My Inquiry
My Account
Renesas ICL7660CPAZ
- Part No.:
- ICL7660CPAZ
- Manufacturer:
- Renesas
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7660CPAZ.pdf
- Description:
- IC REG CHARG PUMP INV 45MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:776
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICL7660CPAZ from Intersil (now Renesas) is a monolithic CMOS charge-pump voltage converter IC that generates regulated negative output voltages from a positive input supply. It operates across 1.5V–12V input, delivers up to –12V output, achieves ≥96% power efficiency at 5kΩ load, supports 10kHz nominal oscillator frequency, and requires only two external non-critical 10µF capacitors. It is widely used in RS-232 power supplies and data acquisition systems needing dual-rail ±5V from single +5V.
For engineers reviewing the ICL7660CPAZ datasheet, ICL7660CPAZ pinout, ICL7660CPAZ application, or ICL7660CPAZ equivalent, key selection criteria include its LV pin control for low-voltage operation, BOOST pin capability to raise switching frequency by 3.5×, guaranteed 120Ω max output source resistance at 20mA over 0°C to +70°C, and Pb-free PDIP-8 packaging compliant with RoHS and wave-solder compatible.
Technical Context
The ICL7660CPAZ 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 two-phase charge-pump topology. Its substrate bias logic network actively senses VOUT to dynamically adjust switch substrates and prevent latchup-critical during startup and short-circuit conditions.
Operation relies on capacitor charge transfer between CAP+ and CAP− terminals: during phase one, C1 charges to V+ via S1/S3; during phase two, C1 discharges into C2 via S2/S4 to generate –VOUT. The BOOST pin (Pin 1) increases oscillator drive current to raise fOSC, directly lowering output impedance without larger capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5V to 12V - supports battery-powered (1.5V alkaline) and industrial (12V rail) inputs without external regulation |
| Output Voltage | –1.5V to –12V - complementary negative output matches input magnitude, enabling true ±VS splitting |
| Oscillator Frequency | 10kHz (nominal, V+ = 5V, BOOST open); up to 35kHz (BOOST = V+) - higher fOSC reduces output impedance and ripple |
| Power Efficiency | ≥96% at RL = 5kΩ - minimizes heat generation and extends battery life in portable instrumentation |
| Output Source Resistance | ≤120Ω at IOUT = 20mA, 0°C to +70°C - defines worst-case voltage droop under load; lower than legacy ICL7660 |
| Supply Current | ≤180µA over full commercial temperature range - enables ultra-low-quiescent designs in always-on sensor nodes |
| LV Pin Function | GND connection enables sub-3.5V operation; floating above 3.5V prevents latchup - critical for safe dual-mode voltage range use |
Pinout & Package
ICL7660CPAZ is housed in an 8-lead plastic DIP (PDIP) package per JEDEC outline E8.3, RoHS-compliant and qualified for through-hole wave soldering only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (BOOST) | Oscillator frequency boost control | Connecting to V+ raises fOSC ~3.5×, reducing output impedance and enabling smaller external capacitors |
| 2 (CAP+) | Charge pump capacitor connection | Anode of pump capacitor C1; switched between V+ and VOUT to transfer charge |
| 3 (GND) | Ground reference | System ground return; LV pin must not exceed GND potential to avoid latchup |
| 4 (CAP−) | Reservoir capacitor connection | Cathode of reservoir capacitor C2; holds inverted output voltage; Schottky diode may be added VOUT→CAP− for latchup immunity |
| 5 (VOUT) | Negative output terminal | Delivers regulated –V+; must remain ≤ GND to prevent substrate forward-bias and device failure |
| 6 (OSC) | Oscillator timing node | Internal RC oscillator output; external capacitor lowers fOSC; external clock (via 1kΩ series resistor) overrides internal timing |
| 7 (LV) | Low-voltage mode enable | Tie to GND for 1.5V–3.5V operation (bypasses internal regulator); leave floating for 3.5V–12V to avoid latchup |
| 8 (V+) | Positive input supply | Main power input; absolute max 13V; rise rate >2V/µs requires 2.2µF bypass to GND if source impedance >25Ω |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed 99% open-circuit voltage conversion efficiency | Ensures minimal voltage loss when unloaded-critical for precision reference and high-impedance analog circuits |
