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Analog Devices Inc./Maxim Integrated ICL7660AMJA/883B
- Part No.:
- ICL7660AMJA/883B
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
ICL7660AMJA/883B.pdf
- Description:
- IC REG CHARGE PUMP 20MA 8CERDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,941
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Product details
Overview
ICL7660AMJA/883B from Maxim Integrated is a military-grade, monolithic CMOS switched-capacitor voltage converter optimized for inverting +5V to -5V in analog power supplies. It operates from 1.5V to 10V input, delivers 10mA output with ≤0.5V drop at 5V input, achieves 98% typical power-conversion efficiency, and features no-external-diode operation across -55°C to +125°C. It is used in EIA/TIA-232E power rails and op-amp dual-supply generation in ruggedized instrumentation.
For engineers reviewing the ICL7660AMJA/883B datasheet, ICL7660AMJA/883B pinout, ICL7660AMJA/883B application, or ICL7660AMJA/883B equivalent, key selection criteria include its CERDIP-8 hermetic package, guaranteed -55°C to +125°C operation, absence of BOOST pin (distinguishing it from MAX1044), LV pin configuration for low-voltage compatibility, and verified 55Ω typical output resistance at 25°C with 5kHz oscillator frequency.
Technical Context
The ICL7660AMJA/883B implements a four-switch charge-pump topology with integrated MOSFETs and on-chip oscillator, enabling voltage inversion without external diodes. Its internal regulator supports 1.5V–10V operation, and the LV pin must be left open above 5V per datasheet specification.
Oscillator frequency is fixed at ~10kHz (typical) with no BOOST functionality-unlike the MAX1044-and is temperature- and supply-voltage-dependent. Output voltage is unregulated and load-dependent, with output resistance primarily governed by oscillator frequency and external capacitor values.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 10.0V - Enables direct use from single Li-ion or logic rails without pre-regulation. |
| Output Current | 10mA - Sufficient to power rail-to-rail op-amps, RS-232 transceivers, and low-power ADCs. |
| Output Voltage Drop | ≤0.5V at 10mA - Ensures -4.5V output from +5V input under full load, critical for analog signal headroom. |
| Power Efficiency | 95–98% - Minimizes thermal rise in sealed enclosures and extends battery life in portable systems. |
| Oscillator Frequency | ~10kHz (typical) - Places switching noise outside audio band while balancing ripple and quiescent current. |
| Output Resistance | 55Ω (typ, 25°C) - Determines load regulation slope: ΔVOUT ≈ –55mV per mA load step. |
| Quiescent Current | 175μA max (25°C) - Allows always-on biasing in low-power wake-up circuits without significant standby drain. |
Pinout & Package
ICL7660AMJA/883B is housed in an 8-pin CERDIP (Ceramic Dual In-line Package) with hermetic seal, rated for military temperature range (-55°C to +125°C) and MIL-STD-883B compliance. The package includes internal bonding wires and glass-sealed leads for high-reliability aerospace and defense applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| N.C. | No Connection | Pin 1 is unconnected - must remain floating; not bonded internally and electrically isolated. |
| CAP+ | Bucket Capacitor Positive Terminal | Connects to positive side of charge-pump capacitor C1; forms first stage of charge transfer cycle. |
| GND | Analog Ground Reference | Substrate and reference node for all internal switches; reservoir capacitor C2 positive terminal ties here. |
| CAP- | Bucket Capacitor Negative Terminal | Connects to negative side of C1; polarity reversal during switching enables voltage inversion. |
| VOUT | Negative Output Terminal | Delivers inverted output (e.g., -5V); reservoir capacitor C2 negative terminal connects here. |
| LV | Low-Voltage Enable Control | Must be left open for V+ > 5V; grounding below 3.5V improves startup but increases quiescent current. |
| OSC | Oscillator Timing Input | Accepts external capacitor to reduce frequency; stray capacitance must be minimized to avoid drift. |
| V+ | Positive Supply Input | 1.5–10V input; also serves as substrate connection - requires low-impedance bypass (0.1µF). |
Key Features
| Feature | Design Value |
|---|---|
| Voltage Inversion | Generates regulated-negative rail from single positive supply - eliminates need for dual-output transformers or second regulators. |
| No External Diode Required | Reduces BOM count and PCB area; avoids forward-voltage drop and thermal derating issues of discrete diodes. |
| MIL-STD-883B Qualified | Validated for shock, vibration, temperature cycling, and hermeticity - suitable for flight-critical and ground-mobile systems. |
| Wide Temperature Operation | Guaranteed functionality from -55°C to +125°C - enables deployment in engine bays, avionics bays, and space-qualified payloads. |
| Low Quiescent Current | 175μA max enables always-on biasing in battery-backed monitoring circuits without compromising runtime. |
Applications
| EIA/TIA-232E Power Supply | Op-Amp Dual-Supply Generation |
|---|---|
Use Scenario: Providing ±5V rails for RS-232 line drivers/receivers in industrial PLC backplanes and military comms terminals. IC Role / Device Role / Timing Role: Inverting +5V logic supply to generate compliant -5V to -15V transmit-level voltage per EIA/TIA-232E spec. Use Value: Eliminates need for isolated DC/DC converters; maintains signal integrity with <10mVp-p ripple at 10mA load. | Use Scenario: Biasing precision rail-to-rail op-amps in handheld test equipment and panel meters requiring symmetric analog supplies. IC Role / Device Role / Timing Role: Generating clean, low-noise -5V from main +5V system rail to enable bipolar input/output swing. Use Value: Achieves 98% efficiency and <0.5V dropout ensures ≥4.5V headroom for 12-bit ADC drivers under dynamic load. |
| Portable Telephony Audio Bias | Data Acquisition Signal Conditioning |
