LM828 Datasheet | Texas Instruments

FEATURES - 2 Inverts Input Supply Voltage - SOT-23 Package - 20Ω Typical Output Impedance - 97% Typical Conversion Efficiency at 5 m A APPLICATIONS - Cellular Phones - Pagers - PDAs - Operational Amplifier Power Supplies - Interface Power Supplies - Handheld Instruments DESCRIPTION The LM828 CMOS charge-pump voltage converter inverts a positive voltage in the range of +1.8V to +5.5V to the corresponding negative voltage of - 1.8V to - 5.5V. The LM828 uses two low cost capacitors to provide up to 25 m A of output current. The LM828 operates at 12 k Hz switching frequency to reduce output resistance and voltage ripple. With an operating current of only 40 µA (operating efficiency greater than 96% with most loads), the LM828 provides ideal performance for battery powered systems. The device is in a tiny SOT-23 package. Basic Application Circuits Voltage Inverter +5V to - 10V Converter Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright © 2010- 2013, Texas Instruments Incorporated SNOS035D - MARCH 2010 - REVISED MAY 2013 .ti. These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Absolute Maximum Ratings(1)(2) Supply Voltage (V+ to GND, or GND to OUT) V+ and OUT Continuous Output Current Output Short-Circuit Duration to GND(3) Continuous Power Dissipation (TA = 25°C)(4) TJMax (4) θJA (4) Operating Junction Temperature Range Storage...