LTC1258 Series Micropower Low Dropout References FEATURES DESCRIPTION n 200mV Max Dropout at 10mA Output Current The LTC 1258/LTC1258-2.5/LTC1258-3/LTC1258-4.1/ n 4A Typical Quiescent Current LTC1258-5 are micropower bandgap references that n 0.15% Max Initial Accuracy (S8) combine high accuracy and low drift with very low sup- n No Output Capacitor Required ply current and small package size. The combination of n Output Sources 10mA, Sinks 2mA ultralow quiescent current and low dropout voltage of only n 40ppm/C Max Drift (S8) 200mV maximum makes them ideal for battery-powered n Voltage Options: 2.5V, 3V, 4.1V, 5V and Adjustable equipment. The output voltage is set by an external resistor n Available in Small MSOP Package divider for the adjustable LTC1258. This series of references uses curvature compensation to obtain low temperature coef cient and trimmed thin- lm APPLICATIONS resistors to achieve high output accuracy. These references n Battery-Powered Systems can source up to 10mA and sink up to 2mA, making them n Handheld Instruments ideal for precision regulator applications. They are stable n Precision Power Supplies without an output bypass capacitor, but are also stable n A/D and D/A Converters with capacitance up to 1F. This feature is important in critical applications where PC board space is a premium and fast settling is demanded. The LTC1258 series references provide power dissipation advantages over shunt references. In addition to supply current, shunt references must also idle the entire load current to operate. The LTC1258 series is available in the 8-pin MSOP and SO packages. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION LTC1258-2.5 Temperature Drift 4 3 2.5V Battery-Powered Reference 2 LTC1258-2.5 1 2 1 2.7V IN OUT 2.5V 0 TO 12.6V 0.1F 1 GND 1258 TA01 4 2 3 4 40 20 0 20 40 60 80 100 TEMPERATURE (C) 1258 TA02 1258sfb 1 REFERENCE VOLTAGE CHANGE (mV)LTC1258 Series ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage ..........................................................13V Operating Temperature Range (Note 2).. 40C to 100C Input Voltages ............................................ 0.3V to 13V Speci ed Temperature Range ..................... 0C to 70C Output Voltages ......................................... 0.3V to 13V Storage Temperature Range (Note 3) ..... 65C to 150C Output Short-Circuit Duration .......................... Inde nite Lead Temperature (Soldering, 10 sec) .................. 300C PIN CONFIGURATION TOP VIEW TOP VIEW OUT 1 8 DNC* OUT 1 8 DNC* IN 2 7 DNC* IN 2 7 DNC* **DNC/FB 3 6 DNC* **DNC/FB DNC* 3 6 GND 4 5 DNC* GND DNC* 4 5 MS8 PACKAGE 8-LEAD PLASTIC MSOP S8 PACKAGE 8-LEAD PLASTIC SO T = 125C, = 250C/W JMAX JA *CONNECTED INTERNALLY. DO NOT CONNECT EXTERNAL CIRCUITRY TO THESE PINS T = 125C, = 190C/W JMAX JA **DNC FOR LTC1258-2.5/LTC1258-3/LTC1258-4.1/LTC1258-5, FB FOR LTC1258 *CONNECTED INTERNALLY. DO NOT CONNECT EXTERNAL CIRCUITRY TO THESE PINS **DNC FOR LTC1258-2.5/LTC1258-3/LTC1258-4.1/LTC1258-5, FB FOR LTC1258 ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC1258CMS8 PBF (OBSOLETE) LTC1258CMS8 TRPBF LTEL 8-Lead Plastic MSOP 0C to 70C LTC1258CMS8-2.5 PBF LTC1258CMS8-2.5 TRPBF LTCF 8-Lead Plastic MSOP 0C to 70C LTC1258CMS8-3 PBF LTC1258CMS8-3 TRPBF LTEU 8-Lead Plastic MSOP 0C to 70C LTC1258CMS8-4.1 PBF LTC1258CMS8-4.1 TRPBF LTEN 8-Lead Plastic MSOP 0C to 70C LTC1258CMS8-5 PBF LTC1258CMS8-5 TRPBF LTEM 8-Lead Plastic MSOP 0C to 70C LTC1258CS8 PBF (OBSOLETE) LTC1258CS8 TRPBF 1258 8-Lead Plastic SO 0C to 70C LTC1258CS8-2.5 PBF LTC1258CS8-2.5 TRPBF 12582 8-Lead Plastic SO 0C to 70C LTC1258CS8-3 PBF LTC1258CS8-3 TRPBF 12583 8-Lead Plastic SO 0C to 70C LTC1258CS8-4.1 PBF LTC1258CS8-4.1 TRPBF 125841 8-Lead Plastic SO 0C to 70C LTC1258CS8-5 PBF LTC1258CS8-5 TRPBF 12585 8-Lead Plastic SO 0C to 70C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based nish parts. For more information on lead free part marking, go to: