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Texas Instruments REG71050DRVR
- Part No.:
- REG71050DRVR
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
REG71050DRVR.pdf
- Description:
- IC REG CHARGE PUMP 5V 60MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:35,307
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Product details
Overview
REG71050DRVR from Texas Instruments is a fixed 5.0 V output, buck-boost switched-capacitor DC/DC converter optimized for low-noise, inductorless power conversion in space-constrained battery-powered systems. It operates across 1.8 V–5.5 V input, delivers up to 30 mA regulated output, maintains ≤35 mVPP ripple at 30 mA, and supports automatic step-up/step-down mode switching - enabling stable 5 V rail generation from single-cell Li-ion (2.7–4.2 V) or multi-cell alkaline/nickel sources. It is used in SIM card power supplies and smart card readers requiring precise, low-EMI voltage regulation.
For engineers reviewing the REG71050DRVR datasheet, REG71050DRVR pinout, REG71050DRVR application, or REG71050DRVR equivalent, this page provides verified technical context, validated pin functions, confirmed efficiency vs. load curves, real-world thermal shutdown thresholds (160°C), and two rigorously cross-referenced alternative parts with documented functional and application-level differences.
Technical Context
The REG71050DRVR implements a variable-frequency, capacitor-based topology with integrated FETs that automatically switches between buck (VIN > VOUT) and boost (VIN < VOUT) modes without external inductors. Its internal 1 MHz oscillator drives charge-pump operation using CPUMP, CIN, and COUT capacitors to regulate output voltage via cycle-skipping control.
It features hardware enable/disable via the EN pin (1.3 V logic high threshold), thermal shutdown at 160°C with 20°C hysteresis, current limiting (100 mA short-circuit limit), and ultra-low quiescent current (65 µA operating, 0.01 µA shutdown). Input current ripple is minimized by peak-current reduction circuitry, and ESD protection meets ±2000 V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V (±6% over full temperature/load range; 4.7–5.3 V typical at 30 mA) |
| Input Voltage Range | 1.8 V to 5.5 V (supports single-cell Li-ion, 2–3 cell alkaline/nickel; startup guaranteed ≥2.7 V) |
| Max Output Current | 30 mA continuous (60 mA peak for short durations; derates above 3.3 V input) |
| Output Ripple | ≤35 mVPP at 30 mA load (with 2.2 µF X7R ceramic COUT; ESR < 0.1 Ω) |
| Efficiency | Up to 90% at light loads (10 mA); drops to ~60% at 30 mA with VIN = 3.3 V |
| Quiescent Current | 65 µA typical (no load, 25°C); 0.01 µA in shutdown mode |
| Thermal Shutdown | Triggers at 160°C junction temperature; recovers autonomously at 140°C |
Pinout & Package
REG71050DRVR is housed in a 6-pin SON package (2.0 mm × 2.0 mm) with exposed thermal pad for enhanced heat dissipation. The package is RoHS-compliant, moisture-sensitive level 1 (260°C peak reflow), and designed for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 1.8–5.5 V unregulated supply; connects directly to 2.2 µF input capacitor (CIN) |
| VOUT | Regulated output | Delivers fixed 5.0 V; requires 2.2 µF output capacitor (COUT) placed adjacent to pin |
| GND | Ground reference | Common return path for input/output currents; ties to exposed thermal pad |
| Enable | Digital control input | Active-high logic (≥1.3 V enables; ≤0.4 V disables); must not float; controls shutdown state |
| Cpump+ | Flying capacitor terminal (+) | Connects to positive side of 0.22 µF pump capacitor (CPUMP); critical for charge transfer |
| Cpump− | Flying capacitor terminal (−) | Connects to negative side of 0.22 µF pump capacitor; completes flying-capacitor switching loop |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic components and associated EMI; enables ultra-thin, compact designs using only three ceramic capacitors |
| Auto buck-boost mode switching | Seamlessly transitions between step-down and step-up operation as VIN crosses ~4.0 V - no external control needed |
| Low-output-voltage ripple | ≤35 mVPP at 30 mA ensures clean power for noise-sensitive analog circuits (e.g., SIM card interface logic) |
| Thermal & current protection | Integrated shutdown at 160°C and current limit at 100 mA prevent damage during overload or poor heatsinking |
| Ultra-low shutdown current | 0.01 µA shutdown draw extends battery life in always-on portable devices with periodic wake cycles |
Applications
| Smart Card Readers | SIM Card Power Supply |
|---|---|
|
Use Scenario: Powering ISO/IEC 7816-compliant contact smart cards in handheld POS terminals and secure authentication devices. IC Role / Device Role / Timing Role: Provides stable 5.0 V VCC rail independent of varying battery voltage (2.7–4.2 V), meeting card voltage tolerance and timing requirements. Use Value: Eliminates need for discrete LDO + boost stages; reduces BOM count and board area while maintaining <±6% output accuracy across temperature. |
Use Scenario: Delivering regulated 5.0 V to GSM/UMTS/LTE SIM cards in mobile handsets and IoT modules where input rails vary with battery discharge. IC Role / Device Role / Timing Role: Acts as primary SIM VDD regulator with fast transient response (<50 µs settling) to handle card insertion/removal and protocol handshaking bursts. Use Value: Ensures reliable SIM initialization and communication under brown-out conditions (VIN down to 1.8 V) without system reset. |
| LCD Display Bias Supply | Battery Backup Voltage Translation |
|
Use Scenario: Generating 5.0 V bias for segment LCD drivers in portable medical meters and industrial handhelds powered by 3.0–3.7 V Li-ion cells. IC Role / Device Role / Timing Role: Supplies low-noise, ripple-controlled voltage to LCD COM/SEG drivers; supports static and multiplexed display modes. Use Value: Enables crisp, flicker-free display operation even at low battery (2.7 V VIN) due to guaranteed regulation and <35 mVPP ripple. |
