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Analog Devices Inc./Maxim Integrated MAX662AESA+
- Part No.:
- MAX662AESA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX662AESA+.pdf
- Description:
- IC REG CHARG PUMP 12V 30MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:648
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Product details
Overview
The MAX662AESA+ 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+ datasheet, MAX662AESA+ pinout, MAX662AESA+ application, or MAX662AESA+ equivalent, key selection criteria include guaranteed 30mA output at ±5% regulation, logic-controlled shutdown (0.5µA), 185µA quiescent current, and compatibility with compact surface-mount layouts under 0.1in².
Technical Context
The MAX662AESA+ implements a pulse-skipping feedback control scheme that monitors VOUT and activates internal charge-pump switches (S1/S2) only when output voltage droops. It performs voltage tripling via two-stage capacitor switching (C1/C2), achieving regulated +12V without magnetic components.
Its oscillator runs at 500kHz nominal frequency, with variable duty cycling to maintain regulation across load (0–30mA) and input (4.75–5.5V) variations. Shutdown mode disconnects charge pumps and connects VOUT to VCC through a 1kΩ internal switch, reducing supply current to 0.5µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | +12V ±5% - ensures reliable byte-wide flash VPP programming within JEDEC-compliant tolerance |
| Output Current | Guaranteed 30mA continuous - sufficient for standard flash memory programming pulses |
| Input Voltage Range | 4.75V to 5.5V - compatible with standard 5V ±5% logic rails and industrial 5V supplies |
| Quiescent Current | 185µA - enables low-power standby in microprocessor-controlled programming sequences |
| Shutdown Current | 0.5µA - allows deep power-down between flash write cycles without external circuitry |
| Oscillator Frequency | 500kHz nominal - supports fast transient response and compact capacitor sizing |
| Operating Temperature | –40°C to +85°C - qualified for extended industrial environments per MAX662AESA ordering code |
Pinout & Package
The MAX662AESA+ is housed in an 8-pin narrow SO (Small Outline) package, 150mil width, with gull-wing leads and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1− | Negative terminal of first charge-pump capacitor | Return path for C1 during charging phase; must be routed with minimal inductance |
| 2 C1+ | Positive terminal of first charge-pump capacitor | Node connected to S1/S2 switching network; critical for voltage tripling efficiency |
| 3 C2− | Negative terminal of second charge-pump capacitor | Common node between C1 and C2 during series connection; ties to internal switch matrix |
| 4 C2+ | Positive terminal of second charge-pump capacitor | High-side node of C2; forms series stack with C1 to generate 3×VCC intermediate voltage |
| 5 VCC | Main supply input | Power source for internal oscillator, logic, and charge-pump drivers; requires local 4.7µF bypass |
| 6 VOUT | +12V regulated output | Delivers programming voltage to flash VPP pin; connects to VCC via 1kΩ switch in shutdown |
| 7 GND | Analog and power ground reference | Common return for all internal circuits 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 |
|---|---|
| No-inductor architecture | Eliminates EMI-sensitive magnetics and simplifies layout-only four MLCC/tantalum capacitors required |
| Logic-controlled shutdown | Reduces system-level standby power by >99.7% versus active mode, enabling µP-synchronized VPP enable |
| Guaranteed 30mA over full temp range | Ensures consistent flash programming margin from –40°C to +85°C without derating |
| Surface-mount complete solution | Fits in <0.1in² board area using 8-pin SO package and 0201/0805-sized capacitors |
| Pin-compatible upgrade to MAX662 | Enables drop-in replacement with lower ICC and improved thermal stability-no layout change needed |
Applications
| Flash Memory Programming | Compact Op-Amp Bias Supply |
|---|---|
Use Scenario: Microcontroller-driven programming of byte-wide NOR flash (e.g., Intel 28Fxxx, AMD Am29xxx) requiring precise +12V VPP pulses. IC Role / Device Role / Timing Role: Regulated high-voltage supply generator; activated only during write/erase cycles via SHDN pin. Use Value: Delivers stable ±5% +12V at 30mA without inductors-reducing BOM count and board area vs. inductive boosters. | Use Scenario: Providing clean +12V bias for rail-to-rail op-amps in space-constrained instrumentation front-ends. IC Role / Device Role / Timing Role: Compact, low-noise auxiliary supply; operates continuously with 185µA quiescent draw. Use Value: Enables dual-supply op-amp operation from single 5V rail while occupying <0.1in² PCB area. |
| MOSFET Gate Driving | Dual +12V/+20V Supply |
