LM2661MMX National Semiconductor, LM2661MMX Datasheet
LM2661MMX
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LM2661MMX Summary of contents
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... The oscillator frequency for the LM2661 is 80 kHz. Basic Application Circuits Voltage Inverter © 2004 National Semiconductor Corporation Features n Inverts or doubles input supply voltage n Narrow SO-8 and Mini SO-8 Package n 6.5Ω ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage (V+ to GND, or GND to OUT) LV (OUT − 0.3V) to (GND + 3V) FC, OSC The least negative of (OUT − 0.3V) or (V+ − 6V) to (V+ + 0.3V) ...
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Test Circuits Typical Performance Characteristics (Circuit of Figure 1) Supply Current vs Supply Voltage 01291107 Output Source Resistance vs Temperature 01291110 01291105 FIGURE 1. LM2660 and LM2661 Test Circuits Supply Current vs Oscillator Frequency 01291108 Efficiency vs Load Current 01291111 ...
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Typical Performance Characteristics Efficiency vs Oscillator Frequency 01291113 Oscillator Frequency vs Supply Voltage (FC = V+) 01291116 Oscillator Frequency vs Temperature (FC = Open) www.national.com (Circuit of Figure 1) (Continued) Output Voltage vs Oscillator Frequency 01291114 Oscillator Frequency vs Supply ...
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... M08A LM2661MM MUA08A LM2661MMX MUA08A Note 9: The first letter “S” identifies the part as a switched capacitor converter. The next two numbers are the device number: “01” for a LM2660 device, and “02” for a LM2661 device. The fourth letter “A” indicates the grade. Only one grade is available. Larger quantity reels are available upon request. ...
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Pin Description Pin Name Voltage Inverter 1 FC Frequency control for internal oscillator: (LM2660 open kHz (typ); OSC kHz (typ); OSC FC has no effect when OSC pin is ...
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Application Information The peak-to-peak output voltage ripple is determined by the oscillator frequency, and the capacitance and ESR of the output capacitor Again, using a low ESR capacitor will result in lower ripple. POSITIVE VOLTAGE DOUBLER The ...
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Application Information value, smaller size capacitor usually has a higher ESR com- FIGURE 3. Output Source Resistance vs Oscillator Frequency Manufacturer Phone Nichicon Corp. (708)-843-7500 AVX Corp. (803)-448-9411 Sprague (207)-324-4140 Sanyo (619)-661-6835 Other Applications PARALLELING DEVICES Any number of LM2660s ...
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Other Applications (Continued) CASCADING DEVICES Cascading the LM2660s (or LM2661s easy way to produce a greater negative voltage (as shown in Figure 5 the integer representing the number of devices cas- caded, the unloaded output ...
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Other Applications (Continued) REGULATING V out It is possible to regulate the output of the LM2660/LM2661 by use of a low dropout regulator (such as LP2951). The whole converter is depicted in Figure 8. This converter can give a regulated ...
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Other Applications (Continued) FIGURE 9. Generating +5V from +3V Input Voltage 11 01291128 www.national.com ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Lead SO (M) Order Number LM2660M or LM2661M NS Package Number M08A 8-Lead Mini SO (MM) Order Number LM2660MM or LM2661MM NS Package Number MUA08A 12 ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...