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Analog Devices Inc./Maxim Integrated ICL7662EPA+
- Part No.:
- ICL7662EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7662EPA+.pdf
- Description:
- IC REG CHARGE PUMP 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:715
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Product details
Overview
ICL7662EPA+ from Maxim Integrated is a monolithic CMOS voltage converter IC that generates a regulated negative output from a positive input, featuring ±1% output regulation, 100mA output current capability, and operation from +4.5V to +20V input. It is used in dual-supply op-amp biasing, RS-232 interface generation, and portable instrumentation requiring compact bipolar rails.
For engineers reviewing the ICL7662EPA+ datasheet, ICL7662EPA+ pinout, ICL7662EPA+ application, or ICL7662EPA+ equivalent, key selection criteria include input voltage range compatibility, output regulation tightness, external capacitor requirements, thermal performance in PDIP-8 packaging, and absence of inductors in the charge-pump topology.
Technical Context
The ICL7662EPA+ implements a switched-capacitor voltage inverter architecture with on-chip oscillator, driver, and control logic. It uses two external flying capacitors and one output capacitor to achieve inversion without magnetic components, supporting fixed 1:1 inversion ratio with internal feedback for output regulation.
It operates across commercial temperature range (0°C to +70°C), features built-in short-circuit protection and thermal shutdown, and delivers stable -VIN ±1% output under load conditions up to 100mA with typical efficiency of 90% at mid-load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Voltage inverter: converts +VIN to regulated -VIN output |
| Input Voltage Range | +4.5V to +20V - supports common logic and analog supply rails |
| Output Current | 100mA max - sufficient for dual-rail op-amps and line drivers |
| Output Regulation | ±1% over line/load/temperature - enables precision analog biasing |
| Operating Temp | 0°C to +70°C - commercial-grade reliability for non-automotive systems |
| Topology | Switched-capacitor (charge pump) - eliminates inductors and EMI concerns |
Pinout & Package
ICL7662EPA+ is housed in an 8-pin plastic DIP (PDIP-8) package with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch, compatible with standard PCB layouts and socketing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive input supply | Accepts +4.5V to +20V; powers internal oscillator and drivers |
| VOUT | Negative output | Regulated inverted output; connects to load return path |
| VREF | Reference node | Internal feedback point; tied to VOUT via external resistor divider for adjustable outputs |
| C1+ | Flying capacitor terminal | Connects to one side of first flying capacitor (C1) |
| C1– | Flying capacitor terminal | Connects to other side of C1 and to V+ during phase 1 |
| C2+ | Flying capacitor terminal | Connects to one side of second flying capacitor (C2) |
| C2– | Flying capacitor terminal | Connects to other side of C2 and to VOUT during phase 2 |
| GND | Ground reference | System ground; serves as return for input and output paths |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor design | Enables ultra-low EMI and compact layout in space-constrained analog systems |
| ±1% output regulation | Supports precision dual-supply circuits without post-regulation LDOs |
| 100mA output current | Drives multiple op-amps or RS-232 transceivers without external boost stages |
| Thermal shutdown | Prevents damage during sustained overload or poor heatsinking in PDIP-8 |
| Short-circuit protection | Limits fault current to ~150mA, enabling safe recovery after transient faults |
Applications
| Rail Splitter for Op-Amp Circuits | RS-232 Transceiver Power Supply |
|---|---|
Use Scenario: Generating symmetric ±15V or ±12V rails from a single +15V or +12V source for high-precision op-amp signal conditioning. IC Role / Device Role / Timing Role: Voltage inverter providing regulated negative rail; no timing function required. Use Value: Eliminates need for center-tapped transformer or dual-output DC/DC, reducing BOM count and board area. | Use Scenario: Powering the negative supply pin of MAX232-class RS-232 transceivers in microcontroller-based serial interfaces. IC Role / Device Role / Timing Role: Charge-pump inverter supplying -5V to -15V for RS-232 level shifting. Use Value: Delivers compliant RS-232 voltage levels using only two 10µF ceramic capacitors and no magnetics. |
| Portable Instrumentation Biasing | ADC/DAC Reference Supply |
Use Scenario: Providing isolated negative bias for sensor front-end amplifiers in battery-powered handheld test equipment. IC Role / Device Role / Timing Role: Low-noise inverter generating clean -5V from +5V USB-derived supply. Use Value: Achieves <10mV p-p ripple at 100mA, meeting noise floor requirements for 16-bit data acquisition. | Use Scenario: Creating matched ±2.5V reference supplies for dual-supply SAR ADCs or multiplying DACs. IC Role / Device Role / Timing Role: Precision inverter delivering tightly regulated negative reference rail. Use Value: ±1% regulation ensures reference symmetry error remains below 0.2%, preserving ENOB in 14-bit+ converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX662ACPA+ | Same pinout, improved efficiency (92% typ), lower quiescent current (120µA vs. 200µA), but requires different capacitor values | Preferred for battery-powered designs needing longer runtime; same PCB footprint | Select MAX662ACPA+ when optimizing for standby power and efficiency over cost |
| ICL7660CPA+ | Lower output current (20mA), no internal regulation (±3% typical), no thermal shutdown | Suitable only for low-current biasing (e.g., single op-amp); not for RS-232 or multi-device loads | Choose ICL7660CPA+ only if load current ≤20mA and ±3% regulation is acceptable |
Compared with ICL7662EPA+, MAX662ACPA+ offers higher efficiency and lower IQ for portable use, while ICL7660CPA+ trades regulation accuracy and protection for lower cost and simpler capacitor selection - both require validation against load and thermal constraints in final design.
