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Renesas ICL7660ACPAZ
- Part No.:
- ICL7660ACPAZ
- Manufacturer:
- Renesas
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7660ACPAZ.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:514
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Product details
Overview
ICL7660ACPAZ from 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 (boostable to ~35kHz via BOOST pin), ≤120Ω output source resistance at 20mA, ≥96% power efficiency, and operates over 0°C to +70°C. It is used in RS-232 power supplies and data acquisition systems requiring compact dual-rail generation.
For engineers reviewing the ICL7660ACPAZ datasheet, ICL7660ACPAZ pinout, ICL7660ACPAZ application, or ICL7660ACPAZ equivalent, this page delivers verified electrical parameters, validated PDIP-8 package mapping, confirmed BOOST/OSC/LV control behavior, and real-world design implications for low-noise negative rail generation without inductors.
Technical Context
The ICL7660ACPAZ 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 voltage inverter topology. Its substrate bias logic network actively prevents SCR latchup by dynamically adjusting switch body-node voltages based on VOUT feedback.
Operation relies on charge transfer between external pump (CAP+) and reservoir (CAP−) capacitors. The BOOST pin (Pin 1) increases oscillator drive current to raise switching frequency-reducing output impedance and enabling smaller external capacitors-while the LV pin (Pin 6) bypasses the internal regulator for improved <3.5V operation but must float above 3.5V to avoid latchup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V–12V input; enables direct +5V-to-±5V rail splitting without external regulators |
| Oscillator Frequency | 10kHz typical (free-running); boosted to ~35kHz with Pin 1 tied to V+, lowering output impedance |
| Output Source Resistance | ≤120Ω at 20mA, 0°C–+70°C; determines load regulation and ripple under dynamic current draw |
| Power Efficiency | ≥96% at 5kΩ load; minimizes thermal rise and input supply burden in battery-powered systems |
| Voltage Conversion Efficiency | ≥99% open-circuit; ensures near-ideal inversion with minimal quiescent loss in low-power standby |
| Supply Current | ≤125µA at 3V, 0°C–+70°C; supports ultra-low-power instrumentation and sensor interfaces |
| Operating Temperature | 0°C to +70°C commercial range; validated for industrial control panels and embedded peripherals |
Pinout & Package
ICL7660ACPAZ is housed in an 8-lead plastic DIP (PDIP) package per JEDEC MS-001, RoHS-compliant with matte tin (e3) termination, suitable for wave soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator frequency boost control | Tie to V+ to increase fOSC ~3.5×, reducing output impedance and enabling smaller external capacitors |
| 2 (CAP+) | Charge pump capacitor connection | Anode of pump capacitor C1; carries full switching current; requires low-ESR electrolytic or ceramic |
| 3 (GND) | Ground reference | System ground return for all internal circuitry and external capacitors |
| 4 (CAP−) | Charge reservoir capacitor connection | Cathode of reservoir capacitor C2; forms negative output node; critical for ripple suppression |
| 5 (VOUT) | Negative output terminal | Delivers inverted voltage (–VIN); must not exceed GND potential to prevent latchup |
| 6 (LV) | Low-voltage mode enable | Connect to GND for 1.5V–3.5V operation; leave floating for 3.5V–12V to avoid latchup |
| 7 (OSC) | Oscillator timing node | Accepts external capacitor to lower fOSC or external clock (via 1kΩ series resistor) for noise-sensitive designs |
| 8 (V+) | Positive input supply | Primary power input; also serves as reference for internal regulator and logic levels |
Key Features
| Feature | Design Value |
|---|---|
| Boost pin (Pin 1) | Enables 3.5× oscillator frequency increase without external components, cutting output impedance by >50% for same capacitor values |
| LV pin control | Allows regulator bypass below 3.5V, extending usable input range to 1.5V while maintaining latchup immunity above 3.5V |
| 100% tested at 3V | Guarantees functionality and parameter compliance at low-voltage battery operation, eliminating qualification uncertainty |
| SCR latchup protection | Active substrate bias logic eliminates need for external Schottky diode in most applications, simplifying BOM and layout |
| Pb-free (RoHS) | Matte tin (e3) finish compatible with SnPb and Pb-free wave soldering; MSL rating defined per J-STD-020 |
Applications
| RS-232 Power Supply | Data Acquisition System Bias |
|---|---|
Use Scenario: Generating ±12V rails from a single +5V microcontroller supply for legacy RS-232 transceivers. IC Role / Device Role / Timing Role: Charge-pump inverter providing isolated negative rail; no timing interface required-self-oscillating. Use Value: Eliminates need for inductors or transformers, reducing board area and EMI in compact serial interface modules. |
Use Scenario: Providing clean -5V reference for 16-bit ADC front-ends in portable test equipment. IC Role / Device Role / Timing Role: Precision negative voltage source; BOOST pin used to minimize output impedance at 10kHz switching. Use Value: Achieves <120Ω output resistance at 20mA, ensuring stable reference under dynamic analog signal sampling. |
| Instrumentation Supply Splitter | Low-Power Sensor Interface |
Use Scenario: Converting +9V battery supply into ±4.5V rails for op-amp-based signal conditioning circuits. IC Role / Device Role / Timing Role: Bidirectional voltage splitter; LV pin grounded to optimize efficiency at low input voltage. Use Value: Delivers ≥99% open-circuit conversion efficiency, preserving battery life in unattended field sensors. |
Use Scenario: Powering low-noise JFET-input op-amps in IoT environmental sensors operating from 3V coin cells. IC Role / Device Role / Timing Role: Ultra-low-quiescent inverter; supply current ≤100µA at 3V ensures multi-year battery runtime. Use Value: Enables true bipolar operation (±3V) from single-cell sources without compromising signal integrity or power budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICL7660SCPAZ | Same pinout and function; rated for -40°C to +85°C industrial temperature range vs. ICL7660ACPAZ's 0°C to +70°C | Suitable for automotive engine control or outdoor industrial sensors requiring extended thermal margin | Select ICL7660SCPAZ when ambient operating temperature exceeds +70°C or drops below 0°C |
| MAX1044CPA+ | Higher 35kHz max fOSC (no BOOST pin needed); 80µA typical I+ at 5V; requires external timing capacitor for frequency control | Better high-frequency ripple performance; less sensitive to capacitor ESR due to higher base frequency | Choose MAX1044CPA+ when minimizing output ripple at light loads is prioritized over component count simplicity |
Compared with ICL7660SCPAZ, the ICL7660ACPAZ trades extended temperature range for lower cost and tighter supply current spec at 3V; versus MAX1044CPA+, it offers simpler BOOST-based frequency scaling but requires larger capacitors for equivalent output impedance.
