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Renesas ICL7660AIBA
- Part No.:
- ICL7660AIBA
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7660AIBA.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
ICL7660AIBA 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 Boost pin (Pin 1) enabling oscillator frequency up to 35kHz, 96% minimum power efficiency, and industrial temperature range (-40°C to +85°C) in an 8-lead SOIC package.
For engineers reviewing the ICL7660AIBA datasheet, ICL7660AIBA pinout, ICL7660AIBA application, or ICL7660AIBA equivalent, this device serves as a drop-in upgrade to the legacy ICL7660 with extended supply range, lower quiescent current, improved latchup immunity, and enhanced efficiency-critical for RS-232 supplies, data acquisition rails, and dual-supply instrumentation.
Technical Context
The ICL7660AIBA integrates an internal RC oscillator (10kHz nominal at 5V), voltage level translator, series DC regulator, and four MOS power switches (one P-channel, three N-channel) configured in a switched-capacitor topology. Its substrate bias logic network dynamically adjusts switch substrates to prevent latchup during start-up and short-circuit conditions.
Operation relies on charge transfer between external pump (CAP+) and reservoir (CAP−) capacitors. The LV pin bypasses the internal regulator when tied to GND-enabling stable operation down to 1.5V-but must remain floating above 3.5V to avoid latchup. Oscillator frequency is adjustable via BOOST pin or external clock injection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V–12V input; supports low-voltage logic (1.5V) and high-voltage industrial rails (12V) without external regulation |
| Oscillator Frequency | 5–35kHz (adjustable via BOOST pin or external clock); higher frequency reduces output impedance and enables smaller external capacitors |
| Output Source Resistance | 60Ω typical at 20mA/5V; increases to ≤120Ω over full -40°C to +85°C range-directly impacts load regulation and ripple under dynamic current |
| Power Efficiency | ≥96% at 5kΩ load; ensures minimal thermal rise and battery drain in portable instrumentation and sensor nodes |
| Voltage Conversion Efficiency | ≥99% open-circuit; maintains near-ideal voltage inversion with negligible droop under no-load conditions |
| Supply Current | ≤125µA over -40°C to +85°C at V+ = 3V; enables ultra-low-power negative rail generation in always-on monitoring circuits |
Pinout & Package
ICL7660AIBA is housed in an 8-lead SOIC (N) package (JEDEC MS-012, pkg drawing M8.15), surface-mount compatible with standard reflow profiles and RoHS-compliant matte tin terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator boost control | Connecting to V+ triples oscillator frequency (~35kHz), lowering output impedance and permitting use of 0.1µF capacitors instead of 10µF |
| 2 (CAP+) | Pump capacitor connection | Anode of external charge-pump capacitor; switched between V+ and CAP− to transfer charge into reservoir |
| 3 (GND) | Ground reference | Common return for internal logic, oscillator, and substrate bias network; critical for latchup prevention |
| 4 (CAP−) | Reservoir capacitor connection | Cathode of external reservoir capacitor; forms negative output node with VOUT; Schottky diode may be added here for latchup margin above 5.5V |
| 5 (VOUT) | Negative output terminal | Delivers inverted voltage (–V+); must never exceed GND potential-latchup occurs if forward-biased relative to GND |
| 6 (OSC) | Oscillator timing node | Accepts external capacitor to reduce frequency (e.g., 100pF → 1kHz) or external TTL clock (via 1kΩ series resistor) |
| 7 (LV) | Low-voltage mode enable | Tie to GND for 1.5–3.5V operation (bypasses internal regulator); leave floating for 3.5–12V 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 (Pin 1) | Enables 3.5× oscillator frequency increase without external components-reduces output impedance by ~60% and permits 10× smaller external capacitors |
| LV pin logic | Hardware-selectable low-voltage mode: GND tie enables reliable 1.5V operation; floating state prevents latchup at ≥3.5V-no software or external control needed |
| SCR latchup protection | Dedicated substrate bias network senses VOUT and dynamically adjusts switch substrates-eliminates need for external diodes across all operating conditions |
| 99% open-circuit conversion efficiency | Minimizes voltage droop under light loads-critical for precision analog front-ends and reference splitting where rail stability dominates performance |
| Industrial temperature range | Specified and tested from –40°C to +85°C-ensures consistent charge-pump behavior in automotive cabin modules, industrial PLC I/O, and outdoor sensor nodes |
Applications
| RS-232 Power Supply | Data Acquisition System Rails |
|---|---|
Use Scenario: Generating ±12V from a single 5V microcontroller supply for RS-232 transceivers (e.g., MAX232 replacement). IC Role / Device Role / Timing Role: Negative voltage converter providing isolated –5V to –12V output; operates asynchronously with no timing constraints beyond oscillator stability. Use Value: Eliminates need for inductive DC/DC converters-reducing EMI, board area, and BOM cost while maintaining sufficient current (≥10mA) for line driver biasing. |
Use Scenario: Creating dual ±5V supplies for 16-bit ADCs and op-amp signal conditioning stages in portable test equipment. IC Role / Device Role / Timing Role: Precision negative rail generator; low output impedance (<120Ω) and 99% open-circuit efficiency ensure minimal offset drift and SNR degradation. Use Value: Enables true bipolar input ranges without transformer-based isolation-preserving layout simplicity and measurement accuracy in low-noise analog chains. |
| Instrumentation Supply Splitter | Low-Power Sensor Node Bias |
