Overview
The NCP4300ADR2G, produced by onsemi, is a monolithic integrated circuit designed to control the output current and voltage levels of switch-mode battery chargers and power supplies. This device integrates a precision 2.6 V shunt reference and two operational amplifiers, making it a comprehensive solution for power converter designers. It offers increased precision and reduces system complexity and cost.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VCC to GND) | VCC | - | - | 36 | V |
| Input Offset Voltage (Op-Amp 1 & 2) | VIO | - | 0.5 | 3.0 | mV |
| Input Common Mode Voltage Range | VICR | 0 | - | VCC - 1.5 | V |
| Supply Current (Total) | ICC | - | 0.8 | - | mA |
| Unity Gain Bandwidth | BW | 0.3 | 0.7 | - | MHz |
| Output Voltage Swing, High | VOH | 27 | - | - | V |
| Output Voltage Swing, Low | VOL | - | - | 100 | mV |
| Reference Voltage | Vref | 2.574 | 2.60 | 2.626 | V |
| Reference Input Voltage Deviation Over Full Temperature Range | ΔVref | - | - | 22 | mV |
| Minimum Cathode Current for Regulation | IK(min) | 55 | - | - | μA |
Key Features
- Precision Voltage Reference: Fixed output voltage reference of 2.60 V with high precision over temperature (±1.0% from 0°C to 105°C).
- Dual Operational Amplifiers: One op-amp for voltage control with its non-inverting input connected to the internal reference, and one independent op-amp for current control or general-purpose use.
- Low Input Offset Voltage: 0.5 mV typical for both op-amps.
- Wide Power Supply Voltage Range: Operates from 3.0 V to 35 V.
- Low Supply Current: 210 μA per op-amp at VCC = 5.0 V.
- Large Output Voltage Swing: Output voltage swing from 0 V to VCC - 1.5 V.
- High Power Supply Rejection Ratio (PSRR): Up to 90 dB.
- Compact Package: Available in an 8-lead surface mount package (SOIC-8).
Applications
- Battery Chargers: Suitable for switch-mode battery chargers with constant-voltage and constant-current modes.
- Switch Mode Power Supplies: Ideal for controlling output voltage and current in power supply applications.
Q & A
- What is the primary function of the NCP4300ADR2G?
The NCP4300ADR2G is designed to control the output current and voltage levels of switch-mode battery chargers and power supplies.
- What is the voltage of the internal reference in the NCP4300ADR2G?
The internal reference voltage is 2.60 V.
- How many operational amplifiers are included in the NCP4300ADR2G?
The device includes two operational amplifiers: one for voltage control and one independent op-amp for current control or general-purpose use.
- What is the typical input offset voltage of the op-amps in the NCP4300ADR2G?
The typical input offset voltage is 0.5 mV.
- What is the operating temperature range of the NCP4300ADR2G?
The operating ambient temperature range is from 0°C to 105°C.
- What is the maximum supply voltage for the NCP4300ADR2G?
The maximum supply voltage is 36 V.
- What is the typical supply current per op-amp at VCC = 5.0 V?
The typical supply current per op-amp is 210 μA.
- What is the unity gain bandwidth of the op-amps in the NCP4300ADR2G?
The unity gain bandwidth is typically 0.7 MHz.
- What are the typical applications of the NCP4300ADR2G?
The device is typically used in battery chargers and switch-mode power supplies.
- In what package is the NCP4300ADR2G available?
The device is available in an 8-lead surface mount package (SOIC-8).
