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Analog Devices Inc./Maxim Integrated MAX711ESE+TG068
- Part No.:
- MAX711ESE+TG068
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX711ESE+TG068.pdf
- Description:
- IC REG BUCK BST ADJ 1.1A 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,609
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Product details
Overview
MAX711ESE+TG068 from Maxim Integrated is an adjustable step-up/down DC-DC converter IC integrating a PFM-controlled boost stage and a low-dropout linear regulator. It operates from +1.8V to +11V input, delivers 2.7V–5.5V adjustable output up to 500mA at VIN = 3.6V, and features 0.2µA shutdown current, 7µA standby quiescent current, and 16-pin narrow SOIC package. It is designed for battery-powered portable devices requiring seamless voltage regulation across varying battery states.
For engineers reviewing the MAX711ESE+TG068 datasheet, MAX711ESE+TG068 pinout, MAX711ESE+TG068 application, or MAX711ESE+TG068 equivalent, key selection criteria include its dual-mode (high-efficiency/low-noise) operation via N/E control, programmable current limit (0.8A/1.5A), integrated LBO comparator for battery monitoring, and compatibility with single-cell Li+, multi-cell alkaline, and AC adapter hybrid power systems.
Technical Context
The MAX711ESE+TG068 uses pulse-frequency modulation (PFM) with fixed 1µs off-time and variable on-time to drive its internal N-channel MOSFET switch, enabling high efficiency at light loads. Its linear regulator employs a P-channel MOSFET pass element and shares a precision 1.25V reference with the boost stage.
Operating mode is selected via the N/E pin: low for high-efficiency (minimal forward drop in boost mode), high for low-noise (maintains ~0.5V headroom for ripple rejection). The ILIM pin selects peak switch current limits (0.8A at PS, 1.5A at GND), directly impacting inductor sizing and transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +1.8V to +11V - supports single-cell Li+ (2.7–4.2V), 2–4-cell alkaline (2.4–6.0V), and AC adapter backup without external level shifting. |
| Output Voltage Range | +2.7V to +5.5V (adjustable via FB pin) - enables precise matching to system logic rails including 3.3V, 5V, or custom intermediate voltages. |
| Max Output Current | 500mA at VIN = 3.6V - sufficient for microcontrollers, sensors, and RF modules in portable equipment. |
| Shutdown Current | 0.2µA - minimizes battery drain during deep sleep, extending shelf life of battery-powered devices. |
| Standby Quiescent Current | 7µA - maintains regulated output while disabling boost stage, ideal for wake-on-event architectures. |
| Reference Voltage | 1.25V (typ) at REF pin - provides stable, low-drift feedback reference for accurate output voltage setting and LBI comparator thresholding. |
| Thermal Shutdown | +150°C with +20°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
MAX711ESE+TG068 is housed in a 16-pin narrow SOIC (SO) package with exposed pad not specified; pin 1 is LX (drain of internal N-MOSFET), pin 2 is PGND, pin 4 is SHDN, pin 5 is STBY, pin 7 is N/E (noise/efficiency mode select), pin 9 is OUT, pin 12 is PS (power supply input), pin 13 is REF (1.25V reference), pin 14 is GND (analog ground), pin 15 is PGND (power ground), pin 16 is LX (second drain connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX (1,16) | Drain of internal N-channel MOSFET | Connects to inductor and Schottky diode anode; carries high-frequency switching current; requires short, low-inductance layout. |
| PGND (2,15) | Power ground return path | Separate low-impedance return for switch current; must be tied to GND plane with multiple vias to minimize noise coupling. |
| SHDN (4) | Global shutdown control | Logic-low disables entire IC and actively pulls OUT to GND; enables zero-current battery storage mode. |
| STBY (5) | Step-up converter disable control | Grounding disables boost stage only; linear regulator remains active at 7µA IQ, supporting fast wake-up from low-power state. |
| N/E (7) | Noise/Efficiency mode select | Low = high-efficiency (LDO acts as PFET switch); high = low-noise (LDO maintains ~0.5V headroom for ripple rejection). |
