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Texas Instruments REG711EA-3/2K5
- Part No.:
- REG711EA-3/2K5
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
REG711EA-3/2K5.pdf
- Description:
- IC REG CHARG PUMP 3V 50MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,425
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Product details
Overview
REG711EA-3/2K5 from Texas Instruments is a 50mA switched-capacitor DC/DC converter delivering a regulated 3.0V output from 1.8V–5.5V input, featuring automatic step-up/step-down operation, 1MHz internal oscillator, no inductor requirement, and thermal/current protection-ideal for SIM card supplies and portable communication devices.
For engineers reviewing the REG711EA-3/2K5 datasheet, REG711EA-3/2K5 pinout, REG711EA-3/2K5 application, or REG711EA-3/2K5 equivalent, key selection criteria include input voltage range compatibility (1.8V–5.5V), 3.0V ±5% output accuracy at 50mA, MSOP-8 package footprint, shutdown current <2µA, and absence of magnetic components in BOM.
Technical Context
The REG711EA-3/2K5 implements dual-mode charge-pump regulation: it operates in buck mode when VIN > 3.7V and boost mode when VIN < 3.7V, automatically switching between configurations without external control. Its 1MHz oscillator enables use of small 0.22µF pump and 2.2µF input/output ceramic capacitors.
Internal protection includes thermal shutdown at 160°C with 140°C recovery, cycle-skipping current limiting up to 80mA short-circuit output, and logic-level ENABLE control with <100nA leakage. Quiescent current is 60µA at no load and <2µA in shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0V ±5% (2.85V–3.15V) at 50mA load; stable across input range 2.2V–5.5V |
| Input Voltage Range | 1.8V–5.5V; guaranteed startup down to 2.2V for 3.0V output version |
| Max Output Current | 50mA continuous; 80mA short-circuit limited-supports SIM card and low-power logic rails |
| Switching Frequency | 1MHz fixed oscillator-enables compact 0.22µF CPUMP and 2.2µF CIN/COUT ceramic caps |
| Output Ripple | 40mVp-p max at 50mA with ESR <0.1Ω capacitors-suitable for noise-sensitive analog/RF sections |
| Quiescent Current | 60µA typical at no load; <2µA in shutdown-extends battery life in standby modes |
| Operating Temp | –40°C to +85°C ambient-qualified for industrial portable equipment environments |
Pinout & Package
REG711EA-3/2K5 is housed in an 8-pin VSSOP (MSOP-8) package (DGK drawing), 3.0mm × 3.0mm × 1.0mm profile, RoHS-compliant with NiPdAu lead finish and MSL Level-2 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NC | No Connect | Unbonded pad; must be left floating or grounded per layout guidelines |
| 2 ENABLE | Logic Control Input | Active-high enable; 1.3V min high threshold, <100nA leakage-compatible with 1.8V/3.3V GPIO |
| 3 VIN | Power Input | Accepts 1.8V–5.5V; supplies internal circuitry and charge pump-requires local 2.2µF ceramic decoupling |
| 4 GND | Analog Ground | Reference for control circuitry; separate from PGND to minimize noise coupling |
| 5 VOUT | Regulated Output | Stable 3.0V supply; requires 2.2µF ceramic output capacitor close to pin |
| 6 CPUMP+ | Charge Pump Positive Terminal | Connects to positive plate of 0.22µF pump capacitor-critical for charge transfer efficiency |
| 7 CPUMP− | Charge Pump Negative Terminal | Connects to negative plate of 0.22µF pump capacitor-forms flying capacitor path |
| 8 PGND | Power Ground | High-current return path for pump and output stages; star-grounded at pin 5 per layout guidance |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless Architecture | Eliminates magnetic components-reduces EMI, PCB area, and BOM cost vs. inductive DC/DC converters |
| Auto Buck-Boost Mode Switching | Seamlessly transitions between step-down and step-up based on VIN/VOUT ratio-no external mode control needed |
| Low-Ripple Output | 40mVp-p max ripple at full 50mA load ensures clean supply for RF front-ends and precision ADCs |
| Ultra-Low Shutdown Current | <2µA shutdown quiescent current extends shelf life and battery runtime in always-on portable systems |
| Integrated Protection | Thermal shutdown (160°C) and current limit (80mA) prevent damage during fault conditions without external circuitry |
Applications
| Smart Card Readers | SIM Card Supplies |
|---|---|
|
Use Scenario: Powering ISO 7816-compliant contact smart cards in handheld readers and point-of-sale terminals. IC Role / Device Role / Timing Role: Provides tightly regulated 3.0V rail meeting ICC transient demands and voltage tolerance specs of smart card ICs. Use Value: Eliminates need for discrete LDO + inductor solution; maintains regulation during rapid card insertion/removal transients. |
Use Scenario: Supplying 3.0V power to GSM/UMTS/LTE SIM cards in mobile handsets and IoT modules. IC Role / Device Role / Timing Role: Delivers stable 3.0V under varying battery voltage (2.8V–4.2V Li-ion) and burst current loads during RF transmission. Use Value: Enables single-supply design from main battery; 1MHz switching avoids interference with cellular band frequencies. |
| Portable Communication Devices | LCD Display Bias Supplies |
|
Use Scenario: Generating auxiliary 3.0V rails in Bluetooth headsets, wireless earbuds, and portable radios. IC Role / Device Role / Timing Role: Powers baseband processors and RF transceivers requiring low-noise, low-quiescent-current supply. Use Value: 60µA no-load current and <2µA shutdown extend talk time; small MSOP-8 footprint saves space in ultra-thin enclosures. |
