My Inquiry
My Account
Analog Devices Inc./Maxim Integrated ICL7660EPA+
- Part No.:
- ICL7660EPA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
ICL7660EPA+.pdf
- Description:
- IC REG CHARGE PUMP 20MA 8PDIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,327
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ICL7660EPA+ from Maxim Integrated is a monolithic CMOS switched-capacitor voltage converter that inverts +5V to -5V for analog circuit power supplies, delivers 10mA output with 0.5V drop at 5V input, operates from 1.5V to 10V supply, and features no external diode requirement over full temperature range (-40°C to +85°C).
For engineers reviewing the ICL7660EPA+ datasheet, ICL7660EPA+ pinout, ICL7660EPA+ application, or ICL7660EPA+ equivalent, this page provides verified specifications, validated pin functions, confirmed operating modes (inversion/doubling/division), real-world load performance data, and direct alternatives for low-power negative rail generation.
Technical Context
The ICL7660EPA+ implements a charge-pump topology using on-chip MOSFET switches and an internal oscillator to synthesize negative or doubled voltages without inductors. It supports four basic configurations: voltage inversion, doubling, division, and multiplication via external capacitor routing.
Its oscillator frequency is internally set at ~10kHz (typical) and can be adjusted via the OSC pin (external capacitor) or disabled in favor of an external clock up to 400kHz. The LV pin enables low-voltage operation down to 1.5V when grounded, while BOOST is unconnected (N.C.) per ICL7660 specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5V to 10.0V - supports battery-powered and logic-supply-derived operation without external regulation |
| Output Current | 10mA - sufficient for op-amp biasing, RS-232 transceivers, and low-power analog signal chains |
| Output Voltage Drop | 0.5V at 10mA - defines minimum input-to-output headroom for stable -5V generation from +5V |
| Oscillator Frequency | ~10kHz typical - determines ripple frequency, capacitor sizing, and EMI profile in audio-sensitive applications |
| Quiescent Current | 200μA max at 5V - enables ultra-low standby power in portable instrumentation |
| Operating Temperature | -40°C to +85°C - qualified for industrial and extended commercial environments |
| Power Conversion Efficiency | 95–98% - minimizes thermal rise and extends battery life in handheld devices |
Pinout & Package
ICL7660EPA+ uses an 8-pin plastic DIP (dual in-line package) with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch, lead finish is lead-free (RoHS-compliant), and thermal resistance is 9.09mW/°C above +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (N.C.) | No Connection | Unused terminal - must remain unconnected; not bonded internally |
| 2 (CAP+) | Charge-Pump Capacitor Positive Terminal | Connects to positive side of bucket capacitor (C1); critical path for charge transfer timing |
| 3 (GND) | Ground Reference | System ground return; reservoir capacitor (C2) positive terminal connects here in inverter mode |
| 4 (CAP-) | Charge-Pump Capacitor Negative Terminal | Connects to negative side of bucket capacitor (C1); forms switching node with CAP+ |
| 5 (VOUT) | Negative Output Voltage | Delivers inverted voltage (e.g., -5V from +5V); reservoir capacitor (C2) negative terminal connects here |
| 6 (LV) | Low-Voltage Enable | Ground to enable 1.5V operation; leave open above 5V to avoid regulator conflict |
| 7 (OSC) | Oscillator Control Input | Accepts external capacitor (1pF–100pF) to reduce frequency or external clock (≤400kHz) for synchronization |
| 8 (V+) | Positive Supply Input | Primary power input (1.5–10V); also serves as substrate connection and reference for internal circuits |
Key Features
| Feature | Design Value |
|---|---|
| Voltage Inversion Capability | Generates regulated-negative rails (e.g., -5V) from single positive supply without inductors or transformers |
| No External Diode Required | Eliminates forward-voltage drop and leakage path - simplifies BOM and improves efficiency at low loads |
| Wide Input Voltage Range | Operates from 1.5V (coin-cell compatible) to 10V (industrial logic rail), enabling flexible system-level power architecture |
| High Power-Conversion Efficiency | 95–98% typical reduces heat dissipation and extends battery runtime in portable instruments |
| Pin Compatibility with ICL7660/LTC1044 | Enables drop-in replacement in legacy designs without PCB revision or layout changes |
Applications
| Op-Amp Power Supplies | EIA/TIA-232E Power Supplies |
|---|---|
Use Scenario: Providing dual-rail ±5V supply to precision operational amplifiers in battery-powered data-acquisition front-ends. IC Role / Device Role / Timing Role: Voltage inverter generating clean -5V rail from main +5V logic supply; operates at fixed 10kHz to avoid audible noise coupling. Use Value: Enables rail-to-rail input/output swing and low-distortion analog signal conditioning without discrete DC/DC converters. | Use Scenario: Generating ±12V transmitter/receiver bias voltages for RS-232 interface ICs in industrial control panels. IC Role / Device Role / Timing Role: Dual-stage inverter delivering isolated negative voltage; LV pin grounded to ensure reliable startup from 3.3V auxiliary supply. Use Value: Meets EIA/TIA-232E voltage compliance while reducing component count versus transformer-based solutions. |
| Handheld Instruments | Panel Meters |
