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UR5516-TN5-R Datasheet(PDF) 1 Page - Unisonic Technologies |
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UR5516-TN5-R Datasheet(HTML) 1 Page - Unisonic Technologies |
1 / 9 page UNISONIC TECHNOLOGIES CO., LTD UR5516 LINEAR INTEGRATED CIRCUIT www.unisonic.com.tw 1 of 9 Copyright © 2007 Unisonic Technologies Co., Ltd QW-R101-015,D 3A BUS TERMINATION REGULATOR DESCRIPTION The UTC UR5516 is designed to provide a regulated voltage with bi-directional output current for DDR-SDRAM termination. Current-limit work to limit the short-circuit current, on-chip thermal shutdown provides protection against any combination of overload that would create excessive junction temperature. The output voltage tracks the voltage at VREF pin. A resistor divider connected to VIN, GND and VREF pins is used to provide a half voltage of VIN to VREF pin. In addition, an external ceramic capacitor and an open-drain transistor connected to VREF pin provides soft-start and shutdown control respectively. Pulling and holding the VREF to GND shuts off the output. The output of UTC UR5516 will be high impedance after being shut down by VREF or thermal shutdown function. FEATURES * Provide bi-direction current - Sourcing or sinking current up to 3A * 1.25V/0.9V output for DDR I/II applications * Fast transient response * High output accuracy - ±20mv over load, VOUT offset and temperature * Adjustable output voltage by external resistors * Current-limit protection * On-chip thermal shutdown * Shutdown for standby or suspend mode SOP-8 HSOP-8 TO-263-5 TO-252-5 1 1 *Pb-free plating product number: UR5516L ORDERING INFORMATION Ordering Number Normal Lead Free Plating Package Packing UR5516-S08-R UR5516L-S08-R SOP-8 Tape Reel UR5516-S08-R UR5516L-S08-R SOP-8 Tube UR5516-SH2-R UR5516L-SH2-R HSOP-8 Tape Reel UR5516-SH2-R UR5516L-SH2-R HSOP-8 Tube UR5516-TN5-R UR5516L-TN5-R TO-252-5 Tape Reel UR5516-TN5-T UR5516L-TN5-T TO-252-5 Tube UR5516-TQ5-R UR5516L-TQ5-R TO-263-5 Tape Reel UR5516-TQ5-T UR5516L-TQ5-T TO-263-5 Tube |
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