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MAX860

Maxim
Part Number MAX860
Manufacturer Maxim
Description Switched-Capacitor Voltage Converters
Published May 2, 2005
Detailed Description 19-0239; Rev 1; 11/96 50mA, Frequency-Selectable, Switched-Capacitor Voltage Converters _______________General Descript...
Datasheet PDF File MAX860 PDF File

MAX860
MAX860

Overview
19-0239; Rev 1; 11/96 50mA, Frequency-Selectable, Switched-Capacitor Voltage Converters _______________General Description The MAX860/MAX861 charge-pump voltage converters invert input voltages ranging from +1.
5V to +5.
5V, or double input voltages ranging from +2.
5V to +5.
5V.
Because of their high switching frequencies, these devices use only two small, low-cost capacitors.
Their 50mA output makes switching regulators unnecessary, eliminating inductors and their associated cost, size, and EMI.
Greater than 90% efficiency over most of the load-current range, combined with a typical operating current of only 200µA (MAX860), provides ideal performance for both battery-powered and board-level voltage-conversion applications.
A frequency-control (FC) pin provides three switchingfrequencies to optimize capacitor size and quiescent current and to prevent interference with sensitive circuitry.
Each device has a unique — — — – set of three available frequencies.
A shutdown (SHDN) pin reduces current consumption to less than 1µA.
The MAX860/MAX861 are suitable for use in applications where the ICL7660 and MAX660's switching frequencies are too low.
The MAX860/MAX861 are available in 8-pin µMAX and SO packages.
____________________________Features o 8-Pin, 1.
11mm High µMAX Package o Invert or Double the Input Supply Voltage o Three Selectable Switching Frequencies o High Frequency Reduces Capacitor Size o 87% Efficiency at 50mA o 200µA Quiescent Current (MAX860) o 1µA Shutdown Supply Current o 600mV Voltage Drop at 50mA Load o 12Ω Output Resistance MAX860/MAX861 ______________Ordering Information PART MAX860ISA MAX860IUA MAX860C/D MAX860ESA MAX860MJA MAX861ISA MAX861IUA MAX861C/D MAX861ESA MAX861MJA TEMP.
RANGE -25°C to +85°C -25°C to +85°C 0°C to +70°C -40°C to +85°C -55°C to +125°C -25°C to +85°C -25°C to +85°C 0°C to +70°C -40°C to +85°C -55°C to +125°C PIN-PACKAGE 8 SO 8 µMAX Dice* 8 SO 8 CERDIP† 8 SO 8 µMAX Dice* 8 SO 8 CERDIP† ________________________Applications Po...


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