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首 页 > 新闻动态 > 公司新闻 > 供应 TPS2052BDG TI TSSOP8 双电源配电开关 供应 TPS2052BDG TI TSSOP8 双电源配电开关135-mW -Maximum (5-V Input) High-Side
MOSFET Switch 500 mA Continuous Current per Channel Short-Circuit and Thermal Protection With Overcurrent Logic Output Operating Range . . . 2.7-V to 5.5-V Logic-Level Enable Input 2.5-ms Typical Rise Time Undervoltage Lockout 10 mA Maximum Standby Supply Current Bidirectional Switch Available in 8-pin SOIC and PDIP Packages Ambient Temperature Range, –40°C to 85°C 2-kV Human-Body-Model, 200-V Machine-Model ESD Protection UL Listed – File No. E169910 description The TPS2042 and TPS2052 dual power distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. The TPS2042 and the TPS2052 incorporate in single packages two 135-mW N-channel MOSFET high-side power switches for power distribution systems that require multiple power switches. Each switch is controlled by a logic enable that is compatible with 5-V logic and 3-V logic. Gate drive is provided by an internal charge pump designed to control the power-switch rise times and fall times to minimize current surges during switching. The charge pump requires no external components and allows operation from supplies as low as 2.7 V. When the output load exceeds the current-limit threshold or a short is present, the TPS2042 and TPS2052 limit the output current to a safe level by switching into a constant-current mode, pulling the overcurrent (OCx) logic output low. When continuous heavy overloads and short circuits increase the power dissipation in the switch causing the junction temperature to rise, a thermal protection circuit shuts off the switch to prevent damage. Recovery from a thermal shutdown is automatic once the device has cooled sufficiently. Internal circuitry ensures the switch remains off until valid input voltage is present. The TPS2042 and TPS2052 are designed to limit at 0.9-A load. These power distribution switches are available in 8-pin small-outline integrated circuit (SOIC) and 8-pin plastic dual-in-line packages (PDIP) and operate over an ambient temperature range of –40°C to 85° |
