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ICL7660SCPAZ

Charge Pump Switching Regulator IC Positive or Negative Fixed -Vin, 2Vin 1 Output 45mA 8-DIP (0.300", 7.62mm)

Manufacturer:

Renesas Technology Corp
Mfr.Part #:

ICL7660SCPAZ
Datasheet:

ICL7660SCPAZ Datasheet (PDF)
Function:

Ratiometric
Output Configuration:

Positive or Negative
Topology:

Charge Pump
Output Type:

Fixed
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ICL7660SCPAZ General Description

The ICL7660S and ICL7660A Super Voltage Converters are monolithic CMOS voltage conversion ICs that guarantee significant performance advantages over other similar devices. They are direct replacements for the industry standard ICL7660 offering an extended operating supply voltage range up to 12V, with lower supply current. 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 of the datasheet. Critical parameters are guaranteed over the entire commercial and industrial temperature ranges. The ICL7660S and ICL7660A perform supply voltage conversions from positive to negative for an input range of 1. 5V to 12V, resulting in complementary output voltages of -1. 5V to -12V. Only two non-critical external capacitors are needed, for the charge pump and charge reservoir functions. The ICL7660S and ICL7660A can be connected to function as a voltage doubler and will generate up to 22. 8V with a 12V input. They can also be used as a voltage multipliers or voltage dividers. Each 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. In some applications, an external Schottky diode from V_OUT to CAP- is needed to guarantee latchup free operation (see Do’s and Don’ts section on page 8 of the datasheet).

Key Features

Guaranteed Lower Max Supply Current for All Temperature Ranges
Wide Operating Voltage Range: 1.5V to 12V
100% Tested at 3V
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 V_OUT = (-)nV_IN
Easy to Use; Requires Only Two External Non-Critical Passive Components
Improved Direct Replacement for Industry Standard ICL7660 and Other Second Source Devices
Pb-Free Available (RoHS Compliant)

Application

Data Acquisition
EIA/TIA-232E and EIA/TIA-562 Power Supplies
Handheld Instruments (PDAs, Palmtops)
Op-Amp Power Supplies
Panel Meters
Personal Communications Equipment
Portable Telephones

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	-
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)	12V	Voltage - Output (Min/Fixed)	-Vin, 2Vin
Voltage - Output (Max)	-	Current - Output	45mA
Frequency - Switching	10kHz ~ 35kHz	Synchronous Rectifier	No
Operating Temperature	0°C ~ 70°C (TA)	Mounting Type	Through Hole
Base Product Number	ICL7660