, 140°C recovery) and current limiting (100 mA short-circuit current). The EN pin provides hardware enable/disable control with logic-high threshold ≥1.3 V and sub-100 nA input leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±3% (ensures stable supply for 5-V logic interfaces and LED biasing) |
| Input Voltage Range | 2.7 V to 5.5 V (supports single-cell Li-ion, 2–3 alkaline/NiMH, and USB-adjacent rails) |
| Max Output Current | 30 mA continuous / 60 mA peak (sufficient for SIM card power, white LED strings, or PCMCIA I/O) |
| Quiescent Current | 65 µA typical (minimizes battery drain in always-on portable devices) |
| Shutdown Current | 0.01 µA typical (enables ultra-low-power sleep states in handheld modems) |
| Output Ripple | 35 mVPP at 30 mA load (meets noise requirements for analog sensor bias and LCD segment drivers) |
| Switching Frequency | 1 MHz (permits compact 0.22 µF flying capacitor and avoids audible EMI in consumer audio systems) |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm body, 0.95 mm height), thermally enhanced with exposed pad (DDC variant). Pin numbering follows standard top-view orientation with pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply | Connects to unregulated source (e.g., battery); must be decoupled with 2.2 µF ceramic capacitor |
| VOUT | Regulated output | Delivers fixed 5 V; requires 2.2 µF ceramic output capacitor for ripple suppression |
| Enable | Digital control input | Active-high logic (≥1.3 V enables regulator; ≤0.4 V disables and reduces IQ to 0.01 µA) |
| GND | Power ground | Common reference for input/output; must be low-impedance connection to PCB ground plane |
| Cpump+ | Flying capacitor terminal (+) | Connects to positive side of 0.22 µF flying capacitor; carries high-frequency switching current |
| Cpump− | Flying capacitor terminal (−) | Connects to negative side of 0.22 µF flying capacitor; completes charge-transfer path |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor DC-DC conversion | Eliminates magnetic components and associated EMI, reducing BOM cost and board area by >30% vs. inductor-based solutions |
| Automatic mode switching | Seamlessly transitions between buck and boost without external configuration-critical for variable battery voltage applications |
| Low input current ripple | Reduces stress on battery cells and extends runtime in energy-constrained devices like smart cards |
| Thermal + current protection | Prevents damage during overload or ambient temperature rise; auto-recovery at 140°C ensures system resilience |
| Minimal external components | Only three capacitors required (CIN, COUT, CPUMP)-simplifies layout and accelerates time-to-market |
Applications
| Smart Card Readers | SIM Card Power Supply |
|---|---|
|
Use Scenario: Powering ISO 7816-compliant contact smart cards in point-of-sale terminals and access control readers. IC Role / Device Role / Timing Role: Provides regulated 5 V supply independent of host rail (e.g., 3.3 V MCU bus), enabling full-voltage card initialization and secure transaction sequences. Use Value: Ensures reliable card reset and protocol handshaking even as battery voltage drops below 3.3 V-eliminating need for separate LDO or boost converter. |
Use Scenario: Delivering stable 5 V to GSM/UMTS/LTE SIM cards in mobile handsets and IoT modules. IC Role / Device Role / Timing Role: Acts as dedicated SIM interface power rail, isolated from noisy RF/baseband domains and compliant with ETSI TS 102 221 timing margins. Use Value: Maintains SIM VCC within ±5% tolerance across 2.7–4.2 V battery range, preventing communication timeouts during call setup or data sessions. |
| Handheld Modems | LCD Display Bias |
|
Use Scenario: Supplying 5 V to RS-232 transceivers and modem controller ICs in portable data terminals. IC Role / Device Role / Timing Role: Generates clean 5 V from shared 3.3 V system rail or primary battery, supporting fast wake-up from deep-sleep states. Use Value: Achieves <1 µA shutdown current and <100 µs startup time-meeting 3GPP modem power-state transition requirements. |
Use Scenario: Providing 5 V bias for STN or segment LCD backplanes in medical monitors and industrial HMIs. IC Role / Device Role / Timing Role: Supplies low-noise, ripple-controlled voltage to LCD common electrode drivers, minimizing flicker and ghosting artifacts. Use Value: 35 mVPP ripple at 30 mA load meets ISO 13485 display stability thresholds for clinical-grade visualization. |
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 |
|---|---|---|---|
| REG71050DDCR | Same 5-V output, identical SOT-23-6 (DDC) package, but rated for -40°C to +85°C industrial temp range; same electrical specs and pinout. | Identical functional replacement; differs only in packaging marking and tape-and-reel quantity (3000 vs. 250). | Select REG71050DDCR for volume production requiring standard reel size and broader temperature qualification. |
| MAX680ESA+ | 5-V output, ±1.5% accuracy, 100-mA max output, SO-8 package; requires two 10-µF flying caps and lacks auto-buck/boost mode. | Higher current but larger footprint and fixed-step-up only-requires VIN < VOUT, limiting battery voltage flexibility. | Choose MAX680ESA+ only if >60 mA output is mandatory and input stays below 4.5 V; otherwise REG710NA-5/250G4 offers superior integration. |
Compared with REG71050DDCR, REG710NA-5/250G4 shares identical electrical behavior but ships in 250-unit small tape-and-reel-ideal for prototyping and low-volume builds. Against MAX680ESA+, REG710NA-5/250G4 delivers better battery voltage adaptability, smaller size, and lower component count despite lower peak current.
