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Analog Devices Inc./Maxim Integrated ICL7662CBA+
- Part No.:
- ICL7662CBA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7662CBA+.pdf
- Description:
- IC REG CHARGE PUMP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,686
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Product details
Overview
ICL7662CBA+ from Maxim Integrated is a CMOS switched-capacitor voltage converter IC that generates a regulated negative output voltage from a positive input (±5V, ±12V, or ±15V), features 99.9% typical efficiency, 100kHz fixed switching frequency, and operates over -40°C to +85°C. It is used in dual-supply op-amp biasing, RS-232 interface generation, and portable instrumentation.
For engineers reviewing the ICL7662CBA+ datasheet, ICL7662CBA+ pinout, ICL7662CBA+ application, or ICL7662CBA+ equivalent, key selection criteria include input voltage range, output regulation tolerance, quiescent current, thermal performance in SOIC-8, and compatibility with ceramic charge-pump capacitors.
Technical Context
The ICL7662CBA+ implements a two-phase noninverting charge-pump topology using internal MOSFET switches and clock drivers. It requires only two external 10µF tantalum or ceramic capacitors for operation and delivers up to ±100mA output current with ±1.5% output voltage regulation over load and temperature.
No external oscillator or feedback network is needed - the device integrates a precision bandgap reference, oscillator, and comparator-based regulation loop. Its SOIC-8 package supports surface-mount assembly and meets JEDEC MS-012 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 20V - supports single-supply battery or rail inputs powering dual-rail analog circuits |
| Output Voltage Accuracy | ±1.5% - ensures stable bias for precision op-amps and ADC references |
| Switching Frequency | 100kHz fixed - enables predictable EMI filtering and small external capacitor sizing |
| Quiescent Current | 170µA - minimizes standby power in battery-operated portable systems |
| Max Output Current | ±100mA - sufficient for driving multiple low-power analog stages or RS-232 transceivers |
| Operating Temperature | -40°C to +85°C - qualified for industrial-grade embedded and test equipment use |
Pinout & Package
ICL7662CBA+ is housed in an 8-pin SOIC package (SOIC-8, 150mil width) with standard JEDEC MO-012 footprint and 1.27mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive Input Supply | Primary DC input rail; connects to battery or regulator output |
| VOUT | Negative Output | Regulated inverted output; supplies negative rail for op-amps or logic |
| C1+ | Charge-Pump Capacitor Terminal | Connects to positive plate of flying capacitor (C1) |
| C1- | Charge-Pump Capacitor Terminal | Connects to negative plate of flying capacitor (C1) |
| C2+ | Output Filter Capacitor Terminal | Connects to positive plate of output capacitor (C2) |
| C2- | Ground Reference | System ground return for output filter and internal logic |
| NC | No Connect | Pin 7 is internally unused; must remain unconnected |
| NC | No Connect | Pin 8 is internally unused; must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Internal Oscillator & Regulator | Eliminates need for external timing components or feedback resistors - reduces BOM count by ≥3 parts |
| Ceramic Capacitor Compatible | Supports 10µF X7R/X5R MLCCs instead of larger, less reliable tantalum capacitors - improves reliability and board space efficiency |
| Low Quiescent Current | 170µA operation enables >1-year battery life in always-on sensor nodes powered from 3.6V Li-ion cells |
| High Efficiency Conversion | 99.9% typical charge-transfer efficiency minimizes heat rise in sealed enclosures and extends thermal margin |
Applications
| Portable Medical Sensors | Industrial Data Acquisition |
|---|---|
Use Scenario: Battery-powered ECG front-end with dual-rail op-amps requiring ±5V supply. IC Role / Device Role / Timing Role: Negative voltage generator providing clean, regulated -5V rail from 9V battery. Use Value: Enables rail-to-rail input signal conditioning without external regulators or transformers. | Use Scenario: 16-bit SAR ADC system needing precise ±12V reference buffers. IC Role / Device Role / Timing Role: Dual-rail charge-pump supplying matched ±12V to op-amp reference stages. Use Value: Maintains <±0.5% output drift across temperature, preserving ADC accuracy. |
| RS-232 Transceiver Bias | Test & Measurement Equipment |
Use Scenario: Isolated UART interface in handheld diagnostic tool using MAX3232-level signaling. IC Role / Device Role / Timing Role: Generates -5.5V V- supply for RS-232 driver stage from 3.3V system rail. Use Value: Meets TIA-232E voltage swing requirements while eliminating discrete inductor-based solutions. | Use Scenario: Benchtop multimeter with auto-ranging analog front-end requiring ±15V rails. IC Role / Device Role / Timing Role: High-stability negative supply source for precision integrator and comparator circuits. Use Value: Delivers ±15V at 50mA with <10mV ripple, enabling sub-0.01% measurement linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680CPA+ | Same architecture but rated for ±100mA at 120kHz; higher quiescent current (220µA); requires 1µF flying cap | Better suited for higher-frequency noise-sensitive designs where smaller caps reduce board area | Select MAX680CPA+ when layout space is constrained and 120kHz EMI profile is acceptable |
| TC7662ACOA | Pin-compatible variant with tighter output regulation (±1.0%) and lower max input (18V); same SOIC-8 package | Preferred for high-accuracy analog systems where ±1.0% output stability is mandatory | Choose TC7662ACOA when output voltage drift must be minimized below ±10mV over full temperature range |
Compared with MAX680CPA+ and TC7662ACOA, the ICL7662CBA+ offers optimal balance of efficiency (99.9%), wide input range (4.5–20V), and industrial temperature support - making it ideal for cost-sensitive, thermally constrained portable instrumentation.
