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Analog Devices Inc./Maxim Integrated MAX662ACSA-T
- Part No.:
- MAX662ACSA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX662ACSA-T.pdf
- Description:
- IC REG CHARG PUMP 12V 30MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
MAX662ACSA-T 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-T datasheet, MAX662ACSA-T pinout, MAX662ACSA-T application, or MAX662ACSA-T 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-T implements a pulse-skipping feedback control scheme to regulate +12V output by dynamically adjusting charge-pump switching frequency based on load and input voltage. Its internal oscillator runs at 500kHz nominal, enabling capacitor-based voltage tripling without magnetic components.
It features TTL/CMOS-compatible active-high SHDN with internal VCC pull-up, connecting VIN to VOUT via a 1kΩ switch in shutdown mode. Output voltage drops to VCC in ~13ms on entry and rises to 12V in ~400µs on exit, supporting microprocessor-controlled flash programming sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +12V ±5% - meets JEDEC-compliant flash VPP programming spec over full load and temperature range |
| Output Current | Guaranteed 30mA continuous - sufficient for byte-wide flash write/erase cycles without derating |
| Input Voltage Range | 4.75V to 5.5V - compatible with standard 5V ±5% logic rails and avoids need for pre-regulation |
| Quiescent Current | 185µA - enables low-power standby in battery-backed or portable programming fixtures |
| Shutdown Current | 0.5µA - allows microcontroller-gated power delivery with negligible leakage during idle states |
| Oscillator Frequency | 500kHz nominal - determines charge-pump switching rate and ripple frequency for capacitor sizing |
| Power Efficiency | 76% typical at 5V/30mA - minimizes thermal rise in space-constrained PCB layouts |
Pinout & Package
MAX662ACSA-T is housed in an 8-pin narrow SO (SOIC) surface-mount package measuring 0.154" × 0.209" (3.9mm × 5.3mm), optimized for <0.1in² board area. Pin assignments are validated per Maxim's official pin configuration diagram and top-view marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1− | Negative terminal of first charge-pump capacitor | Return path 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 and to C2− during transfer phase |
| C2− | Negative terminal of second charge-pump capacitor | Intermediate node tied to C1+ during voltage-tripling transfer; critical for ripple suppression |
| C2+ | Positive terminal of second charge-pump capacitor | Output-side connection of C2; forms series stack with C1 to generate boosted voltage |
| GND | Ground reference | Common return for all internal circuitry and external capacitors; requires low-impedance plane |
| VOUT | +12V regulated output | Supplies flash VPP; connects to VCC via 1kΩ internal switch during shutdown |
| VCC | Input supply (4.75V–5.5V) | Primary power source; also powers internal logic, oscillator, and error amplifier |
| SHDN | Active-high shutdown control | CMOS/TTL-compatible input; internally pulled up to VCC; drives internal switch array to halt pumping |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor architecture | Eliminates EMI-sensitive magnetics and simplifies layout-only four MLCC/tantalum caps required |
| +12V ±5% regulation | Maintains flash programming voltage within JEDEC-specified tolerance across 0–30mA and 0°C to +70°C |
| Logic-controlled shutdown | Reduces system standby power to 0.5µA while preserving fast 400µs wake-up for burst programming |
| Pin-compatible upgrade | Direct replacement for MAX662 with lower quiescent current and extended temperature guarantee |
| Surface-mount package | 8-pin narrow SO footprint supports automated assembly and high-density routing in compact designs |
Applications
| Flash Memory Programming | Compact Op-Amp Bias Supply |
|---|---|
Use Scenario: Generating VPP for byte-wide flash EEPROM write/erase cycles in microcontroller-based data loggers. IC Role / Device Role / Timing Role: Regulated +12V power source synchronized to MCU GPIO control via SHDN pin. Use Value: Enables reliable flash programming at 30mA without inductor-induced noise or thermal derating in 0.1in² footprint. | Use Scenario: Providing clean +12V bias for rail-to-rail op-amps in portable sensor signal conditioning circuits. IC Role / Device Role / Timing Role: Low-noise, capacitor-based DC-DC booster replacing linear regulators to improve efficiency. Use Value: Delivers stable 12V at 30mA with 76% efficiency and <100mV ripple, reducing heat and extending battery life. |
| Low-Voltage MOSFET Gate Drive | Dual +12V/+20V Supply Generation |
Use Scenario: Driving high-threshold N-channel MOSFETs in 5V-powered motor control H-bridges. IC Role / Device Role / Timing Role: On-demand gate voltage booster activated only during switching transitions. Use Value: Reduces system standby current to 0.5µA using SHDN, while delivering 12V at 30mA for fast turn-on. | 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 configured in dual-output topology with external diodes. Use Value: Achieves +20V at up to 16mA while maintaining +12V at 30mA-enabling dual-rail systems without extra converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated +12V charge-pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX662ACPA | Same electrical specs, but in 8-pin plastic DIP package (0.300" wide) | Through-hole assembly; larger footprint; higher thermal resistance (727mW vs. 471mW) | Select for prototyping, manual soldering, or legacy through-hole designs requiring identical functionality |
| MAX662AESA | Identical function and pinout, rated for −40°C to +85°C operating range | Extended temperature support for automotive or industrial environments beyond commercial grade | Select when operation outside 0°C–+70°C is required; otherwise MAX662ACSA-T suffices for commercial applications |
Compared with MAX662ACPA and MAX662AESA, the MAX662ACSA-T offers optimal balance of compact SO packaging, commercial-temperature performance, and cost for high-volume flash programming modules where space and surface-mount assembly are priorities.