| OUT (9) | Regulated output voltage | Delivers final stepped-up or stepped-down voltage; bypassed with 4.7µF capacitor for LDO stability and 100µF for ripple filtering. |
| PS (12) | Main power input | Supplies internal circuitry; derived from LX output in boost mode; accepts full +1.8V to +11V input range. |
| REF (13) | Precision 1.25V reference output | Used for FB feedback divider and LBI- comparator input; requires 0.1µF ceramic bypass to GND for stability. |
| GND (14) | Analog ground reference | Low-impedance analog reference node; must be soldered directly to ground plane to prevent reference noise injection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated step-up/down architecture | Eliminates need for separate boost and LDO ICs, reducing BOM count, board area, and design complexity in battery-varying applications. |
| Two selectable peak current limits | 0.8A (ILIM = PS) or 1.5A (ILIM = GND) allows optimization of inductor size, cost, and transient response for specific load profiles. |
| Dual operating modes (N/E control) | Enables trade-off between >85% boost efficiency (N/E = GND) and superior ripple rejection (N/E = PS), adapting to dynamic system noise requirements. |
| Built-in low-battery comparator (LBI+/LBI-/LBO) | Provides autonomous battery monitoring with user-set threshold (e.g., 3.0V cutoff) and 50mV hysteresis, avoiding external supervisor IC. |
| 16-pin narrow SOIC package | Industry-standard footprint compatible with automated assembly; thermal performance validated for continuous 500mA output at TA ≤ +85°C. |
Applications
| Single-Cell Li+ Portable Devices | Digital Cameras |
|---|---|
Use Scenario: Powering image sensor, processor, and LCD from a 3.7V nominal Li+ cell whose voltage sags to 2.8V under load and rises to 4.2V when charged. IC Role / Device Role / Timing Role: Step-up/down converter maintaining stable 3.3V rail regardless of battery state; regulates during both discharge and charge cycles. Use Value: Enables uninterrupted operation across full battery voltage range without manual rail switching or external supervision. |
Use Scenario: Supplying flash LED driver, CMOS sensor bias, and memory interface from 2–4 AA alkaline cells (2.4–6.0V). IC Role / Device Role / Timing Role: Provides clean, regulated 5V for flash charging and 3.3V for digital core; handles rapid load transients during burst capture. Use Value: Delivers 500mA peak current with <20mV output ripple in low-noise mode, preventing image sensor noise artifacts. |
| Hand-Held Medical Monitors | Industrial Data Loggers with AC/DC Backup |
Use Scenario: Operating ECG front-end, microcontroller, and Bluetooth radio from primary CR2032 coin cell (2.0–3.0V) and optional USB backup. IC Role / Device Role / Timing Role: Boosts coin cell to 3.3V for MCU and steps down USB 5V to same rail; manages seamless source transition via N/E and STBY controls. Use Value: Achieves 85% efficiency at 2mA load, extending coin cell life to >12 months; 7µA standby enables long-term data retention. |
Use Scenario: Powering microcontroller, real-time clock, and nonvolatile memory in remote sensor nodes powered by 3.6V Li-SOCl₂ primary battery and 5V wall adapter. IC Role / Device Role / Timing Role: Regulates battery to 3.3V during field operation; accepts adapter input without reverse current flow; LBO signals battery depletion. Use Value: Eliminates need for external OR-ing diodes or power-path controllers; 0.2µA shutdown preserves battery for >10-year deployments. |
Availability
MAX711ESE+TG068 is available at Aetrix Electronics and suitable for battery-powered portable devices, medical instrumentation, industrial data loggers, and consumer imaging equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX711ESE+TG068 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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX710/MAX711 product line was engineered specifically for portable battery-powered systems where input voltage varies above and below the required output rail, delivering seamless step-up/step-down conversion without external FETs or complex control logic.
