LM2682 Datasheet | National Semiconductor

Description The LM2682 is a CMOS charge-pump voltage inverter capable of converting positive voltage in the range of +2.0V to +5.5V to the corresponding doubled negative voltage of - 4.0V to - 11.0V respectively. The LM2682 uses three low cost capacitors to provide 10 m A of output current without the cost, size, and EMI related to inductor based circuits. With an operating current of only 150 µA and an operating efficiency greater than 90% with most loads, the LM2682 provides ideal performance for battery powered systems. The LM2682 offers a switching frequency of 6 k Hz. Features n n n n Inverts then doubles input supply voltage Small MSOP-8 package (mini SO-8) and SO-8 package 90Ω typical output impedance 94% typical power efficiency at 10 m A Applications n n n n n LCD contrast biasing Ga As power amplifier biasing Interface power supplies Handheld instrumentation Laptop puters and PDAs Typical Operating Circuit and Pin Configuration 8-Pin MSOP or 8-Pin SOIC DS100997-2 DS100997-1 Ordering Information Order Number LM2682MM LM2682MMX LM2682M LM2682MX Package MSOP-8 MSOP-8 SO-8 SO-8 Package Number MUA08A MUA08A M08A M08A Package Marking S11A S11A LM2682M LM2682M Supplied As Tape and Reel (1000 units/reel) Tape and Reel (3500 units/reel) Rail (95 units/rail) Tape and Reel (2500 units/reel) © 1999 National Semiconductor Corporation DS100997 .national. Absolute Maximum Ratings (Note 1) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Input Voltage (VIN) VIN d V/d T VOUT VOUT Short-Circuit Duration Storage Temperature Lead Temperature Soldering Power Dissipation (Note 2) +5.8V 1V/µsec - 11.6V Continuous - 65˚C to +150˚C +300˚C MSOP-8 SO-8 TJMAX 300 m W 470 m W +150˚C Operating Ratings ESD Susceptibility (Note 3) Human Body Model Machine Model Ambient Temp. Range Junction Temp. Range 2 k V 200V - 40˚C to +85˚C - 40˚C to +125˚C VIN = 5V and C1 = C2 = C3...