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Texas Instruments REG710NA-3/3K
- Part No.:
- REG710NA-3/3K
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
REG710NA-3/3K.pdf
- Description:
- IC REG CHRG PUMP 3V 30MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,854
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Product details
Overview
REG710NA-3/3K from Texas Instruments is a fixed 3.0 V output, 60-mA buck-boost switched-capacitor DC-DC converter in SOT-23-6 package. It operates across 1.8 V to 5.5 V input, automatically switching between step-up and step-down modes to maintain regulation - enabling single-cell Li-ion or multi-cell alkaline/nickel-based battery-powered devices requiring stable 3 V rail. Typical quiescent current is 65 μA; shutdown current is <1 μA.
For engineers reviewing the REG710NA-3/3K datasheet, REG710NA-3/3K pinout, REG710NA-3/3K application, or REG710NA-3/3K equivalent, key selection criteria include input voltage range flexibility (1.8–5.5 V), automatic mode transition at VIN ≈ 3.7 V, low 35 mVPP output ripple at 30 mA, thermal shutdown at 160°C, and compatibility with ceramic capacitors only (CIN/COUT = 2.2 μF, CPUMP = 0.22 μF).
Technical Context
The REG710NA-3/3K implements a variable-frequency, capacitor-based topology without inductors, using internal FETs (Q1–Q4) to reconfigure CPUMP between charge and transfer phases. In buck mode (VIN > 3.7 V), Q2 switches while Q1/Q3 remain off; in boost mode (VIN < 3.7 V), complementary half-cycle switching of Q1/Q3 and Q2/Q4 enables voltage doubling.
Regulation is achieved by cycle-skipping at 1 MHz oscillator frequency; peak current limiting reduces EMI and input current ripple. Thermal protection disables output above 160°C and recovers at 140°C; current limit caps short-circuit output at 100 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±3% over load (10–30 mA) and temperature (–40°C to +85°C) |
| Input Voltage Range | 1.8 V to 5.5 V - supports single Li-ion (2.7–4.2 V), 2–3 cell alkaline/nickel (2.0–4.5 V) |
| Max Output Current | 30 mA continuous (60 mA peak); derates below VIN = 2.2 V |
| Quiescent Current | 65 μA typical at no load - enables ultra-low-power battery operation |
| Output Ripple | 35 mVPP at 30 mA load - requires X7R/X5R ceramic COUT ≥2.2 μF for spec compliance |
| Shutdown Current | 0.01 μA typical - enables <1 μA system standby when EN = low |
| Thermal Shutdown | Triggers at 160°C junction; auto-recovers at 140°C - protects against sustained overload |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm body, 0.95 mm max height), thermally enhanced with exposed pad (DRV variant not applicable to REG710NA-3/3K per orderable addendum; DDC package confirmed).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply | Connects to input capacitor (2.2 μF ceramic); accepts 1.8–5.5 V unregulated source |
| VOUT | Regulated output | Delivers fixed 3.0 V; requires 2.2 μF ceramic output capacitor for ripple spec |
| GND | Ground reference | Common return for input/output/pump paths; must be low-impedance PCB plane |
| Enable | Hardware control input | Active-high logic (1.3 V min); pulls low to reduce IQ to 0.01 μA - must not float |
| Cpump+ | Flying capacitor terminal (+) | Connects to positive side of 0.22 μF ceramic pump capacitor (CPUMP) |
| Cpump− | Flying capacitor terminal (−) | Connects to negative side of 0.22 μF ceramic pump capacitor - forms charge-transfer path |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost mode switching | Seamlessly transitions at VIN ≈ 3.7 V - eliminates external mode control logic |
| No inductor required | Reduces EMI, saves board space, lowers BOM cost - uses only three ceramic capacitors |
| 1 MHz internal oscillator | Enables use of small 0.22 μF flying capacitor and 2.2 μF input/output ceramics |
| Low input current ripple | Peak current limiting minimizes conducted EMI - critical for noise-sensitive RF sections |
| Thermal + current protection | Prevents damage during short-circuit or high-temp operation - no external circuitry needed |
Applications
| White LED Driver | Smart Card Reader |
|---|---|
Use Scenario: Powering 1–3 white LEDs from a single Li-ion cell (2.7–4.2 V) with constant current via external resistor. IC Role / Device Role / Timing Role: Provides regulated 3.0 V rail to bias LED string; handles input voltage sag during discharge. Use Value: Eliminates need for inductor-based boost converter - reduces solution size by >40% and EMI filtering complexity. |
Use Scenario: Supplying 3.0 V to ISO/IEC 7816-compliant smart card interface in portable payment terminals. IC Role / Device Role / Timing Role: Generates stable 3.0 V from varying battery input (2.0–5.5 V); enables fast enable/disable during card insertion/removal. Use Value: Achieves <1 μA shutdown current - extends battery life in intermittent-use handheld readers. |
| LCD Display Bias | Battery Backup Supply |
Use Scenario: Powering segment or dot-matrix LCD modules requiring precise 3.0 V in wearables and medical monitors. IC Role / Device Role / Timing Role: Delivers low-noise, low-ripple 3.0 V rail; maintains regulation during battery voltage drop below 3.0 V. Use Value: 35 mVPP ripple ensures stable contrast and eliminates visible flicker in high-resolution displays. |
Use Scenario: Providing clean 3.0 V backup to RTC or SRAM during main power failure in industrial controllers. IC Role / Device Role / Timing Role: Acts as hold-up regulator from coin cell or supercapacitor (1.8–3.3 V input). Use Value: 65 μA operating IQ extends backup runtime by >2× vs. LDO alternatives with similar dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REG710NA-3.3/3K | Fixed 3.3 V output; same package, pinout, and specs except VOUT and mode-switch threshold (VIN ≈ 4.0 V) | Used where 3.3 V logic rail required instead of 3.0 V - not interchangeable without board revision | Select REG710NA-3/3K only when system-level 3.0 V tolerance (±3%) and 3.7 V mode-switch point are required. |
| TPS60403DBVR | 3.3 V output, 60 mA, 1.8–5.5 V input, but uses different charge-pump architecture (fixed-frequency, no auto-buck/boost) | Lacks automatic mode switching - requires VIN > VOUT for regulation; less flexible for wide-input battery apps | Choose TPS60403DBVR only if fixed 3.3 V and simpler control (no EN pin needed) outweigh input-range limitations. |
Compared with REG710NA-3.3/3K, the REG710NA-3/3K provides tighter 3.0 V regulation for legacy 3 V logic; versus TPS60403DBVR, it delivers true buck-boost operation essential for single-cell Li-ion systems where VIN crosses VOUT during discharge.