Availability
MAX662ACSA-T 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, consistent parametric performance, and long-term manufacturability.
Supply support for MAX662ACSA-T 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 delivers regulated charge-pump DC-DC conversion for non-inductive +12V generation in flash programming and low-power analog biasing applications.
FAQ
What is the operating temperature range for the MAX662ACSA-T?
The MAX662ACSA-T is specified for operation from 0°C to +70°C-the commercial temperature grade. This range covers standard industrial and consumer electronics environments where ambient conditions remain within typical room-temperature bounds. The device guarantees its full set of electrical specifications-including ±5% output regulation and 30mA output current-across this entire span. For extended-range applications, consider the MAX662AESA variant rated from −40°C to +85°C.
Does the MAX662ACSA-T require an inductor?
No, the MAX662ACSA-T does not require an inductor. It uses a capacitor-based charge-pump architecture to generate +12V from a 4.75V–5.5V input. Only four external capacitors are needed: two 0.22µF charge-pump caps (C1, C2) and two 4.7µF input/output filter caps (C4, C5). This eliminates magnetic components, reduces EMI, and enables ultra-compact layouts-key advantages confirmed in Maxim's typical operating circuit and layout guidelines.
How does the shutdown feature work on the MAX662ACSA-T?
The MAX662ACSA-T enters shutdown when the SHDN pin is driven high (TTL/CMOS logic level). Internally, SHDN is pulled up to VCC, so grounding the pin enables normal operation. In shutdown, the charge pumps halt, and VOUT connects to VCC through a 1kΩ internal switch. Shutdown current drops to 0.5µA, and VOUT decays to VCC in ~13ms. Release (SHDN low) restores 12V output in ~400µs-ideal for microprocessor-gated flash programming.
Can the MAX662ACSA-T be used for dual +12V and +20V outputs?
Yes, the MAX662ACSA-T can generate both +12V and +20V from a single 5V input using the dual-output configuration shown in Maxim's Figure 4. This topology adds two 1N5818 Schottky diodes and a 1µF capacitor to derive +20V while retaining the primary +12V output. At 34mA load on the +12V rail, the +20V output delivers up to 16mA-validated in Figure 5. This capability makes the MAX662ACSA-T suitable for mixed-voltage systems like multi-rail sensor interfaces or programmable logic power supplies.
Is the MAX662ACSA-T pin-compatible with the original MAX662?
Yes, the MAX662ACSA-T is fully pin-compatible with the MAX662 and serves as a recommended drop-in upgrade. It retains identical pin functions, package dimensions, and external component requirements. Key improvements include lower quiescent current (185µA vs. unspecified higher value), guaranteed 30mA output across temperature, and elimination of the optional C3 capacitor. No PCB changes are required when migrating from MAX662 to MAX662ACSA-T in existing designs.
MAX662ACSA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-T FAQ
1.How can I place an order for MAX662ACSA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX662ACSA-T 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-T reliable?
The price and inventory of MAX662ACSA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX662ACSA-T is usually 5 days.
3.What payment methods are accepted for MAX662ACSA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX662ACSA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX662ACSA-T?
MAX662ACSA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX662ACSA-T 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-T?
For technical support, including MAX662ACSA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX662ACSA-T requirements.
6.How does Aetrix verify that MAX662ACSA-T is sourced from the original manufacturer or authorized distributors?
All MAX662ACSA-T 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-T meets industry standards.
7.What is the process for return or replacement of MAX662ACSA-T?
All MAX662ACSA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX662ACSA-T, 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-T part is unused and in its original packaging.
Return procedure for MAX662ACSA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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