TPS2031DR原装现货
日期：2015-4-13 TPS2031DR.png)
• Ambient Temperature Range, –40°C to 85°C• Short-Circuit and Thermal Protection
• 2-kV Human-Body-Model, 200-V• Overcurrent Logic OUTPUT Machine-Model ESD Protection• Operating Range: 2.7 V to 5.5 V
• UL Listed– File No. E169910• Logic-Level Enable Input• Typical Rise Time: 6.1 ms• Undervoltage Lockout• Maximum Standby Supply Current: 10 μA• No Drain-Source Back-Gate Diode• Available in 8-pin SOIC and PDIP Packages
The TPS203X family of power distribution switches is intended for applications where heavy capacitive loads andshort circuits are likely to be encountered. These devices are 50-mΩ N-channel MOSFET high-side powerswitches. The switch is controlled by a logic enable compatible with 5-V logic and 3-V logic. Gate drive isprovided by an internal charge pump designed to control the power-switch rise times and fall times to minimizecurrent surges during switching. The charge pump requires no external components and allows operation fromsupplies as low as 2.7 V.When the output load exceeds the current-limit threshold or a short is present, the TPS203x limits the outputcurrent to a safe level by switching into a constant-current mode, pulling the overcurrent (OC) logic output low.When continuous heavy overloads and short circuits increase the power dissipation in the switch, causing thejunction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from athermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switchremains off until valid input voltage is present.The TPS203x devices differ only in short-circuit current threshold. The TPS2030 limits at 0.3-A load, theTPS2031 at 0.9-A load, the TPS2032 at 1.5-A load, the TPS2033 at 2.2-A load, and the TPS2034 at 3-A load(see Available Options). The TPS203x is available in an 8-pin small-outline integrated-circuit (SOIC) packageand in an 8-pin dual-in-line (DIP) package and operates over a junction temperature range of –40°C to 125°C.
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