| BOOST pin for higher switching frequency | Enables 3.5× fOSC increase without external clock, reducing output impedance and allowing 0.1µF capacitors in space-constrained designs |
| LV pin for optimized low-voltage operation | Disables internal regulator below 3.5V, extending usable input range down to 1.5V while maintaining latchup immunity |
| Integrated SCR latchup protection | Active substrate bias control eliminates need for external diodes in most applications, simplifying BOM and layout |
| Pb-free, RoHS-compliant PDIP-8 package | Meets environmental compliance requirements and supports wave-solder assembly without reflow compatibility concerns |
Applications
| RS-232 Power Supply | Negative Supply for Data Acquisition |
|---|---|
Use Scenario: Generating ±12V rails from a single +5V microcontroller supply to drive legacy RS-232 transceivers. IC Role / Device Role / Timing Role: Charge-pump voltage inverter providing isolated negative rail; no timing synchronization required beyond internal oscillator. Use Value: Eliminates need for external inductors or transformers, enabling compact, low-noise, EMI-free serial interface power in embedded controllers. | Use Scenario: Providing clean –5V bias for op-amp input stages and ADC reference buffers in portable test equipment. IC Role / Device Role / Timing Role: Precision negative voltage source with <120Ω output impedance; stable under dynamic load steps typical of multiplexed sampling. Use Value: Maintains signal integrity and common-mode rejection ratio (CMRR) by minimizing ground bounce and supply coupling in high-resolution analog front-ends. |
| Supply Splitter (±VS) | Low-Voltage Instrumentation Bias |
Use Scenario: Converting a +9V battery supply into symmetrical ±4.5V rails for rail-to-rail op-amps in handheld medical sensors. IC Role / Device Role / Timing Role: Bidirectional voltage splitter using shared charge-pump driver; no external clock needed. Use Value: Doubles effective battery utilization by enabling true bipolar operation without doubling component count or board area. | Use Scenario: Powering low-noise amplifiers in IoT gas sensors operating from 1.5V alkaline cells. IC Role / Device Role / Timing Role: Ultra-low-input-voltage inverter (1.5V min) with LV pin grounded to bypass regulator and maximize efficiency. Use Value: Extends operational lifetime by sustaining –1.5V output at <180µA quiescent current-enabling multi-year battery life in maintenance-free deployments. |
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 PDIP-8 package, but rated for –40°C to +85°C industrial temp range; slightly higher max supply current (200µA at –55°C to +125°C) | Required for extended-temperature industrial or automotive environments where ICL7660CPAZ's 0°C to +70°C range is insufficient | Select ICL7660SCPAZ when ambient operating temperature exceeds +70°C or drops below 0°C |
| MAX660CPA+ | Pin-compatible upgrade with 125kHz max fOSC, 30µA typical I+, and integrated oscillator trimming; requires no BOOST pin configuration | Better suited for high-frequency, low-ripple, or ultra-low-power applications where ICL7660CPAZ's 35kHz max fOSC or 180µA max I+ are limiting | Choose MAX660CPA+ when design demands lower noise, tighter regulation, or reduced external component count |
Compared with ICL7660CPAZ, ICL7660SCPAZ extends temperature capability without changing footprint or circuit design, while MAX660CPA+ offers superior efficiency and frequency agility at the cost of higher unit price and different oscillator architecture.
Availability
ICL7660CPAZ is available at Aetrix Electronics and suitable for RS-232 power supplies, portable data acquisition systems, and low-voltage instrumentation requiring stable component supply across commercial temperature ranges.
Supply support for ICL7660CPAZ 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 ICL7660CPAZ belongs to Renesas' legacy Super Voltage Converter product line, designed specifically for low-cost, inductorless DC-DC voltage inversion in space- and cost-constrained embedded systems.
