explain

Tps27081a is a high side load switch, which integrates a power pFET and a control NMOS in the micro package.

Tps27081a has industry standard ESD protection on all pins, so as to provide better ESD compatibility with other onboard components.

Tps27081a can convert the level of on / off logic signal to VIN level, and supports CPU or MCU Logic as low as 1.0V to control higher voltage power supply without external level shifter.

Opening a large output capacitor with a fast on / off logic signal may lead to excessive inrush current. In order to control the inrush current of the load,

As shown in Figure 2, connect a resistor R2. An external capacitor C1 can be added to further limit the inrush current.

To configure tps27081a to obtain a specific conversion rate, refer to the application information section. Standby power switching applications that do not require control of inrush current require a single pull-up resistor R1. In such applications, connect tps27081a pin R2 to system ground.

characteristic

• low on resistance, high current pFET

– when VGS = – 4.5V, R conduction = 32m Ω

– when VGS = – 3.0V, R conduction = 44m Ω

When vGr = 82v Ω, s = 82m

– when VGS = – 1.5V, R conduction = 93m Ω

– when VGS = – 1.2V, R conduction = 155m Ω

• adjustable on and off conversion rate control via external R1, R2 and C1

• supports a wide range of power inputs from 1.2V to up to 8V

• integrated NMOS for pFET control

• NMOS on / off supports a wide range of control logic interfaces from 1.0V to up to 8.0V

• full electrostatic discharge (ESD) protection (all pins)

– body model (HBM) 2KV, charger model (CDM) 500V

• ultra low leakage current in standby mode (typical value 100na)

• miniature 6-pin package

– 2.9mm x 2.8mm x 0.75mm thin small outline transistor (SOT) - 23 (DDC) package

Scope of application

• high side load switch

• inrush current control

• power sequencing and control

• standby power isolation

• portable power switch