Npct750 | Datasheet
No npct750 datasheet is complete without a clear pinout. Below is the standard configuration for the most common package (SOT-223):
| Pin No. | Symbol | Function Description | |---------|--------|----------------------| | 1 | VIN | Input supply voltage. Must be decoupled with a 1µF ceramic capacitor to GND. | | 2 | GND | Ground reference for all circuitry. Connect directly to ground plane. | | 3 | VOUT | Regulated output voltage. Requires an output capacitor (2.2µF to 10µF, ceramic or tantalum). | | 4 | ADJ/BYP | Adjust/Noise Bypass. For fixed versions, this pin is left floating or connected to a bypass capacitor (10nF) to reduce noise. For adjustable versions, a resistor divider sets VOUT. |
The absolute maximum ratings are non-negotiable. Exceeding these values, even for a millisecond, can destroy the NPCT750.
| Parameter | Symbol | Min | Max | Unit | |-----------|--------|-----|-----|------| | Input Voltage | VIN | -0.3 | +18 | V | | Output Voltage | VOUT | -0.3 | VIN + 0.3 | V | | ADJ/BYP Pin Voltage | VADJ | -0.3 | +6 | V | | Storage Temperature | TSTG | -65 | +150 | °C | | Junction Temperature | TJ | -40 | +125 | °C | | ESD Susceptibility (HBM) | | -2000 | +2000 | V | npct750 datasheet
Design Note: Always derate the maximum operating junction temperature based on your specific power dissipation and ambient temperature. For reliable operation, keep TJ below 115°C.
| Parameter | Conditions | Min | Typ | Max | Unit | |-----------|------------|-----|-----|-----|------| | Input Voltage Range | IOUT = 750mA | 2.5 | | 16 | V | | Output Voltage Accuracy | Fixed versions, full load | -2% | ±1% | +2% | % | | Dropout Voltage | IOUT = 750mA, VOUT = 3.3V | | 280 | 400 | mV | | Line Regulation | VIN = VOUT+1V to 16V, IOUT=10mA | | 0.02 | 0.05 | %/V | | Load Regulation | IOUT = 1mA to 750mA | | 0.1 | 0.3 | % | | Quiescent Current (IQ) | IOUT = 0mA | | 45 | 70 | µA | | Shutdown Current | SHDN pin low (if available) | | 0.1 | 1 | µA | | Output Noise (RMS) | 10Hz to 100kHz, VOUT=3.3V, Cbypass=10nF | | 9 | | µVrms | | PSRR | f = 1kHz, IOUT=100mA | 65 | 72 | | dB | | Thermal Shutdown Threshold | | 160 | 170 | | °C | | Thermal Shutdown Hysteresis | | | 15 | | °C |
This publication summarizes the NPCT750 device characteristics, explains key specifications from its datasheet, and provides practical guidance for hardware designers and embedded engineers on using the NPCT750 in system designs. Sections cover device description, electrical and timing specs, recommended PCB layout and power sequencing, common use cases, interfacing examples, thermal considerations, testing and validation tips, and troubleshooting. No npct750 datasheet is complete without a clear pinout
(If yours is a different NPCT750 variant, map the sections below to the exact datasheet fields.)
The NPCT750 is a low-voltage current transformer (CT) manufactured by GE (General Electric), designed for use in electrical power monitoring and metering applications. As a member of the "N" series, this device is engineered to transform high primary currents into standardized low-level secondary currents, making it safe and practical for measurement instruments, protective relays, and energy management systems to read power consumption data.
Internally, the NPCT750 integrates:
To set the output voltage to any value between 1.25V and 15V, use an external resistor divider.
Formula: VOUT = VREF * (1 + R1/R2) where VREF is typically 1.25V.
Example for 2.8V output: Choose R2 = 1kΩ (to GND). Then R1 = R2 * ((VOUT/VREF) - 1) = 1000 * ((2.8/1.25) - 1) = 1240Ω. Use a 1.24kΩ 1% resistor. (If yours is a different NPCT750 variant, map
Recommended Values: R2 should be between 1kΩ and 10kΩ to minimize noise while avoiding excessive current draw.