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Texas Instruments REG711EA332K5G4
- Part No.:
- REG711EA332K5G4
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
REG711EA332K5G4.pdf
- Description:
- IC REG CHG PUMP 3.3V 50MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,602
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Product details
Overview
REG711EA332K5G4 from Texas Instruments is a 3.3V, 50mA switched-capacitor DC/DC converter in MSOP-8 package, supporting automatic step-up/step-down operation across 1.8V–5.5V input range. It delivers low-ripple regulated output without inductors, features 1MHz internal oscillator, shutdown mode, and thermal/current protection-ideal for SIM card power in portable communication devices.
For engineers reviewing the REG711EA332K5G4 datasheet, REG711EA332K5G4 pinout, REG711EA332K5G4 application, or REG711EA332K5G4 equivalent, key selection criteria include input voltage flexibility (1.8V–5.5V), guaranteed 3.3V ±3% output at 50mA, MSOP-8 footprint compatibility, quiescent current of 60µA (no load), and absence of magnetic components in BOM.
Technical Context
The REG711EA332K5G4 implements automatic mode switching between buck and boost configurations based on input-to-output voltage relationship: it operates in step-down mode when VIN > 3.4V and switches to step-up mode below that threshold. Internal 1MHz oscillator enables use of small ceramic capacitors (CIN/COUT = 2.2µF, CPUMP = 0.22µF) with ESR < 0.1Ω.
It integrates thermal shutdown (trip at 160°C, recovery at 140°C), current limiting (80mA short-circuit capability), and logic-level enable control (1.3V high threshold, 0.4V low threshold). Ground pin current is 1mA at full load, dropping to <1µA in shutdown-critical for battery-powered systems requiring ultra-low standby power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3V ±3% (2.85V–3.46V) at 50mA load; stable regulation across input range 1.8V–5.5V |
| Max Output Current | 50mA continuous; 80mA short-circuit current limit protects device and load |
| Input Voltage Range | 1.8V–5.5V; supports single-cell Li-ion, dual/triple alkaline/Ni-based batteries |
| Switching Frequency | 1MHz fixed oscillator; enables compact 1206-size ceramic capacitors, no inductor required |
| Quiescent Current | 60µA at no load; <2µA in shutdown mode-extends battery life in always-on peripherals |
| Output Ripple | 40mVp-p at 50mA load with recommended 2.2µF COUT and low-ESR ceramic dielectric |
| Enable Logic Threshold | Logic-high ≥1.3V (VIN-referenced); logic-low ≤0.4V-compatible with 1.8V/3.3V microcontroller GPIO |
Pinout & Package
REG711EA332K5G4 is housed in an 8-pin MSOP (VSSOP-DGK) package with 0.65mm pitch, 3mm × 3mm body, and height <1.1mm-suitable for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 NC | No Connect | Unbonded pad; must be left floating or tied to GND per layout guidelines |
| 2 ENABLE | Control Input | Active-high digital enable; <0.4V disables regulator, reducing supply current to <2µA |
| 3 VIN | Power Input | Main unregulated input (1.8V–5.5V); connects to input capacitor (CIN = 2.2µF) |
| 4 GND | Analog Ground | Reference for internal circuitry; separate from PGND in star-ground layout |
| 5 PGND | Power Ground | High-current return path for charge pump; connects to CIN and COUT ground pads |
| 6 VOUT | Regulated Output | Stable 3.3V output; requires 2.2µF ceramic capacitor (X7R/X5R, ESR < 0.1Ω) |
| 7 CPUMP+ | Charge Pump Positive | Connects to positive terminal of 0.22µF pump capacitor (CPUMP) |
| 8 CPUMP− | Charge Pump Negative | Connects to negative terminal of 0.22µF pump capacitor; forms flying capacitor node |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless Architecture | Eliminates magnetic components and EMI concerns-reduces BOM count and PCB area by removing inductors |
| Auto Buck-Boost Mode Switching | Seamlessly transitions between step-up and step-down without external control or configuration pins |
| Low Quiescent Current | 60µA at zero load enables multi-year battery life in intermittently active devices like smart cards |
| Thermal + Current Protection | Integrated shutdown at 160°C and current limit at 80mA prevent damage during overloads or shorts |
| Small Ceramic Capacitor Support | 1MHz switching allows use of 1206-size 2.2µF/0.22µF X7R ceramics-lower cost and height vs tantalum |
Applications
| Smart Card Readers | SIM Card Power Supply |
|---|---|
|
Use Scenario: Providing regulated 3.3V power to ISO 7816-compliant smart cards in handheld readers. IC Role / Device Role / Timing Role: Primary voltage regulator converting variable battery voltage (1.8V–5.5V) to stable 3.3V for card interface logic. Use Value: Enables direct battery operation without intermediate LDOs; 50mA output supports dual-card slots and contactless RF front-ends. |
Use Scenario: Powering SIM cards in cellular handsets where input rail varies with battery state (2.8V–4.2V). IC Role / Device Role / Timing Role: Standby-capable DC/DC converter delivering 3.3V at <100µA quiescent current during sleep modes. Use Value: Eliminates need for discrete charge pumps or inefficient linear regulators-improves standby time by 3× vs LDO solutions. |
| Portable Communication Devices | LCD Display Bias Supply |
|
Use Scenario: Generating 3.3V for baseband processors and RF transceivers in Bluetooth headsets and walkie-talkies. IC Role / Device Role / Timing Role: Compact, inductor-free power stage replacing bulkier inductive converters in tight form factors. Use Value: Reduces solution height to <1.1mm and eliminates EMI filtering-critical for FCC/CE compliance in Class 1 radios. |
