Overview
The CS3361YDR14G, produced by onsemi, is an integral alternator regulator integrated circuit designed for voltage regulation in automotive 3-phase alternators. This IC drives an external logic level N-channel enhancement power FET to control the alternator field current. It features temperature-compensated regulation voltage, load dump protection up to 80 V, and shorted field protection with a self-clearing duty cycle. The device is available in an SOIC-14 package and is Pb-free, making it suitable for modern automotive electrical systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Storage Temperature Range | -55 | 165 | °C | |
| Junction Temperature Range | -40 | 150 | °C | |
| Continuous Supply Voltage | 27 | V | ||
| Load Dump (@ VCC = 80 Vpeak) | 400 | mA | ||
| Driver Stage Output High Voltage | 5.5 | 12 | V | |
| Driver Stage Output Low Voltage (IOL = 25 μA) | 0.35 | V | ||
| Oscillator Frequency (COSC = 0.022 μF) | 90 | 210 | Hz | |
| Regulation Voltage @25°C, R1 = 100 kΩ, R2 = 50 kΩ | 13.8 | 15.8 | V |
Key Features
- Drives logic level power NFET for alternator field current control.
- 80 V load dump protection.
- Temperature-compensated regulation voltage.
- Shorted field protection with self-clearing duty cycle.
- Lamp output pin to drive an external Darlington transistor for fault indication.
- Customized current sense circuitry for FET transistors.
- Pb-free SOIC-14 package.
Applications
The CS3361YDR14G is designed for use in alternator charging systems of automotive vehicles. It regulates the voltage output of 3-phase alternators by controlling the field current. The IC is integral to the alternator system, ensuring stable and regulated voltage output despite variations in engine speed and load conditions.
Q & A
- What is the primary function of the CS3361YDR14G?
The primary function is to provide voltage regulation for automotive 3-phase alternators by controlling the alternator field current. - What type of package is the CS3361YDR14G available in?
The CS3361YDR14G is available in a Pb-free SOIC-14 package. - What is the load dump protection capability of the CS3361YDR14G?
The IC has a load dump protection capability up to 80 V. - How does the CS3361YDR14G handle shorted field conditions?
The IC features shorted field protection with a self-clearing duty cycle. - What is the purpose of the lamp output pin on the CS3361YDR14G?
The lamp output pin drives an external Darlington transistor to indicate no stator signal or overvoltage conditions. - What is the typical oscillator frequency of the CS3361YDR14G?
The typical oscillator frequency is between 90 Hz and 210 Hz with a 0.022 μF capacitor. - How is the regulation voltage adjusted in the CS3361YDR14G?
The regulation voltage is adjusted using a resistor divider network connected to the Sense pin of the IC. - What is the maximum junction temperature for the CS3361YDR14G?
The maximum junction temperature is 150°C. - Is the CS3361YDR14G Pb-free?
Yes, the CS3361YDR14G is a Pb-free device. - What is the typical supply current when the CS3361YDR14G is enabled?
The typical supply current when enabled is 10 mA.
