Overview
The CAT809SSDI-GT3 is a 3-pin microprocessor power supply supervisor produced by ON Semiconductor. This device is part of the CAT809 series, which includes direct replacements for the MAX809 in applications operating over the industrial temperature range. The CAT809SSDI-GT3 is designed to monitor power supplies in digital systems, ensuring reliable operation by generating a reset signal when the power supply voltage falls below a preset threshold level.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Nominal Threshold Voltage | Threshold voltage for reset assertion | 2.93 V (S suffix) |
| Output Configuration | Type of reset output | Push-pull, active LOW reset |
| Package Type | Physical package of the device | SC-70 (3-lead) |
| Operating Temperature Range | Temperature range for device operation | -40°C to +85°C |
| Power Supply Current | Current drawn from the power supply | 6 μA |
| Reset Active Timeout Period | Duration the reset signal remains active after VCC rises above the threshold | 140 ms to 240 ms |
| RESET Output Voltage Low | Voltage level of the reset output when low | 0.3 V (ISINK = 1.2 mA) |
| RESET Output Voltage High | Voltage level of the reset output when high | VCC - 1.5 V (ISOURCE = 500 μA) |
Key Features
- Precision monitoring of power supplies for +5.0 V, +3.3 V, +3.0 V, and +2.5 V systems with various threshold levels
- Push-pull active LOW reset output configuration for the CAT809 series
- Direct replacements for the MAX809 in applications operating over the industrial temperature range
- Reset valid down to VCC = 1.0 V
- Power supply transient immunity to ignore fast transients
- Pb-free and RoHS compliant
- Available in compact 3-pin SOT-23 and SC-70 packages
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 CAT809SSDI-GT3?
The primary function is to monitor the power supply voltage and generate a reset signal if the voltage falls below a preset threshold level.
- What are the available output configurations for the CAT809 series?
The CAT809 series features a push-pull active LOW reset output configuration.
- What is the operating temperature range of the CAT809SSDI-GT3?
The operating temperature range is -40°C to +85°C.
- What is the typical power supply current drawn by the CAT809SSDI-GT3?
The typical power supply current is 6 μA.
- How long does the reset signal remain active after the power supply voltage rises above the threshold?
The reset signal remains active for 140 ms to 240 ms after the power supply voltage rises above the threshold.
- What is the voltage level of the reset output when it is low?
The voltage level of the reset output when low is 0.3 V (ISINK = 1.2 mA).
- Is the CAT809SSDI-GT3 Pb-free and RoHS compliant?
- In what packages is the CAT809SSDI-GT3 available?
The CAT809SSDI-GT3 is available in 3-pin SOT-23 and SC-70 packages.
- What are some common applications of the CAT809SSDI-GT3?
- Can the CAT809SSDI-GT3 ignore fast transients on the power supply?
