Overview
The NCP59748MN2ADJTBG is a dual-rail, very low-dropout (VLDO) linear voltage regulator produced by onsemi. This device is capable of providing an output current in excess of 1.5 A with a dropout voltage of 60 mV at full load current. It features adjustable output voltage, programmable soft-start, and internal protection mechanisms such as thermal shutdown and current limiting. The regulator is stable with ceramic and other types of output capacitors greater than or equal to 2.2 µF. It is available in a QFN20 5x5 package, making it suitable for various applications requiring high current and low dropout voltage.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | VIN | 0.8 | - | 5.5 | V |
| Bias Voltage Range | VBIAS | 2.7 | - | 5.5 | V |
| Output Voltage Range | VOUT | 0.8 | - | 3.6 | V |
| Output Current | IOUT | - | - | 1.5 A | A |
| Dropout Voltage (VIN) | VDO | - | 60 mV | 165 mV | mV |
| Dropout Voltage (VBIAS) | VDO | - | 1.31 V | 1.6 V | V |
| Junction Temperature Range | TJ | -40°C | - | 125°C | °C |
| Thermal Shutdown Temperature | TSD | - | - | 165°C | °C |
Key Features
- Output current in excess of 1.5 A
- Low dropout voltage of 60 mV at full load current
- Adjustable output voltage from 0.8 V to 3.6 V
- Programmable soft-start for controlled voltage rising and reduced inrush current
- Open drain Power Good output for VOUT monitoring and sequencing
- Fast transient response and stable operation with any type of output capacitor ≥ 2.2 µF
- Internal protection features including current limiting and thermal shutdown
- Enable input with internal hysteresis and deglitch filter
- Output active discharge transistor to pull the output to GND when the device is disabled
Applications
- Consumer and industrial equipment point of load regulation
- FPGA, DSP, and logic power supplies
- Switching power supply post-regulation
Q & A
- What is the maximum output current of the NCP59748MN2ADJTBG?
The maximum output current is in excess of 1.5 A.
- What is the dropout voltage of the NCP59748MN2ADJTBG?
The dropout voltage is 60 mV at full load current.
- What is the range of the adjustable output voltage?
The output voltage can be adjusted from 0.8 V to 3.6 V.
- Does the NCP59748MN2ADJTBG have programmable soft-start?
Yes, it features programmable soft-start controlled by an external capacitor.
- What type of protection mechanisms does the NCP59748MN2ADJTBG have?
The device includes internal protection features such as thermal shutdown and current limiting.
- What is the purpose of the Power Good (PG) output?
The Power Good output is used for VOUT monitoring and sequencing of other devices.
- What is the recommended type and value of output capacitors for the NCP59748MN2ADJTBG?
The device is stable with any type of output capacitor ≥ 2.2 µF.
- How does the Enable input function on the NCP59748MN2ADJTBG?
The Enable input turns the regulator on or off, with internal hysteresis and deglitch filter.
- What happens to the output when the device is disabled?
The output is pulled to GND through an internal discharge transistor.
- What is the thermal shutdown temperature of the NCP59748MN2ADJTBG?
The thermal shutdown temperature is 165°C.
