- 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：低电平有效的 3 通道、0.25A 负载、2.7-5.5V、70mΩ USB 电源开关
- 点击这里打开及下载TPS2047B的技术文档资料
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The TPS204xB/TPS2055B power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 70-m
N-channel MOSFET power switches for power-distribution systems that require multiple power switches in a single package. Each switch is controlled by a 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 2.7 V.
When the output load exceeds the current-limit threshold or a short is present, the device limits 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 that the switch remains off until valid input voltage is present. This power-distribution switch is designed to set current limit at 0.5 A typically.
- 70-m High-Side MOSFET
- 250-mA Continuous Current
- Thermal and Short-Circuit Protection
- Accurate Current Limit (0.3 A min, 0.7 A max)
- Operating Range: 2.7 V to 5.5 V
- 0.6-ms Typical Rise Time
- Undervoltage Lockout
- Deglitched Fault Report (OC)
- No OC Glitch During Power Up
- Maximum Standby Supply Current: 1-μA (Single and Dual) or 2-μA (Triple)
- Bidirectional Switch
- Ambient Temperature Range: -40°C to 85°C
- ESD Protection
- UL Pending
- APPLICATIONS
- Heavy Capacitive Loads
- Short-Circuit Protections
- Vin (Min) (V)
- 2.7
- Vin (Max) (V)
- 5.5
- Continuous current (Max) (A)
- 0.25
- Current limit (A)
- 0.5
- Product type
- Fixed current limit, Power switch
- Operating temperature range (C)
- -40 to 125
- Enable
- Active Low
- Number of switches
- 3
- Rating
- Catalog
TPS2047B的完整型号有：TPS2047BD，以下是这些产品的关键参数及官网采购报价：
TPS2047BD，工作温度：-40 to 125，封装：SOIC (D)-16，包装数量MPQ：40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TPS2047BD的批量USD价格：0.95（1000+）
TPS2047BD，工作温度：-40 to 125，封装：SOIC (D)-16，包装数量MPQ：40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TPS2047BD的批量USD价格：0.95（1000+）
