SP6661 is a high frequency 200mA charge pump inverter or doubler from Sipex Corporation, which features 92% power efficiency, selectable 120kHz/900kHz oscillator frequency, low output resistance, low voltage battery operation, high output current, low profile solution and 1.5V inverter startup guaranteed. It is ideal for 3.6V lithium ion battery or 5.0V input and is pin-compatible with the high-current upgrade of the ICL7660 and 660 industry standard, with the smallest package available for the 660 industry standard – 8 pin µSOIC.
The SP6661 is a CMOS DC‑DC monolithic voltage converter that can operate as a voltage inverter (‑1.5 V to ‑5.0 V) or a positive voltage doubler (+5.0 V to +10.0 V). It is designed for battery‑powered and board‑level applications, offering typical 3 mA quiescent current and high efficiency (>90 %) across its load range.
Key features include selectable oscillator frequencies (70 kHz‑170 kHz or 500 kHz‑1.25 MHz), 200 mA continuous output current, low‑voltage startup (1.5 V), and a compact 8‑pin NSOIC/pSOIC package. The datasheet provides electrical specifications, pin assignments, capacitor selection guidance, and ordering information.
| Continuous Output Current | 200 mA |
|---|---|
| Power Efficiency at 100 mA | 92 % |
| Oscillator Frequency (typical) | 70 kHz – 170 kHz (low‑freq) / 500 kHz – 1.25 MHz (high‑freq) |
| Supply Voltage Range (Inverter) | 1.5 V – 5.3 V |
| Start‑Up Voltage | 0.93 V |
The device can deliver up to 200 mA continuous output current.
At 100 mA the SP6661 achieves about 92 % power efficiency.
The inverter circuit operates with a supply voltage from 1.5 V to 5.3 V.