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Renesas ICL7660AIBA-T
- Part No.:
- ICL7660AIBA-T
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7660AIBA-T.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,680
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Product details
Overview
ICL7660AIBA-T from Intersil (now Renesas) is a monolithic CMOS charge-pump voltage converter IC that performs positive-to-negative supply 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, reduced output impedance, and guaranteed 96% power efficiency at 5V/5kΩ load. Used in RS-232 power supplies and data acquisition systems requiring compact dual-rail generation.
For engineers reviewing the ICL7660AIBA-T datasheet, ICL7660AIBA-T pinout, ICL7660AIBA-T application, or ICL7660AIBA-T equivalent, key selection criteria include its industrial temperature range (-40°C to +85°C), LV pin bypass capability for low-voltage operation, 8-pin SOIC package, and verified performance as a drop-in upgrade over legacy ICL7660 with extended voltage range and lower quiescent current.
Technical Context
The ICL7660AIBA-T integrates an internal RC oscillator (10kHz nominal at 5V, adjustable via OSC pin or BOOST pin), 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 actively monitors VOUT to dynamically adjust switch substrates and prevent latch-up under start-up or short-circuit conditions.
Operation relies on charge transfer between external pump (CAP+) and reservoir (CAP-) capacitors. The LV pin enables regulator bypass below 3.5V for improved low-VIN efficiency, while floating LV above 3.5V ensures latchup immunity. Output source resistance is tightly specified (60Ω typ. at 20mA, 5V, +25°C) and varies predictably with temperature, supply voltage, and oscillator frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V–12V input; supports direct +5V-to-±5V rail splitting without external regulators |
| Oscillator Frequency | 5–35kHz (adjustable via BOOST pin or external capacitor); higher fOSC lowers output impedance |
| Power Efficiency | ≥96% at RL = 5kΩ; enables high-efficiency negative rail generation with minimal thermal overhead |
| Output Source Resistance | 60Ω typical at 20mA, 5V, +25°C; defines maximum load regulation error and ripple under dynamic load |
| Temperature Range | -40°C to +85°C; qualified for industrial environments without derating |
| Supply Current | 26–125µA (typ.–max) at 3V, -40°C to +85°C; enables ultra-low-power portable instrumentation |
| Voltage Conversion Efficiency | 99% minimum open-circuit; ensures near-ideal voltage inversion for precision analog front-ends |
Pinout & Package
ICL7660AIBA-T is housed in an 8-lead SOIC (Small Outline Integrated Circuit) package per JEDEC MS-012, 3.9mm body width, 1.27mm lead pitch, RoHS-compliant matte tin finish (e3). Thermal resistance θJA = 160°C/W (typ.), θJC = 48°C/W (typ.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator boost control | Connecting to V+ triples oscillator frequency (~35kHz), reducing output impedance and enabling smaller external capacitors |
| 2 (CAP+) | Pump capacitor connection | Anode of external charge-pump capacitor; polarity critical for polarized electrolytics (+ to Pin 2) |
| 3 (GND) | Ground reference | System ground return; output (Pin 5) must never exceed GND to avoid latch-up |
| 4 (CAP-) | Reservoir capacitor connection | Cathode of external reservoir capacitor; Schottky diode may be added from VOUT (Pin 5) to CAP- for latch-up protection at V+ > 5V |
| 5 (VOUT) | Negative output terminal | Delivers inverted voltage (-VIN); output impedance directly impacts load regulation and ripple |
| 6 (OSC) | Oscillator timing node | Accepts external capacitor to lower frequency or external clock (via 1kΩ series resistor) for precise timing control |
| 7 (LV) | Low-voltage mode enable | Tie to GND for VIN < 3.5V to bypass internal regulator; leave floating for VIN ≥ 3.5V to prevent latch-up |
| 8 (V+) | Positive input supply | Main power input; maximum 13V absolute rating; rise rate >2V/µs requires 2.2µF bypass to GND |
Key Features
| Feature | Design Value |
|---|---|
| Boost pin (Pin 1) | Enables 3.5× oscillator frequency increase, lowering output impedance by ~3× and permitting 0.1µF external capacitors instead of 10µF |
| LV pin bypass | Allows regulator disable below 3.5V, improving efficiency and enabling reliable start-up at 1.5V input |
| Guaranteed 96% power efficiency | Validated across full industrial temperature range, minimizing heat dissipation in enclosed systems |
| 100% tested at 3V | Ensures functional reliability at minimum operating voltage without screening gaps |
| SCR latchup protection | Active substrate bias control prevents destructive latch-up during transients, short circuits, or hot insertion |
Applications
| RS-232 Power Supply | Data Acquisition Systems |
|---|---|
|
Use Scenario: Generating ±12V rails from a single +5V microcontroller supply for RS-232 line drivers/receivers. IC Role / Device Role / Timing Role: Charge-pump voltage inverter providing isolated negative rail; no timing interface required-self-oscillating. Use Value: Eliminates need for external inductors or transformers; achieves <100mV ripple with 10µF capacitors and BOOST pin enabled. |
Use Scenario: Creating clean -5V reference for 16-bit ADC front-end in portable test equipment. IC Role / Device Role / Timing Role: Precision negative supply generator; LV pin tied to GND ensures stable operation at 2.5V system rail. Use Value: 99% open-circuit conversion efficiency preserves signal integrity; output source resistance ≤120Ω maintains <0.1% gain error at 10mA load. |
| Instrumentation Amplifier Bias | Supply Splitter for Op-Amp Circuits |
|
