ICL7660S Super Voltage Converter

The ICL7660S Super Voltage Converter is a monolithic CMOS voltage conversion IC that guarantees significant performance advantages over other similar devices. It is a direct replacement for the industry standard ICL7660 offering an extended operating supply voltage range up to 12V, with lower supply current. No external diode is needed for the ICL7660S. In addition, a Frequency Boost pin has been incorporated to enable the user to achieve lower output impedance despite using smaller capacitors. All improvements are highlighted in the "Electrical Specifications" section on page 3. Critical parameters are guaranteed over the entire commercial, industrial and military temperature ranges.

The ICL7660S performs supply voltage conversion from positive to negative for an input range of 1.5V to 12V, resulting in complementary output voltages of -1.5V to -12V. Only 2 non-critical external capacitors are needed for the charge pump and charge reservoir functions. The ICL7660S can be connected to function as a voltage doubler and will generate up to 22.8V with a 12V input. It can also be used as a voltage multiplier or voltage divider.

The chip contains a series DC power supply regulator, RC oscillator, voltage level translator, and four output power MOS switches. The oscillator, when unloaded, oscillates at a nominal frequency of 10kHz for an input supply voltage of 5.0V. This frequency can be lowered by the addition of an external capacitor to the "OSC" terminal, or the oscillator may be over-driven by an external clock.

The "LV" terminal may be tied to GND to bypass the internal series regulator and improve low voltage (LV) operation. At medium to high voltages (3.5V to 12V), the LV pin is left floating to prevent device latchup.

ICL7660S 特点

Guaranteed Lower Max Supply Current for All Temperature Ranges
Wide Operating Voltage Range 1.5V to 12V
100% Tested at 3V
No External Diode Over Full Temperature and Voltage Range
Boost Pin (Pin 1) for Higher Switching Frequency
Guaranteed Minimum Power Efficiency of 96%
Improved Minimum Open Circuit Voltage Conversion Efficiency of 99%
Improved SCR Latchup Protection
Simple Conversion of +5V Logic Supply to ±5V Supplies
Simple Voltage Multiplication VOUT = (-)nVIN
Easy to Use - Requires Only 2 External Non-Critical Passive Components
Improved Direct Replacement for Industry Standard ICL7660 and Other Second Source Devices
Pb-Free Available (RoHS Compliant)

ICL7660S 应用

Simple Conversion of +5V to ±5V Supplies
Voltage Multiplication VOUT = ±nVIN
Negative Supplies for Data Acquisition Systems and Instrumentation
RS232 Power Supplies
Supply Splitter, VOUT = ±VS/2

ICL7660S 芯片订购指南

芯片型号	产品状态	温度范围	封装尺寸图	潮湿敏感度等级MSL	美元价格US $
ICL7660SCBA	量产	民用级	8 Ld SOIC	1	0.86
ICL7660SCBA-T	量产	民用级	8 Ld SOIC T +R	1	0.89
ICL7660SCBAZ	量产	民用级	8 Ld SOIC	1	0.71
ICL7660SCBAZ-T	量产	民用级	8 Ld SOIC T +R	1	0.74
ICL7660SCPA	量产	民用级	8 Ld PDIP	N/A	0.96
ICL7660SCPAZ	量产	民用级	8 Ld PDIP	N/A	0.8
ICL7660SIBA	量产	工业级	8 Ld SOIC	1	0.96
ICL7660SIBAT	量产	工业级	8 Ld SOIC T +R	1	0.99
ICL7660SIBAZ	量产	工业级	8 Ld SOIC	1	0.8
ICL7660SIBAZT	量产	工业级	8 Ld SOIC T +R	1	0.82
ICL7660SIPA	量产	工业级	8 Ld PDIP	N/A	1.04
ICL7660SIPAZ	量产	工业级	8 Ld PDIP	N/A	0.87
ICL7660SCBAZA	停产	民用级	8 Ld SOIC	1	N/A
ICL7660SCBAZA-T	停产	民用级	8 Ld SOIC T +R	1	N/A
ICL7660SIBAZA	停产	工业级	8 Ld SOIC	1	N/A
ICL7660SIBAZAT	停产	工业级	8 Ld SOIC T +R	1	N/A