LMC7660IM/NOPB National Semiconductor, LMC7660IM/NOPB Datasheet
LMC7660IM/NOPB
Specifications of LMC7660IM/NOPB
*LMC7660IM/NOPB
LMC7660IM
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LMC7660IM/NOPB Summary of contents
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... Block Diagram Pin Configuration Ordering Information 8-Lead Molded DIP 8-Lead Molded Small Outline © 2005 National Semiconductor Corporation Features n Operation over full temperature and voltage range without an external diode n Low supply current, 200 µA max n Pin-for-pin replacement for the 7660 n Wide operating range 1 ...
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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 Input Voltage on Pin 6, 7 (Note Current into Pin 6 (Note 2) Output Short Circuit ≤ 5.5V) + Duration (V Electrical Characteristics Symbol Parameter ...
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Typical Performance Characteristics OSC Freq. vs OSC Capacitance + @ out out FIGURE 1. LMC7660 Test Circuit 00913618 Supply Current & Power Efficiency vs Load Current (V 00913620 3 00913605 + @ V vs ...
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Typical Performance Characteristics Supply Current & Power Efficiency vs Load Current (V Unloaded Oscillator Frequency as a Function of Temperature P vs OSC Freq. @ eff Application Information CIRCUIT DESCRIPTION The LMC7660 contains four large CMOS switches which are switched ...
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Application Information In the circuit of Figure P-channel device and S2, S3, and S4 are N-channel devices. Because the output is biased below ground important that the p and S4 never become forward biased ...
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Typical Applications interference. The external clock still passes through the ÷2 FIGURE 3. Reduce Supply Current by Lowering Oscillator Frequency LOWERING OUTPUT IMPEDANCE Paralleling two or more LMC7660’s lowers output imped- ance. Each device must have it’s own pumping capacitor ...
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Typical Applications (Continued) INCREASING OUTPUT VOLTAGE Stacking the LMC7660s is an easy way to produce a greater negative voltage. It should be noted that the input current required for each stage is twice the load current on that stage as ...
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Typical Applications + redistributes to maintain precisely V this application all devices are only V voltage can be raised to 20V giving exactly 10V at V GETTING UP … AND DOWN The LMC7660 can also be used as a positive ...
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Typical Applications (Continued) REGULATING −V OUT It is possible to regulate the output of the LMC7660 and still maintain µPower performance. This is done by enclosing the LMC7660 in a loop with a LP2951. The circuit of Figure 12 will ...
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Typical Applications V = 1.235V ref *Low voltage operation FIGURE 13. LMC7660 and LP2951 Make a Negative Adjustable Regulator www.national.com (Continued) 10 00913617 ...
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Physical Dimensions inches (millimeters) unless otherwise noted Molded Small Outline Package (M) Order Number LMC7660IM NS Package Number M08A 11 www.national.com ...
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... BANNED SUBSTANCE COMPLIANCE National Semiconductor manufactures products and uses packing materials that 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. ...