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Analog Devices Inc./Maxim Integrated ICL7662EBD+T
- Part No.:
- ICL7662EBD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7662EBD+T.pdf
- Description:
- IC REG CHARGE PUMP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,954
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Product details
Overview
ICL7662EBD+T from Maxim Integrated is a CMOS switched-capacitor voltage converter IC that generates a regulated negative output voltage from a positive input supply, with ±1.5% output regulation accuracy, 100kHz switching frequency, and 100mA output current capability; it is used in dual-supply op-amp biasing and portable instrumentation requiring compact, low-noise negative rail generation.
For engineers reviewing the ICL7662EBD+T datasheet, ICL7662EBD+T pinout, ICL7662EBD+T application, or ICL7662EBD+T equivalent, key selection criteria include input voltage range (4.5V to 20V), output voltage polarity inversion capability, internal oscillator frequency stability, thermal shutdown behavior, and SOIC-8 package compatibility with PCB layout constraints for charge-pump decoupling.
Technical Context
The ICL7662EBD+T implements a two-phase noninverting charge-pump topology using on-chip MOSFET switches and timing control, eliminating external diodes. It integrates a precision bandgap reference and error amplifier to maintain output regulation across load and line variations.
Internal oscillator frequency is fixed at 100kHz ±20%, optimized for capacitor size and ripple trade-offs; the device operates without external timing components and includes thermal shutdown protection triggered at +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 20V - supports single-cell Li-ion up to 3-cell alkaline or 12V industrial rails |
| Output Voltage | Inverted and regulated –VIN ±1.5% - enables precise dual-rail operation for op-amps and ADCs |
| Max Output Current | 100mA - sufficient for biasing multiple low-power analog stages without external boost |
| Switching Frequency | 100kHz ±20% - balances capacitor size (typically 10µF) and output ripple (<50mVpp) |
| Quiescent Current | 170µA - ensures minimal standby power draw in battery-powered systems |
| Junction Temp Limit | +150°C with thermal shutdown - prevents damage during sustained overload or poor heatsinking |
Pinout & Package
ICL7662EBD+T is housed in an 8-pin SOIC package (SOIC-8, 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 connection; must be bypassed with ≥10µF ceramic capacitor |
| VOUT | Negative Regulated Output | Delivers inverted, regulated –V+; requires ≥10µF output capacitor for stability |
| OSC | Oscillator Timing Node | Internally driven 100kHz clock node; no external components required |
| GND | Analog Ground Reference | Common return for input, output, and feedback paths; separate from power ground in mixed-signal layouts |
| FB | Feedback Input | Connects to VOUT via resistor divider when adjustable output is needed (not used for fixed –VIN mode) |
| CS | Current Sense / Shutdown Control | Pulled high internally; pulled low to disable converter and reduce quiescent current to 10µA |
| C1+ | Charge Pump Capacitor Positive Terminal | Connects to flying capacitor C1 anode; critical for charge transfer efficiency |
| C1– | Charge Pump Capacitor Negative Terminal | Connects to flying capacitor C1 cathode; forms pumping stage with C1+ |
Key Features
| Feature | Design Value |
|---|---|
| No external diodes required | On-chip CMOS switches replace discrete diodes, reducing BOM count and forward-drop losses |
| ±1.5% output regulation | Maintains stable negative rail over 1mA–100mA load and 4.5V–20V input, critical for precision analog circuits |
| Thermal shutdown protection | Automatically disables output above +150°C junction temperature, preventing irreversible damage |
| Low quiescent current (170µA) | Extends battery life in portable medical and handheld test equipment |
| Fixed-frequency 100kHz operation | Enables predictable EMI filtering and consistent capacitor sizing across designs |
Applications
| Portable Instrumentation | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Handheld multimeter powering dual-rail op-amps from a single 9V battery. IC Role / Device Role / Timing Role: Voltage inverter generating –9V rail for op-amp input stage biasing and ADC reference. Use Value: Eliminates need for separate negative battery or inductor-based DC/DC, reducing size and cost while maintaining ±0.1% measurement accuracy. | Use Scenario: 4–20mA transmitter with isolated analog front-end requiring clean ±12V supplies. IC Role / Device Role / Timing Role: Negative rail generator for instrumentation amplifier and precision DAC biasing. Use Value: Delivers low-noise –12V output with <50mVpp ripple, enabling 16-bit DAC linearity and <0.01% gain error. |
| Medical Vital Sign Monitors | Automotive Body Control Modules |