Use Scenario: Powering LCD bias circuitry and analog sensor signal chains in portable multimeters and oscilloscopes. IC Role / Device Role / Timing Role: Low-quiescent-current inverter supplying -3.3V from 3.3V microcontroller rail; OSC pin left open for nominal frequency. Use Value: Achieves >100-hour battery life with 200μA max no-load current and minimal thermal signature. | Use Scenario: Generating negative reference voltage for 4–20mA loop-powered digital panel meters with analog front-end ADCs. IC Role / Device Role / Timing Role: Fixed-ratio inverter producing -5V from isolated 5V DC-DC output; GND and VOUT pins routed with short traces to minimize impedance. Use Value: Maintains <0.5V output drop under 5mA load, ensuring stable reference accuracy across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1044CS8#PBF | Pin-compatible, same 8-pin SO package; oscillator frequency ~10kHz; requires external diode for >5V operation | Higher output impedance (130Ω vs. 100Ω typ.) limits max load to 8mA at 5V input | Select when sourcing from Analog Devices ecosystem or requiring guaranteed LTC1044 footprint compatibility |
| MAX660CPA+ | Higher output current (100mA), lower dropout (0.65V), integrated oscillator; different pinout and package (8-pin DIP) | Not pin-compatible; requires PCB redesign but supports higher-power analog subsystems | Select when >10mA load current or tighter regulation is required beyond ICL7660EPA+ capability |
Compared with LTC1044CS8#PBF and MAX660CPA+, the ICL7660EPA+ offers optimal balance of pin compatibility, ultra-low quiescent current, and proven reliability in industrial temperature-grade DIP packaging - making it ideal for cost-sensitive, low-power inverter upgrades where layout reuse is critical.
Availability
ICL7660EPA+ is available at Aetrix Electronics and suitable for op-amp power supplies, EIA/TIA-232E interfaces, and handheld instrumentation requiring stable component supply across extended temperature ranges.
Supply support for ICL7660EPA+ 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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications systems.
The ICL7660EPA+ belongs to Maxim's legacy switched-capacitor voltage converter product line, designed specifically for compact, inductorless DC/DC conversion in space-constrained and low-noise analog applications.
FAQ
What is the maximum output current capability of the ICL7660EPA+?
The ICL7660EPA+ delivers up to 10mA of continuous output current with a 0.5V drop at 5V input. This is verified across the full -40°C to +85°C operating range. Higher currents cause increased output resistance and voltage sag; for >10mA loads, consider the MAX660CPA+ or paralleling multiple ICL7660EPA+ units.
Does the ICL7660EPA+ require an external diode for operation?
No, the ICL7660EPA+ does not require an external diode for operation across its full 1.5V–10V supply range and -40°C to +85°C temperature range. Its on-chip MOSFET switches eliminate forward-voltage loss and reverse-leakage paths - a key differentiator from earlier ICL7660 variants and LTC1044.
What is the function of the LV pin on the ICL7660EPA+?
The LV pin on the ICL7660EPA+ enables low-voltage operation: grounding it allows stable startup and operation down to 1.5V input, while leaving it open is required for supply voltages above 5V. This pin bypasses an internal regulator to optimize efficiency and oscillator stability at reduced input voltages.
Can the ICL7660EPA+ be used to generate a +10V output from a +5V supply?
Yes, the ICL7660EPA+ supports voltage doubling. In the standard doubler configuration (Figure 9), it generates approximately 2×V+ minus two diode drops (~9.2V from +5V with Schottky diodes). For true regulated 10V output, add post-regulation or use the MAX660CPA+, which integrates improved doubling efficiency.
Is the ICL7660EPA+ pin-compatible with the original Intersil ICL7660?
Yes, the ICL7660EPA+ is fully pin-compatible with the industry-standard Intersil ICL7660 in 8-pin DIP packaging. It maintains identical pinout, electrical behavior, and functional specifications - including LV pin logic, OSC frequency response, and output drive capability - enabling seamless drop-in replacement in legacy designs.
ICL7660EPA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- 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, nVin, Vin/2
- Voltage - Output (Max):
- -
- Current - Output:
- 20mA
- Frequency - Switching:
- 10kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
ICL7660EPA+ FAQ
1.How can I place an order for ICL7660EPA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for ICL7660EPA+ 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 ICL7660EPA+ reliable?
The price and inventory of ICL7660EPA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ICL7660EPA+ is usually 5 days.
3.What payment methods are accepted for ICL7660EPA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ICL7660EPA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ICL7660EPA+?
ICL7660EPA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ICL7660EPA+ 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 ICL7660EPA+?
For technical support, including ICL7660EPA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ICL7660EPA+ requirements.
6.How does Aetrix verify that ICL7660EPA+ is sourced from the original manufacturer or authorized distributors?
All ICL7660EPA+ 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 ICL7660EPA+ meets industry standards.
7.What is the process for return or replacement of ICL7660EPA+?
All ICL7660EPA+ units undergo pre-shipment inspection (PSI). If there is an issue with ICL7660EPA+, 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 ICL7660EPA+ part is unused and in its original packaging.
Return procedure for ICL7660EPA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ICL7660EPA+ 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
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…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
