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Analog Devices Inc./Maxim Integrated MAX662ACPA
- Part No.:
- MAX662ACPA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX662ACPA.pdf
- Description:
- IC REG CHARG PUMP 12V 30MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,610
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Product details
Overview
MAX662ACPA 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 plastic DIP package.
For engineers reviewing the MAX662ACPA datasheet, MAX662ACPA pinout, MAX662ACPA application, or MAX662ACPA equivalent, key selection considerations include guaranteed 30mA output at ±5% regulation, 0.5µA shutdown current, 185µA quiescent current, and compatibility with byte-wide flash VPP programming requirements.
Technical Context
The MAX662ACPA 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 operates at 500kHz nominal frequency, enabling efficient voltage tripling via two external flying capacitors (C1, C2) and two filter capacitors (C4, C5).
It integrates TTL/CMOS-compatible logic-controlled shutdown (active-high SHDN), internally pulled up to VCC, which disables charge-pump action and connects VOUT to VCC through a 1kΩ switch. Output voltage settles to 12V in ~400µs after exit from shutdown, with VOUT declining to VCC in ~13ms upon entry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +12V ±5% - ensures reliable flash memory programming within JEDEC-compliant VPP tolerance |
| Output Current | Guaranteed 30mA continuous - sufficient for byte-wide flash write/erase cycles |
| Input Voltage Range | 4.75V to 5.5V - compatible with standard 5V ±5% logic supply rails |
| Quiescent Current | 185µA - minimizes standby power in battery-backed or low-power systems |
| Shutdown Current | 0.5µA - enables microprocessor-controlled power gating without significant leakage |
| Oscillator Frequency | 500kHz nominal - determines charge-transfer timing and ripple profile under load |
| Power Efficiency | 76% typical at 5V input, 30mA load - reduces thermal stress in compact layouts |
Pinout & Package
MAX662ACPA is housed in an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and 0.1-inch lead pitch, suitable for through-hole prototyping and industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1− | Negative terminal of first flying capacitor | Completes charge phase for C1 during pump cycle; must be low-inductance connection |
| 2 C1+ | Positive terminal of first flying capacitor | Connects to VCC during charging phase; critical path for energy transfer |
| 3 C2− | Negative terminal of second flying capacitor | Forms series stack with C1+ to enable voltage tripling; shared node with C1− in transfer mode |
| 4 C2+ | Positive terminal of second flying capacitor | Connected to VOUT during transfer phase; defines high-side output node |
| 5 VCC | Main power input | Supplies all internal circuitry and flying capacitors; requires local 4.7µF bypass (C4) |
| 6 VOUT | +12V regulated output | Delivers programming voltage to flash VPP; includes 4.7µF output filter (C5) for ripple suppression |
| 7 GND | Ground reference | Common return for all internal blocks and external capacitors; must be low-impedance plane |
| 8 SHDN | Active-high shutdown control | CMOS/TTL-compatible input; internally pulled up to VCC; tie to GND for normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Regulated +12V ±5% output | Meets JEDEC flash programming voltage tolerance without external feedback components |
| No inductor required | Enables fully capacitor-based, surface-mountable design with <0.1in² board area |
| Logic-controlled 0.5µA shutdown | Allows microprocessor-gated VPP activation with negligible standby current penalty |
| Guaranteed 30mA output over full temperature range | Ensures consistent flash programming performance from 0°C to +70°C without derating |
| Pin-compatible upgrade to MAX662 | Supports drop-in replacement in legacy designs while improving quiescent and shutdown currents |
Applications
| Flash Memory Programming Supply | Compact +12V Op-Amp Supply |
|---|---|
Use Scenario: Generating VPP for byte-wide flash EEPROM write/erase operations in embedded controllers. IC Role / Device Role / Timing Role: Regulated high-voltage DC-DC converter providing precise +12V programming voltage on demand. Use Value: Eliminates need for external inductors and simplifies layout while guaranteeing 30mA at ±5% regulation across commercial temperature range. | Use Scenario: Powering rail-to-rail op-amps requiring clean +12V bias in space-constrained instrumentation. IC Role / Device Role / Timing Role: Low-noise, capacitor-based boost supply delivering stable +12V from 5V logic rail. Use Value: Achieves <0.1in² footprint with 76% efficiency and 185µA quiescent current-ideal for portable analog front-ends. |
| Low-Voltage MOSFET Gate Driver | Dual +12V/+20V Supply Generator |
Use Scenario: Driving N-channel MOSFETs in 5V-system power switches needing >10V gate overdrive. IC Role / Device Role / Timing Role: On-demand high-side gate voltage source activated via microcontroller SHDN pin. Use Value: Provides fast 400µs VOUT ramp-up and 13ms graceful shutdown decay-prevents shoot-through during transition. | Use Scenario: Simultaneously powering flash VPP (+12V) and high-voltage logic or sensor bias (+20V) from single 5V rail. IC Role / Device Role / Timing Role: Core charge-pump IC reconfigured with external diodes to generate dual regulated outputs. Use Value: Enables +20V output up to 19.2mA (at +25°C, unloaded +12V rail) using same footprint and control logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge-pump DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX662ACSA | Same electrical specs, but in 8-pin SO package (surface-mount) | Requires rework for PCB layout; better thermal performance and smaller footprint | Select when automated SMT assembly, higher density, or improved thermal management is required |
| MAX734CPA | Switch-mode PWM converter; 120mA output, 4.5V–5.5V input, requires inductor | Higher output current and efficiency, but larger solution size and EMI sensitivity | Select when >30mA flash programming or multi-device parallel operation is needed |
Compared with MAX662ACSA and MAX734CPA, the MAX662ACPA offers the smallest board area and simplest BOM for 30mA flash programming, trading off current capability and package format-but remains optimal where through-hole assembly, minimal component count, and proven reliability in commercial-temperature embedded systems are prioritized.
