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Analog Devices Inc./Maxim Integrated MAX662AESA+T
- Part No.:
- MAX662AESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX662AESA+T.pdf
- Description:
- IC REG CHARG PUMP 12V 30MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,833
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Product details
Overview
MAX662AESA+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 inductors, uses only four external capacitors, and operates across –40°C to +85°C.
For engineers reviewing the MAX662AESA+T datasheet, MAX662AESA+T pinout, MAX662AESA+T application, or MAX662AESA+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 MAX662AESA+T implements a pulse-skipping feedback control scheme that monitors VOUT and activates internal charge pumps only when output voltage droops. Its dual-capacitor voltage-tripling architecture (C1/C2) enables +12V generation without magnetic components.
It features a logic-controlled, active-high SHDN pin with internal VCC pull-up; in shutdown, VOUT connects to VCC via a 1kΩ switch, reducing supply current to 0.5µA. Oscillation frequency is nominally 500kHz under full load and varies dynamically with load and input voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +12V ±5% - meets JEDEC-compliant flash VPP programming spec across temperature and load |
| 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 rails |
| Quiescent Current | 185µA - enables low-power standby in microprocessor-controlled programming sequences |
| Shutdown Current | 0.5µA - allows deep sleep during flash idle periods without external power gating |
| Oscillator Frequency | 500kHz nominal - determines capacitor sizing and ripple profile; scales with load |
| Efficiency | 76% typical at 5V/30mA - minimizes thermal rise in space-constrained PCB layouts |
Pinout & Package
MAX662AESA+T is housed in an 8-pin narrow SO (SOIC-N) package, 3.9mm × 4.9mm footprint, with gull-wing leads and 1.27mm pitch. Pin 1 marked by beveled corner.
| 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 | Switched node connecting C1 to VCC and VOUT; critical for voltage tripling path |
| C2− | Negative terminal of second charge-pump capacitor | Shared reference between C1 and C2; ties to internal switching matrix ground |
| C2+ | Positive terminal of second charge-pump capacitor | High-side switching node enabling series stacking of C1 and C2 for 3× multiplication |
| GND | Power and signal ground reference | Common return for all internal circuitry; must connect to low-impedance system ground plane |
| VOUT | +12V regulated output | Supplies flash VPP; connects to VCC via 1kΩ switch in shutdown mode |
| VCC | Main supply input (4.75V–5.5V) | Power source for internal oscillator, control logic, and charge-pump drivers |
| 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 |
|---|---|
| Inductorless charge-pump topology | Eliminates EMI-sensitive magnetics and simplifies layout-only four surface-mount capacitors required |
| Logic-controlled shutdown | Reduces system-level standby power by >99.7% versus active operation, enabling µP-synchronized VPP enable |
| Guaranteed output over full temp range | Delivers 30mA at ±5% regulation from –40°C to +85°C-no derating needed for industrial environments |
| Pin-compatible upgrade to MAX662 | Direct drop-in replacement with lower quiescent/shutdown currents and no need for optional C3 capacitor |
| Surface-mount only design | Entire solution fits in <0.1 in² board area-ideal for high-density flash programming modules and memory cards |
Applications
| Flash Memory Programming | 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: Regulated +12V high-impedance programming supply, enabled/disabled synchronously with µP firmware commands. Use Value: Eliminates need for discrete boost converters or transformer-based solutions-reduces BOM count and layout area by >40%. | 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, low-quiescent auxiliary supply decoupled from main 5V rail. Use Value: Enables dual-supply op-amp operation without inductor-induced switching noise corrupting analog signal paths. |
| MOSFET Gate Driving | Dual +12V/+20V Supply |
Use Scenario: Driving high-side N-channel MOSFETs in low-voltage (<6V) battery-powered motor control stages. IC Role / Device Role / Timing Role: Local high-side gate voltage generator synchronized to PWM timing. Use Value: Allows use of efficient N-MOSFETs instead of P-MOSFETs or level-shifters-improves RDS(on) and reduces conduction loss. | Use Scenario: Simultaneous generation of +12V and +20V from single 5V input in multi-rail sensor interface modules. IC Role / Device Role / Timing Role: Primary +12V regulator augmented with external diode-capacitor doubler for +20V rail. Use Value: Achieves dual-output capability with <1% additional component count-no second IC or controller required. |
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 functionality but rated for 0°C to +70°C commercial temperature range; identical pinout and electrical specs | Suitable for non-industrial environments where extended temperature operation is not required | Select MAX662ACSA for cost-sensitive consumer or lab-grade designs operating within 0°C–70°C |
| MAX734ESA+ | Switch-mode (PWM) architecture delivering 120mA; requires inductor; higher efficiency (85%) at full load | Used when >30mA flash programming current or tighter regulation under dynamic load is required | Choose MAX734ESA+ only if output current demand exceeds 30mA or inductor use is acceptable |
Compared with MAX662ACSA, the MAX662AESA+T offers extended temperature support and slightly improved shutdown current; compared with MAX734ESA+, it trades higher current capability for inductorless simplicity and smaller footprint-making MAX662AESA+T optimal for space-constrained, 30mA flash programming.
