Overview
The ST890BDR is a low-voltage, P-channel MOSFET power switch designed for high-side load switching applications. Produced by STMicroelectronics, this device operates with input voltages ranging from 2.7 V to 5.5 V, making it suitable for both 3 V and 5 V systems. The ST890BDR features internal current limiting circuitry that protects the input supply against overload and thermal overload protection to limit power dissipation and junction temperatures. This component is particularly useful in applications requiring reliable and efficient power management.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.7 to 5.5 | V |
| Current Limit | Up to 1.2 | A |
| On State Resistance | 90 mΩ (typ.) | Ω |
| Package Type | SO-8, DFN8L (3 x 3 mm) | - |
| No. of Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Thermal Protection | Yes | - |
| On / Enable Input Polarity | Active Low | - |
Key Features
- 2.7 V to 5.5 V input range, suitable for both 3 V and 5 V systems
- Programmable current limit up to 1.2 A
- Low quiescent current
- Thermal shutdown
- Active-low FAULT indicator output
- 90 mΩ (typ.) ON resistance
- Available in SO-8 and DFN8L (3 x 3 mm) packages
Applications
- PCMCIA slots
- Access bus slots
- Portable equipment
Q & A
- What is the input voltage range of the ST890BDR?
The input voltage range is from 2.7 V to 5.5 V.
- What is the maximum current limit of the ST890BDR?
The maximum current limit is up to 1.2 A.
- What type of thermal protection does the ST890BDR have?
The ST890BDR features thermal shutdown and thermal overload protection.
- What are the available package types for the ST890BDR?
The device is available in SO-8 and DFN8L (3 x 3 mm) packages.
- What is the typical ON resistance of the ST890BDR?
The typical ON resistance is 90 mΩ.
- Does the ST890BDR have an active-low FAULT indicator output?
Yes, it does.
- What is the operating temperature range of the ST890BDR?
The operating temperature range is from -40°C to 85°C.
- Is the ST890BDR RoHS compliant?
Yes, it is RoHS compliant.
- How is the current limit programmed in the ST890BDR?
The current limit is programmed with a resistor from SET to ground.
- What are some common applications of the ST890BDR?
Common applications include PCMCIA slots, access bus slots, and portable equipment.
