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Analog Devices Inc./Maxim Integrated MAX662ACSA+
- Part No.:
- MAX662ACSA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX662ACSA+.pdf
- Description:
- IC REG CHARG PUMP 12V 30MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,615
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Product details
Overview
MAX662ACSA+ 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 operates across 0°C to +70°C in an 8-pin narrow SO package.
For engineers reviewing the MAX662ACSA+ datasheet, MAX662ACSA+ pinout, MAX662ACSA+ application, or MAX662ACSA+ equivalent, key selection criteria include guaranteed 30mA output at ±5% regulation, 0.5µA shutdown current, 185µA quiescent current, and compatibility with byte-wide flash VPP programming in compact industrial and embedded systems.
Technical Context
The MAX662ACSA+ implements a pulse-skipping feedback control scheme that monitors VOUT and activates internal charge pumps only when output voltage droops. It uses two cascaded charge-pump stages (C1/C2) to achieve voltage tripling from VCC to ~3×VCC, then regulates to precisely +12V via internal error amplifier and oscillator.
Its CMOS-compatible SHDN pin (internally pulled up to VCC) enables microprocessor-controlled enable/disable with 0.5µA shutdown supply current. During shutdown, VOUT connects to VCC through a 1kΩ internal switch, and recovery to full output takes ~400µs at VCC = 5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +12V ±5% - ensures reliable flash memory VPP programming within JEDEC-compliant tolerance |
| Output Current | Guaranteed 30mA continuous - sufficient for byte-wide flash write/erase cycles without derating |
| Input Voltage Range | 4.75V to 5.5V - matches standard 5V ±5% logic supply rails |
| Quiescent Current | 185µA - minimizes standby power in battery-backed or low-power systems |
| Shutdown Current | 0.5µA - enables deep-sleep operation during flash idle periods |
| Oscillator Frequency | 500kHz nominal - supports fast transient response and compact capacitor sizing |
| Power Efficiency | 76% typical at 5V/30mA - reduces thermal load in space-constrained PCB layouts |
Pinout & Package
MAX662ACSA+ is housed in an 8-pin narrow SO (Small Outline) package, 3.9mm × 4.9mm body, 1.27mm pitch, RoHS-compliant. Pin 1 marked by beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1− | Negative terminal of first charge-pump capacitor | Return node for C1 during charging phase; must be routed with minimal trace inductance |
| C1+ | Positive terminal of first charge-pump capacitor | Node connected to VCC during charge phase; forms first pump stage with C1− |
| C2− | Negative terminal of second charge-pump capacitor | Intermediate node between pump stages; critical for voltage tripling topology |
| C2+ | Positive terminal of second charge-pump capacitor | Output node of second pump stage; feeds regulated output via internal switching network |
| GND | Ground reference | Common return for all internal circuitry and external capacitors; requires low-impedance plane |
| VOUT | +12V regulated output | Supplies flash VPP pin; connects to VCC via 1kΩ switch in shutdown mode |
| VCC | Main power input | 5V supply input; powers internal oscillator, logic, and charge-pump drivers |
| SHDN | Active-high shutdown control | CMOS/TTL-compatible enable; pull to GND for normal operation; internally pulled up to VCC |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor design | Eliminates EMI-sensitive magnetics and simplifies layout-only four surface-mount capacitors required |
| Logic-controlled shutdown | 0.5µA shutdown current enables microprocessor-gated VPP activation, reducing system-level power by >99% during idle |
| Regulated +12V output | ±5% accuracy over temperature and load ensures compliance with flash memory programming voltage specifications |
| Compact footprint | Fits in <0.1 in² board area-ideal for space-constrained modules such as SIM cards, secure elements, and IoT edge nodes |
| Pin-compatible upgrade | Direct replacement for MAX662 with lower quiescent current and guaranteed output across full temperature range |
Applications
| Flash Memory Programming Supply | Compact Op-Amp Bias Supply |
|---|---|
Use Scenario: Generating VPP for byte-wide flash EEPROM write/erase cycles in embedded controllers. IC Role / Device Role / Timing Role: Dedicated +12V regulated power source synchronized to microprocessor SHDN control signal. Use Value: Guarantees 30mA at ±5% for reliable programming without inductor-based noise coupling into sensitive analog sections. | Use Scenario: Providing clean +12V bias for rail-to-rail op-amps in portable instrumentation front-ends. IC Role / Device Role / Timing Role: Low-noise, capacitor-only DC-DC booster replacing linear regulators to improve efficiency. Use Value: 76% efficiency at 30mA reduces heat dissipation versus LDO solutions, enabling smaller thermal pads and thinner PCBs. |
| Low-Voltage MOSFET Gate Driver | Dual +12V/+20V Supply Generator |
Use Scenario: Driving high-side N-channel MOSFETs in 5V-powered motor control or power-switching circuits. IC Role / Device Role / Timing Role: Generates gate-boost voltage above VCC to ensure full enhancement of logic-level MOSFETs. Use Value: 185µA quiescent current preserves battery life in always-on gate-drive applications; fast 400µs wake-up supports burst-mode switching. | Use Scenario: Simultaneously powering flash VPP (+12V) and high-voltage analog circuitry (+20V) from single 5V rail. IC Role / Device Role / Timing Role: Core charge-pump IC reconfigured with external diodes to deliver dual regulated outputs. Use Value: Enables dual-rail functionality without adding second IC-Figure 4 achieves +20V at up to 16mA while maintaining +12V at 30mA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar +12V charge-pump DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX662ACPA+ | Same electrical specs, but in 8-pin plastic DIP package (longer lead form, larger footprint) | Preferred for prototyping, through-hole assembly, or legacy board rework where SO mounting is unavailable | Select MAX662ACPA+ only when manual soldering or socket-based evaluation is required; not suitable for automated SMT lines |
| MAX734ESA+ | Switch-mode PWM converter delivering 120mA guaranteed output; requires inductor and higher component count | Used where >30mA flash programming current or multi-byte parallel programming is needed | Choose MAX734ESA+ only if output current demand exceeds 30mA; trade-off is added inductor size, EMI filtering, and layout complexity |
Compared with MAX662ACPA+, MAX662ACSA+ offers identical performance in a smaller, surface-mount package optimized for volume production. Compared with MAX734ESA+, MAX662ACSA+ trades higher current capability for inductor-free simplicity, lower EMI, and reduced BOM count-making it optimal for space- and noise-sensitive flash programming.