Availability
MAX662ACPA 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 across industrial and embedded OEM programs.
Supply support for MAX662ACPA 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.
The MAX662A product line was engineered specifically to replace inductor-based solutions in flash memory programming circuits-delivering regulated +12V with zero magnetic components, minimal board area, and microprocessor-controllable shutdown.
FAQ
What is the maximum continuous output current specification for the MAX662ACPA?
The MAX662ACPA guarantees 30mA continuous output current across its full operating temperature range (0°C to +70°C). While the absolute maximum rating allows 50mA, sustained operation above 30mA may cause output voltage droop beyond ±5% tolerance or thermal stress. The device's pulse-skipping regulation maintains stability only within the 30mA specified limit under all conditions.
Does the MAX662ACPA require an external feedback resistor network to regulate its +12V output?
No, the MAX662ACPA does not require external feedback resistors. Its +12V ±5% output is internally regulated using a precision bandgap reference and pulse-skipping control loop. All regulation circuitry-including error amplifier, oscillator, and charge-pump drivers-is integrated, making the MAX662ACPA a fully self-contained solution requiring only four external capacitors.
Can the MAX662ACPA be used to power devices other than flash memory?
Yes, the MAX662ACPA is routinely applied beyond flash programming-including compact +12V op-amp supplies, low-voltage MOSFET gate drivers, and dual-output (+12V/+20V) configurations. Its regulated output, low quiescent current (185µA), and logic-controlled shutdown make it suitable for any system needing a small-footprint, capacitor-only +12V source from a 5V rail.
What is the function of the SHDN pin on the MAX662ACPA, and how should it be connected?
The SHDN pin on the MAX662ACPA is an active-high, CMOS/TTL-compatible input that halts charge-pump operation and connects VOUT to VCC via a 1kΩ internal switch. For normal operation, SHDN must be tied to GND. Leaving it unconnected defaults to VCC (shutdown) due to internal pull-up. Driving SHDN high reduces supply current to 0.5µA, enabling microprocessor-controlled VPP activation.
Is the MAX662ACPA pin-compatible with the original MAX662, and what improvements does it offer?
Yes, the MAX662ACPA is 100% pin-compatible with the MAX662 and serves as a direct upgrade. It improves quiescent current (185µA vs. unspecified higher value), reduces shutdown current (0.5µA vs. ~5µA), guarantees 30mA output across temperature, and eliminates the need for external capacitor C3-simplifying the BOM and enhancing reliability without layout changes.
MAX662ACPA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
MAX662ACPA FAQ
1.How can I place an order for MAX662ACPA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX662ACPA 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 MAX662ACPA reliable?
The price and inventory of MAX662ACPA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX662ACPA is usually 5 days.
3.What payment methods are accepted for MAX662ACPA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX662ACPA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX662ACPA?
MAX662ACPA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX662ACPA 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 MAX662ACPA?
For technical support, including MAX662ACPA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX662ACPA requirements.
6.How does Aetrix verify that MAX662ACPA is sourced from the original manufacturer or authorized distributors?
All MAX662ACPA 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 MAX662ACPA meets industry standards.
7.What is the process for return or replacement of MAX662ACPA?
All MAX662ACPA units undergo pre-shipment inspection (PSI). If there is an issue with MAX662ACPA, 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 MAX662ACPA part is unused and in its original packaging.
Return procedure for MAX662ACPA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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