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Analog Devices Inc./Maxim Integrated MAX607EUA+
- Part No.:
- MAX607EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX607EUA+.pdf
- Description:
- IC REG FLASH MEM 1OUT 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,030
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Product details
Overview
The MAX607EUA+ from Maxim Integrated is a low-profile, current-mode, step-up DC-DC converter optimized for PCMCIA and flash memory card power supplies. It operates from 3V to 5.5V input, delivers up to 90mA at 12V or 180mA at 5V, features ±4% output regulation, 500kHz switching frequency, and 1µA shutdown quiescent current. It targets space-constrained Type 2/3 card designs requiring compact, height-sensitive boost conversion.
For engineers reviewing the MAX607EUA+ datasheet, MAX607EUA+ pinout, MAX607EUA+ application, or MAX607EUA+ equivalent, key selection criteria include its 500kHz fixed-frequency PFM control scheme, µMAX-8 package (1.11mm max height), FB-pin programmable 5V/12V/adjustable output, soft-start capability via external capacitor, and guaranteed operation across –40°C to +85°C.
Technical Context
The MAX607EUA+ implements a proprietary current-limited pulse-frequency modulation (PFM) control scheme that dynamically adjusts on-time (tON = K/VIN, K = 6 µs·V typical) and off-time (tOFF = 0.5·K/(VOUT + VDIODE − VIN)) to maintain regulation across wide input/output combinations while optimizing efficiency and ripple. Unlike PWM converters, it generates variable-frequency noise with amplitude bounded by switch current limit × output capacitor ESR.
Output voltage is selected via the FB pin: tied to GND for 12V, to IN for 5V, or to a resistive divider for adjustable output from VIN to 12.5V (VREF = 2.00V ±2%). The device integrates a 1Ω n-channel power MOSFET, undervoltage lockout (2.8V threshold), and logic-controlled shutdown with 0.01µA typical quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports single-cell Li-ion, 3.3V/5V system rails, and PCMCIA host supply standards. |
| Output Voltage Options | Fixed 5V (±4%), fixed 12V (±4%), or adjustable 3.0V–12.5V - configured via FB pin connection without external components for standard outputs. |
| Max Output Current | 90mA @ 12V / 180mA @ 5V - verified under full temperature range with recommended inductor and capacitors. |
| Switching Frequency | 500kHz typical - enables use of small 10µH inductors and ceramic output capacitors fitting <0.16in² board area. |
| Shutdown Quiescent Current | 0.01µA typical - ensures negligible battery drain during card sleep or standby modes. |
| FB Regulation Setpoint | 2.00V ±2% - defines precision reference for adjustable output configurations using external resistor dividers. |
| Package Dimensions | 8-pin µMAX (3.0mm × 3.0mm × 1.11mm) - occupies half the PCB area of standard SO-8, compliant with Type 2/3 PCMCIA height limits. |
Pinout & Package
MAX607EUA+ uses the 8-pin µMAX package (3.0mm × 3.0mm, 1.11mm max height), designed for ultra-low-profile applications including PCMCIA Type 2/3 cards and handheld devices where board height is constrained to ≤2.5mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PGND | Power Ground | Return path for high-current switch node; must be connected directly to ground plane to minimize voltage bounce during switching. |
| 2 - FB | Feedback Input | Sets output voltage: tie to GND for 12V, to IN for 5V, or to resistor divider for adjustable output (VOUT = 2V × (R1/R2 + 1)). |
| 3 - SHDN | Shutdown Control | Active-low logic input; connect to GND to disable output and reduce supply current to 0.01µA; connect to IN for normal operation. |
| 4 - IN | Input Supply | Main power input (3.0V–5.5V); also serves as reference for 5V output mode when FB is tied to IN. |
| 5 - GND | Analog Ground | Reference for internal error amplifier and timing circuits; should be star-connected to PGND at single point near device. |
| 6 - PGND | Power Ground | Duplicate PGND pin (pin 1) - both pins must be soldered to ground plane to handle peak switch currents up to 1.1A. |
| 7 - OUT | Regulated Output | Boosted output node; connects directly to load and output filter capacitor; requires low-ESR ceramic capacitor (e.g., 2×0.68µF). |
| 8 - LX | Switch Node | Drain of internal n-channel MOSFET; connects to inductor and Schottky diode anode; layout critical for EMI and efficiency. |
Key Features
| Feature | Design Value |
|---|---|