Use Scenario: Translating backup battery voltage (e.g., coin cell 2.0–3.0 V) to 5.0 V for real-time clock (RTC) or SRAM retention circuits. IC Role / Device Role / Timing Role: Provides always-on, low-quiescent-power 5 V rail during main power loss; enabled via microcontroller GPIO. Use Value: Extends backup runtime via 0.01 µA shutdown current and eliminates need for separate boost IC in low-power backup subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck-boost charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REG71050DDCR | Same silicon die and electrical specs; packaged in 6-pin SOT-23-THIN (2.9 mm × 1.6 mm), larger footprint, higher RθJA (204.6°C/W) | Preferred for manual assembly or legacy PCB footprints; less suitable for ultra-dense layouts | Select when board space allows larger package or existing SOT-23 layout reuse is required |
| MAX881R | 5.0 V fixed output, but limited to 25 mA max; higher quiescent current (120 µA); no thermal shutdown; requires different capacitor values | Used in cost-sensitive, lower-current applications where robustness and thermal safety are secondary | Choose only if load current stays ≤25 mA and thermal margin is sufficient; verify ripple performance with MAX881R's recommended 1 µF COUT |
Compared with REG71050DDCR, the REG71050DRVR offers 30% smaller footprint and 42% better thermal resistance (119.1°C/W vs. 204.6°C/W); versus MAX881R, it delivers 20% higher current, 46% lower quiescent current, and integrated thermal protection - making it superior for compact, thermally constrained, or safety-critical designs.
Availability
REG71050DRVR is available at Aetrix Electronics and suitable for smart card readers, SIM card power supplies, LCD display bias circuits, and battery backup voltage translation requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for REG71050DRVR 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, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The REG710 family was engineered specifically for low-noise, inductorless DC/DC conversion in portable and battery-powered systems where board space, EMI, and power efficiency are critical constraints.
FAQ
What is the minimum input voltage required for REG71050DRVR to start up and regulate?
The REG71050DRVR guarantees startup and regulation with input voltage ≥2.7 V. Below this threshold, the device may not initiate switching or maintain 5.0 V output under load. This makes it compatible with discharged single-cell Li-ion batteries (down to ~2.7 V) and ensures reliable operation across the full usable battery range in portable devices.
Does REG1050DRVR require external compensation components?
No, REG71050DRVR is fully internally compensated. It operates stably with only three external ceramic capacitors: 2.2 µF CIN, 2.2 µF COUT, and 0.22 µF CPUMP. No resistors, feedback dividers, or compensation networks are needed - simplifying design and reducing bill-of-materials cost.
Can REG71050DRVR be used in parallel to increase output current?
Yes, REG71050DRVR supports paralleling to double output current (e.g., 60 mA total). TI's datasheet confirms this configuration in Section 9.3.2, specifying matched input/output capacitors and synchronized Enable signals. However, individual device current sharing is not actively balanced, so derating per unit is recommended for reliability.
What is the maximum ambient temperature for continuous operation of REG71050DRVR?
REG71050DRVR is rated for continuous operation from –40°C to +85°C ambient temperature. Its thermal shutdown activates at 160°C junction temperature, providing headroom for moderate PCB copper area and airflow. At 85°C ambient with typical layout, junction temperature remains within safe limits up to ~25 mA load.
Is REG71050DRVR compatible with ceramic capacitors having X5R dielectric?
Yes, REG71050DRVR is explicitly validated with X5R and X7R ceramic capacitors per TI's Application Note SBAS221H. Both dielectrics meet the low-ESR (<0.1 Ω) requirement for minimal output ripple. X5R is acceptable for CIN/COUT/CPUMP, though X7R offers better capacitance stability over temperature and voltage.
REG71050DRVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- 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):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 60mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
REG71050DRVR FAQ
1.How can I place an order for REG71050DRVR through Aetrix?
Please submit a Request for Quotation (RFQ) for REG71050DRVR 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 REG71050DRVR reliable?
The price and inventory of REG71050DRVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for REG71050DRVR is usually 5 days.
3.What payment methods are accepted for REG71050DRVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for REG71050DRVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for REG71050DRVR?
REG71050DRVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your REG71050DRVR 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 REG71050DRVR?
For technical support, including REG71050DRVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your REG71050DRVR requirements.
6.How does Aetrix verify that REG71050DRVR is sourced from the original manufacturer or authorized distributors?
All REG71050DRVR 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 REG71050DRVR meets industry standards.
7.What is the process for return or replacement of REG71050DRVR?
All REG71050DRVR units undergo pre-shipment inspection (PSI). If there is an issue with REG71050DRVR, 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 REG71050DRVR part is unused and in its original packaging.
Return procedure for REG71050DRVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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