Availability
MAX662ACSA+ is available at Aetrix Electronics and suitable for flash memory programming supplies, compact op-amp biasing, and low-voltage MOSFET gate driving requiring stable component supply, consistent parametric performance, and long-term industrial availability.
Supply support for MAX662ACSA+ 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) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.
The MAX662A product line delivers regulated charge-pump DC-DC converters targeting flash memory programming and compact high-voltage bias generation-designed specifically to eliminate inductors while guaranteeing output current and regulation across commercial temperature ranges.
FAQ
What is the guaranteed output current specification for MAX662ACSA+?
The MAX662ACSA+ guarantees 30mA continuous output current at +12V ±5% under all operating conditions across its 0°C to +70°C temperature range. This is confirmed in the Electrical Characteristics table under "Output Current" with test conditions specifying VCC = 4.75V to 5.5V and full temperature coverage. Absolute maximum continuous output is rated at 50mA, but guaranteed performance is strictly 30mA.
Does MAX662ACSA+ require an inductor?
No, the MAX662ACSA+ is a capacitor-based charge-pump converter and requires no inductor. It uses only four external capacitors (two 0.22µF charge-pump caps and two 4.7µF input/output filter caps) to generate +12V from a 5V supply. This eliminates magnetic components, reduces EMI, and enables ultra-compact PCB layouts-explicitly stated in the General Description and Features sections.
What is the shutdown behavior of MAX662ACSA+?
When SHDN is driven high, the MAX662ACSA+ enters shutdown mode: internal charge pumps halt, VOUT connects to VCC via a 1kΩ internal switch, and supply current drops to 0.5µA. VOUT decays to VCC level in ~13ms. Upon SHDN going low, output recovers to +12V in ~400µs (at VCC = 5V). This behavior is documented in the Detailed Description and Typical Operating Characteristics sections.
Is MAX662ACSA+ pin-compatible with MAX662?
Yes, the MAX662ACSA+ is explicitly described as a "pin-compatible upgrade to the MAX662" with identical pinout, function, and package dimensions. It improves upon the MAX662 with lower quiescent current (185µA vs. unspecified higher value), guaranteed output current over temperature, and elimination of optional capacitor C3-confirmed in the General Description and Applications Information sections.
What capacitor types are recommended for MAX662ACSA+?
For C1 and C2 (charge-pump capacitors), ceramic or tantalum capacitors in the 0.22µF to 1.0µF range are recommended-0.22µF ceramics for commercial temperature operation (Figure 3a), 1.0µF tantalums for extended/military ranges (Figure 3b). For C4 (input) and C5 (output), 4.7µF tantalum (e.g., Sprague 595D475X9016A7) is specified for minimum board area; ceramic values may be reduced to 2µF and 1µF respectively per Applications Information.
MAX662ACSA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- Current - Output:
- 30mA
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX662ACSA+ FAQ
1.How can I place an order for MAX662ACSA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX662ACSA+ 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 MAX662ACSA+ reliable?
The price and inventory of MAX662ACSA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX662ACSA+ is usually 5 days.
3.What payment methods are accepted for MAX662ACSA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX662ACSA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX662ACSA+?
MAX662ACSA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX662ACSA+ 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 MAX662ACSA+?
For technical support, including MAX662ACSA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX662ACSA+ requirements.
6.How does Aetrix verify that MAX662ACSA+ is sourced from the original manufacturer or authorized distributors?
All MAX662ACSA+ 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 MAX662ACSA+ meets industry standards.
7.What is the process for return or replacement of MAX662ACSA+?
All MAX662ACSA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX662ACSA+, 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 MAX662ACSA+ part is unused and in its original packaging.
Return procedure for MAX662ACSA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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