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Analog Devices Inc./Maxim Integrated MAX662AMSA/PR
- Part No.:
- MAX662AMSA/PR
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX662AMSA/PR.pdf
- Description:
- FLASH MEMORY PROGRAMMING SUPPLY
- Quantity:
- Payment:
- Shipping:
Inventory:8,604
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Product details
Overview
MAX662AMSA/PR from Maxim Integrated is a regulated +12V, 30mA charge-pump DC-DC converter designed for flash memory programming supplies. It delivers ±5% output regulation from 4.75V–5.5V input, requires no inductor, uses only four external capacitors, and fits in <0.1 in² board area. Its logic-controlled shutdown reduces supply current to 0.5µA.
For engineers reviewing the MAX662AMSA/PR datasheet, MAX662AMSA/PR pinout, MAX662AMSA/PR application, or MAX662AMSA/PR equivalent, key selection criteria include guaranteed 30mA output at ±5% regulation, 185µA quiescent current, 8-pin narrow SO package compatibility, and flash EEPROM VPP supply timing behavior during microprocessor-controlled shutdown transitions.
Technical Context
The MAX662AMSA/PR implements a pulse-skipping feedback control scheme that monitors VOUT and activates internal charge-pump switches only when output voltage droops. It uses two external flying capacitors (C1, C2) and two bulk capacitors (C4, C5) to generate +12V via voltage tripling-no magnetic components required.
Its oscillator operates at 500kHz nominal frequency, with switching duty increasing under higher load or lower input voltage. In shutdown mode (SHDN = high), internal 1kΩ switch connects VCC to VOUT, and charge pumps halt completely-reducing total current to 0.5µA while maintaining VOUT ≈ VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +12V ±5% - ensures reliable byte-wide flash memory VPP programming across temperature and load |
| Output Current | Guaranteed 30mA continuous - sufficient for standard flash EEPROM write/erase cycles |
| Input Voltage Range | 4.75V to 5.5V - compatible with standard 5V ±5% logic rails without external LDO pre-regulation |
| Quiescent Current | 185µA - enables low-power system standby without disabling main 5V rail |
| Shutdown Current | 0.5µA - allows microprocessor-controlled power gating with negligible leakage impact |
| Oscillator Frequency | 500kHz nominal - determines capacitor sizing and ripple frequency for EMI filtering |
| Power Efficiency | 76% typical at 5V/30mA - minimizes thermal rise in compact surface-mount layouts |
Pinout & Package
MAX662AMSA/PR is supplied in an 8-pin narrow SO (Small Outline) package, 0.150" wide, with standard JEDEC MS-012AC footprint and 1.27mm pitch. Pin 1 marked with dot; pin numbering counterclockwise from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1− (Pin 1) | Negative terminal of first flying capacitor | Return path for charge transfer during pump phase; must be routed with minimal trace inductance |
| C1+ (Pin 2) | Positive terminal of first flying capacitor | Connects to VCC during charging phase; forms first stage of voltage tripler |
| C2− (Pin 3) | Negative terminal of second flying capacitor | Shared node between C1 and C2 during series connection; critical for voltage stacking integrity |
| C2+ (Pin 4) | Positive terminal of second flying capacitor | Drives VOUT during transfer phase; directly sets output voltage amplitude |
| VCC (Pin 5) | Main supply input | Accepts 4.75V–5.5V; powers internal oscillator, logic, and charge-pump drivers |
| VOUT (Pin 6) | +12V regulated output | Supplies flash VPP pin; remains at VCC during shutdown via internal 1kΩ switch |
| GND (Pin 7) | Analog/digital ground reference | Common return for all capacitors and internal circuitry; must be low-impedance plane |
| SHDN (Pin 8) | Active-high shutdown control | TTL/CMOS-compatible; internally pulled up to VCC; connect to GND for normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless charge-pump topology | Eliminates EMI-sensitive magnetics and simplifies layout-only four ceramic/tantalum capacitors required |
| Logic-controlled shutdown | Reduces system idle power by >99.7% versus active mode; enables µP-driven VPP enable/disable sequencing |
| Guaranteed output over full temp range | Delivers 30mA at +12V ±5% from −40°C to +85°C-validates reliability for industrial flash programming |
| Pin-compatible upgrade to MAX662 | Direct drop-in replacement with improved quiescent/shutdown currents and no need for optional C3 capacitor |
| Surface-mount only design | Entire solution-including all capacitors-fits in <0.1 in²; supports automated assembly and high-density PCBs |
Applications
| Flash Memory Programming Supply | Compact Op-Amp Bias Supply |
|---|---|
Use Scenario: Microcontroller-based embedded system performing in-system flash reprogramming during firmware updates. IC Role / Device Role / Timing Role: Provides precisely timed +12V VPP pulse synchronized to µP's SHDN signal-ramps to 12V in ~400µs, decays to VCC in ~13ms during shutdown. Use Value: Enables reliable byte/sector erase and program cycles without external DC-DC controller or inductor layout constraints. | Use Scenario: Portable instrumentation requiring dual-rail op-amps with isolated +12V bias in space-constrained enclosures. IC Role / Device Role / Timing Role: Generates stable +12V from main 5V rail; shutdown capability allows dynamic power cycling of analog front-end stages. Use Value: Reduces board area by >70% vs. inductor-based solutions while maintaining low-noise performance via ceramic capacitor filtering. |
| MOSFET Gate Drive in Low-Voltage Systems | Dual +12V/+20V Supply Generation |
Use Scenario: Battery-powered motor driver using logic-level N-channel MOSFETs requiring boosted gate voltage above battery rail. IC Role / Device Role / Timing Role: Supplies gate drive voltage to high-side switches; shutdown disables gate bias during sleep mode to prevent leakage. Use Value: Delivers 30mA peak current needed for fast gate charging while consuming only 0.5µA in standby-extending battery life. | Use Scenario: Industrial sensor module needing both +12V for analog conditioning and +20V for piezoelectric transducer bias. IC Role / Device Role / Timing Role: Configured as voltage doubler (Figure 4) to produce +20V output alongside primary +12V rail from single 5V source. Use Value: Achieves dual-output capability without additional ICs-+20V delivers up to 16mA at room temperature with same component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge-pump boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX662ACSA | Same die, commercial-temp (0°C to +70°C) grade; identical electrical specs and pinout | Limited to non-industrial environments; not qualified for extended temperature operation | Select MAX662AMSA/PR for designs requiring −40°C to +85°C operation; MAX662ACSA suffices for office/indoor consumer use |
| MAX734ESA | Switch-mode PWM DC-DC; 120mA output; requires inductor; higher efficiency (85%) at full load | Supports higher-current flash programming and sustained loads beyond 30mA | Choose MAX734ESA when >30mA continuous output or >80% efficiency is mandatory; accept added inductor size and EMI filtering complexity |
Compared with MAX662ACSA, MAX662AMSA/PR provides extended temperature qualification without sacrificing performance; compared with MAX734ESA, it trades higher output current for inductorless simplicity, smaller footprint, and lower EMI-making it optimal for space- and noise-sensitive flash programming.
