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Renesas ICL7660SIBA
- Part No.:
- ICL7660SIBA
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7660SIBA.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,054
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Product details
Overview
ICL7660SIBA from Intersil (now Renesas) is a monolithic CMOS charge-pump voltage converter IC that generates regulated negative output voltages from 1.5V to 12V positive inputs, delivering -1.5V to -12V outputs with only two external capacitors. It features a 10kHz nominal oscillator frequency, 96% minimum power efficiency, and operates across -40°C to +85°C for industrial-grade RS-232 and data acquisition power supplies.
For engineers reviewing the ICL7660SIBA datasheet, ICL7660SIBA pinout, ICL7660SIBA application, or ICL7660SIBA equivalent, this device serves as an enhanced drop-in replacement for legacy ICL7660 designs requiring extended supply range, lower quiescent current, and improved latchup immunity in compact SOIC-8 packaging.
Technical Context
The ICL7660SIBA integrates a DC regulator, RC oscillator, voltage level translator, and four MOS power switches (one P-channel, three N-channel) to implement a bidirectional charge-pump topology. Its internal substrate bias logic actively monitors VOUT to prevent latchup during startup and short-circuit conditions.
Operation supports multiple configurations: negative conversion (VOUT ≈ –VIN), voltage doubling (VOUT ≈ +2VIN), cascaded multiplication, and supply splitting. The BOOST pin (Pin 1) enables oscillator frequency scaling up to ~35kHz, reducing output impedance without larger capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 12V input; supports low-voltage operation down to 1.5V when LV pin tied to GND |
| Oscillator Frequency | 10kHz nominal at 5V (free-running); adjustable via BOOST pin or external capacitor on OSC pin |
| Output Source Resistance | 60Ω typical at 20mA load and 5V supply; degrades to ≤120Ω over full -40°C to +85°C range |
| Power Efficiency | ≥96% at 5kΩ load; maintains ≥95% across full industrial temperature range |
| Voltage Conversion Efficiency | ≥99% open-circuit; ensures minimal no-load voltage droop in precision instrumentation rails |
| Operating Temperature | -40°C to +85°C; qualified for industrial environments without derating |
| Package | 8-lead SOIC (M8.15); Pb-free, RoHS-compliant, moisture sensitivity level MSL3 |
Pinout & Package
ICL7660SIBA is housed in an 8-lead SOIC package (JEDEC MS-012, package drawing M8.15), with 1.27mm lead pitch, 5.0mm × 4.0mm body, and 1.75mm max height. Thermal resistance θJA = 160°C/W (typical).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BOOST | Oscillator frequency control input | Connect to V+ to raise oscillator frequency ~3.5×; reduces output impedance and ripple for space-constrained designs |
| 2 - CAP+ | Charge pump capacitor connection | Node where external pump capacitor C1 connects; polarity-sensitive for polarized electrolytics (+ to Pin 2) |
| 3 - GND | Ground reference | Primary return path for internal regulator, oscillator, and switch logic; must be low-impedance |
| 4 - CAP- | Charge reservoir capacitor connection | Node where reservoir capacitor C2 connects; polarity-sensitive (+ to GND) |
| 5 - VOUT | Negative output terminal | Delivers inverted voltage; must not exceed GND potential to avoid latchup; Schottky diode recommended above 5.5V input |
| 6 - OSC | Oscillator timing node | Accepts external capacitor to lower frequency or external clock (via 1kΩ series resistor) for precise synchronization |
| 7 - LV | Low-voltage mode enable | Tie to GND for 1.5–3.5V operation to bypass internal regulator; leave floating for 3.5–12V to prevent latchup |
| 8 - V+ | Positive input supply | Primary power input; accepts 1.5–12V; internal regulator drops ~0.3V when LV is floating |
Key Features
| Feature | Design Value |
|---|---|
| Extended supply voltage range | 1.5V to 12V operation-enables single-supply battery-powered systems (e.g., 2-cell alkaline) and high-voltage industrial rails |
| Boost pin for dynamic impedance control | Pin 1 raises oscillator frequency to ~35kHz, lowering effective output resistance by >40% without increasing capacitor size |
| Guaranteed 96% power efficiency | Validated across -40°C to +85°C-reduces thermal stress and improves system-level power budgeting in sealed enclosures |
| Enhanced SCR latchup protection | Active substrate bias network prevents destructive latchup during startup, short-circuit, or fast-rising input transients |
| Pb-free SOIC-8 packaging | M8.15 footprint compatible with standard reflow profiles (J-STD-020 MSL3)-supports automated assembly and RoHS compliance |
Applications
| RS-232 Transceiver Power | Data Acquisition System Bias |
|---|---|
Use Scenario: Generating ±12V rails from a single 5V microcontroller supply for MAX232-class interface ICs. IC Role / Device Role / Timing Role: Negative voltage converter providing stable -12V output with <120Ω source impedance at 10mA load. Use Value: Eliminates need for discrete charge-pump circuits or transformer-based isolated supplies-reducing BOM count and PCB area by >40%. |
Use Scenario: Supplying dual-rail analog front-ends in portable multimeters or sensor signal conditioners operating from 3.3V or 5V batteries. IC Role / Device Role / Timing Role: Low-quiescent-current (≤180µA) negative rail generator enabling true bipolar ADC input ranges without external regulators. Use Value: Maintains ≥99% open-circuit conversion efficiency-extending battery life while preserving measurement accuracy under light loads. |
| Industrial Instrumentation Supplies | Split-Rail Audio Amplifier Bias |