Use Scenario: Splitting a 10V sensor excitation supply into ±5V rails for bridge amplifier and reference circuitry in strain-gauge modules. IC Role / Device Role / Timing Role: Bidirectional voltage splitter; leverages internal switch symmetry to balance load sharing between positive and negative outputs. Use Value: Achieves <250Ω combined output resistance at ±5V-sufficient for 10mA sensor bias while avoiding discrete op-amp rail-splitter complexity and quiescent current penalty. |
Use Scenario: Providing –3.3V bias for low-noise JFET preamplifiers in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Ultra-low-quiescent-current negative generator; LV pin tied to GND enables stable 1.5V–3.5V operation with ≤125µA supply current. Use Value: Extends battery life in multi-year deployments-consuming <1µA average over duty-cycled sampling, with no startup delay or regulation overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICL7660AIBAZA | Pb-free (RoHS-compliant) variant of ICL7660AIBA; identical electrical specs, same SOIC-8 package, matte tin terminations | Required for new designs targeting RoHS compliance; compatible with both SnPb and Pb-free soldering processes | Select ICL7660AIBAZA for production builds requiring lead-free certification; ICL7660AIBA remains viable for legacy repair or non-RoHS environments |
| MAX1044CPA+ | Pin-compatible but higher quiescent current (250µA typ); no BOOST pin; fixed 10kHz oscillator; wider temp range (0°C to +70°C only) | Limited to commercial-temperature applications; less suitable for battery-powered or industrial ambient conditions | Choose MAX1044CPA+ only if existing PCB layout mandates pin compatibility and temperature range is not required beyond 0°C–70°C |
Compared with ICL7660AIBA, ICL7660AIBAZA offers identical performance with RoHS compliance, while MAX1044CPA+ trades efficiency and temperature range for legacy footprint compatibility-making ICL7660AIBA optimal for new industrial designs demanding low IQ and wide thermal margins.
Availability
ICL7660AIBA is available at Aetrix Electronics and suitable for RS-232 power supplies, data acquisition system rails, and instrumentation supply splitters requiring stable component supply across extended temperature and voltage ranges.
Supply support for ICL7660AIBA 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 ICL7660AIBA belongs to Renesas' Super Voltage Converter family, engineered to replace legacy ICL7660 devices with extended voltage range, lower quiescent current, and robust latchup immunity for precision analog and interface power applications.
FAQ
What is the maximum input voltage rating for the ICL7660AIBA?
The ICL7660AIBA has an absolute maximum supply voltage rating of +13.0V. Its guaranteed operational range is 1.5V to 12V, with full specification across the industrial temperature range (-40°C to +85°C). Exceeding 13V risks permanent damage due to internal junction breakdown, and operation above 12V voids parametric guarantees-even if below the absolute maximum.
Can the ICL7660AIBA generate positive voltage doubling?
Yes, the ICL7660AIBA can function as a voltage doubler using the configuration in Figure 18 of the FN3179 datasheet. With a 12V input, it delivers up to 22.8V output. This requires external diodes (D1, D2) and separate pump/reservoir capacitors. The ICL7660AIBA's internal switches handle charge transfer, but the doubler topology is distinct from its native inverting mode and incurs additional forward voltage drops.
Is an external Schottky diode required for ICL7660AIBA reliability?
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), per datasheet Note 6. This prevents latchup caused by forward-biasing Q4's body diode during transient conditions. For ≤5.5V supplies or slow-rising inputs, the ICL7660AIBA operates reliably without external diodes.
How does the LV pin affect ICL7660AIBA operation below 3.5V?
When the LV pin is tied to GND, the ICL7660AIBA bypasses its internal series regulator, enabling stable operation down to 1.5V input. This mode reduces dropout and improves efficiency at low voltages. However, leaving LV floating above 3.5V is mandatory to prevent latchup-connecting LV to GND at >3.5V violates absolute maximum ratings and may cause destructive failure.
What is the purpose of the BOOST pin (Pin 1) on the ICL7660AIBA?
The BOOST pin (Pin 1) increases the internal oscillator's charge/discharge current, raising its frequency from 10kHz (typical) to ~35kHz when connected to V+. This reduces output impedance and ripple, allowing smaller external capacitors (e.g., 0.1µF instead of 10µF) without sacrificing load capability-especially valuable in space-constrained surface-mount designs.
ICL7660AIBA 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:
- 3kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7660AIBA FAQ
1.How can I place an order for ICL7660AIBA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660AIBA 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 ICL7660AIBA reliable?
The price and inventory of ICL7660AIBA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660AIBA is usually 5 days.
3.What payment methods are accepted for ICL7660AIBA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660AIBA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660AIBA?
ICL7660AIBA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660AIBA 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 ICL7660AIBA?
For technical support, including ICL7660AIBA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660AIBA requirements.
6.How does Aetrix verify that ICL7660AIBA is sourced from the original manufacturer or authorized distributors?
All ICL7660AIBA 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 ICL7660AIBA meets industry standards.
7.What is the process for return or replacement of ICL7660AIBA?
All ICL7660AIBA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660AIBA, 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 ICL7660AIBA part is unused and in its original packaging.
Return procedure for ICL7660AIBA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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