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Texas Instruments REG710NA-3.3/250G4
- Part No.:
- REG710NA-3.3/250G4
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
REG710NA-3.3/250G4.pdf
- Description:
- IC REG CHARGE PUMP 3.3V SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,583
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Product details
Overview
REG710NA-3.3/250G4 from Texas Instruments is a fixed 3.3 V, 60-mA buck-boost switched-capacitor voltage regulator in SOT-23-6 package. It operates across 1.8 V–5.5 V input, delivers low-ripple output without inductors, and automatically switches between step-up and step-down modes - ideal for powering 3.3 V logic rails in battery-powered handheld devices with variable supply voltage.
For engineers reviewing the REG710NA-3.3/250G4 datasheet, REG710NA-3.3/250G4 pinout, REG710NA-3.3/250G4 application, or REG710NA-3.3/250G4 equivalent, key selection criteria include input voltage range compatibility (1.8 V–5.5 V), 3.3 V output tolerance (±6.7% over temperature), 65 μA quiescent current, thermal shutdown at 160°C, and SOT-23-6 footprint constraints.
Technical Context
The REG710NA-3.3/250G4 uses a 1-MHz internal oscillator to drive a charge-pump topology with automatic mode switching: it operates in buck mode when VIN > 4.0 V and boost mode when VIN < 4.0 V, maintaining regulation across both regions. Internal FETs (Q1–Q4) reconfigure CPUMP polarity per half-cycle to either subtract or add VIN to CPUMP voltage.
It integrates enable-controlled shutdown (ISD = 0.01 μA), thermal protection (trip at 160°C, recover at 140°C), and current limiting (Isc = 100 mA). Output ripple is specified at 35 mVPP under 30 mA load with 2.2 μF ceramic COUT and 0.22 μF CPUMP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V (±6.7% over –40°C to +85°C; min/max 3.1 V/3.5 V) |
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V) and multi-cell alkaline/nickel chemistries |
| Max Output Current | 60 mA - sustained delivery with VIN ≥ 3.3 V; derates below 2.2 V input |
| Quiescent Current | 65 μA - enables ultra-low-power operation in always-on subsystems |
| Shutdown Current | 0.01 μA - reduces system standby power to sub-nW levels |
| Output Ripple | 35 mVPP - measured at 30 mA load with 2.2 μF X7R COUT and 0.22 μF CPUMP |
| Switching Frequency | 1 MHz - enables use of small 0805/1206 ceramic capacitors; no EMI-sensitive inductors required |
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/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply | Accepts 1.8 V–5.5 V unregulated source; requires local 2.2 μF ceramic decoupling |
| VOUT | Regulated output | Delivers fixed 3.3 V; connects to 2.2 μF ceramic output capacitor and load |
| GND | Ground reference | Common return for input, output, and pump paths; must be low-impedance plane |
| Enable | Hardware control input | Active-high logic (1.3 V threshold); pulls low to enter 0.01 μA shutdown state |
| Cpump+ | Flying capacitor positive terminal | Connects to one side of 0.22 μF ceramic flying capacitor (CPUMP) |
| Cpump− | Flying capacitor negative terminal | Connects to other side of 0.22 μF ceramic flying capacitor; polarity reverses per switching phase |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost mode switching | Seamlessly transitions at VIN ≈ 4.0 V; maintains regulation without external mode control or firmware |
| No-inductor DC-DC conversion | Eliminates magnetic components, reducing EMI, board area, and BOM cost vs. inductive buck-boost regulators |
| Low input current ripple | Peak input current limited internally; minimizes stress on battery or LDO upstream and eases input capacitor selection |
| Thermal and current protection | Shuts down at 160°C junction temp and limits short-circuit current to 100 mA - protects IC and downstream circuitry |
| Minimal external components | Only three 0805/1206 ceramic caps required (CIN, COUT, CPUMP); no resistors, diodes, or compensation networks |
Applications
| White LED Driver | Smart Card Reader Power |
|---|---|
Use Scenario: Driving 1–3 white LEDs from a single Li-ion cell (2.7–4.2 V) in portable payment terminals. IC Role / Device Role / Timing Role: REG710NA-3.3/250G4 provides stable 3.3 V bias for LED driver IC and microcontroller logic, compensating for battery voltage sag during discharge. Use Value: Enables consistent LED brightness and MCU operation across full battery range without requiring separate boost converter or LDO staging. |
Use Scenario: Supplying 3.3 V to ISO 7816-compliant smart card interface in handheld POS devices. IC Role / Device Role / Timing Role: REG710NA-3.3/250G4 acts as the primary regulated rail for card detection, protocol logic, and level-shifting circuitry. Use Value: Delivers low-noise, fast-transient 3.3 V power with <1 μA shutdown current - critical for meeting EMVCo battery life requirements. |
| LCD Display Bias | Battery Backup Supply |
Use Scenario: Generating 3.3 V for segment LCD controller and glass bias in medical wearables with coin-cell backup. IC Role / Device Role / Timing Role: REG710NA-3.3/250G4 supplies main logic voltage while enabling seamless switchover to backup source via external diode-OR. Use Value: Maintains display functionality during main battery depletion; 65 μA IQ extends coin-cell life beyond 1 year in typical usage. |
Use Scenario: Providing regulated 3.3 V to RTC and SRAM in industrial controllers during AC mains failure. IC Role / Device Role / Timing Role: REG710NA-3.3/250G4 conditions power from supercapacitor or backup Li coin cell (1.8–3.6 V) to meet 3.3 V logic requirements. Use Value: Supports wide-input backup sources without efficiency penalty; 35 mVPP ripple avoids RTC timing jitter or SRAM bit errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60403DBVR | 3.3 V output, 60 mA, 1.8–5.5 V input, but uses different charge-pump architecture (dual-output capable); higher 100 μA IQ | Supports dual-rail outputs (e.g., ±3.3 V); less suitable for space-constrained single-rail designs | Choose TPS60403DBVR only if dual-output capability or tighter output accuracy (±2%) is required |
| MAX680ESA+ | 3.3 V output, 25 mA max, 2.7–6.5 V input; fixed-frequency 10 kHz oscillator; requires larger external caps | Lower output current and lower efficiency above 10 mA; not suitable for >30 mA loads | Choose MAX680ESA+ only for legacy designs where 10 kHz frequency simplifies EMI filtering |
Compared with TPS60403DBVR and MAX680ESA+, the REG710NA-3.3/250G4 offers superior efficiency above 10 mA, lowest quiescent current in its class, and smallest PCB footprint - making it optimal for high-density, battery-sensitive 3.3 V point-of-load regulation.