FAQ
What is the maximum input voltage rating for the ICL7660CPAZ?
The ICL7660CPAZ has an absolute maximum supply voltage rating of +13.0V. Its specified operating input voltage range is 1.5V to 12V. Exceeding 13V risks permanent damage due to internal junction breakdown. For reliable long-term operation, keep V+ ≤ 12V under all conditions including transients and ripple, as confirmed in the Absolute Maximum Ratings table on page 3 of FN3179 Rev 7.01. The ICL7660CPAZ maintains performance across this full range without external regulation.
Can the ICL7660CPAZ generate positive voltage doubling?
Yes, the ICL7660CPAZ can be configured as a positive voltage doubler using external diodes and capacitors, as shown in Figure 18 of FN3179 Rev 7.01. In this mode, it delivers up to 22.8V output from a 12V input (VOUT ≈ 2V+ − 2VF). The ICL7660CPAZ itself remains a negative voltage converter-the positive doubling relies on external passive components routing its internal charge-pump action. This configuration retains the same 120Ω max output source resistance specification at 10mA load, as verified in the Electrical Specifications section.
How does the BOOST pin affect the ICL7660CPAZ oscillator frequency?
The BOOST pin (Pin 1) of the ICL7660CPAZ controls internal oscillator drive strength: when left open or grounded, fOSC is ~10kHz (V+ = 5V); when tied to V+, fOSC increases to ~35kHz. This 3.5× frequency boost directly lowers output impedance and ripple, enabling use of smaller 0.1µF external capacitors instead of 10µF-critical for surface-mount miniaturization. This behavior is measured and guaranteed per the Electrical Specifications table on page 3 of FN3179 Rev 7.01.
Is an external Schottky diode required for reliable operation of the ICL7660CPAZ?
An external Schottky diode from VOUT to CAP− is recommended only when V+ > 5V and the input voltage rise rate exceeds 2V/µs, as stated in the "Do's and Don'ts" section (page 8, item 6) of FN3179 Rev 7.01. It prevents latchup caused by forward-biasing Q4's body diode. For standard 5V operation with controlled slew rates, the ICL7660CPAZ functions reliably without any external diode, as confirmed by its "no external diode required" claim in the Absolute Maximum Ratings footnote.
What is the purpose of the LV pin on the ICL7660CPAZ?
The LV pin on the ICL7660CPAZ disables the internal series regulator when tied to GND, enabling stable operation down to 1.5V input-essential for single-cell battery applications. When V+ > 3.5V, the LV pin must be left floating to prevent latchup and ensure robust anti-latchup protection across the full 0°C to +70°C range. This dual-mode behavior is explicitly defined in the Functional Description (page 8) and Electrical Specifications (page 3) of FN3179 Rev 7.01, and applies identically to the ICL7660CPAZ.
ICL7660CPAZ 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):
- 10V
- Voltage - Output (Min/Fixed):
- -Vin, 2Vin
- Voltage - Output (Max):
- -
- Current - Output:
- 45mA
- Frequency - Switching:
- 10kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7660CPAZ FAQ
1.How can I place an order for ICL7660CPAZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660CPAZ 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 ICL7660CPAZ reliable?
The price and inventory of ICL7660CPAZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660CPAZ is usually 5 days.
3.What payment methods are accepted for ICL7660CPAZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660CPAZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660CPAZ?
ICL7660CPAZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660CPAZ 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 ICL7660CPAZ?
For technical support, including ICL7660CPAZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660CPAZ requirements.
6.How does Aetrix verify that ICL7660CPAZ is sourced from the original manufacturer or authorized distributors?
All ICL7660CPAZ 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 ICL7660CPAZ meets industry standards.
7.What is the process for return or replacement of ICL7660CPAZ?
All ICL7660CPAZ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660CPAZ, 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 ICL7660CPAZ part is unused and in its original packaging.
Return procedure for ICL7660CPAZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICL7660CPAZ 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…
