Overview
The CAT803STBI-GT3 is a 3-pin microprocessor power supply supervisor produced by ON Semiconductor. This device is part of the CAT803 series, which includes the CAT809 and CAT810, designed to monitor power supplies in digital systems. The CAT803STBI-GT3 is specifically configured with an open-drain RESET output that is active LOW. It is a direct replacement for the MAX803 in applications operating over the industrial temperature range and is available in the compact SOT-23 package.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| VCC Range | TA = 0°C to +70°C | 1.0 | 5.5 | V | |
| VCC Range | TA = −40°C to +85°C | 1.2 | 5.5 | V | |
| ICC Supply Current | TA = −40°C to +85°C, VCC < 5.5 V | 8 | 20 | μA | |
| VTH Reset Threshold Voltage | TA = +25°C, L Threshold | 4.56 | 4.63 | 4.70 | V |
| VTH Reset Threshold Voltage | TA = −40°C to +85°C, L Threshold | 4.50 | 4.75 | V | |
| Reset Output | Open-Drain Active LOW | ||||
| Package | SOT-23-3 | ||||
| Temperature Range | −40°C to +85°C |
Key Features
- Precision monitoring of +5.0 V, +3.3 V, +3.0 V, and +2.5 V power supplies with various tolerance levels.
- Open-drain RESET output (active LOW) requiring a pull-up resistor.
- Direct replacements for the MAX803, MAX809, and MAX810 in applications operating over the industrial temperature range.
- Reset valid down to VCC = 1.0 V.
- Low power supply current (typically 20 μA).
- Power supply transient immunity.
- Available in SOT-23 and SC-70 packages.
- Pb-free and RoHS compliant.
Applications
- Computers, servers, laptops, and cable modems.
- Wireless communications.
- Embedded control systems.
- White goods and power meters.
- Intelligent instruments.
- PDAs and handheld equipment.
Q & A
- What is the primary function of the CAT803STBI-GT3? The primary function is to monitor power supplies in digital systems and generate a reset signal when the power supply voltage falls below a preset threshold or during power-up.
- What type of reset output does the CAT803STBI-GT3 have? The CAT803STBI-GT3 has an open-drain RESET output that is active LOW.
- What are the typical applications for the CAT803STBI-GT3? Typical applications include computers, servers, laptops, wireless communications, embedded control systems, and intelligent instruments.
- What is the temperature range for the CAT803STBI-GT3? The device operates over an industrial temperature range of −40°C to +85°C.
- What is the power supply current for the CAT803STBI-GT3? The typical power supply current is 20 μA.
- Is the CAT803STBI-GT3 Pb-free and RoHS compliant? Yes, the device is Pb-free and RoHS compliant.
- What package types are available for the CAT803STBI-GT3? The device is available in SOT-23 and SC-70 packages.
- How does the CAT803STBI-GT3 handle power supply transients? The device ignores fast transients on the power supply and ensures the output is in the correct state at VCC levels as low as 1.0 V.
- What is the reset threshold voltage for the CAT803STBI-GT3? The reset threshold voltage varies depending on the specific version, but for the L threshold, it is typically around 4.63 V at TA = +25°C.
- Can the CAT803STBI-GT3 be used as a replacement for other devices? Yes, it is a direct replacement for the MAX803 in applications operating over the industrial temperature range.
