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Renesas ICL7660SCBA
- Part No.:
- ICL7660SCBA
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7660SCBA.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
ICL7660SCBA from Intersil (now Renesas) is a monolithic CMOS charge-pump voltage converter IC that performs positive-to-negative voltage conversion across 1.5V–12V input, delivering complementary -1.5V to -12V output with only two external capacitors. It features a 10kHz nominal oscillator frequency, BOOST pin for frequency scaling up to ~35kHz, and 96% minimum power efficiency at 5V/5kΩ load - used in RS-232 power supplies and ±5V logic splitting.
For engineers reviewing the ICL7660SCBA datasheet, ICL7660SCBA pinout, ICL7660SCBA application, or ICL7660SCBA equivalent, this page delivers verified commercial-grade specifications, SOIC-8 package mapping, confirmed pin functions, and validated alternatives for legacy design continuity and supply chain migration.
Technical Context
The ICL7660SCBA integrates an internal RC oscillator, voltage level translator, series DC regulator, and four MOS power switches (one P-channel, three N-channel) to implement a switched-capacitor negative voltage converter. Its substrate bias logic network actively senses VOUT to dynamically adjust switch substrates and prevent latchup under start-up or short-circuit conditions.
Operation supports multiple topologies: standalone inverting converter (VOUT ≈ –VIN), voltage doubler (VOUT ≈ +2VIN), cascaded multiplication, and supply splitting. The LV pin enables low-voltage optimization (1.5V–3.5V) by bypassing the internal regulator; above 3.5V, LV must float to maintain latchup immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 12V input; supports direct +5V-to-±5V generation without external regulators |
| Oscillator Frequency | 10kHz nominal (free-running at 5V); scalable to ~35kHz via BOOST pin; adjustable with external capacitor on OSC pin |
| Output Source Resistance | 60Ω typical at 20mA/5V; increases to 120Ω max over 0°C–70°C commercial range |
| Power Efficiency | ≥96% min at RL = 5kΩ; ensures minimal thermal rise and high energy reuse in battery-sensitive systems |
| Voltage Conversion Efficiency | ≥99% min open-circuit; maintains near-ideal charge transfer with negligible quiescent loss |
| Supply Current | 80µA typical at 5V/25°C; ≤180µA max over full 0°C–70°C operating range |
| Package | 8-lead SOIC (M8.15); RoHS-compliant Pb-free option available as ICL7660SCBAZ |
Pinout & Package
ICL7660SCBA is housed in an 8-lead SOIC package (JEDEC MS-012, package drawing M8.15), with 1.27mm lead pitch and standard surface-mount footprint compatible with automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator frequency control input | Connecting to V+ raises oscillator frequency ~3.5×, reducing output impedance and enabling smaller external capacitors |
| 2 (CAP+) | Charge pump capacitor connection | Anode of primary pump capacitor (C1); alternately charged/discharged to transfer energy to CAP- |
| 3 (GND) | Ground reference | System ground return; also serves as cathode reference for C2 in inverting configuration |
| 4 (CAP-) | Charge reservoir capacitor connection | Cathode of reservoir capacitor (C2); stores inverted output voltage; Schottky diode may be added VOUT→CAP- for latchup prevention above 5.5V |
| 5 (VOUT) | Negative output terminal | Delivers regulated negative voltage; must not exceed GND potential to avoid latchup |
| 6 (OSC) | Oscillator timing node | Accepts external capacitor to lower frequency or external clock (via 1kΩ series resistor) to override internal oscillator |
| 7 (LV) | Low-voltage mode enable | Tie to GND for 1.5V–3.5V operation (bypasses internal regulator); leave floating for 3.5V–12V to prevent latchup |
| 8 (V+) | Positive supply input | Primary power input; supplies internal regulator, oscillator, and switch drivers; max rating +13V absolute |
Key Features
| Feature | Design Value |
|---|---|
| BOOST pin functionality | Enables 3.5× oscillator frequency increase without external clock, lowering output impedance by ~3× and permitting 0.1µF capacitors instead of 10µF |
| LV pin selectable regulation | Allows dual-mode operation: regulator-bypassed for 1.5V–3.5V (low-VIN), or regulated for 3.5V–12V (latchup-safe) |
| Guaranteed 96% power efficiency | Validated across full 0°C–70°C commercial temperature range at 5V/5kΩ, ensuring stable performance in uncontrolled environments |
| 100% tested at 3V | Ensures functional reliability at lowest specified supply voltage, critical for brown-out resilience in portable designs |
| SCR latchup protection | Integrated substrate bias logic prevents destructive latchup during start-up, output short, or transient overvoltage events |
Applications
| RS-232 Power Supply | ±5V Logic Splitting |
|---|---|
Use Scenario: Generating compliant ±12V or ±5V from a single +5V microcontroller rail for legacy RS-232 transceivers (e.g., MAX232 replacement). IC Role / Device Role / Timing Role: Primary inverting voltage converter; provides isolated negative rail with no inductor or transformer. Use Value: Eliminates need for discrete charge-pump ICs or dual-output DC-DC modules, reducing BOM count and PCB area by >40%. | Use Scenario: Converting a +5V USB or MCU supply into symmetrical ±5V rails for op-amp signal conditioning or analog front-ends. IC Role / Device Role / Timing Role: Dual-role converter: inverts +5V to –5V while preserving +5V as positive rail. Use Value: Achieves rail symmetry within ±2% error at 10mA load, enabling precision bipolar analog circuits without external regulators. |
| Voltage Multiplication | Data Acquisition Negative Bias |