Use Scenario: Supplying 3.3V bias for segment LCD drivers in handheld meters and industrial HMI panels. IC Role / Device Role / Timing Role: Low-noise regulated source powering LCD COM/SEG drivers with minimal ripple-induced flicker. Use Value: 40mVp-p output ripple ensures stable contrast across temperature; MSOP-8 eases routing near display flex connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX881RESA+ | 3.3V, 50mA, 1.5V–5.5V input; 1.2MHz oscillator; higher quiescent current (120µA no load) | Requires larger 0.47µF pump cap; less efficient below 2.5V input | Preferred when higher switching frequency is needed for tighter ripple control |
| TPS60403DBVR | 3.3V, 60mA, 1.6V–5.5V input; 1MHz oscillator; integrated soft-start; 85µA quiescent current | Includes undervoltage lockout (UVLO) and soft-start-better for cold-start battery applications | Chosen when system-level reliability requires UVLO and inrush current limiting |
Compared with MAX881RESA+ and TPS60403DBVR, REG711EA332K5G4 offers the lowest quiescent current (60µA) and smallest solution size (no soft-start circuitry), making it optimal for ultra-low-power, space-constrained smart card and SIM applications where startup timing is not critical.
Availability
REG711EA332K5G4 is available at Aetrix Electronics and suitable for smart card readers, SIM card supplies, and portable communication devices requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for REG711EA332K5G4 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90 years of innovation in power management ICs.
The REG711 family was designed specifically for low-power, inductorless DC/DC conversion in battery-operated portable electronics-targeting applications where board space, EMI, and standby current are critical constraints.
FAQ
What is the guaranteed output voltage tolerance of REG711EA332K5G4 across its full operating range?
The REG711EA332K5G4 guarantees 3.3V output within ±3% (2.85V to 3.46V) under all specified conditions: input voltage 1.8V–5.5V, load current up to 50mA, and temperature range –40°C to +85°C. This tolerance is maintained regardless of whether the device operates in buck or boost mode, as confirmed in the SBVS027A datasheet's output voltage table.
Can REG711EA332K5G4 operate with input voltages below 2.0V, and what is the minimum startup voltage?
Yes, REG711EA332K5G4 supports input voltages down to 1.8V for guaranteed startup and regulation. The datasheet specifies "Guaranteed Startup" for all models except the 5.0V version, with a minimum input of 1.8V. At 1.8V input and 50mA load, it maintains 3.3V output regulation-enabling use with deeply discharged alkaline or NiMH cells.
What capacitor types and values are mandatory for stable operation of REG711EA332K5G4?
Stable operation of REG711EA332K5G4 requires three surface-mount ceramic capacitors: CIN = 2.2µF, COUT = 2.2µF, and CPUMP = 0.22µF-all rated X7R or X5R dielectric with ESR < 0.1Ω. Leaded or tantalum capacitors are explicitly discouraged due to higher ESR and inductance, which increase output ripple beyond the specified 40mVp-p.
How does the enable pin of REG711EA332K5G4 behave during shutdown, and what is its leakage current?
When the ENABLE pin is pulled low (<0.4V), REG711EA332K5G4 enters shutdown mode, disconnecting VOUT from VIN and reducing total supply current to ≤2µA (typical 0.01µA). Input leakage on the ENABLE pin is ≤100nA in both high and low states-ensuring compatibility with weak-drive microcontroller GPIOs without external pull resistors.
Is REG711EA332K5G4 pin-compatible with other variants in the REG711 family, such as REG711EA-2.5 or REG711EA-5.0?
Yes, all REG711EA-x variants-including REG711EA332K5G4-are fully pin-compatible within the MSOP-8 (DGK) package. They share identical pinout, thermal characteristics (θJA = 150°C/W), and electrical interface behavior. Only the output voltage and device marking differ; no PCB redesign is needed when substituting between 2.5V, 3.0V, 3.3V, 2.7V, or 5.0V versions.
REG711EA332K5G4 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:
- 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):
- 3.3V
- 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
REG711EA332K5G4 FAQ
1.How can I place an order for REG711EA332K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for REG711EA332K5G4 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 REG711EA332K5G4 reliable?
The price and inventory of REG711EA332K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG711EA332K5G4 is usually 5 days.
3.What payment methods are accepted for REG711EA332K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG711EA332K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG711EA332K5G4?
REG711EA332K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG711EA332K5G4 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 REG711EA332K5G4?
For technical support, including REG711EA332K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG711EA332K5G4 requirements.
6.How does Aetrix verify that REG711EA332K5G4 is sourced from the original manufacturer or authorized distributors?
All REG711EA332K5G4 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 REG711EA332K5G4 meets industry standards.
7.What is the process for return or replacement of REG711EA332K5G4?
All REG711EA332K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with REG711EA332K5G4, 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 REG711EA332K5G4 part is unused and in its original packaging.
Return procedure for REG711EA332K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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