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Analog Devices Inc./Maxim Integrated MAX683EUA+
- Part No.:
- MAX683EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX683EUA+.pdf
- Description:
- IC REG CHARG PUMP 5V 100MA 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,496
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Product details
Overview
MAX683EUA+ from Maxim Integrated is a 5V fixed-output charge-pump voltage regulator IC designed for compact, low-noise auxiliary power in battery-powered systems. It delivers up to 100mA output current from a 2.7V–5.5V input, operates in skip or constant-frequency mode (50kHz–2MHz), achieves ±4% output regulation, and requires only three external capacitors and one resistor-no inductor needed. It targets flash memory supplies and PCMCIA card power rails.
For engineers reviewing the MAX683EUA+ datasheet, MAX683EUA+ pinout, MAX683EUA+ application, or MAX683EUA+ equivalent, key selection criteria include its 100mA output capability, 8-pin µMAX package (1.1mm height), shutdown current of 0.1µA, and dual-mode operation enabling tradeoffs between light-load efficiency and output ripple performance.
Technical Context
The MAX683EUA+ integrates an error amplifier, 1.23V bandgap reference, internal feedback network, oscillator, high-current MOSFET switches, and dual-function SHDN logic. Its regulation architecture supports two distinct modes: skip mode (low-quiescent-current, variable-frequency) and constant-frequency mode (low-ripple, fixed switching frequency).
In skip mode (SKIP = low), the device disables switching when output exceeds 5V and resumes only when voltage drops-reducing no-load current to 0.18mA. In constant-frequency mode (SKIP = high), oscillator frequency is set by SHDN pin current (1–50µA), enabling precise ripple control and supporting input voltages up to 5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.05V (±4% tolerance); ensures stable logic-level supply for 5V peripherals without external feedback. |
| Max Output Current | 100mA continuous; sufficient for flash memory VCC, SIM card interfaces, and low-power microcontroller peripherals. |
| Input Voltage Range | 2.7V–5.5V (SKIP = high); supports single-cell Li-ion, 3.3V rails, and legacy 5V systems with direct compatibility. |
| Quiescent Current | 0.18mA typical (no load, SKIP = low); enables multi-year battery life in always-on backup or sensor nodes. |
| Shutdown Current | 0.1µA max; reduces system standby power to negligible levels during deep sleep or storage. |
| Switching Frequency | 50kHz–2MHz (externally adjustable via SHDN current); allows optimization of capacitor size vs. EMI filtering requirements. |
| Package | 8-pin µMAX (3mm × 3mm × 1.1mm); enables ultra-thin PCB designs in handhelds, smart cards, and wearables. |
Pinout & Package
MAX683EUA+ uses an 8-pin µMAX package (3mm × 3mm, 1.1mm height), optimized for space-constrained applications including PCMCIA cards and miniature embedded modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SKIP | Mode select input | Logic-low enables skip mode (low IQ); logic-high forces constant-frequency mode (required for VIN > 3.6V). |
| 2 - SHDN | Dual-function control pin | Drives shutdown when pulled low; sets oscillator frequency via sourced current (1–50µA) when pulled high through REXT. |
| 3 - IN | Main power input | Accepts 2.7V–5.5V; bypassed to PGND with ≥1µF ceramic capacitor to suppress input ripple and noise. |
| 4 - GND | Analog ground reference | Must be short-traced to PGND to minimize ground bounce and ensure stable regulation accuracy. |
| 5 - PGND | Power ground return | Carries high-frequency switch currents; isolated from signal ground to prevent coupling into sensitive analog sections. |
| 6 - CXN | Negative terminal of charge-pump capacitor | Connects to negative side of 0.22–0.47µF transfer capacitor; critical path for charge recycling efficiency. |
| 7 - CXP | Positive terminal of charge-pump capacitor | Connects to positive side of transfer capacitor; forms flying-capacitor node essential for voltage doubling topology. |
| 8 - OUT | Regulated 5V output | Delivers up to 100mA; requires ≥1µF low-ESR ceramic output capacitor to maintain <80mV ripple in constant-frequency mode. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates magnetic components, reducing EMI, board area, and BOM cost-ideal for RF-sensitive or ultra-thin devices. |
| 1µF capacitor per 100mA output | Enables use of tiny 0.47µF CX and 1µF CIN/COUT in constant-frequency mode, cutting total external capacitance by >50% vs. traditional boost converters. |
| Dual operating modes | Skip mode achieves 0.18mA no-load IQ for extended battery life; constant-frequency mode delivers <80mV ripple at 1MHz for noise-sensitive analog circuits. |
| Ultra-low shutdown current | 0.1µA shutdown draw preserves battery capacity over years-critical for backup power, real-time clocks, and security modules. |
| Input undervoltage lockout | Deactivates below 2.25V with 100mV hysteresis, preventing brownout operation and ensuring clean power sequencing in Li-ion discharge profiles. |
Applications
| Flash Memory Supplies | Battery-Powered Portable Devices |
|---|---|
|
Use Scenario: Providing regulated 5V VCC to NAND/NOR flash chips in handheld scanners and IoT data loggers. IC Role / Device Role / Timing Role: Charge-pump regulator delivering stable 5V from a 3.3V system rail or single-cell Li-ion battery. Use Value: Eliminates need for bulky inductors while maintaining <±4% output accuracy across temperature and load-ensuring reliable flash programming and erase cycles. |
Use Scenario: Powering SIM card interfaces and USB transceivers in GSM-enabled trackers and asset monitors. IC Role / Device Role / Timing Role: Auxiliary 5V supply generating clean, low-noise power from a 3.3V main rail or battery source. Use Value: Constant-frequency mode (1MHz) reduces output ripple to <80mV, meeting ETSI/3GPP RF immunity requirements for cellular modules. |
| PCMCIA Card Power | 3.3V-to-5V Local Conversion |
|
