My Inquiry
My Account
Renesas ICL7660ACBA
- Part No.:
- ICL7660ACBA
- Manufacturer:
- Renesas
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ICL7660ACBA.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICL7660ACBA 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 10kHz nominal oscillator, BOOST pin for frequency scaling up to ~35kHz, and LV pin for low-voltage operation mode. Used in RS-232 power supplies and data acquisition systems requiring compact ±5V generation.
For engineers reviewing the ICL7660ACBA datasheet, ICL7660ACBA pinout, ICL7660ACBA application, or ICL7660ACBA equivalent, key selection considerations include its 0°C to +70°C commercial temperature range, 8-lead SOIC package, guaranteed 96% power efficiency at 5kΩ load, and compatibility with 10µF electrolytic pump/reservoir capacitors without requiring critical tolerance or low-ESR specification.
Technical Context
The ICL7660ACBA 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 prevents SCR latchup by dynamically adjusting switch body-node voltages based on VOUT sensing.
Operation supports multiple topologies: basic inverting converter (VOUT ≈ –VIN), voltage doubler (VOUT ≈ +2VIN), cascaded multiplication, and supply splitting. The BOOST pin (Pin 1) increases oscillator current to raise fOSC ~3.5×, reducing output impedance; the LV pin (Pin 6) bypasses the internal regulator when tied to GND for inputs ≤3.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V–12V input; enables direct use with 3.3V/5V logic rails and battery-powered systems down to single-cell alkaline. |
| Oscillator Frequency | 10kHz typical at 5V (free-running); adjustable via BOOST pin (up to ~35kHz) or external capacitor on OSC pin (down to ~1kHz). |
| Output Source Resistance | 60Ω typical at 20mA/5V; defines maximum load regulation error and ripple under dynamic current draw. |
| Power Efficiency | 96% minimum at 5kΩ load; ensures minimal thermal rise and high energy reuse in portable instrumentation. |
| Voltage Conversion Efficiency | 99% minimum open-circuit; maintains near-ideal inversion ratio under light loads common in analog front-ends. |
| Supply Current | 80µA typical at 5V/25°C; ultra-low quiescent draw extends battery life in always-on sensor nodes. |
| Operating Temperature | 0°C to +70°C; qualified for commercial-grade embedded control and industrial HMI applications. |
Pinout & Package
ICL7660ACBA is housed in an 8-lead SOIC (Small Outline Integrated Circuit) package per JEDEC MS-012, 1.27mm pitch, with Pb-free (RoHS-compliant) matte tin terminations and M8.15 package drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BOOST | Oscillator frequency boost control | Connecting to V+ increases oscillator drive current, raising fOSC ~3.5× to reduce output impedance and enable smaller external capacitors. |
| 2 - CAP+ | Charge pump capacitor connection | Anode of primary pump capacitor (C1); alternately charged/discharged to transfer charge to CAP− and VOUT nodes. |
| 3 - GND | Ground reference | System ground return for internal regulator, oscillator, and switch logic; must be low-impedance for stable operation. |
| 4 - CAP− | Charge reservoir capacitor connection | Cathode of reservoir capacitor (C2); stores inverted voltage and supplies load current during switching phases. |
| 5 - VOUT | Negative output terminal | Delivers regulated negative voltage (–VIN); requires external Schottky diode to CAP− if V+ > 5.5V and fast-rising input present. |
| 6 - LV | Low-voltage mode enable | Tie to GND to disable internal regulator for improved efficiency below 3.5V; leave floating for 3.5–12V operation to prevent latchup. |
| 7 - OSC | External oscillator timing node | Accepts external capacitor to lower fOSC or external clock (via 1kΩ series resistor) to override internal oscillator. |
| 8 - V+ | Positive input supply | Primary power input; feeds internal regulator, oscillator, and switch drivers; max rating 13V absolute. |
Key Features
| Feature | Design Value |
|---|---|
| BOOST pin for higher switching frequency | Enables ~35kHz operation to cut output impedance by >50%, supporting 0.1µF capacitors in space-constrained designs. |
| LV pin for low-voltage optimization | Bypasses internal regulator when grounded, extending usable input range down to 1.5V while maintaining latchup immunity. |
| Guaranteed 96% power efficiency | Validated across full 0°C–70°C range at 5kΩ load, ensuring predictable thermal performance in sealed enclosures. |
| Improved SCR latchup protection | Active substrate bias control eliminates need for external diodes in most 5V/3.3V applications, simplifying BOM and layout. |
| Simple ±5V generation from +5V rail | Requires only two non-critical 10µF polarized electrolytics-no precision, low-ESR, or ceramic requirements-reducing cost and sourcing risk. |
Applications
| RS-232 Power Supply | Negative Supply for Data Acquisition |
|---|---|
|
Use Scenario: Generating ±12V or ±5V from a single 5V microcontroller supply to drive legacy RS-232 transceivers (e.g., MAX232 replacements). IC Role / Device Role / Timing Role: Charge-pump inverter providing isolated negative rail; no timing interface required-self-oscillating operation. Use Value: Eliminates need for inductive DC-DC converters or dual-output transformers, reducing EMI, board area, and component count in serial interface modules. |
Use Scenario: Providing clean –5V bias for op-amp input stages, ADC reference buffers, or sensor signal conditioning in portable test equipment. IC Role / Device Role / Timing Role: Low-noise negative voltage source; BOOST pin disabled to minimize switching noise coupling into analog signal paths. Use Value: Achieves <100mVpp ripple with 10µF/low-ESR capacitors, enabling 12-bit+ resolution without additional linear regulation. |
| Voltage Doubler for Positive Rail | Supply Splitter for Bipolar Op-Amp Rails |
|
