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TC54VX30 Datasheet(PDF) 1 Page - Microchip Technology |
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TC54VX30 Datasheet(HTML) 1 Page - Microchip Technology |
1 / 16 page 2004 Microchip Technology Inc. DS21434G-page 1 TC54 Features • Precise Detection Thresholds: Standard ±2.0%, Custom ±1.0% • Small Packages: 3-Pin SOT-23A, 3-Pin SOT-89, TO-92 and 5-Pin SOT-23A (7.7V only) • Low Current Drain: Typ. 1 µA • Wide Detection Range: 1.1V to 6.0V and 7.7V • Wide Operating Voltage Range: 0.7V to 10V Applications • Battery Voltage Monitoring • Microprocessor Reset • System Brown-Out Protection • Switching Circuit in Battery Backup • Level Discriminator Functional Block Diagram General Description The TC54 series are CMOS voltage detectors that are especially well suited for battery-powered applications because of their extremely low 1 µA operating current and small surface-mount packaging. Each part is laser- trimmed to the desired threshold voltage, which can be specified from 1.4V to 7.7V for a 2% tolerance and from 1.5V to 6.0V for a 1% tolerance. The device includes a comparator, low-current high- precision reference, laser-trimmed divider, hysteresis circuit and output driver. The TC54 is available with either an open-drain or complementary output stage. During operation, the TC54's output (VOUT) remains in the logic-high state as long as VIN is greater than the specified threshold voltage (VDET –). When VIN falls below VDET –, the output is driven to a logic-low. VOUT remains low until VIN rises above VDET – by an amount VHYST, whereupon it resets to a logic-high. Package Types VOUT TC54VC only VSS 1 3 + – VIN 2 TC54VN has open-drain output. TC54VC has complementary output. VREF 1 3 2 VIN VSS VOUT TC54 3-Pin SOT-89 5 5-Pin SOT-23A TC54 1 3 4 2 NC NC Note: 3-Pin SOT-23A is equivalent to the EIAJ SC-59 5-Pin SOT-23A is equivalent to the EIAJ SC-74A. (7.7V ONLY) 3-Pin TO-92 12 3 VSS VIN VOUT VIN VOUT VSS 3 12 TC54 3-Pin SOT-23A VIN VIN VSS VOUT VOUT VSS Voltage Detector |
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