Availability
REG710NA-3/3K is available at Aetrix Electronics and suitable for white LED drivers, smart card readers, LCD display bias, and battery backup supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for REG710NA-3/3K 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 delivering analog and embedded processing solutions, with leadership in power management ICs since 1980.
The REG710 family was designed specifically for low-power, inductorless voltage conversion in space-constrained portable electronics - targeting battery-powered devices needing regulated rails from highly variable input sources.
FAQ
What is the exact output voltage tolerance of the REG710NA-3/3K under full load and temperature range?
The REG710NA-3/3K delivers 3.0 V output with ±3% tolerance across –40°C to +85°C ambient temperature and 10–30 mA load current, as verified in Electrical Characteristics Table (Section 7.5). At 10 mA and 25°C, typical output is 3.0 V; minimum is 2.82 V and maximum is 3.18 V - meeting tight 3 V logic requirements without external trimming.
Does the REG710NA-3/3K require external components beyond capacitors, and what are their critical specifications?
Yes - the REG710NA-3/3K requires exactly three external ceramic capacitors: CIN = 2.2 μF, COUT = 2.2 μF, and CPUMP = 0.22 μF. All must be X7R or X5R dielectric, surface-mount, with ESR < 0.1 Ω. Leaded or tantalum capacitors increase ripple and are not compliant with the 35 mVPP specification. No resistors, diodes, or inductors are needed.
At what input voltage does the REG710NA-3/3K switch between buck and boost modes?
The REG710NA-3/3K switches from boost to buck mode at approximately VIN = 3.7 V, as documented in Table 1 (Device Functional Modes). Below 3.7 V, it operates in step-up mode to maintain 3.0 V output; above 3.7 V, it operates in step-down mode. This threshold is fixed per device variant and not adjustable.
Can the REG710NA-3/3K be used in parallel to increase output current, and what are the layout constraints?
Yes - two REG710NA-3/3K units can be paralleled to deliver up to 60 mA, as shown in Figure 22. Critical layout constraints include matched trace lengths from each IC's VIN/VOUT/GND pins to shared bulk capacitors, independent Cpump networks, and synchronized Enable signals. Unequal routing causes current imbalance and thermal stress.
Is the REG710NA-3/3K compatible with lithium thionyl chloride (LiSOCl₂) primary batteries that output up to 3.6 V nominal?
Yes - the REG710NA-3/3K supports input voltages up to 5.5 V, making it fully compatible with LiSOCl₂ cells (nominal 3.6 V, open-circuit up to 3.9 V). Its 1.8 V minimum input also accommodates deep discharge down to ~2.0 V, and its automatic buck-boost operation ensures stable 3.0 V output across the entire battery voltage curve without external supervision.
REG710NA-3/3K 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-3/3K FAQ
1.How can I place an order for REG710NA-3/3K through Aetrix?
Please submit a Request for Quotation (RFQ) for REG710NA-3/3K 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-3/3K reliable?
The price and inventory of REG710NA-3/3K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG710NA-3/3K is usually 5 days.
3.What payment methods are accepted for REG710NA-3/3K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG710NA-3/3K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG710NA-3/3K?
REG710NA-3/3K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG710NA-3/3K 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-3/3K?
For technical support, including REG710NA-3/3K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG710NA-3/3K requirements.
6.How does Aetrix verify that REG710NA-3/3K is sourced from the original manufacturer or authorized distributors?
All REG710NA-3/3K 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-3/3K meets industry standards.
7.What is the process for return or replacement of REG710NA-3/3K?
All REG710NA-3/3K units undergo pre-shipment inspection (PSI). If there is an issue with REG710NA-3/3K, 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-3/3K part is unused and in its original packaging.
Return procedure for REG710NA-3/3K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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