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Texas Instruments REG710NA-2.7/3K
- Part No.:
- REG710NA-2.7/3K
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
REG710NA-2.7/3K.pdf
- Description:
- IC REG CHARGE PUMP 2.7V SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,814
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Product details
Overview
REG710NA-2.7/3K from Texas Instruments is a fixed-output 2.7 V switched-capacitor buck-boost charge pump IC delivering up to 30 mA output current with ±5% output voltage accuracy, 35 mVPP ripple at 30 mA, and 90% peak efficiency at light load. It operates across 1.8 V–5.5 V input, supports automatic step-up/step-down mode switching, and targets low-power portable systems requiring compact, inductorless DC-DC conversion.
For engineers reviewing the REG710NA-2.7/3K datasheet, REG710NA-2.7/3K pinout, REG710NA-2.7/3K application, or REG710NA-2.7/3K equivalent, key selection criteria include input voltage range compatibility (1.8–5.5 V), 2.7 V fixed output tolerance (±5%), shutdown current (<1 μA), thermal protection (160°C trip), and SOT-23-6 package constraints for space-constrained designs.
Technical Context
The REG710NA-2.7/3K implements a variable-frequency switched-capacitor topology with automatic mode selection: it operates in step-down (buck) mode when VIN > 3.4 V and switches to step-up (boost) mode below that threshold. Internal 1 MHz oscillator enables use of small 0.22 μF flying and 2.2 μF input/output ceramic capacitors.
Control logic includes active-high Enable pin with 1.3 V logic-high threshold, integrated thermal shutdown (160°C trip, 140°C recovery), and cycle-skipping regulation to maintain output stability across input and load transients. Quiescent current is 65 μA typical at no load; shutdown current drops to 0.01 μA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7 V ±5% - ensures stable bias for low-voltage logic, SIM cards, and LCD bias rails without external feedback. |
| Input Voltage Range | 1.8 V to 5.5 V - supports single-cell Li-ion (2.7–4.2 V), alkaline (1.8–3.0 V), and NiMH (2.0–3.6 V) battery sources directly. |
| Max Output Current | 30 mA continuous - sufficient for white LED backlighting (1–2 LEDs), smart card readers, and PCMCIA interface power. |
| Output Ripple | 35 mVPP at 30 mA - meets noise-sensitive analog supply requirements when using recommended 2.2 μF X7R ceramic capacitors. |
| Efficiency | 90% at 10 mA / VIN = 2.7 V - minimizes battery drain in always-on portable applications with light-to-moderate loads. |
| Quiescent Current | 65 μA typical - extends battery life in standby mode for handheld devices and modems between active sessions. |
| Shutdown Current | 0.01 μA typical - enables ultra-low-power system-level sleep states without external disconnect circuitry. |
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 spacing: 0.95 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply | Accepts 1.8–5.5 V unregulated source; requires 2.2 μF ceramic capacitor placed within 2 mm for EMI suppression. |
| VOUT | Regulated output | Delivers fixed 2.7 V ±5%; connects to 2.2 μF ceramic capacitor and load; sensitive to PCB trace inductance. |
| GND | Ground reference | Common return for input, output, and internal switching; must be low-impedance plane adjacent to exposed pad. |
| Enable | Hardware control input | Active-high logic (1.3 V min); drives device into <1 μA shutdown when pulled low; must not float. |
| Cpump+ | Flying capacitor positive terminal | Connects to one side of 0.22 μF ceramic flying capacitor; carries high-frequency AC current during charge transfer. |
| Cpump− | Flying capacitor negative terminal | Connects to other side of 0.22 μF flying capacitor; forms charge-pump loop with Cpump+ and internal FETs. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic buck-boost operation | Seamlessly transitions between step-up and step-down modes at VIN ≈ 3.4 V-eliminates need for external mode selection logic. |
| No inductor required | Uses only three external ceramic capacitors (CIN, COUT, CPUMP)-reduces BOM cost, board area, and EMI emissions vs. inductive converters. |
| Low input current ripple | Peak input current limited internally-reduces stress on battery cells and simplifies input filtering for portable applications. |
| Thermal and current limit protection | Shuts down at 160°C junction temperature and limits short-circuit current to ~100 mA-prevents damage during fault conditions. |
| 1-MHz internal oscillator | Enables use of 0.22 μF flying capacitor and 2.2 μF bulk capacitors-supports compact 2 mm² solution size with standard MLCCs. |
Applications
| Smart Card Readers | LCD Display Bias |
|---|---|
Use Scenario: Powering ISO 7816-compliant contact-based smart cards in point-of-sale terminals and access control units. IC Role / Device Role / Timing Role: Provides regulated 2.7 V supply to card VCC pin during active communication; enables direct connection to 1.8–3.6 V host battery rails. Use Value: Eliminates need for discrete LDO + boost converter combo; maintains compliance with card voltage tolerance (±5%) across full battery discharge curve. |
Use Scenario: Generating stable 2.7 V bias for segment LCD drivers in handheld medical meters and industrial HMI panels. IC Role / Device Role / Timing Role: Supplies low-noise, low-ripple VDD to LCD controller ICs; supports rapid enable/disable via hardware EN pin for display blanking. Use Value: 35 mVPP ripple ensures no visible flicker or ghosting; 65 μA quiescent current extends battery runtime in intermittent-use instruments. |
| Handheld Modems | Battery Backup Supplies |
Use Scenario: Powering RS-232 level shifters and UART interface circuitry in 3G/4G cellular modems operating from single Li-ion cells. IC Role / Device Role / Timing Role: Delivers clean 2.7 V rail independent of battery voltage sag during transmit bursts; enables EN-controlled power gating during idle periods. Use Value: 90% efficiency at 10 mA preserves battery capacity; thermal shutdown prevents overheating during sustained data transmission. |
