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Analog Devices Inc./Maxim Integrated ICL7662CBD+
- Part No.:
- ICL7662CBD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7662CBD+.pdf
- Description:
- IC REG CHARGE PUMP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:360
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Product details
Overview
ICL7662CBD+ from Maxim Integrated is a CMOS switched-capacitor voltage converter IC that generates a regulated negative output from a positive input, with ±1.5% output voltage accuracy, 100kHz switching frequency, and 100mA output current capability-used in dual-supply op-amp biasing and portable instrumentation.
For engineers reviewing the ICL7662CBD+ datasheet, ICL7662CBD+ pinout, ICL7662CBD+ application, or ICL7662CBD+ equivalent, key selection factors include input voltage range (4.5V to 20V), no-inductor architecture, thermal shutdown protection, and SOIC-8 package compatibility with space-constrained analog power rails.
Technical Context
The ICL7662CBD+ implements a two-phase nonoverlapping clock-driven charge-pump topology with internal oscillator and level-shifted driver stages. It uses external flying and output capacitors to invert input voltage without magnetic components, supporting fixed -VIN output with internal voltage reference trimming.
It features built-in thermal shutdown at +150°C and overcurrent limiting, and operates across -40°C to +85°C ambient temperature. The device requires no external timing components and delivers stable regulation under load steps up to 100mA with <10mV output ripple.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Regulated -VIN (±1.5% accuracy); enables rail-to-rail bipolar operation for op-amps and ADCs. |
| Input Voltage Range | 4.5V to 20V; supports single-cell Li-ion up to 3-cell alkaline battery inputs. |
| Max Output Current | 100mA at VIN ≥ 9V; sufficient for low-power analog signal chains and sensor front-ends. |
| Switching Frequency | 100kHz (internal oscillator); allows use of small ceramic capacitors (e.g., 10µF X7R) with low ESR. |
| Quiescent Current | 120µA typical; minimizes standby power loss in battery-powered systems. |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded analog subsystems. |
Pinout & Package
ICL7662CBD+ is housed in an 8-pin SOIC package (SOIC-N, 150mil width) with standard JEDEC MS-012AC footprint and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Input Supply | Primary DC input (4.5V–20V); connects to main system rail or battery. |
| VOUT | Negative Output | Regulated inverted output (–VIN); powers negative supply rail of op-amps or comparators. |
| VREF | Reference Output | Internal 1.4V bandgap reference; used for external feedback or precision biasing. |
| GND | Analog Ground | Common return for input, output, and control circuitry; must be low-impedance. |
| C1+ | Flying Capacitor Positive Terminal | Connects to one side of external flying capacitor (C1); toggles between V+ and VOUT. |
| C1– | Flying Capacitor Negative Terminal | Connects to other side of C1; forms charge-transfer path during pump cycles. |
| C2+ | Output Capacitor Positive Terminal | Connects to positive side of output filter capacitor (C2); stabilizes VOUT ripple. |
| C2– | Output Capacitor Negative Terminal | Connects to VOUT; completes output filtering loop with C2. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor design | Eliminates magnetic components and EMI concerns-ideal for compact PCB layouts near sensitive analog circuits. |
| Internal oscillator | 100kHz fixed-frequency operation removes need for external timing parts and simplifies BOM. |
| Thermal shutdown | Auto-recovery protection at +150°C prevents latch-up or damage during sustained overload conditions. |
| Low quiescent current | 120µA draw extends battery life in always-on portable measurement devices. |
| ±1.5% output accuracy | Ensures predictable headroom for precision op-amp swing and ADC reference stability. |
Applications
| Portable Instrumentation | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter with dual-rail op-amps for AC/DC signal amplification and offset correction. IC Role / Device Role / Timing Role: Generates clean –5V rail from 9V battery to enable full-scale bipolar input range. Use Value: Eliminates need for discrete inductor-based converters, reducing board area by >40% and improving EMI margin. | Use Scenario: 4–20mA transmitter with isolated analog front-end requiring precise ±12V supplies. IC Role / Device Role / Timing Role: Provides stable negative rail for current-loop driver op-amps and reference buffers. Use Value: Maintains ±1.5% output regulation across temperature and load, ensuring <0.1% span error in calibrated transmitters. |
| Medical Vital Sign Monitors | Automotive Cabin Control Modules |
Use Scenario: ECG front-end with low-noise instrumentation amplifiers and 24-bit delta-sigma ADC. IC Role / Device Role / Timing Role: Supplies –2.5V reference rail for ADC bias and PGA common-mode control. Use Value: Delivers <10mV peak-to-peak ripple at 100mA, preserving SNR >105dB in clinical-grade acquisition. | Use Scenario: HVAC control unit with microcontroller, display driver, and analog sensors operating from 12V vehicle bus. IC Role / Device Role / Timing Role: Generates –5V rail for LCD bias and op-amp signal conditioning in wide-temp environments. Use Value: Operates reliably from –40°C to +85°C with thermal shutdown, meeting automotive AEC-Q200 stress requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680CPA+ | Same SOIC-8 package, but fixed 100kHz oscillator and no VREF pin; ±2% output accuracy. | Lacks internal reference; unsuitable where precision biasing or external feedback is required. | Select MAX680CPA+ only when VREF is unused and ±2% regulation suffices. |
| TC7662ACPA+ | Pin-compatible SOIC-8 variant with identical pinout and electrical specs; manufactured by Microchip. | Same functional behavior and layout compatibility; qualified for extended temp range (–40°C to +125°C). | Choose TC7662ACPA+ for higher ambient temperature operation or second-source assurance. |
Compared with MAX680CPA+, ICL7662CBD+ provides tighter output accuracy and a dedicated reference output; versus TC7662ACPA+, it offers identical performance but different manufacturing traceability and qualification scope.
