The TPS20xxB-Q1 power-distribution switches are intended for applications where heavy capacitive loads and short circuits are likely to be encountered. These devices incorporate 105-mΩ 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 1 A (typical).

• Qualified for automotive applications
• AEC-Q100 qualified with the following results:
  • Device temperature grade 1: –40°C to 125°C ambient operating temperature range
  • Device HBM ESD classification level 2
  • Device CDM ESD classification level C6
  • Device MM ESD classification level M0
• 105-mΩ high-side MOSFET
• 500-mA continuous current
• Thermal and short-circuit protection
• Accurate current limit: 0.75A (minimum), 1.25 A (maximum)
• 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, dual) or 2 μA (triple, quad)
• Bidirectional switch
• UL recognized under file number 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)
• -40 to 125
• Enable
• Active Low
• Number of switches
• 2
• Rating
• Automotive

TPS2042B-Q1的完整型号有：TPS2042BQDRQ1，以下是这些产品的关键参数及官网采购报价：

TPS2042BQDRQ1，工作温度：-40 to 125，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TPS2042BQDRQ1的批量USD价格：.44（1000+）

TPS2042BEVM-293 — TPS2042B 评估模块

The TPS2042BEVM-293 is an evaluation module EVM for the Texas Instruments family of two-channel, current limited, power-distribution switches. This EVM operates over a 2.7V to 5.5V range and provides a continuous output current of up to 1.5A. Test points provide convenient access (...)