Use Scenario: Supplying negative bias to electret microphone preamplifiers and audio codec analog sections in ruggedized field radios. IC Role / Device Role / Timing Role: Delivering stable -3V to -5V from single-cell lithium supply (3.0–4.2V) using LV pin control. Use Value: Supports 1.5V minimum start-up and operates down to -55°C - critical for arctic-deployed voice comms gear. | Use Scenario: Powering low-drift instrumentation amplifiers and anti-aliasing filters in 16-bit data loggers exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Providing isolated negative rail for sensor front-end stages to reject common-mode noise in noisy industrial environments. Use Value: Hermetic CERDIP package prevents moisture-induced parameter shift; output resistance remains stable across -55°C to +125°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1044MJA | Includes BOOST pin (raises oscillator to ~60kHz); higher quiescent current (200μA max); same CERDIP-8 package and -55°C to +125°C rating. | Better ripple/noise performance and lower output impedance, but increased supply current reduces battery life in always-on systems. | Select MAX1044MJA when lower output impedance (<15Ω) and reduced EMI are prioritized over ultra-low quiescent current. |
| ICL7660AMTV/883B | TO-99 metal-can package instead of CERDIP; identical electrical specs and temperature range; superior thermal dissipation but larger footprint and manual assembly requirement. | Suitable for high-reliability analog modules where thermal management outweighs board-space constraints, e.g., radar receiver front-ends. | Choose ICL7660AMTV/883B when thermal performance or legacy TO-99 socket compatibility is required over surface-mount scalability. |
Compared with ICL7660AMJA/883B, MAX1044MJA offers higher-frequency operation for lower ripple but trades off quiescent current, while ICL7660AMTV/883B provides identical electrical behavior in a thermally superior TO-99 can - making both viable alternatives depending on mechanical and thermal design priorities.
Availability
ICL7660AMJA/883B is available at Aetrix Electronics and suitable for EIA/TIA-232E power supplies, op-amp dual-rail generation, and portable telephony audio biasing requiring stable component supply across extended temperature and long-lifecycle programs.
Supply support for ICL7660AMJA/883B 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) designs precision analog, mixed-signal, and power-management ICs for high-reliability industrial, automotive, and aerospace systems.
The ICL7660 product line delivers compact, low-cost switched-capacitor voltage conversion for space-constrained analog subsystems requiring bipolar supplies without inductors or transformers.
FAQ
What is the maximum output current capability of the ICL7660AMJA/883B?
The ICL7660AMJA/883B delivers up to 10mA continuous output current with ≤0.5V drop when supplied from +5V. At higher input voltages (e.g., +10V), output current remains limited by internal switch RDS(on) and thermal constraints - sustained 10mA operation is validated across -55°C to +125°C per MIL-STD-883B testing. Exceeding this degrades regulation and efficiency.
Does the ICL7660AMJA/883B require an external diode for operation?
No, the ICL7660AMJA/883B does not require an external diode. Its integrated CMOS switches and optimized charge-pump architecture enable full-spec operation from 1.5V to 10V across the entire -55°C to +125°C temperature range without external diodes - a key differentiator from legacy ICL7660 variants that needed series diodes for higher-voltage reliability.
How is the oscillator frequency set on the ICL7660AMJA/883B?
The ICL7660AMJA/883B uses an internal oscillator with a typical frequency of 10kHz at +5V and 25°C. Unlike the MAX1044, it has no BOOST pin; frequency is adjusted only via external capacitor on the OSC pin (pin 7) or by driving OSC with an external clock up to 400kHz. Stray capacitance on OSC must be minimized to maintain accuracy.
What is the function of the LV pin on the ICL7660AMJA/883B?
The LV (Low-Voltage) pin on the ICL7660AMJA/883B must be left open when V+ exceeds 5V per datasheet specification. Connecting LV to GND enables operation down to 1.5V but increases quiescent current - a trade-off validated for low-voltage compatibility with LTC1044 and legacy ICL7660 designs. Misuse risks reduced efficiency or startup failure.
Is the ICL7660AMJA/883B pin-compatible with the MAX1044 series?
The ICL7660AMJA/883B is pin-compatible with the MAX1044 in the 8-pin DIP/SO/CERDIP/TO-99 footprints, but pin 1 is N.C. on ICL7660AMJA/883B versus BOOST on MAX1044. This means direct replacement is electrically safe but forfeits BOOST functionality; layout reuse is possible, though unused BOOST trace should be isolated to prevent coupling.
ICL7660AMJA/883B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Ratiometric
- Output Configuration:
- Positive or Negative
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.5V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- -Vin, nVin, Vin/2
- Voltage - Output (Max):
- -
- Current - Output:
- 20mA
- Frequency - Switching:
- 10kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-CERDIP
ICL7660AMJA/883B FAQ
1.How can I place an order for ICL7660AMJA/883B through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660AMJA/883B 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 ICL7660AMJA/883B reliable?
The price and inventory of ICL7660AMJA/883B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660AMJA/883B is usually 5 days.
3.What payment methods are accepted for ICL7660AMJA/883B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660AMJA/883B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660AMJA/883B?
ICL7660AMJA/883B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660AMJA/883B 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 ICL7660AMJA/883B?
For technical support, including ICL7660AMJA/883B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660AMJA/883B requirements.
6.How does Aetrix verify that ICL7660AMJA/883B is sourced from the original manufacturer or authorized distributors?
All ICL7660AMJA/883B 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 ICL7660AMJA/883B meets industry standards.
7.What is the process for return or replacement of ICL7660AMJA/883B?
All ICL7660AMJA/883B units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660AMJA/883B, 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 ICL7660AMJA/883B part is unused and in its original packaging.
Return procedure for ICL7660AMJA/883B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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