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ME7660 Dataheets PDF



Part Number ME7660
Manufacturers Micro One
Logo Micro One
Description Charge Pump DC-DC Voltage Converter
Datasheet ME7660 DatasheetME7660 Datasheet (PDF)

ME 7660 ME7660 Charge Pump DC-DC Voltage Converter Introduction Me7660 is a charge pump dc-to-dc voltage converter using AL-gate CMOS technology and optimization design. It converters a +1.5V to +10V input to a corresponding -1.5V to -10V output using only two external capacitors, eliminating inductors and their associated cost, size and EMI. The on-board oscillator operates at a nominal frequency of 10KHZ. Operation below 10 KHZ (for lower supply current applications) is possible by connecting .

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ME 7660 ME7660 Charge Pump DC-DC Voltage Converter Introduction Me7660 is a charge pump dc-to-dc voltage converter using AL-gate CMOS technology and optimization design. It converters a +1.5V to +10V input to a corresponding -1.5V to -10V output using only two external capacitors, eliminating inductors and their associated cost, size and EMI. The on-board oscillator operates at a nominal frequency of 10KHZ. Operation below 10 KHZ (for lower supply current applications) is possible by connecting an external capacitor from OSC to ground. Features: ! Converts +5V Logic supply to + 5V ! Wide input voltage range: 1.5V~10V ! Efficient voltage conversion: 99.9% ! Good power efficiency: 98% ! Low power supply: 50uA @5Vin ! Easy to use: only two external capacitors required ! 8-pin DIP and 8-pin small outline packages are available ! Compatible with RS232 negative power supply standard ! High ESD protection: up to 3kV ! No Dx diode needed for high voltage operation Pin Configuration Packages: 8-pin DIP and 8-pin SOIC 1(12) ME 7660 Pin Description Pin No. Symbol 1 NC 2 CAP+ 3 GND 4 CAP5 Vout 6 Low Voltage 7 OSC 8 V+ Description No connection Connecting external capacitor (+) pin Ground Pin Connecting external capacitor (-) pin Voltage output pin Low voltage selection pin Connecting oscillation capacitor pin Power supply pin Functional Block Diagram 2(12) Absolute Maximum Rating ! Supply Voltage: +10.5V ! LV and OSC Inputs Voltage: -0.3V (V++0.3V) for V+<5.5V (V+-5.5V) (V++0.3V) for V+>5.5V ! Current Into LV: 20µA V+>3.5V ! Output Short Duration (Vsupply 5.5V): ! Power Dissipation TA 75 Plastic DIP 730mV SOIC 470mV ME 7660 Electrical Characteristics:(V+=5V,COSC=0) Test circuit is at page 5 Symbol Item Conditions Min Typ Max Unit I+ V+H V+L ROUT FOSC PEFF VOUTEFF Supply Current Supply Voltage, High Supply Voltage, Low Output Resistance Oscillator Frequency Power Efficiency Voltage Conversion Efficiency RL= LV Open LV to GND IOUT=20mA TA=25 IOUT=3mA V+=2V TA=25 Pin 7 open RL=5k RL= — 60 3— 1.5 — 110 220 — 10 90 98 98 99 9 120 10 4 — — — µA V V kHz % % 3(12) Typical Performance Characteristics 10000 Output Resistance vs.Supply Voltage ME 7660 Output Resistance(Ohm) 1000 100 Output Load(Ohm) 10 0 1 130 120 110 100 90 80 0 234567 Supply Voltage(V) Output Load vs. Load Current+(V+=+5V) 5 10 15 20 Load Current(mA) 8 25 4(12) Output Voltage(V) ME 7660 Output Voltage vs. Output Current (V+=+5V) 1 0 -1 -2 -3 -4 -5 0 5 10 15 20 25 30 Output Current (mA) Power Conversion Efficiency vs.Load Current (V+=+5V) 100 90 80 70 60 50 40 30 20 10 0 5 10 15 20 Load Current (mA) 25 30 Power Conversion Efficiency(%) 5(12) Testing Circuit ME 7660 Detailed Description ME7660 together with two external capacitors C1 C2 complement a voltage Inverter. Capacitor C1 is charged to a voltage V+, for the first half cycle when switches S1 and S3 are closed ( while switches S2 and S4 are open during this half cycle); During the second.


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