Use Scenario: Generating +12V gate drive for high-side N-channel MOSFETs in low-voltage (<6V) DC-DC controllers or motor drivers. IC Role / Device Role / Timing Role: Fast-response HV supply; output enabled synchronously with PWM controller logic via SHDN. Use Value: Eliminates need for isolated gate drivers or transformer-based solutions-supports rapid turn-on with 400µs startup time. | Use Scenario: Simultaneous generation of +12V (for logic/programming) and +20V (for high-threshold devices) from one 5V input. IC Role / Device Role / Timing Role: Primary +12V source in cascaded charge-pump topology (Figure 4); feeds secondary doubler stage. Use Value: Achieves +20V at ~16mA while maintaining +12V regulation-enables dual-voltage systems without extra ICs. |
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; higher ICC (500µA typical) | Suitable for cost-sensitive consumer applications where extended temperature is not required | Select MAX662ACSA+ only if ambient operating temperature remains within 0°C–70°C and lower shutdown current is not critical |
| MAX734CPA+ | Switch-mode PWM converter; 120mA output, 85% efficiency, requires inductor and diode | Used when higher current (>30mA) or better efficiency is mandatory; trades board area for performance | Choose MAX734CPA+ only if flash programming demands >30mA sustained current or >76% efficiency is required |
Compared with MAX662ACSA+, the MAX662AESA+ offers wider temperature support and lower quiescent current; compared with MAX734CPA+, it eliminates inductors and reduces EMI but sacrifices output current and peak efficiency-making MAX662AESA+ optimal for compact, low-current flash programming.
Availability
The MAX662AESA+ 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 availability, and RoHS-compliant packaging.
Supply support for MAX662AESA+ 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 analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.
The MAX662AESA+ belongs to Maxim's charge-pump DC-DC converter product line, engineered specifically for inductorless, space-constrained +12V flash programming and auxiliary bias supply applications.
FAQ
What is the guaranteed output current specification for the MAX662AESA+?
The MAX662AESA+ guarantees 30mA continuous output current across its full operating temperature range of –40°C to +85°C. This is confirmed in the Electrical Characteristics table under "Output Current" with test conditions specifying VCC = 4.75V to 5.5V and load regulation verified at 30mA. Absolute maximum continuous output is 50mA, but guaranteed performance is specified at 30mA.
Does the MAX662AESA+ require an external inductor?
No, the MAX662AESA+ does not require an external inductor. It uses a capacitor-based charge-pump architecture with two external flying capacitors (C1 and C2) and two filter capacitors (C4 and C5). The datasheet explicitly states "No Inductor-Uses Only 4 Capacitors" and highlights this as a key feature to reduce EMI and board area.
What is the function of the SHDN pin on the MAX662AESA+?
The SHDN pin on the MAX662AESA+ is an active-high, CMOS/TTL-compatible shutdown control input. When driven high, it halts charge-pump switching and connects VOUT to VCC via a 1kΩ internal switch, reducing supply current to 0.5µA. When tied to GND, the MAX662AESA+ operates normally. The pin is internally pulled up to VCC, so no external pull-up is required.
Can the MAX662AESA+ be used to generate +20V in addition to +12V?
Yes, the MAX662AESA+ can be used in a cascaded configuration (as shown in Figure 4 of the datasheet) to generate both +12V and +20V from a single 5V input. In this setup, the MAX662AESA+ provides the +12V rail, which then feeds a secondary voltage-doubler stage to produce +20V. The +20V output delivers up to ~16mA when the +12V rail is loaded at 34mA.
What package type and temperature grade does the MAX662AESA+ have?
The MAX662AESA+ is packaged in an 8-pin narrow SO (Small Outline) surface-mount package and is rated for operation from –40°C to +85°C. This is explicitly defined in the Ordering Information table, where "ESA" denotes the extended temperature SO package variant-distinct from "CSA" (commercial) and "MJA" (military) versions.
MAX662AESA+ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX662AESA+ FAQ
1.How can I place an order for MAX662AESA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX662AESA+ 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+ reliable?
The price and inventory of MAX662AESA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX662AESA+ is usually 5 days.
3.What payment methods are accepted for MAX662AESA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX662AESA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX662AESA+?
MAX662AESA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX662AESA+ 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+?
For technical support, including MAX662AESA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX662AESA+ requirements.
6.How does Aetrix verify that MAX662AESA+ is sourced from the original manufacturer or authorized distributors?
All MAX662AESA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX662AESA+?
All MAX662AESA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX662AESA+, 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+ part is unused and in its original packaging.
Return procedure for MAX662AESA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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