Overview
The NCS1002ADR2G, produced by onsemi, is a highly integrated constant voltage and constant current secondary-side controller designed for Switching Mode Power Supply (SMPS) applications. This component is an upgrade from the NCS1002, focusing on reducing power consumption and enhancing efficiency. It features a dual control loop for both constant voltage (CV) and constant current (CC) regulation, making it ideal for applications such as battery chargers and other SMPS systems.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC to GND) | VCC | - | - | 36 | V |
| Differential Input Voltage | Vid | - | - | 36 | V |
| Input Voltage | Vi | -0.3 | - | 36 | V |
| ESD Protection Voltage | VESD | - | - | 2000 | V |
| Maximum Junction Temperature | TJ | - | - | 150 | °C |
| Operating Temperature Range | TA | -40 | - | 105 | °C |
| Total Supply Current (VCC = 5 V, no load) | ICC | 0.15 | 0.25 | 0.3 | mA |
| Input Offset Voltage (Op Amp 1) | VIO | 2.0 | - | 3.0 | mV |
| Input Offset Voltage (Op Amp 2) | VIO | 0.5 | - | 2.0 | mV |
| Power Supply Rejection Ratio (PSRR) | PSRR | 80 | - | 100 | dB |
Key Features
- Low Input Offset Voltage: 0.5 mV (typical) for Op Amp 2 and 2.0 mV (typical) for Op Amp 1.
- Input Common-Mode Range includes Ground: Both op-amps can operate with input voltages down to ground.
- Low Quiescent Current: 75 μA per op-amp at VCC = 5 V.
- Large Output Voltage Swing: High output voltage swing capabilities.
- Wide Power Supply Range: Operates from 3 V to 36 V.
- High ESD Protection: 2 kV ESD protection.
- Pb-Free Device: Compliant with lead-free packaging requirements.
Applications
- Battery Chargers: Ideal for battery charging applications requiring constant voltage and constant current regulation.
- Switch Mode Power Supplies (SMPS): Suitable for various SMPS applications where efficient dual control loops are necessary.
Q & A
- What is the primary function of the NCS1002ADR2G?
The NCS1002ADR2G is a constant voltage and constant current secondary-side controller for Switching Mode Power Supply (SMPS) applications.
- What are the key components required to complete the control loops?
A resistor divider for voltage regulation and a sense resistor for current sensing are required to complete the control loops.
- What is the operating temperature range of the NCS1002ADR2G?
The operating temperature range is from -40°C to 105°C.
- What is the maximum junction temperature for the NCS1002ADR2G?
The maximum junction temperature is 150°C.
- What is the typical input offset voltage for Op Amp 2?
The typical input offset voltage for Op Amp 2 is 0.5 mV.
- What is the power supply rejection ratio (PSRR) of the NCS1002ADR2G?
The PSRR is 80 dB to 100 dB.
- What is the quiescent current per op-amp at VCC = 5 V?
The quiescent current per op-amp at VCC = 5 V is 75 μA.
- What are the typical applications of the NCS1002ADR2G?
The typical applications include battery chargers and switch mode power supplies.
- What is the package type of the NCS1002ADR2G?
The NCS1002ADR2G comes in an 8-pin SOIC package.
- Is the NCS1002ADR2G a Pb-Free device?
Yes, the NCS1002ADR2G is a Pb-Free device.