Use Scenario: Deriving +10V from existing +5V logic supply to power rail-to-rail op-amps or DACs requiring extended headroom. IC Role / Device Role / Timing Role: Configured as voltage doubler using external diodes; operates at 10kHz base frequency with standard 10µF capacitors. Use Value: Delivers ≥9.5V at 10mA with <60Ω source impedance-sufficient for low-power analog signal chains without inductor-based solutions. |
Use Scenario: Splitting a +15V supply into ±7.5V rails for dual-supply op-amps in audio preamplifiers or active filters. IC Role / Device Role / Timing Role: Bidirectional charge-pump topology with shared CAP+ node; LV pin floating for stable mid-rail generation. Use Value: Enables symmetrical loading and <250Ω combined output resistance-adequate for 10mA op-amp quiescent current without rail collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ICL7660SCBAZ | Same pinout and function; rated for 0°C to +70°C but specified with tighter 100% tested supply current limits at 3V (26–100µA vs. ICL7660ACBA's 80–160µA typ/max at 5V). | Preferred where lowest possible quiescent current is critical in battery-powered devices operating near 3V. | Select ICL7660SCBAZ if design targets <100µA total system sleep current and uses 3V nominal supply. |
| MAX660CPA+ | Different pinout (8-pin PDIP); includes shutdown control (EN pin) and higher 80kHz max fOSC; requires 1µF capacitors for equivalent performance. | Suitable for designs needing on-demand power gating or higher-frequency operation to minimize capacitor size. | Choose MAX660CPA+ only if PCB layout allows PDIP footprint and EN functionality is required-ICL7660ACBA has no shutdown capability. |
Compared with ICL7660SCBAZ and MAX660CPA+, the ICL7660ACBA offers optimal balance of SOIC footprint, guaranteed 96% efficiency at 5kΩ, and proven latchup immunity without external diodes at 5V-making it ideal for cost-sensitive, space-constrained commercial instrumentation.
Availability
ICL7660ACBA is available at Aetrix Electronics and suitable for RS-232 interface modules, portable data acquisition systems, and bipolar op-amp power supplies requiring stable component supply with long-term manufacturability assurance.
Supply support for ICL7660ACBA 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
Intersil Corporation (acquired by Renesas Electronics in 2017) specialized in high-performance analog and power management ICs for industrial, communications, and computing markets.
The ICL7660A family was designed specifically for low-cost, low-noise, inductorless voltage conversion in commercial-grade instrumentation and interface circuits-emphasizing simplicity, reliability, and compatibility with standard electrolytic capacitors.
FAQ
What is the maximum input voltage the ICL7660ACBA can handle?
The ICL7660ACBA has an absolute maximum supply voltage rating of +13.0V, but its guaranteed operational range is +1.5V to +12V. Operating continuously above 12V risks parametric shift or premature failure, and the device is not characterized beyond 12V. For robust 12V designs, ensure transient spikes remain below 13V per Absolute Maximum Ratings table on page 3 of FN3179 Rev 7.01.
Does the ICL7660ACBA require external diodes for latchup protection?
The ICL7660ACBA does not require external diodes for latchup protection under standard 5V operation with proper LV pin handling. However, an external Schottky diode from VOUT (Pin 5) to CAP− (Pin 4) is required when V+ exceeds 5.5V *and* the input voltage rise rate exceeds 2V/µs-conditions commonly found in unregulated wall adapters or hot-plug scenarios per Do's and Don'ts section on page 8.
Can the ICL7660ACBA generate positive voltage doubling?
Yes, the ICL7660ACBA can be configured as a positive voltage doubler per Figure 18 in FN3179 Rev 7.01, delivering up to ~22.8V from a 12V input. This requires external diodes D1 and D2 plus pump/reservoir capacitors C1 and C2. Output source impedance remains ~60Ω at 10mA/5V input, making it suitable for moderate-current analog rails but not high-power digital loads.
What is the purpose of the LV pin on the ICL7660ACBA?
The LV (Low Voltage) pin on the ICL7660ACBA disables the internal series regulator when tied to GND, improving efficiency and enabling reliable start-up down to 1.5V input. For inputs above 3.5V, the LV pin must be left floating-connecting it to GND in this range causes destructive latchup per Do's and Don'ts item #2 on page 8 of FN3179 Rev 7.01.
Is the ICL7660ACBA RoHS compliant?
Yes, the ICL7660ACBA is RoHS compliant and Pb-free, using 100% matte tin (e3) termination finish compatible with both SnPb and Pb-free soldering processes. This is confirmed in Note 2 of the Ordering Information table on page 2 of FN3179 Rev 7.01, which states all listed Pb-free variants meet IPC/JEDEC J-STD-020 reflow requirements.
ICL7660ACBA 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
ICL7660ACBA FAQ
1.How can I place an order for ICL7660ACBA through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660ACBA 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 ICL7660ACBA reliable?
The price and inventory of ICL7660ACBA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660ACBA is usually 5 days.
3.What payment methods are accepted for ICL7660ACBA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660ACBA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660ACBA?
ICL7660ACBA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660ACBA 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 ICL7660ACBA?
For technical support, including ICL7660ACBA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660ACBA requirements.
6.How does Aetrix verify that ICL7660ACBA is sourced from the original manufacturer or authorized distributors?
All ICL7660ACBA 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 ICL7660ACBA meets industry standards.
7.What is the process for return or replacement of ICL7660ACBA?
All ICL7660ACBA units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660ACBA, 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 ICL7660ACBA part is unused and in its original packaging.
Return procedure for ICL7660ACBA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICL7660ACBA Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