Use Scenario: Generating 5V for legacy PCMCIA Type II peripherals in industrial laptops and docking stations. IC Role / Device Role / Timing Role: Compact, low-profile charge-pump regulator fitting within strict 1.1mm height envelope of PCMCIA form factor. Use Value: 8-pin µMAX package (3mm × 3mm × 1.1mm) meets mechanical constraints while delivering full 100mA output for card initialization and data bursts. |
Use Scenario: Local 5V generation for USB peripherals, level-shifting buffers, or legacy sensors on 3.3V microcontroller boards. IC Role / Device Role / Timing Role: Standalone DC-DC converter replacing inefficient linear regulators or discrete charge-pump solutions. Use Value: Achieves >85% efficiency at 50mA load (VIN = 3.3V), reducing thermal stress and extending runtime compared to LDO-based 3.3V→5V conversion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar charge-pump regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX682ESA+ | Higher 250mA output current; SO-8 package (4.9mm × 6mm, 1.75mm height); same pinout but larger footprint and thermal profile. | Suitable for higher-current loads like multi-chip flash arrays or dual-SIM platforms where board space permits SO-8. | Select MAX682ESA+ only if >100mA output is required and µMAX height constraint does not apply. |
| TPS60403DBVR | TI's 5V charge pump with 60mA output, 1.8–5.5V input, fixed 500kHz frequency, and 6-pin SOT-23 package; no SKIP mode or frequency adjustment. | Targeted at cost-sensitive, low-complexity applications where fixed-frequency simplicity outweighs efficiency flexibility. | Choose TPS60403DBVR for simpler BOMs and lower unit cost when 60mA output and absence of skip mode are acceptable. |
Compared with MAX682ESA+, MAX683EUA+ trades 150mA output headroom for 40% smaller footprint and 35% lower profile-making it optimal for height-limited designs. Against TPS60403DBVR, MAX683EUA+ offers 67% higher output current, adjustable frequency, and skip mode for superior battery life, at the cost of two extra pins and slightly higher design complexity.
Availability
MAX683EUA+ is available at Aetrix Electronics and suitable for flash memory supplies, battery-powered portable devices, and PCMCIA card power requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MAX683EUA+ 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX682/MAX683/MAX684 family was engineered specifically for compact, inductorless 3.3V-to-5V local conversion-targeting space-constrained, battery-operated equipment where efficiency, height, and EMI must be tightly controlled.
FAQ
What is the maximum output current specification for the MAX683EUA+?
The MAX683EUA+ delivers up to 100mA of continuous output current under typical conditions (VIN = 3.3V, TA = +25°C). Absolute maximum continuous output current is rated at 150mA, but sustained operation above 100mA may require thermal derating depending on PCB layout and ambient temperature. The MAX683EUA+ datasheet specifies 100mA as the guaranteed maximum output in its ordering information and electrical characteristics tables.
Does the MAX683EUA+ require an inductor in its application circuit?
No, the MAX683EUA+ is a charge-pump regulator and does not require an inductor. It operates using a flying capacitor (CX) topology-only three external capacitors (CIN, CX, COUT) and one resistor (REXT for frequency setting) are needed. This eliminates magnetic components, reduces EMI, and simplifies layout, making the MAX683EUA+ ideal for space- and noise-sensitive applications.
How does the SKIP pin affect the operation of the MAX683EUA+?
The SKIP pin on the MAX683EUA+ selects between two regulation modes: when pulled low, the MAX683EUA+ enters skip mode-disabling switching during light loads to minimize quiescent current (0.18mA typical); when pulled high, it operates in constant-frequency mode (50kHz–2MHz), delivering lower output ripple (<80mV) and supporting input voltages up to 5.5V. For VIN > 3.6V, SKIP must be high to ensure regulation.
What package type is used by the MAX683EUA+ and what are its key mechanical dimensions?
The MAX683EUA+ uses an 8-pin µMAX package (also referred to as uMAX), measuring 3.0mm × 3.0mm in footprint and just 1.1mm in height. This ultra-low-profile package enables integration into height-constrained applications such as PCMCIA cards, smart cards, and wearable electronics-where standard SO-8 or MSOP packages would exceed mechanical clearance limits.
Can the MAX683EUA+ be used with input voltages below 3.0V?
Yes, the MAX683EUA+ supports an input voltage range of 2.7V to 5.5V. At 2.7V input (with SKIP = high), it maintains regulated 5V output up to ~60mA load while staying within ±4% tolerance. Operation below 2.7V is not guaranteed-the device incorporates undervoltage lockout that disables regulation below 2.25V to prevent unregulated output and ensure system reliability.
MAX683EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Up
- 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:
- 100mA
- Frequency - Switching:
- 50kHz ~ 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX683EUA+ FAQ
1.How can I place an order for MAX683EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX683EUA+ 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 MAX683EUA+ reliable?
The price and inventory of MAX683EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX683EUA+ is usually 5 days.
3.What payment methods are accepted for MAX683EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX683EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX683EUA+?
MAX683EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX683EUA+ 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 MAX683EUA+?
For technical support, including MAX683EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX683EUA+ requirements.
6.How does Aetrix verify that MAX683EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX683EUA+ 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 MAX683EUA+ meets industry standards.
7.What is the process for return or replacement of MAX683EUA+?
All MAX683EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX683EUA+, 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 MAX683EUA+ part is unused and in its original packaging.
Return procedure for MAX683EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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