| Lowest-height circuit solution | Entire design fits ≤2.5mm height - meets Type 2/3 PCMCIA mechanical envelope requirements without compromising output current. |
| User-controlled soft-start | External capacitor on SS pin (pin 6) ramps current limit at startup, limiting inrush into large output capacitance or weak batteries. |
| Logic-compatible shutdown | 1µA max SHDN input current allows direct interface with microcontroller GPIOs without level-shifting or pull-up resistors. |
| Precision feedback reference | 2.00V ±2% internal reference enables 1% output accuracy in adjustable mode using standard 1% resistors and 100kΩ divider networks. |
| Integrated power switch | On-chip 1Ω n-channel MOSFET eliminates external switch, reducing BOM count and layout complexity while maintaining 1.1A peak current capability. |
Applications
| PCMCIA Card Power | Flash Memory Programming |
|---|---|
|
Use Scenario: Powering Type 2 or Type 3 PCMCIA cards from 3.3V or 5V host bus, where board height must remain ≤2.5mm and output must deliver stable 12V for card logic and interface circuitry. IC Role / Device Role / Timing Role: Primary step-up DC-DC converter generating regulated 12V rail from host-supplied 3.3V/5V; manages transient load steps during card enumeration and data transfer. Use Value: Enables compliance with PCMCIA mechanical standards while delivering 90mA at 12V with ±4% accuracy and <100mVp-p ripple using only discrete passives. |
Use Scenario: Providing clean, fast-rising 5V supply to flash memory ICs during programming cycles, where rapid turn-on and minimal inrush are critical to avoid host bus brownout. IC Role / Device Role / Timing Role: Dedicated boost converter with user-controlled soft-start (via SS pin capacitor) ensuring controlled voltage ramp and eliminating current surges into large memory array capacitance. Use Value: Delivers 180mA at 5V with <50mVp-p ripple and startup delay configurable from 1µs to 1.8ms - accelerating flash access time while protecting host power integrity. |
| Digital Camera Backlight | Hand-Held Equipment Supply |
|
Use Scenario: Driving white LED strings requiring >10V from a single 3.7V Li-ion cell in compact digital cameras, where PCB real estate and thermal profile are tightly constrained. IC Role / Device Role / Timing Role: Constant-voltage boost controller supplying regulated 12V to LED driver ICs; operates continuously at light loads with 500µA no-load quiescent current. Use Value: Achieves >75% efficiency at 20mA LED load using 10µH inductor and ceramic caps - enabling >3-hour runtime per charge in space-limited form factors. |
Use Scenario: Generating auxiliary 5V rail for microcontroller peripherals in battery-powered handheld test equipment, where long shelf life and reliable cold-temperature startup are required. IC Role / Device Role / Timing Role: Main system power converter supporting –40°C to +85°C operation; integrates UVLO (2.8V) and 0.01µA shutdown to extend battery life during storage. Use Value: Guarantees functional operation down to –40°C with no derating, and draws <10nA average current in shutdown - enabling 10-year shelf life on primary lithium cells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX606EUA+ | 1MHz switching frequency, 1.35mm max height, 180mA @ 5V but only 120mA @ 12V; higher no-load current (250µA vs. 500µA for MAX607). | Better suited for Type 1 (thinnest) PCMCIA cards and ultra-compact 5V-only applications where board area is more constrained than height. | Select MAX606EUA+ when 1MHz operation enables smaller inductors/caps and height <1.35mm is mandatory; avoid if 12V load exceeds 120mA or height budget allows 2.5mm. |
| TPS61040DRVR | Fixed 5V output only, 500kHz switching, 0.6µA shutdown current, but requires external MOSFET and lacks FB-programmable 12V mode. | Targeted at cost-sensitive, fixed-output consumer electronics rather than multi-voltage PCMCIA or industrial memory systems. | Choose TPS61040DRVR only for simple 5V boost needs with lowest possible shutdown IQ; not suitable as drop-in replacement due to missing 12V mode and external switch requirement. |
Compared with MAX606EUA+, the MAX607EUA+ trades higher 12V output current (90mA vs. 120mA) and lower no-load supply current (500µA vs. 250µA) for relaxed height constraints (2.5mm vs. 1.35mm), while differing from TPS61040DRVR by integrating the power switch and supporting dual fixed/adjustable outputs - making it uniquely fit for multi-rail, height-tolerant PCMCIA and flash programming designs.
