ICL7662EBA

The ICL7662EBA is a CMOS switched‑capacitor voltage inverter (charge pump) from Intersil. It creates a negative rail from a single positive supply without inductors, handy for single‑supply analog circuitry.
How it works: an internal oscillator drives a flying capacitor to pump charge and a storage capacitor to hold the negative output. Vout becomes negative with respect to ground. The negative rail magnitude is roughly the same as the input under light load; under load it drops based on capacitor values and current drawn.
Key points:
- Input range ≈ 1.5–5.5 V; produces a negative output with no external inductors.
- Requires two external capacitors (flying and storage).
- Suitable for low-current applications; quiescent current is modest.
Package: 8-pin (EBA variant).
Applications: generate small negative rail for op-amps, ADCs, LCD bias from a single supply.
Limitations: not intended for high current; output ripple under load; ensure proper bypassing and appropriate capacitor sizing. See the datasheet for exact pinout and recommendations.

ICL7662EBA is an inverting charge-pump DC-DC converter. Common equivalents:
- MAX660 family (MAX660, MAX661, MAX662)
- LTC1043 / LTC1044 (Linear Tech)
- LMC7660 / LMC7660S (Texas Instruments)
- ICL7660 / ICL7662 variants (same family)
Note: pinouts, voltage/current specs vary; verify data sheets before replacement.

Here are the key features of the ICL7662EBA:
- Negative-voltage generator (inverter) based on a switched-capacitor charge pump; no inductor required.
- Single-supply operation from 3 V to about 12 V.
- Produces a negative output rail (approximately -Vin) using two external capacitors.
- External capacitors: typically 1 µF to 10 µF for C1/C2.
- Capacitor-driven output current capability (tens of milliamps, load-dependent).
- Low quiescent current; suitable for battery-powered applications.
- 8-pin package (EBA variant) and suitable for standard DIP-8/SO-8 footprints; wide operating temperature range (around -40°C to +85°C).

- Pin count: 8 pins (8-pin package such as DIP8/SOIC8).
- Function: Switched-capacitor inverting voltage converter that generates a negative rail from a single positive supply. Uses external capacitors on C1± and C2± with inputs Vin and output Vout to create a negative voltage.

- Manufacturer: Intersil (now part of Renesas Electronics).
- What kind of company: A global semiconductor company that designs and manufactures analog, mixed-signal, and power-management ICs.

ICL7662EBA is a switched-capacitor voltage inverter that creates a negative rail from a single positive supply. Common applications include:
- Providing -V supply for op-amps, comparators, ADCs/DACs, and instrumentation amplifiers in battery-powered equipment.
- Biasing and reference generation in precision analog circuits.
- Supporting peak detectors, active rectifiers, and sample-and-hold circuits.
- Use in low-cost, space-constrained devices such as handheld meters, sensors, and small audio/instrumentation front-ends.
- LCD biasing or other small negative-rail needs, all without inductors—using external flying capacitors.

8-pin package (DIP-8). There is also an equivalent 8-pin SOIC version; the EBA suffix refers to the DIP‑8 variant.