Use Scenario: Doubling +5V to +10V for sensor excitation or DAC reference in portable test equipment. IC Role / Device Role / Timing Role: Configured as voltage doubler using external diodes; leverages internal switches and oscillator. Use Value: Delivers ≥9.2V at 10mA with <60Ω source impedance - sufficient for 12-bit SAR ADC references without post-regulation. | Use Scenario: Providing clean –5V bias for instrumentation amplifiers and multiplexed ADC inputs in industrial data loggers. IC Role / Device Role / Timing Role: Low-noise negative supply generator; operates with 10µF electrolytic capacitors and no magnetic components. Use Value: Maintains <5mVpp ripple at 10kHz switching frequency, preventing aliasing in 100ksps sampling systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICL7660SCBAZ | Pb-free SOIC-8 variant; identical electrical specs and pinout; same 0°C to +70°C temp range | Drop-in replacement for new designs requiring RoHS compliance; no layout or firmware changes needed | Select when initiating new production or updating legacy boards to meet environmental regulations |
| ICL7660ACBAZ-T | ICL7660A variant: lower 26µA typical supply current at 3V; reduced oscillator frequency (8kHz typ at 3V) vs. ICL7660S | Better suited for ultra-low-power 3V systems; slightly higher output resistance at light loads | Prefer for battery-powered sensors where quiescent current dominates lifetime calculation |
Compared with ICL7660SCBA, ICL7660SCBAZ offers identical performance with Pb-free termination for regulatory compliance, while ICL7660ACBAZ-T trades minor oscillator speed reduction for significantly lower 3V supply current - making it optimal for energy-constrained 3V applications but less ideal for 5V–12V systems demanding maximum switching efficiency.
Availability
ICL7660SCBA is available at Aetrix Electronics and suitable for RS-232 power supplies, ±5V logic splitting, and data acquisition negative biasing requiring stable component supply and long-term obsolescence management.
Supply support for ICL7660SCBA 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
Renesas Electronics (formerly Intersil) is a global semiconductor leader specializing in analog, mixed-signal, and power management ICs for industrial, automotive, and communications infrastructure.
The ICL7660S/ICL7660A product line was designed specifically for low-noise, inductorless DC-DC voltage conversion in space- and cost-constrained applications - emphasizing reliability, latchup immunity, and seamless drop-in replacement for legacy ICL7660 designs.
FAQ
What is the operating temperature range for the ICL7660SCBA?
The ICL7660SCBA is rated for the commercial temperature range of 0°C to +70°C, as confirmed in the Ordering Information table (Page 2) and Absolute Maximum Ratings section (Page 3) of FN3179 Rev 7.01. This range applies to all electrical specifications unless otherwise noted, and the device is 100% tested at 3V within this span.
Can the ICL7660SCBA generate voltages higher than -12V?
No - the ICL7660SCBA is specified for input voltages from 1.5V to 12V, producing complementary outputs from -1.5V to -12V in inverting mode. While cascading multiple ICL7660SCBA units can theoretically extend the negative range, the datasheet limits practical cascading to 10 devices for light loads due to cumulative efficiency loss, and no single ICL7660SCBA unit exceeds -12V output.
Is the ICL7660SCBA pin-compatible with the original ICL7660?
Yes - the ICL7660SCBA is explicitly documented as a direct replacement for the industry-standard ICL7660, with identical 8-pin SOIC pinout, function mapping, and external component requirements. Key improvements (extended voltage range, lower supply current, BOOST pin) are fully backward-compatible and require no PCB changes.
What external components are required for basic ICL7660SCBA operation?
The ICL7660SCBA requires only two external non-critical passive components: a 10µF polarized electrolytic capacitor between CAP+ (pin 2) and GND (pin 3), and another 10µF polarized capacitor between CAP- (pin 4) and GND (pin 3). No inductors, transformers, or precision resistors are needed for standard inverting operation.
Does the ICL7660SCBA require an external Schottky diode?
An external Schottky diode from VOUT (pin 5) to CAP- (pin 4) is recommended only when the input voltage exceeds 5.5V and has a fast rise time (>2V/µs), per the "Do's and Don'ts" section (Page 8) of FN3179 Rev 7.01. For ≤5.5V operation or slower-rising supplies, the ICL7660SCBA operates reliably without any external diode.
ICL7660SCBA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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):
- 12V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 45mA
- Frequency - Switching:
- 10kHz ~ 35kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7660SCBA FAQ
1.How can I place an order for ICL7660SCBA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660SCBA 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 ICL7660SCBA reliable?
The price and inventory of ICL7660SCBA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660SCBA is usually 5 days.
3.What payment methods are accepted for ICL7660SCBA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660SCBA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660SCBA?
ICL7660SCBA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660SCBA 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 ICL7660SCBA?
For technical support, including ICL7660SCBA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660SCBA requirements.
6.How does Aetrix verify that ICL7660SCBA is sourced from the original manufacturer or authorized distributors?
All ICL7660SCBA 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 ICL7660SCBA meets industry standards.
7.What is the process for return or replacement of ICL7660SCBA?
All ICL7660SCBA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660SCBA, 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 ICL7660SCBA part is unused and in its original packaging.
Return procedure for ICL7660SCBA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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