Availability
ICL7660ACPAZ is available at Aetrix Electronics and suitable for RS-232 power supplies, data acquisition system biasing, and instrumentation supply splitting requiring stable component supply across commercial temperature environments.
Supply support for ICL7660ACPAZ 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 is a global semiconductor leader delivering microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and enterprise applications.
The ICL7660A product line was designed specifically for compact, inductorless DC-DC voltage inversion in space-constrained analog and mixed-signal systems-emphasizing latchup immunity, wide input range, and ease of use with minimal external components.
FAQ
What is the maximum input voltage the ICL7660ACPAZ can handle?
The ICL7660ACPAZ has an absolute maximum supply voltage of +13.0V, but its specified operating range is 1.5V to 12V. Operation at 12V is fully characterized across 0°C to +70°C, delivering -12V output with ≥95% power efficiency and ≤150Ω output resistance at 20mA. Exceeding 12V risks parametric degradation and is not guaranteed by Renesas.
Can the ICL7660ACPAZ be used as a voltage doubler?
Yes, the ICL7660ACPAZ can be configured as a positive voltage doubler per Figure 18 in the FN3179 datasheet, generating up to 22.8V from a 12V input using external diodes. However, this configuration requires D1 and D2 (e.g., 1N4148), increases output impedance, and reduces overall efficiency compared to its native inverting mode. The ICL7660ACPAZ itself does not integrate doubling logic-it relies on external passive components to achieve this function.
Is an external Schottky diode required for safe operation of the ICL7660ACPAZ?
An external Schottky diode from VOUT (Pin 5) to CAP− (Pin 4) is recommended only when the input voltage exceeds 5V *and* has a rise rate >2V/µs, per Note 6 in the "Do's and Don'ts" section. For standard +5V logic-supply applications with controlled ramp-up, the ICL7660ACPAZ operates safely without any external diode due to its integrated latchup protection circuitry.
How does the BOOST pin (Pin 1) affect the ICL7660ACPAZ performance?
Tying the BOOST pin (Pin 1) to V+ increases the internal oscillator's charge/discharge current, raising the switching frequency from ~10kHz to ~35kHz. This directly lowers output source resistance-enabling use of smaller (e.g., 0.1µF) external capacitors while maintaining equivalent output impedance-and reduces output ripple. The BOOST function is exclusive to the ICL7660A family and is not present in the legacy ICL7660.
What is the purpose of the LV pin (Pin 6) on the ICL7660ACPAZ?
Connecting the LV pin (Pin 6) to GND disables the internal series regulator, improving efficiency and enabling reliable operation down to 1.5V input-critical for single-cell battery systems. At input voltages above 3.5V, the LV pin must remain floating; grounding it in this range causes destructive latchup. This dual-mode capability makes the ICL7660ACPAZ uniquely flexible across low- and medium-voltage applications.
ICL7660ACPAZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- 3kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7660ACPAZ FAQ
1.How can I place an order for ICL7660ACPAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660ACPAZ 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 ICL7660ACPAZ reliable?
The price and inventory of ICL7660ACPAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660ACPAZ is usually 5 days.
3.What payment methods are accepted for ICL7660ACPAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660ACPAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660ACPAZ?
ICL7660ACPAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660ACPAZ 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 ICL7660ACPAZ?
For technical support, including ICL7660ACPAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660ACPAZ requirements.
6.How does Aetrix verify that ICL7660ACPAZ is sourced from the original manufacturer or authorized distributors?
All ICL7660ACPAZ 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 ICL7660ACPAZ meets industry standards.
7.What is the process for return or replacement of ICL7660ACPAZ?
All ICL7660ACPAZ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660ACPAZ, 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 ICL7660ACPAZ part is unused and in its original packaging.
Return procedure for ICL7660ACPAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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