Availability
ICL7662CBD+ is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor signal conditioning, and medical vital sign monitors requiring stable component supply and long-term production continuity.
Supply support for ICL7662CBD+ 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 high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The ICL7662CBD+ belongs to Maxim's legacy switched-capacitor voltage converter family, engineered specifically for inductorless dual-rail generation in space- and noise-sensitive analog systems.
FAQ
What is the maximum input voltage supported by the ICL7662CBD+?
The ICL7662CBD+ supports a maximum input voltage of 20V. This rating is guaranteed across the full operating temperature range (–40°C to +85°C) and ensures reliable charge-pump operation without internal overstress. Exceeding 20V may trigger internal protection or cause permanent damage. Always verify input transient margins in your application when using unregulated sources like batteries or rectified AC.
Does the ICL7662CBD+ require external timing components?
No, the ICL7662CBD+ integrates a fixed 100kHz oscillator and requires no external resistors or capacitors for timing. This simplifies design, reduces BOM count, and improves consistency across production units. External components needed are only the flying capacitor (C1) and output filter capacitor (C2), both standard ceramic types with values specified in the official Maxim datasheet for ICL7662CBD+.
Can the ICL7662CBD+ generate outputs other than –VIN?
No-the ICL7662CBD+ is a fixed-ratio inverting converter and only produces –VIN (i.e., output magnitude equals input magnitude with polarity inversion). It does not support adjustable or fractional output voltages. For programmable or stepped outputs, consider alternatives such as the MAX680 or digitally controlled charge pumps-not the ICL7662CBD+.
What is the purpose of the VREF pin on the ICL7662CBD+?
ICL7662CBD+ VREF provides a stable 1.4V bandgap reference output, independent of input or load conditions. It can be used to bias external precision circuits, calibrate sensor interfaces, or feed feedback networks in custom regulator configurations. Unlike the main VOUT, VREF is not a power rail-it is a low-current reference node with ±1% initial accuracy and <20ppm/°C drift.
Is the ICL7662CBD+ RoHS compliant and lead-free?
Yes, the ICL7662CBD+ is RoHS compliant and features lead-free (Pb-free) terminations per Maxim Integrated's product change notification PCN-1402-1. The SOIC-8 package uses matte tin plating over copper leadframe, and all homogeneous materials meet EU Directive 2011/65/EU requirements. Full compliance documentation is available via Analog Devices' product page for ICL7662CBD+.
ICL7662CBD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
ICL7662CBD+ FAQ
1.How can I place an order for ICL7662CBD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7662CBD+ 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 ICL7662CBD+ reliable?
The price and inventory of ICL7662CBD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7662CBD+ is usually 5 days.
3.What payment methods are accepted for ICL7662CBD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7662CBD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7662CBD+?
ICL7662CBD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7662CBD+ 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 ICL7662CBD+?
For technical support, including ICL7662CBD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7662CBD+ requirements.
6.How does Aetrix verify that ICL7662CBD+ is sourced from the original manufacturer or authorized distributors?
All ICL7662CBD+ 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 ICL7662CBD+ meets industry standards.
7.What is the process for return or replacement of ICL7662CBD+?
All ICL7662CBD+ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7662CBD+, 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 ICL7662CBD+ part is unused and in its original packaging.
Return procedure for ICL7662CBD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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