Overview
The TPS27081ADDCR is a high-side load switch produced by Texas Instruments. This device integrates a Power PFET and a Control NFET in a compact 6-pin SOT-23-THN (DDC) package. It is designed to handle supply voltages ranging from 1.2 V to 8 V and can support load currents up to 3 A. The TPS27081ADDCR features an ultra-low resistance P-channel MOSFET, which minimizes voltage drop and dropout voltage, making it suitable for low voltage and high current applications. The device also includes adjustable turn-on and turn-off slew rate control, which helps in reducing or eliminating power supply droop caused by large inrush currents.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VIN Input Voltage | 1 to 8 | V |
| Load Current | Up to 3 | A |
| RDS(on) at VGS = –4.5 V | 32 | mΩ |
| RDS(on) at VGS = –3 V | 44 | mΩ |
| RDS(on) at VGS = –1.8 V | 82 | mΩ |
| RDS(on) at VGS = –1.5 V | 93 | mΩ |
| RDS(on) at VGS = –1.2 V | 155 | mΩ |
| Operating Temperature Range | –40 to 85 | °C |
| Junction Temperature Range | –40 to 105 | °C |
| ESD Protection | HBM 2 kV, CDM 500 V | |
| Leakage Current in Standby | Typical 100 nA | |
| Package Type | SOT-23-THN (DDC) |
Key Features
- Low ON-Resistance, High-Current PFET
- Adjustable Turn-on and Turn-off Slew Rate Control through external R1, R2, and C1
- Supports a wide range of 1.2-V to 8-V supply inputs
- Integrated NMOS for PFET control
- NMOS ON/OFF supports a wide range of 1-V to 8-V control logic interface
- Full ESD protection on all pins (HBM 2 kV, CDM 500 V)
- Ultra-low leakage current in standby (typical 100 nA)
- Available in a tiny 6-pin SOT-23-THN (DDC) package
- Level shifts ON/OFF logic signal to VIN levels, supporting CPU or MCU logic as low as 1 V
Applications
The TPS27081ADDCR is versatile and can be used in various applications, including:
- Power sequencing and management in complex systems
- Control of load inrush current to prevent power supply droop
- Standby power switch applications where low leakage current is essential
- Systems requiring high-side load switching with adjustable slew rates
- Applications needing ESD protection and compatibility with other onboard components
Q & A
- What is the voltage range supported by the TPS27081ADDCR?
The TPS27081ADDCR supports a wide range of 1.2 V to 8 V supply inputs.
- What is the maximum load current the TPS27081ADDCR can handle?
The device can support load currents up to 3 A.
- How does the TPS27081ADDCR control inrush current?
The device controls inrush current through adjustable turn-on and turn-off slew rate control using external resistors (R1, R2) and a capacitor (C1).
- What type of ESD protection does the TPS27081ADDCR offer?
The device offers full ESD protection on all pins, with HBM 2 kV and CDM 500 V.
- What is the typical leakage current in standby mode for the TPS27081ADDCR?
The typical leakage current in standby mode is 100 nA.
- What package type is the TPS27081ADDCR available in?
The device is available in a 6-pin SOT-23-THN (DDC) package.
- How does the TPS27081ADDCR level shift the ON/OFF logic signal?
The device level shifts the ON/OFF logic signal to VIN levels, supporting CPU or MCU logic as low as 1 V.
- What are the operating temperature ranges for the TPS27081ADDCR?
The operating temperature range is from –40°C to 85°C, and the junction temperature range is from –40°C to 105°C.
- How can the output rise time be controlled in the TPS27081ADDCR?
The output rise time can be controlled by connecting a resistor (R2) and a capacitor (C1) between the VOUT and R1/C1 pins.
- What is the purpose of the NMOS transistor in the TPS27081ADDCR?
The NMOS transistor is used to control the PFET, allowing the device to interface with a wide range of GPIO voltages.