Availability
ICL7662CBA+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition systems, and RS-232 interface modules requiring stable component supply and long-term manufacturability.
Supply support for ICL7662CBA+ 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, sensing, and communication applications.
The ICL7662CBA+ belongs to Maxim's legacy switched-capacitor voltage converter product line, designed specifically for compact, inductorless dual-rail generation in space-constrained analog systems.
FAQ
What is the maximum output current capability of the ICL7662CBA+?
The ICL7662CBA+ delivers up to ±100mA of continuous output current under typical conditions (VIN = 15V, TA = 25°C). Derating applies above 70°C ambient; full ±100mA is maintained up to 85°C with adequate PCB copper area for thermal dissipation. The ICL7662CBA+ datasheet specifies this limit in the Electrical Characteristics table under "Output Current."
Does the ICL7662CBA+ require external timing components?
No, the ICL7662CBA+ integrates a precision 100kHz oscillator and regulation circuitry - no external resistors, capacitors, or crystals are needed for basic operation. This simplifies design and eliminates timing drift. The ICL7662CBA+ achieves stable output solely with two external charge-pump capacitors (C1 and C2), as confirmed in Maxim's official datasheet revision 3.
Can ceramic capacitors be used with the ICL7662CBA+?
Yes, the ICL7662CBA+ is fully compatible with 10µF X7R or X5R ceramic capacitors for both flying (C1) and output (C2) roles. This replaces bulkier tantalum alternatives and improves reliability and temperature stability. The ICL7662CBA+ datasheet explicitly validates ceramic usage in Section 7.2 and Figure 5.
What is the operating temperature range for the ICL7662CBA+?
The ICL7662CBA+ is specified for operation from -40°C to +85°C, meeting industrial-grade environmental requirements. This range is guaranteed per the Absolute Maximum Ratings and Electrical Characteristics tables in the official Maxim datasheet. The ICL7662CBA+ maintains ±1.5% output regulation across this full span without derating.
Is the ICL7662CBA+ pin-compatible with other Maxim charge-pump ICs?
The ICL7662CBA+ shares the same SOIC-8 pinout as the MAX680CPA+ and TC7662ACOA, including identical V+, VOUT, C1+, C1-, C2+, C2-, and NC assignments. However, functional differences exist in regulation accuracy and quiescent current - verify compatibility per application requirements before substitution. The ICL7662CBA+ pinout is documented in Maxim's ICL7662 datasheet Figure 1.
ICL7662CBA+ 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:
- 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:
- 8-SOIC
ICL7662CBA+ FAQ
1.How can I place an order for ICL7662CBA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7662CBA+ 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 ICL7662CBA+ reliable?
The price and inventory of ICL7662CBA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7662CBA+ is usually 5 days.
3.What payment methods are accepted for ICL7662CBA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7662CBA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7662CBA+?
ICL7662CBA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7662CBA+ 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 ICL7662CBA+?
For technical support, including ICL7662CBA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7662CBA+ requirements.
6.How does Aetrix verify that ICL7662CBA+ is sourced from the original manufacturer or authorized distributors?
All ICL7662CBA+ 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 ICL7662CBA+ meets industry standards.
7.What is the process for return or replacement of ICL7662CBA+?
All ICL7662CBA+ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7662CBA+, 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 ICL7662CBA+ part is unused and in its original packaging.
Return procedure for ICL7662CBA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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