LM432

LM432 www.ti.com SNOS538C – MAY 2004 – REVISED SEPTEMBER 2004 LM432 Dual Op Amp with On-Chip Fixed 2.5V Reference Check for Samples: LM432 FEATURES 1 2 Dual Op Amp Circuitry (Typical for VS= 5V) Input offset voltage 0.6mV Input offset current 1nA Input bias current 3nA Common-mode input voltage range 0V to VS−1V Power supply current 150µA Reference Circuitry Reference voltage 2.5V Reference voltage deviation (−40°C to 85°C) 4mV Sink Current Capability 0.2mA to 10mA APPLICATIONS Low cost charging circuitry Power supplies and adapters DESCRIPTION The LM432 integrates two operational amplifiers and one 2.5V reference. The reference is based on the LMV431 adjustable shunt regulator with the output voltage adjusted to a fixed 2.5V. The Op Amps are similar to the LM358 with a common-mode input range that includes ground. Integrating the reference and Op Amps creates a solution for low cost charging applications. Connection Diagram Application Circuit Figure 1. 8-Pin SOIC (Top View) Figure 2. Optocoupler Driver Circuit for Power Supply Isolation 1 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. 2 PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the ...