Details, datasheet, quote on part number: S-8424AADFT-TB
PartS-8424AADFT-TB
CategoryPower Management => Supervisory Circuits => Voltage Detectors => voltage detectors+voltage regulators
Titlevoltage detectors+voltage regulators
DescriptionFeature = Battery Backup Switching ic ;; Composition = 2V/R + 3V/D + SW ;; Output Current = - ;; Output Voltage = 2.3-5.4 V (0.1V Step) ;; Detection Voltage = 2.4-5.3 V(CS), 1.7-3.4 V(PREEND, RESET) ;; Accuracy = ±2% ;; Current Consumption = 15 µA Max. (Operating) 2.1 µA Max. (Back Up) ;; Package (Power Dissipation) = 8-pin Tssop 8-pin Son (B)
CompanySeiko Instruments
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Features, Applications

The S-8424A 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 two voltage regulators, three voltage detectors, a power supply switch and its controller, as well as other functions. In addition to the switching function between the primary and backup power supply, the S-8424A Series can provide the micro controllers with three 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. (VIN 6 V) Backup: 2.1 A Max. Voltage regulator Output voltage tolerance 2 % Output voltage: Independently selectable 0.1 V steps in the range 5.4 V Three built-in voltage detectors (CS, PREEND , RESET ) Detection voltage precision: 2 % Detection voltage: Selectable 0.1 V steps in the range 5.3 V (CS voltage detector) Selectable 0.1 V steps in the range V ( PREEND , RESET voltage detector) 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.

8-Pin TSSOP (Package drawing No.: FT008-A) 8-Pin SON(B) (Package drawing No.: PA008-B)
Applications
Video camera recorders Still video cameras Memory cards SRAM backup equipment
BATTERY BACKUP SWITCHING IC S-8424A Series Selection Guide

Caution Set the CS voltage so that the switch voltage (VSW1) is equal to or greater than the RESET detection voltage (-VDET2). Remark 1. The selection range is as follows. VRO, VOUT: (0.1 V steps) (0.1 V steps) (0.1 V steps (0.1 V steps) If a product with a voltage other than above is required, contact our sales representative.

xx IC direction in tape specification TB: 8-Pin TSSOP TF: 8-Pin SON(B) Package code FT: 8-Pin TSSOP PA: 8-Pin SON(B) Serial code


 

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