Availability
REG710NA-3.3/250G4 is available at Aetrix Electronics and suitable for smart card readers, handheld medical devices, LCD modules, and battery-backed real-time clocks requiring stable component supply and long-lifecycle support.
Supply support for REG710NA-3.3/250G4 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 and embedded processing solutions, with decades of expertise in power management ICs and precision analog design.
The REG710 family was designed specifically for low-power, inductorless voltage conversion in space- and energy-constrained portable electronics - targeting applications where input voltage varies above and below the required output.
FAQ
What is the minimum input voltage required for REG710NA-3.3/250G4 to start up and regulate?
The REG710NA-3.3/250G4 has a tested startup voltage of 1.8 V across its full operating temperature range (–40°C to +85°C). It begins regulating at this threshold and maintains stable 3.3 V output as long as input remains within 1.8 V–5.5 V. Startup behavior is verified per TI's SBAS221H datasheet Section 7.3.
Does REG710NA-3.3/250G4 require external compensation components?
No, REG710NA-3.3/250G4 is fully internally compensated. Its charge-pump control loop requires no external resistors, capacitors, or feedback dividers - only three ceramic capacitors (CIN, COUT, CPUMP) are needed for operation, as confirmed in the Typical Operating Circuit (Figure 7) and Section 9.2.2.1 of the datasheet.
Can REG710NA-3.3/250G4 be used in parallel to increase output current?
Yes, the REG710NA-3.3/250G4 supports paralleling - TI's datasheet Section 9.3.2 explicitly shows two REG710-3.3 devices configured in parallel to deliver up to 60 mA from 2.2 V–5.5 V input. Synchronization is not required; natural frequency variation ensures balanced current sharing without external clocking.
What is the thermal performance of REG710NA-3.3/250G4 in SOT-23-6 package?
In the SOT-23-6 (DDC) package, REG710NA-3.3/250G4 has a junction-to-ambient thermal resistance (RθJA) of 204.6°C/W. At 60 mA output and 3.3 V input, power dissipation is ~12 mW - resulting in <3°C junction rise above ambient under typical PCB layout, well below the 160°C thermal shutdown threshold.
Is REG710NA-3.3/250G4 RoHS compliant and lead-free?
Yes, REG710NA-3.3/250G4 is RoHS compliant and features lead-free NIPDAU (nickel/palladium/gold) terminal finish, as documented in TI's Packaging Information Addendum - orderable part marking "GAAI" corresponds to RoHS-compliant SOT-23-6 packaging with Level-1 moisture sensitivity rating.
REG710NA-3.3/250G4 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):
- 1.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- 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-3.3/250G4 FAQ
1.How can I place an order for REG710NA-3.3/250G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for REG710NA-3.3/250G4 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-3.3/250G4 reliable?
The price and inventory of REG710NA-3.3/250G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG710NA-3.3/250G4 is usually 5 days.
3.What payment methods are accepted for REG710NA-3.3/250G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG710NA-3.3/250G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG710NA-3.3/250G4?
REG710NA-3.3/250G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG710NA-3.3/250G4 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-3.3/250G4?
For technical support, including REG710NA-3.3/250G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG710NA-3.3/250G4 requirements.
6.How does Aetrix verify that REG710NA-3.3/250G4 is sourced from the original manufacturer or authorized distributors?
All REG710NA-3.3/250G4 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-3.3/250G4 meets industry standards.
7.What is the process for return or replacement of REG710NA-3.3/250G4?
All REG710NA-3.3/250G4 units undergo pre-shipment inspection (PSI). If there is an issue with REG710NA-3.3/250G4, 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-3.3/250G4 part is unused and in its original packaging.
Return procedure for REG710NA-3.3/250G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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