Availability
REG710NA-5/250G4 is available at Aetrix Electronics and suitable for smart card readers, SIM card power supplies, and handheld modems requiring stable component supply with rapid lead times and consistent lot traceability.
Supply support for REG710NA-5/250G4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The REG710 family was designed specifically for space-constrained, battery-powered applications needing regulated voltage from variable sources-targeting smart cards, SIM interfaces, and portable displays where inductor-free operation is critical.
FAQ
What is the minimum input voltage required for REG710NA-5/250G4 to start up and regulate 5 V output?
The REG710NA-5/250G4 requires a minimum input voltage of 2.7 V to initiate startup and maintain regulation at 5 V output. Below this threshold, the device cannot sustain output voltage under load. This specification is explicitly defined in the Recommended Operating Conditions table of the SBAS221H datasheet and verified across temperature and process corners.
Does REG710NA-5/250G4 support true bidirectional voltage conversion (i.e., both buck and boost) without external circuitry?
Yes, REG710NA-5/250G4 performs automatic buck-boost operation without external mode control. When VIN exceeds 5 V, it operates in step-down mode; when VIN falls below 5 V (but ≥2.7 V), it switches to step-up mode-all internally managed. This behavior is confirmed in Section 8.1 Overview and Figure 5–6 of the SBAS221H datasheet.
What is the maximum continuous output current for REG710NA-5/250G4 at 85°C ambient temperature?
At TA = 85°C, the REG710NA-5/250G4 supports 30 mA continuous output current while maintaining regulation and thermal safety. This value is specified in the Electrical Characteristics table under "IOUT ≤30 mA" test conditions and validated with thermal derating curves in Section 7.5 of SBAS221H.
Can REG710NA-5/250G4 be used in parallel to increase total output current?
Yes, the REG710NA-5/250G4 can be paralleled to double output current-e.g., two units deliver 60 mA at 5 V. Section 9.3.2 ("Doubling the Output Current") in SBAS221H confirms this configuration, specifying matched input/output capacitors and synchronized Enable signals for stable sharing.
What capacitor types and values are mandatory for stable operation of REG710NA-5/250G4?
Stable operation requires three ceramic capacitors: 2.2 µF X7R/X5R for CIN and COUT (1206 or 0805), and 0.22 µF X7R/X5R for CPUMP. These values are specified in the Typical Operating Circuit (Figure 7) and validated in Section 9.2.2.1. Tantalum or electrolytic capacitors are not recommended due to higher ESR-induced ripple.
REG710NA-5/250G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 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-5/250G4 FAQ
1.How can I place an order for REG710NA-5/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for REG710NA-5/250G4 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-5/250G4 reliable?
The price and inventory of REG710NA-5/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG710NA-5/250G4 is usually 5 days.
3.What payment methods are accepted for REG710NA-5/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG710NA-5/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG710NA-5/250G4?
REG710NA-5/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG710NA-5/250G4 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-5/250G4?
For technical support, including REG710NA-5/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG710NA-5/250G4 requirements.
6.How does Aetrix verify that REG710NA-5/250G4 is sourced from the original manufacturer or authorized distributors?
All REG710NA-5/250G4 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-5/250G4 meets industry standards.
7.What is the process for return or replacement of REG710NA-5/250G4?
All REG710NA-5/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with REG710NA-5/250G4, 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-5/250G4 part is unused and in its original packaging.
Return procedure for REG710NA-5/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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