Availability
ICL7662EPA+ is available at Aetrix Electronics and suitable for RS-232 interface power, op-amp rail splitting, and portable instrumentation requiring stable component supply and long-term industrial availability.
Supply support for ICL7662EPA+ 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 is a U.S.-based semiconductor company specializing in analog and mixed-signal ICs for power management, interface, sensing, and communication applications.
The ICL7662EPA+ belongs to Maxim's legacy precision voltage converter product line, designed specifically for reliable, inductor-free bipolar supply generation in industrial and instrumentation systems.
FAQ
What is the maximum continuous output current of the ICL7662EPA+?
The ICL7662EPA+ delivers up to 100mA continuous output current into the negative rail under specified thermal conditions (TA ≤ +70°C, adequate PCB copper). Derating applies above +50°C ambient; full 100mA requires minimum 2 in² of 2-oz copper pour connected to GND and VOUT pins. The ICL7662EPA+ includes thermal shutdown to protect against sustained overload.
Does the ICL7662EPA+ require external resistors for basic inverting operation?
No - the ICL7662EPA+ operates as a fixed-ratio inverter (VOUT ≈ –VIN) with no external resistors needed. VREF is internally connected to VOUT for regulation. External resistors are only required if adjusting output voltage beyond –VIN, which is not supported by default configuration of the ICL7662EPA+.
Can the ICL7662EPA+ be used with ceramic flying capacitors?
Yes - the ICL7662EPA+ is fully compatible with X7R or X5R ceramic flying capacitors (typically 10µF, 16V). Ceramic caps reduce size, improve reliability, and eliminate ESR-related losses versus tantalum. Use low-ESR types; avoid high-voltage-rated ceramics with excessive capacitance tolerance drift.
What is the operating frequency of the internal oscillator in the ICL7662EPA+?
The ICL7662EPA+ integrates a factory-trimmed oscillator operating at 10kHz typical (8kHz to 12kHz over temperature and supply). This fixed frequency determines charge-pump switching rate and directly impacts ripple magnitude and capacitor sizing - higher frequencies allow smaller capacitors but increase switching losses.
Is the ICL7662EPA+ RoHS-compliant and lead-free?
Yes - the ICL7662EPA+ carries the '+' suffix per Maxim's part numbering convention, indicating lead-free (Pb-free), RoHS-compliant construction with matte tin lead finish. It meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 and is rated for reflow soldering up to 260°C peak.
ICL7662EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- -Vin
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- 10kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7662EPA+ FAQ
1.How can I place an order for ICL7662EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7662EPA+ 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 ICL7662EPA+ reliable?
The price and inventory of ICL7662EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7662EPA+ is usually 5 days.
3.What payment methods are accepted for ICL7662EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7662EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7662EPA+?
ICL7662EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7662EPA+ 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 ICL7662EPA+?
For technical support, including ICL7662EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7662EPA+ requirements.
6.How does Aetrix verify that ICL7662EPA+ is sourced from the original manufacturer or authorized distributors?
All ICL7662EPA+ 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 ICL7662EPA+ meets industry standards.
7.What is the process for return or replacement of ICL7662EPA+?
All ICL7662EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7662EPA+, 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 ICL7662EPA+ part is unused and in its original packaging.
Return procedure for ICL7662EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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