Availability
MAX662AMSA/PR is available at Aetrix Electronics and suitable for flash memory programming supplies, compact op-amp biasing, and low-voltage MOSFET gate drive applications requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +85°C operation.
Supply support for MAX662AMSA/PR 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 computing markets.
The MAX662A product line was engineered specifically to replace inductor-based +12V programming supplies in flash memory systems-delivering regulation, low quiescent current, and true shutdown capability in minimal board area.
FAQ
What is the operating temperature range specified for the MAX662AMSA/PR?
The MAX662AMSA/PR is rated for −40°C to +85°C operation, matching the extended temperature grade of the MAX662AE series. This specification is validated across all electrical parameters including output voltage regulation, 30mA load capability, and shutdown current-ensuring reliability in industrial and automotive-adjacent environments where the MAX662AMSA/PR is commonly deployed.
Does the MAX662AMSA/PR require the C3 capacitor used in the original MAX662 design?
No, the MAX662AMSA/PR does not require the C3 capacitor. The datasheet explicitly states that C3 is "not required" for the MAX662A and its presence has no effect on performance. This simplifies bill-of-materials and layout versus legacy MAX662 implementations-confirming MAX662AMSA/PR as a true drop-in upgrade with reduced component count.
How does the MAX662AMSA/PR behave during shutdown mode?
When SHDN is driven high, the MAX662AMSA/PR halts all charge-pump switching and connects VCC to VOUT through an internal 1kΩ resistor. As a result, VOUT decays to VCC level within approximately 13ms. During this state, total supply current drops to 0.5µA-verified across temperature-enabling precise microprocessor-controlled power gating for flash programming sequences without external FETs or level shifters.
Can multiple MAX662AMSA/PR devices be paralleled to increase output current?
Yes, two MAX662AMSA/PR units can be paralleled by connecting VCC, VOUT, and GND pins together. However, the absolute maximum continuous output current remains 50mA regardless of parallel count-per Absolute Maximum Ratings. Layout must ensure matched trace lengths and shared or duplicated bypass/filter capacitors; uneven loading may cause one device to supply most of the current, so derating is advised for robust designs.
What capacitor types and values are recommended for stable operation of the MAX662AMSA/PR?
For stable operation, use 0.22µF ceramic or tantalum capacitors for C1 and C2 (charge-pump flying caps); 4.7µF tantalum (e.g., Sprague 595D475X9016A7) for C4 (input) and C5 (output). At extended temperatures, 1.0µF tantalum is preferred for C1/C2. Ceramic alternatives allow reducing C4/C5 to 2µF/1µF respectively-but aluminum electrolytics require ≥10µF to maintain regulation and ripple performance.
MAX662AMSA/PR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Converter, Flash Memory
- Voltage - Input:
- 4.5V ~ 5.5V
- Number of Outputs:
- 1
- Voltage - Output:
- 12V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX662AMSA/PR FAQ
1.How can I place an order for MAX662AMSA/PR through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX662AMSA/PR 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 MAX662AMSA/PR reliable?
The price and inventory of MAX662AMSA/PR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX662AMSA/PR is usually 5 days.
3.What payment methods are accepted for MAX662AMSA/PR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX662AMSA/PR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX662AMSA/PR?
MAX662AMSA/PR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX662AMSA/PR 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 MAX662AMSA/PR?
For technical support, including MAX662AMSA/PR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX662AMSA/PR requirements.
6.How does Aetrix verify that MAX662AMSA/PR is sourced from the original manufacturer or authorized distributors?
All MAX662AMSA/PR 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 MAX662AMSA/PR meets industry standards.
7.What is the process for return or replacement of MAX662AMSA/PR?
All MAX662AMSA/PR units undergo pre-shipment inspection (PSI). If there is an issue with MAX662AMSA/PR, 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 MAX662AMSA/PR part is unused and in its original packaging.
Return procedure for MAX662AMSA/PR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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