Availability
MAX607EUA+ is available at Aetrix Electronics and suitable for PCMCIA card power, flash memory programming supplies, digital camera backlight drivers, and hand-held equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX607EUA+ 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, communications, and consumer applications.
The MAX606/MAX607 product line was engineered specifically for ultra-compact, low-height DC-DC conversion in removable memory and peripheral cards - addressing mechanical, thermal, and electrical constraints unique to PCMCIA and flash memory systems.
FAQ
What output voltages does the MAX607EUA+ support, and how are they selected?
The MAX607EUA+ supports three output configurations: fixed 5V (FB tied to IN), fixed 12V (FB tied to GND), or adjustable 3.0V–12.5V (FB connected to resistive divider between OUT and GND). Its internal 2.00V ±2% reference enables precise adjustment using standard 1% resistors. This flexibility allows a single MAX607EUA+ design to serve multiple voltage requirements without changing the IC.
How does the MAX607EUA+ achieve low height in PCMCIA card designs?
The MAX607EUA+ achieves ≤2.5mm total assembly height through its 8-pin µMAX package (1.11mm max height), compatibility with low-profile 10µH inductors and ceramic capacitors, and elimination of external MOSFETs. Its 500kHz switching frequency permits smaller magnetics than lower-frequency alternatives, enabling full circuit implementation within the strict mechanical envelope of Type 2/3 PCMCIA cards.
What is the purpose of the SS (Soft-Start) pin on the MAX607EUA+, and how is it used?
The SS pin on the MAX607EUA+ controls startup inrush current by gradually increasing the internal current limit during power-up or wake-from-shutdown. A capacitor connected between SS and GND sets the ramp time - values from 100pF to 10nF yield delays from ~1µs to ~1.8ms. Omitting the capacitor enables fastest possible startup, useful in flash programming where minimal access delay is critical.
Does the MAX607EUA+ require external compensation components?
No, the MAX607EUA+ is internally compensated and requires no external compensation network. Its current-mode PFM control architecture and integrated feedback reference eliminate the need for loop compensation components, simplifying design and reducing BOM count. Stability is guaranteed across all supported input/output combinations and load conditions specified in the datasheet.
What is the maximum continuous output current the MAX607EUA+ can deliver at 12V, and under what conditions?
The MAX607EUA+ delivers up to 90mA continuously at 12V output when operating from a 4.5V–5.5V input, using the recommended 10µH inductor (Sumida CLS62B-100), MBR0520L Schottky diode, and 2×1µF ceramic output capacitors, across the full –40°C to +85°C temperature range. This rating is validated by DC parametric testing and confirmed in typical operating characteristics graphs.
MAX607EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Converter, Flash Memory PCMCIA Cards
- Voltage - Input:
- 3V ~ 5.5V
- Number of Outputs:
- 1
- Voltage - Output:
- 5V, 12V, 3V ~ 12.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX607EUA+ FAQ
1.How can I place an order for MAX607EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX607EUA+ 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 MAX607EUA+ reliable?
The price and inventory of MAX607EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX607EUA+ is usually 5 days.
3.What payment methods are accepted for MAX607EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX607EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX607EUA+?
MAX607EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX607EUA+ 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 MAX607EUA+?
For technical support, including MAX607EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX607EUA+ requirements.
6.How does Aetrix verify that MAX607EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX607EUA+ 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 MAX607EUA+ meets industry standards.
7.What is the process for return or replacement of MAX607EUA+?
All MAX607EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX607EUA+, 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 MAX607EUA+ part is unused and in its original packaging.
Return procedure for MAX607EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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