S-8425 Series BATTERY BACKUP SWITCHING IC www.sii-ic.com SII Semiconductor Corporation, 2002-2015 Rev.3.1 01 The S-8425 Series is a CMOS IC designed for use in the switching circuits of primary and backup power supplies on a single chip. It consists of three voltage regulators, two voltage detectors, a power supply switch and its controller, as well as other functions. In addition to the function for switching between the primary and backup power supply, the S-8425 Series can provide microcontrollers with two types of voltage detection output signals corresponding to the power supply voltage. Moreover, adopting a special sequence for switch control enables the effective use of the backup power supply, making this IC ideal for configuring a backup system. Features Low power consumption Normal operation: 15 A max. (V = 6 V) IN Backup: 2.1 A max. Voltage regulator Output voltage tolerance : 2% Output voltage: Independently selectable in 0.1 V steps in the range of 2.3 V to 5.4 V Two built-in voltage detectors (CS, RESET) Detection voltage tolerance: 2% Detection voltage: Selectable in 0.1 V steps in the range of 2.4 V to 5.3 V (CS voltage detector) Selectable in 0.1 V steps in the range of 1.7 V to 3.4 V (RESET voltage detector) RESET release delay: 300 s min. Switching circuit for primary power supply and backup power supply configurable on one chip Efficient use of backup power supply possible Special sequence Backup voltage is not output when the primary power supply voltage does not reach the initial voltage at which the switch unit operates. *1 Lead-free, Sn 100%, halogen-free *1. Refer to Product Name Structure for details. Packages 8-Pin TSSOP 8-Pin SON(B) Applications Camcorders Digital cameras Memory cards SRAM backup equipment 1 BATTERY BACKUP SWITCHING IC S-8425 Series Rev.3.1 01 Product Name Structure 1. Product Name (1) 8-Pin TSSOP S-8425A xx FT - TB - x Environmental code U: Lead-free (Sn 100%), halogen-free G: Lead-free (for details, please contact our sales office) IC direction in tape specification Package code FT: 8-Pin TSSOP Serial code (2) 8-Pin SON(B) S-8425A xx PA - TF - G Environmental code G: Lead-free (for details, please contact our sales office) IC direction in tape specification Package code PA: 8-Pin SON(B) Serial code 2. Packages Drawing Code Package Name Package Tape Reel Environmental code = G FT008-A-P-SD FT008-E-C-SD FT008-E-R-SD 8-Pin TSSOP Environmental code = U FT008-A-P-SD FT008-E-C-SD FT008-E-R-S1 8-Pin SON(B) PA008-B-P-SD PA008-B-C-SD PA008-B-R-SD 2