Use Scenario: Providing hold-up voltage for real-time clock (RTC) and SRAM backup in embedded controllers during main power loss. IC Role / Device Role / Timing Role: Acts as low-quiescent-current voltage translator from primary 3.0–3.6 V battery to 2.7 V RTC supply; remains active in shutdown mode with <1 μA draw. Use Value: 0.01 μA shutdown current enables >1-year backup from coin cell; wide input range accepts degraded battery voltages down to 1.8 V. |
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 |
|---|---|---|---|
| TPS60403DBVR | 2.5 V fixed output, 60 mA max, 1.8–5.5 V input, same SOT-23-6 package | Higher output current but 0.2 V lower nominal output; tighter 2.5 V ±1.5% tolerance | Select when 2.5 V rail is acceptable and higher load current (up to 60 mA) is required. |
| MAX680ESA+ | ±5 V dual output, 20 mA per rail, 4.5–6.5 V input, SO-8 package | Dual-rail output incompatible with single 2.7 V requirement; larger footprint and higher minimum input | Use only if dual-polarity supplies are needed; not a functional substitute for REG710NA-2.7/3K's single 2.7 V output. |
Compared with TPS60403DBVR and MAX680ESA+, the REG710NA-2.7/3K provides precise 2.7 V regulation optimized for smart card and LCD bias, with superior efficiency below 3 V input and smaller solution size-making it the preferred choice where exact 2.7 V compliance and minimal board area are critical.
Availability
REG710NA-2.7/3K is available at Aetrix Electronics and suitable for smart card readers, LCD display bias, handheld modems, battery backup supplies, and SIM card interfaces requiring stable component supply with consistent parametric performance and long-term manufacturability.
Supply support for REG710NA-2.7/3K 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 specializing in analog and embedded processing technologies, with leadership in power management ICs for portable, industrial, and automotive applications.
The REG710 family was designed specifically for low-power, inductorless DC-DC conversion in space-constrained battery-powered devices-emphasizing wide input range, automatic mode switching, and minimal external component count.
FAQ
What is the input voltage range supported by the REG710NA-2.7/3K?
The REG710NA-2.7/3K supports an input voltage range of 1.8 V to 5.5 V. This allows direct operation from single-cell Li-ion (2.7–4.2 V), two-cell alkaline (2.0–3.0 V), or NiMH (2.0–2.8 V) batteries. Startup is guaranteed down to 1.8 V, and the device automatically switches between step-up and step-down modes depending on VIN relative to the 2.7 V output.
Does the REG710NA-2.7/3K require an inductor in its application circuit?
No, the REG710NA-2.7/3K does not require an inductor. It uses a switched-capacitor (charge pump) architecture with three external ceramic capacitors: 2.2 μF input (CIN), 2.2 μF output (COUT), and 0.22 μF flying capacitor (CPUMP). This eliminates magnetic components, reduces EMI, and minimizes PCB area compared to inductive DC-DC converters.
What is the maximum continuous output current of the REG710NA-2.7/3K?
The REG710NA-2.7/3K delivers up to 30 mA continuous output current under recommended operating conditions (TA = –40°C to 85°C, VIN ≥ 2.0 V). At higher loads, output voltage may drop outside regulation; short-circuit current is limited to approximately 100 mA for protection.
How does the Enable pin function on the REG710NA-2.7/3K?
The Enable pin on the REG710NA-2.7/3K is an active-high digital control input. Pulling it high (≥1.3 V) enables regulation; pulling it low (<0.4 V) places the device in shutdown mode, reducing quiescent current to 0.01 μA typical. The pin must not be left floating and requires explicit termination to avoid erratic behavior.
What package type is used for the REG710NA-2.7/3K?
The REG710NA-2.7/3K is packaged in a 6-pin SOT-23 (DDC) case measuring 2.90 mm × 1.60 mm with 0.95 mm pitch. It features an exposed thermal pad (non-functional in this variant) and complies with RoHS and lead-free assembly standards. The marking "GAAI" identifies the device on the top surface.
REG710NA-2.7/3K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 2.7V
- 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-2.7/3K FAQ
1.How can I place an order for REG710NA-2.7/3K through Aetrix?
Please submit a Request for Quotation (RFQ) for REG710NA-2.7/3K 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-2.7/3K reliable?
The price and inventory of REG710NA-2.7/3K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG710NA-2.7/3K is usually 5 days.
3.What payment methods are accepted for REG710NA-2.7/3K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG710NA-2.7/3K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG710NA-2.7/3K?
REG710NA-2.7/3K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG710NA-2.7/3K 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-2.7/3K?
For technical support, including REG710NA-2.7/3K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG710NA-2.7/3K requirements.
6.How does Aetrix verify that REG710NA-2.7/3K is sourced from the original manufacturer or authorized distributors?
All REG710NA-2.7/3K 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-2.7/3K meets industry standards.
7.What is the process for return or replacement of REG710NA-2.7/3K?
All REG710NA-2.7/3K units undergo pre-shipment inspection (PSI). If there is an issue with REG710NA-2.7/3K, 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-2.7/3K part is unused and in its original packaging.
Return procedure for REG710NA-2.7/3K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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