Availability
MAX662AESA+T is available at Aetrix Electronics and suitable for flash memory programming, compact op-amp biasing, and MOSFET gate driving applications requiring stable component supply, long-term industrial temperature support, and inductor-free design.
Supply support for MAX662AESA+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 MAX662AESA+T belongs to Maxim's charge-pump DC-DC converter product line, engineered specifically to replace inductor-based solutions in flash memory VPP generation and other compact, low-noise, medium-current biasing applications.
FAQ
What is the operating temperature range of the MAX662AESA+T?
The MAX662AESA+T is specified for operation from –40°C to +85°C. This extended industrial temperature range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the datasheet. It ensures reliable performance in demanding environments such as factory automation controllers and outdoor embedded systems where ambient temperatures exceed commercial-grade limits. The MAX662AESA+T maintains its guaranteed 30mA output and ±5% regulation across this full range.
Does the MAX662AESA+T require an external inductor?
No, the MAX662AESA+T does not require an external inductor. It uses a capacitor-based charge-pump topology with two external flying capacitors (C1 and C2) and two bypass/filter capacitors (C4 and C5). The datasheet explicitly states "No Inductor-Uses Only 4 Capacitors" in the Features list and confirms this in the General Description. This eliminates inductor-related EMI, size, and cost penalties-making the MAX662AESA+T ideal for ultra-compact PCB layouts.
How does the shutdown function work on the MAX662AESA+T?
The MAX662AESA+T features an active-high, CMOS/TTL-compatible SHDN pin (Pin 8) that is internally pulled up to VCC. When SHDN is driven high, the internal charge pumps halt, and VOUT connects to VCC through a 1kΩ internal switch-reducing supply current to just 0.5µA. When SHDN is grounded, the device operates normally. The datasheet specifies a typical 400µs startup time from shutdown to regulated +12V output at VCC = 5V.
Can the MAX662AESA+T be used to generate +20V in addition to +12V?
Yes, the MAX662AESA+T can generate +20V using an external diode-capacitor voltage doubler stage, as shown in Figure 4 of the datasheet. In this configuration, the +12V output serves as input to the doubler, yielding ~+20V. Figure 5 characterizes the +20V output current capability (up to ~19mA at 20V with 34mA load on the +12V rail). This dual-output capability is validated in the Applications Information section and requires no modification to the MAX662AESA+T itself.
Is the MAX662AESA+T pin-compatible with the original MAX662?
Yes, the MAX662AESA+T is fully pin-compatible with the MAX662. The General Description states it is "a pin-compatible upgrade to the MAX662" and "100%-compatible." Electrical differences include lower quiescent (185µA vs. unspecified higher value) and shutdown (0.5µA vs. unspecified) currents, plus guaranteed output current over full temperature range. The MAX662AESA+T also eliminates the need for optional capacitor C3 required by the MAX662.
MAX662AESA+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:
- 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX662AESA+T FAQ
1.How can I place an order for MAX662AESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX662AESA+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 MAX662AESA+T reliable?
The price and inventory of MAX662AESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX662AESA+T is usually 5 days.
3.What payment methods are accepted for MAX662AESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX662AESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX662AESA+T?
MAX662AESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX662AESA+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 MAX662AESA+T?
For technical support, including MAX662AESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX662AESA+T requirements.
6.How does Aetrix verify that MAX662AESA+T is sourced from the original manufacturer or authorized distributors?
All MAX662AESA+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 MAX662AESA+T meets industry standards.
7.What is the process for return or replacement of MAX662AESA+T?
All MAX662AESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX662AESA+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 MAX662AESA+T part is unused and in its original packaging.
Return procedure for MAX662AESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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