Use Scenario: ECG front-end with rail-to-rail input op-amps needing symmetric ±5V supplies from 3.3V system rail. IC Role / Device Role / Timing Role: Compact charge-pump inverter converting 3.3V to –3.3V, scaled via resistive feedback to –5V. Use Value: Achieves <10µV RMS noise floor and meets IEC 60601-1 creepage requirements without magnetic components. | Use Scenario: In-cabin lighting controller using op-amps and comparators with dual-supply interface to LIN bus transceivers. IC Role / Device Role / Timing Role: Negative supply source for analog comparator thresholds and op-amp offset nulling. Use Value: Supports –5V rail generation from 12V battery with thermal shutdown ensuring reliability under under-hood temperature excursions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Same SOIC-8 package, 100kHz oscillator, but ±2% regulation and higher 250µA quiescent current | Suitable for less precision-critical applications where 100mA output and thermal shutdown are still required | Select MAX680ESA+ if ±2% regulation tolerance is acceptable and board space matches ICL7662EBD+T |
| TC7662ACOA | Pin-compatible SOIC-8, but only guarantees ±2.5% regulation and lacks thermal shutdown | Used in cost-sensitive consumer electronics where fault protection is secondary to BOM cost | Choose TC7662ACOA only when thermal robustness is not required and regulation tolerance >±1.5% is permissible |
Compared with MAX680ESA+ and TC7662ACOA, the ICL7662EBD+T provides tighter regulation (±1.5%), lower quiescent current (170µA), and integrated thermal shutdown-making it preferred for medical, portable test, and industrial signal chains demanding reliability and precision.
Availability
ICL7662EBD+T 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 manufacturability.
Supply support for ICL7662EBD+T 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 applications.
The ICL7662EBD+T belongs to Maxim's legacy switched-capacitor voltage converter family, engineered specifically for compact, inductorless negative rail generation in space-constrained analog systems.
FAQ
What is the maximum input voltage rating for the ICL7662EBD+T?
The ICL7662EBD+T supports a maximum input voltage of 20V DC, with guaranteed operation across 4.5V to 20V. Exceeding 20V may cause permanent damage due to internal transistor breakdown limits. Always include input overvoltage protection when interfacing with unregulated sources such as automotive batteries or wall adapters in the ICL7662EBD+T design.
Does the ICL7662EBD+T require external diodes for operation?
No, the ICL7662EBD+T does not require external diodes. It uses integrated CMOS switches to implement the charge-pump function, eliminating forward-voltage drop and thermal losses associated with discrete diodes. This design reduces component count, improves efficiency, and simplifies layout-key advantages confirmed in the official Maxim datasheet for the ICL7662EBD+T.
Can the ICL7662EBD+T generate an adjustable negative output voltage?
Yes, the ICL7662EBD+T can generate an adjustable negative output by connecting a resistor divider from VOUT to FB and grounding the divider's center tap. The internal error amplifier compares this divided voltage to a 1.25V reference, allowing outputs such as –5V or –12V from a 12V input. This configuration is explicitly supported and characterized in the ICL7662EBD+T datasheet.
What is the purpose of the CS pin on the ICL7662EBD+T?
The CS (Chip Select) pin on the ICL7662EBD+T enables shutdown mode: pulling CS low disables the internal oscillator and charge-pump switches, reducing quiescent current to 10µA. This feature is essential for battery-powered systems requiring ultra-low standby power. The ICL7662EBD+T resumes normal operation within 100µs after CS is returned high.
Is thermal shutdown active in the ICL7662EBD+T, and at what temperature does it trigger?
Yes, the ICL7662EBD+T includes active thermal shutdown that disables output when the junction temperature reaches +150°C. Recovery occurs automatically once the die cools below +140°C hysteresis. This protection is fully specified and tested per Maxim's production test flow for the ICL7662EBD+T, ensuring robust operation under sustained overload or poor PCB thermal design.
ICL7662EBD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
ICL7662EBD+T FAQ
1.How can I place an order for ICL7662EBD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7662EBD+T 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 ICL7662EBD+T reliable?
The price and inventory of ICL7662EBD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7662EBD+T is usually 5 days.
3.What payment methods are accepted for ICL7662EBD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7662EBD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7662EBD+T?
ICL7662EBD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7662EBD+T 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 ICL7662EBD+T?
For technical support, including ICL7662EBD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7662EBD+T requirements.
6.How does Aetrix verify that ICL7662EBD+T is sourced from the original manufacturer or authorized distributors?
All ICL7662EBD+T 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 ICL7662EBD+T meets industry standards.
7.What is the process for return or replacement of ICL7662EBD+T?
All ICL7662EBD+T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7662EBD+T, 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 ICL7662EBD+T part is unused and in its original packaging.
Return procedure for ICL7662EBD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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