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TS1108 Datasheet(PDF) 1 Page - Silicon Laboratories |
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TS1108 Datasheet(HTML) 1 Page - Silicon Laboratories |
1 / 23 page TS1108 Data Sheet TS1108 Coulomb Counter: Bidirectional Current Sense Amplifier with Integrator + Comparator The TS1108 coulomb counter accurately measures battery depletion while also indicat- ing the battery charging polarity. The battery discharge current is monitored by a current- sense amplifier through an external sense resistor. Utilizing an Integrator and a Compa- rator plus a Monoshot, the TS1108 voltage-to-frequency converter provides a series of 90 µs output pulses at COUT which represents an accumulation of coulombs flowing out of the battery. The charge count frequency is adjustable by the integration resistor and capacitor. Applications • Power Management Systems • Portable/Battery-Powered Systems • Smart Chargers KEY FEATURES • Coulomb Counting plus Charge Polarity • Adjustable Charge Count Frequency • External Crystal Oscillator Not Required • Low Supply Current • Current Sense Amplifier: 0.68 µA • IVDD: 1.93 µA • High Side Bidirectional Current Sense Amplifier • Wide CSA Input Common Mode Range: +2 V to +27 V • Low CSA Input Offset Voltage: 150 µV(max) • Low Gain Error: 1%(max) • Two Gain Options Available: • Gain = 20 V/V : TS1108-20 • Gain = 200 V/V : TS1108-200 • 16-Pin TQFN Packaging (3 mm x 3 mm) silabs.com | Smart. Connected. Energy-friendly. Rev. 1.0 |
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