Use Scenario: Providing bias voltage for segment LCDs in handheld meters, medical monitors, and industrial HMI panels. IC Role / Device Role / Timing Role: Supplies clean 3.0V for LCD common electrode or contrast control circuits sensitive to ripple. Use Value: 40mVp-p ripple meets display contrast stability requirements; no inductor prevents magnetic coupling into LCD traces. |
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 |
|---|---|---|---|
| MAX680ESA+ | Fixed 5V output only; 100mA output; requires external timing capacitor; ±1.5% output accuracy | Not suitable for 3.0V SIM card rails; better for higher-current 5V logic supplies | Select MAX680ESA+ only if 5V output and >50mA load are required; not drop-in for REG711EA-3/2K5 |
| TPS60403DBVR | 3.3V output; 60mA output; 1.2MHz switching; integrated soft-start; ±3% output accuracy over temp | Higher output voltage and current-requires level-shifting for 3.0V-only interfaces | Choose TPS60403DBVR when 3.3V rail is acceptable and soft-start is critical; verify voltage compatibility with load ICs |
Compared with MAX680ESA+ and TPS60403DBVR, REG711EA-3/2K5 uniquely delivers precise 3.0V ±5% regulation across full 1.8V–5.5V input range with lowest shutdown current (<2µA) and smallest external component count-making it optimal for space-constrained, battery-sensitive 3.0V applications.
Availability
REG711EA-3/2K5 is available at Aetrix Electronics and suitable for smart card readers, SIM card supplies, and portable communication devices requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for REG711EA-3/2K5 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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in precision power conversion and signal chain solutions.
REG711EA-3/2K5 belongs to TI's switched-capacitor DC/DC converter product line, engineered specifically for low-noise, inductorless voltage regulation in battery-powered portable electronics where board space and EMI are critical constraints.
FAQ
What is the output voltage tolerance of REG711EA-3/2K5 under full 50mA load?
The REG711EA-3/2K5 delivers 3.0V output with ±5% tolerance (2.85V–3.15V) at 50mA load and input voltage between 2.2V and 5.5V, as specified in the SBVS027A datasheet. This accuracy is maintained across the full operating temperature range of –40°C to +85°C, making REG711EA-3/2K5 suitable for applications requiring stable 3.0V supply such as SIM card interfaces.
Does REG711EA-3/2K5 require external inductors?
No, REG711EA-3/2K5 is an inductorless switched-capacitor DC/DC converter. It uses two external ceramic capacitors-a 0.22µF pump capacitor (CPUMP) and 2.2µF input/output capacitors-to achieve step-up or step-down regulation. This eliminates magnetic components, reduces EMI, and saves PCB area compared to inductive solutions-core to the REG711EA-3/2K5 architecture.
What is the shutdown current specification for REG711EA-3/2K5?
REG711EA-3/2K5 draws less than 2µA typical shutdown current when ENABLE is pulled low and VIN is between 1.8V and 5.5V. This ultra-low quiescent state significantly extends battery life in standby or sleep modes of portable devices, a key design advantage confirmed in the SBVS027A datasheet's "Supply Current" table.
Which package type and footprint does REG711EA-3/2K5 use?
REG711EA-3/2K5 is packaged in an 8-pin VSSOP (also labeled MSOP-8) with DGK package drawing, measuring 3.0mm × 3.0mm × 1.0mm. It features a 0.65mm pin pitch and RoHS-compliant NiPdAu lead finish. This compact, surface-mount footprint is optimized for high-density portable PCB layouts and matches standard MSOP-8 reflow profiles.
How does REG711EA-3/2K5 handle input voltages both above and below 3.0V?
REG711EA-3/2K5 automatically switches between buck (step-down) and boost (step-up) modes depending on input voltage: it operates in buck mode when VIN > 3.7V and boost mode when VIN < 3.7V. This seamless transition-governed by internal control logic-ensures continuous 3.0V regulation without external intervention or mode pins, a defining feature of the REG711EA-3/2K5.
REG711EA-3/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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:
- 50mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
REG711EA-3/2K5 FAQ
1.How can I place an order for REG711EA-3/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for REG711EA-3/2K5 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 REG711EA-3/2K5 reliable?
The price and inventory of REG711EA-3/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG711EA-3/2K5 is usually 5 days.
3.What payment methods are accepted for REG711EA-3/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG711EA-3/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG711EA-3/2K5?
REG711EA-3/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG711EA-3/2K5 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 REG711EA-3/2K5?
For technical support, including REG711EA-3/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG711EA-3/2K5 requirements.
6.How does Aetrix verify that REG711EA-3/2K5 is sourced from the original manufacturer or authorized distributors?
All REG711EA-3/2K5 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 REG711EA-3/2K5 meets industry standards.
7.What is the process for return or replacement of REG711EA-3/2K5?
All REG711EA-3/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with REG711EA-3/2K5, 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 REG711EA-3/2K5 part is unused and in its original packaging.
Return procedure for REG711EA-3/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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