FAQ
What is the maximum output current capability of the MAX711ESE+TG068 at different input voltages?
The MAX711ESE+TG068 delivers up to 500mA at VIN = 3.6V and VOUT = 5V, 250mA at VIN = 1.8V and VOUT = 5V, and maintains full 500mA capability across its adjustable 2.7V–5.5V output range when input exceeds 3.0V. Peak current is limited internally to 0.8A or 1.5A depending on ILIM pin configuration, ensuring safe operation with standard 22µH inductors.
How does the N/E pin affect efficiency and output noise in the MAX711ESE+TG068?
The N/E pin configures the MAX711ESE+TG068's linear regulator behavior: when pulled low, it operates as a low-RDS(on) PFET switch during boost mode, maximizing efficiency (>85% typical) but offering minimal ripple rejection; when pulled high, it maintains ~0.5V headroom for optimal noise suppression, reducing output ripple by >20dB at 100kHz but lowering boost efficiency by ~10%. This allows system-level trade-offs based on real-time noise sensitivity.
Can the MAX711ESE+TG068 operate from a single 1.8V alkaline cell?
Yes, the MAX711ESE+TG068 starts up and regulates from as low as 1.8V input, delivering 2.7V–5.5V output. At VIN = 1.8V and VOUT = 5V, it provides 250mA with typical 85% efficiency. Its PFM control and low-quiescent-current design (7µA in standby, 0.2µA in shutdown) make it uniquely suited for ultra-low-voltage primary battery applications where other converters fail to start.
What is the function of the LBI+/LBI-/LBO pins on the MAX711ESE+TG068?
The LBI+ and LBI- pins form a precision comparator input pair referenced to the internal 1.25V REF voltage; connecting a resistor divider from PS to GND at LBI+ sets a customizable low-battery detection threshold (e.g., 3.0V). When the threshold is crossed, LBO asserts low with 50mV hysteresis. This eliminates the need for external battery monitors in space-constrained portable designs using the MAX711ESE+TG068.
Is the MAX711ESE+TG068 pin-compatible with the MAX710ESE+TG068?
Yes, the MAX711ESE+TG068 and MAX710ESE+TG068 share identical 16-pin narrow SOIC packaging, pinout, and core functionality. The key difference is output configuration: MAX710 offers fixed 3.3V/5V outputs via the 3/5 pin, while MAX711 provides adjustable output via the FB pin. All control, monitoring, and power pins (SHDN, STBY, N/E, ILIM, LBI+/LBI-/LBO, REF, PS, OUT, LX, PGND, GND) are functionally identical and electrically interchangeable in layout.
MAX711ESE+TG068 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.8V
- Voltage - Input (Max):
- 11V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.1A (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX711ESE+TG068 FAQ
1.How can I place an order for MAX711ESE+TG068 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX711ESE+TG068 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 MAX711ESE+TG068 reliable?
The price and inventory of MAX711ESE+TG068 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX711ESE+TG068 is usually 5 days.
3.What payment methods are accepted for MAX711ESE+TG068?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX711ESE+TG068 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX711ESE+TG068?
MAX711ESE+TG068 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX711ESE+TG068 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 MAX711ESE+TG068?
For technical support, including MAX711ESE+TG068 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX711ESE+TG068 requirements.
6.How does Aetrix verify that MAX711ESE+TG068 is sourced from the original manufacturer or authorized distributors?
All MAX711ESE+TG068 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 MAX711ESE+TG068 meets industry standards.
7.What is the process for return or replacement of MAX711ESE+TG068?
All MAX711ESE+TG068 units undergo pre-shipment inspection (PSI). If there is an issue with MAX711ESE+TG068, 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 MAX711ESE+TG068 part is unused and in its original packaging.
Return procedure for MAX711ESE+TG068:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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