- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：USB 电源开关和充电端口控制器
- 功能描述：高电平有效的 0.5A 负载、1A ILIMIT、2.7-5.5V、80mΩ USB 电源开关
- 点击这里打开及下载TPS2051A的技术文档资料
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The TPS2041A through TPS2044A and TPS2051A through TPS2054A power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 80-m
N-channel MOSFET high-side power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by an independent logic enable input. 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 2.7V.
When the output load exceeds the current-limit threshold or a short is present, these devices 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. These power-distribution switches are designed to current limit at 0.9 A.
- 80-m High-Side MOSFET Switch
- 500 mA Continuous Current Per Channel
- Independent Thermal and Short-Circuit Protection With Overcurrent Logic Output
- Operating Range...2.7 V to 5.5 V
- CMOS- and TTL-Compatible Enable Inputs
- 2.5-ms Typical Rise Time
- Undervoltage Lockout
- 10 uA Maximum Standby Supply Current for Single and Dual (20 uA for Triple and Quad)
- Bidirectional Switch
- Ambient Temperature Range, 0°C to 85°C
- ESD Protection
- UL Listed - File No. E169910
- Vin (Min) (V)
- 2.7
- Vin (Max) (V)
- 5.5
- Continuous current (Max) (A)
- 0.5
- Current limit (A)
- 1
- Product type
- Fixed current limit, Power switch
- Operating temperature range (C)
- 0 to 85
- Enable
- Active High
- Number of switches
- 1
- Rating
- Catalog
TPS2051A的完整型号有：TPS2051AD、TPS2051ADR，以下是这些产品的关键参数及官网采购报价：
TPS2051AD，工作温度：0 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2051AD的批量USD价格：.868（1000+）
TPS2051ADR，工作温度：0 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2051ADR的批量USD价格：.744（1000+）
TPS2051AD，工作温度：0 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2051AD的批量USD价格：.868（1000+）
TPS2051ADR，工作温度：0 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网TPS2051ADR的批量USD价格：.744（1000+）