Use Scenario: Creating matched ±5V supplies for op-amp-based signal conditioning in PLC analog I/O modules exposed to -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Industrial-temperature-qualified voltage inverter delivering -5V at 20mA with ≤120Ω output resistance across full temp range. Use Value: Guarantees stable rail performance without derating-enabling direct replacement of legacy ICL7660 in field-deployed equipment. |
Use Scenario: Biasing Class-AB audio amplifiers in compact consumer devices (e.g., Bluetooth speakers) using a single 9V supply. IC Role / Device Role / Timing Role: Supply splitter generating ±4.5V rails via cascaded configuration, leveraging bidirectional switching architecture. Use Value: Achieves rail symmetry within 50mV without trimming-reducing THD+N in low-power headphone drivers by minimizing common-mode offset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICL7660SIBAZ | Pb-free version of ICL7660SIBA; identical electrical specs and SOIC-8 footprint; RoHS-compliant matte tin termination | No functional difference; intended for new designs requiring Pb-free compliance and J-STD-020 MSL3 reflow compatibility | Select ICL7660SIBAZ for production builds targeting RoHS certification and long-term component availability. |
| MAX1044CSA+ | Higher 35kHz max oscillator frequency; 100µA max supply current at 25°C; requires external timing capacitor for frequency control | Better ripple performance at high frequencies but lacks BOOST pin simplicity; less tolerant of low-VIN operation below 2.5V | Choose MAX1044CSA+ only when ultra-low output impedance (<40Ω) at 20mA is required and layout allows dedicated timing cap placement. |
Compared with ICL7660SIBAZ, the ICL7660SIBA offers identical functionality but with SnPb termination-suitable for legacy reflow or wave-solder processes. Against MAX1044CSA+, the ICL7660SIBA provides simpler BOOST-pin frequency scaling and guaranteed 1.5V start-up, trading off some high-frequency ripple reduction for design flexibility and broader voltage compatibility.
Availability
ICL7660SIBA is available at Aetrix Electronics and suitable for RS-232 power generation, industrial data acquisition biasing, and split-rail audio amplifier applications requiring stable component supply across extended temperature ranges.
Supply support for ICL7660SIBA 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 markets.
The ICL7660SIBA belongs to the Super Voltage Converter family, designed specifically to replace legacy ICL7660 solutions with enhanced efficiency, wider voltage range, and robust latchup immunity for industrial-grade power conversion.
FAQ
What is the minimum input voltage supported by the ICL7660SIBA?
The ICL7660SIBA supports a minimum input voltage of 1.5V when the LV pin is tied to GND to bypass the internal series regulator. At this setting, it delivers a corresponding -1.5V output with guaranteed performance across the full -40°C to +85°C operating range. Operation below 1.5V is not specified or characterized.
How does the BOOST pin on the ICL7660SIBA affect output performance?
The BOOST pin (Pin 1) on the ICL7660SIBA increases oscillator frequency from 10kHz to ~35kHz when connected to V+, directly lowering output source resistance and ripple voltage. This enables use of smaller 0.1µF external capacitors instead of 10µF units while maintaining equivalent load capability-critical for space-constrained SOIC-8 designs.
Can the ICL7660SIBA be used as a voltage doubler, and what is its maximum output?
Yes, the ICL7660SIBA can be configured as a voltage doubler. With a 12V input, it generates up to +22.8V output (2 × 12V minus diode drops). This requires external diodes and proper capacitor sizing per Figure 18 in the FN3179 datasheet. Output current capability remains limited by internal switch resistance and capacitor ESR.
Is an external Schottky diode required for reliable operation of the ICL7660SIBA?
An external Schottky diode from VOUT (Pin 5) to CAP- (Pin 4) is recommended when the input voltage exceeds 5.5V and has a fast rise time (>2V/µs), to prevent forward-biasing the body diode of internal transistor Q4 and causing latchup. For ≤5.5V inputs or slow-rising supplies, the ICL7660SIBA operates reliably without external diodes.
What is the purpose of the LV pin on the ICL7660SIBA, and how should it be configured?
The LV pin on the ICL7660SIBA controls internal regulator bypass. For inputs ≤3.5V, tie LV to GND to disable the regulator and ensure reliable low-voltage operation. For inputs >3.5V, leave LV floating to maintain latchup immunity-connecting LV to GND above 3.5V risks destructive device failure.
ICL7660SIBA 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7660SIBA FAQ
1.How can I place an order for ICL7660SIBA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660SIBA 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 ICL7660SIBA reliable?
The price and inventory of ICL7660SIBA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660SIBA is usually 5 days.
3.What payment methods are accepted for ICL7660SIBA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660SIBA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660SIBA?
ICL7660SIBA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660SIBA 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 ICL7660SIBA?
For technical support, including ICL7660SIBA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660SIBA requirements.
6.How does Aetrix verify that ICL7660SIBA is sourced from the original manufacturer or authorized distributors?
All ICL7660SIBA 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 ICL7660SIBA meets industry standards.
7.What is the process for return or replacement of ICL7660SIBA?
All ICL7660SIBA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660SIBA, 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 ICL7660SIBA part is unused and in its original packaging.
Return procedure for ICL7660SIBA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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