Use Scenario: Providing symmetrical ±9V supplies for rail-to-rail op-amps in battery-powered sensor signal conditioning. IC Role / Device Role / Timing Role: Dual-rail generator; BOOST pin used to raise fOSC to 25kHz, reducing capacitor size and board area. Use Value: Enables use of 1µF ceramic capacitors instead of 10µF electrolytics-improving reliability and temperature stability. |
Use Scenario: Splitting a +15V supply into ±7.5V rails for audio preamplifier stages in industrial control panels. IC Role / Device Role / Timing Role: Bidirectional voltage splitter; cascaded configuration (Figure 20) shares load across internal switches. Use Value: Achieves <250Ω combined output impedance-sufficient for 5mA per rail without external regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICL7660SIBA-T | Wider supply range (1.5V–12V same), but higher max supply current (180µA vs. 125µA at -40°C to +85°C); identical pinout and function | Preferred where lowest possible quiescent current is critical; otherwise functionally interchangeable | Select ICL7660AIBA-T for lower I+ in industrial temp range; choose ICL7660SIBA-T only if legacy design validation exists |
| MAX660CPA+ | Different oscillator architecture (fixed 80kHz); higher typical supply current (120µA vs. 26µA at 3V); requires different capacitor values | Used where higher switching frequency is acceptable and tighter output regulation is needed via external feedback | ICL7660AIBA-T offers better low-VIN efficiency and simpler layout; MAX660CPA+ suits designs needing lower ripple at light loads |
Compared with ICL7660SIBA-T, the ICL7660AIBA-T delivers lower quiescent current across the full -40°C to +85°C range, enhancing battery life in portable instrumentation; versus MAX660CPA+, it provides superior 1.5V start-up capability and eliminates need for external regulation components in basic inverter configurations.
Availability
ICL7660AIBA-T is available at Aetrix Electronics and suitable for RS-232 power supplies, data acquisition systems, and instrumentation amplifier biasing requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for ICL7660AIBA-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
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-T belongs to the Super Voltage Converter family, designed specifically for compact, inductorless DC-DC voltage inversion in space-constrained analog and mixed-signal systems.
FAQ
What is the minimum input voltage supported by the ICL7660AIBA-T?
The ICL7660AIBA-T supports a minimum input voltage of 1.5V when the LV pin is tied to GND. This bypasses the internal series regulator and enables reliable start-up and operation down to the specified lower limit, making it suitable for single-cell lithium or alkaline battery-powered devices where supply voltage drops below 3.5V.
How does the BOOST pin affect output performance of the ICL7660AIBA-T?
The BOOST pin (Pin 1) on the ICL7660AIBA-T increases oscillator frequency from ~10kHz to ~35kHz when connected to V+, which reduces output source impedance by approximately 3× and allows use of smaller external capacitors (e.g., 0.1µF instead of 10µF) without sacrificing output current capability or increasing ripple.
Can the ICL7660AIBA-T be used as a voltage doubler?
Yes, the ICL7660AIBA-T can be configured as a voltage doubler using the circuit in Figure 18 of the datasheet. With a 12V input, it generates up to 22.8V output. This requires external diodes and capacitors, and the output source impedance will be higher than in inverter mode-approximately 60Ω at 10mA with 5V input.
What is the purpose of the LV pin on the ICL7660AIBA-T?
The LV pin on the ICL7660AIBA-T controls the internal series regulator. When tied to GND, it disables the regulator to improve efficiency and enable operation down to 1.5V input. When left floating, the regulator remains active-required for inputs ≥3.5V to prevent latch-up and ensure robust operation across the full 1.5V–12V range.
Is the ICL7660AIBA-T pin-compatible with the original ICL7660?
Yes, the ICL7660AIBA-T is a direct replacement for the industry-standard ICL7660 with identical 8-pin SOIC pinout and footprint. It adds enhancements-including extended voltage range (1.5V–12V), lower supply current, BOOST pin, and improved latchup protection-without requiring PCB changes or layout modifications.
ICL7660AIBA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for ICL7660AIBA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660AIBA-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 ICL7660AIBA-T reliable?
The price and inventory of ICL7660AIBA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660AIBA-T is usually 5 days.
3.What payment methods are accepted for ICL7660AIBA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660AIBA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660AIBA-T?
ICL7660AIBA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660AIBA-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 ICL7660AIBA-T?
For technical support, including ICL7660AIBA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660AIBA-T requirements.
6.How does Aetrix verify that ICL7660AIBA-T is sourced from the original manufacturer or authorized distributors?
All ICL7660AIBA-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 ICL7660AIBA-T meets industry standards.
7.What is the process for return or replacement of ICL7660AIBA-T?
All ICL7660AIBA-T units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660AIBA-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 ICL7660AIBA-T part is unused and in its original packaging.
Return procedure for ICL7660AIBA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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