Overview
The NCP133AMX150TCG is a 500 mA Very Low Dropout (VLDO) CMOS voltage regulator produced by onsemi. This device is designed for space-constrained, noise-sensitive applications and is particularly suited for battery-operated portable equipment. It features a separate bias supply voltage (VBIAS) and an NMOS pass transistor, which provides stable and accurate output voltage with low noise. The regulator is available in both fixed and adjustable voltage versions, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (VIN) | 0.8 | - | 5.5 | V |
| Bias Voltage Range (VBIAS) | 2.4 | - | 5.5 | V |
| Output Voltage Range (Fixed) | 0.8 | - | 2.1 | V |
| Output Voltage Range (Adjustable) | 0.8 | - | 3.6 | V |
| Output Voltage Accuracy @ 25°C | - | ±0.5% | - | % |
| Output Voltage Accuracy over Temperature | - | ±1.5% | - | % |
| Dropout Voltage @ 500 mA | - | 140 | 250 | mV |
| Bias Input Current | - | 80 | 110 | μA |
| Bias Input Current in Disable Mode | - | 0.5 | 1 | μA |
| Enable Input Threshold Voltage (High) | - | 0.9 | - | V |
| Enable Input Threshold Voltage (Low) | - | 0.4 | - | V |
| Turn-On Time | - | 150 | - | μs |
| Power Supply Rejection Ratio (PSRR) @ 1 kHz | - | 70 | - | dB |
| Output Noise Voltage (Fixed Volt.) | - | 40 | - | μVRMS |
| Thermal Shutdown Threshold | - | 160 | - | °C |
Key Features
- Very Low Dropout Voltage: Typical 140 mV at 500 mA.
- Low Bias Input Current: Typical 80 μA.
- Low Bias Input Current in Disable Mode: Typical 0.5 μA.
- Logic Level Enable Input for ON/OFF Control.
- Output Active Discharge Option Available.
- Stable with a 2.2 μF Ceramic Capacitor.
- Available in XDFN6 - 1.2 mm x 1.2 mm x 0.4 mm Package.
- Pb-Free, Halogen Free/BFR Free and RoHS Compliant.
- Smooth Monotonic Start-Up and Controlled Voltage Rising to Limit Inrush Current.
- Internal Current Limitation and Thermal Shutdown Protection.
Applications
- Battery-powered Equipment.
- Smartphones, Tablets.
- Cameras, DVRs, Set-Top Boxes (STB), and Camcorders.
- Low-Voltage DC/DC Post-Regulator with ON/OFF Functionality.
Q & A
- What is the maximum output current of the NCP133AMX150TCG?
The maximum output current is 500 mA.
- What is the typical dropout voltage at 500 mA?
The typical dropout voltage at 500 mA is 140 mV.
- What is the bias input current in normal operation?
The typical bias input current is 80 μA.
- How does the enable input work?
The enable input is a logic level input that turns the regulator on or off. It has internal hysteresis and should be connected to VIN or VBIAS if not used.
- What is the thermal shutdown threshold?
The thermal shutdown threshold is 160°C, with the device turning back on when the temperature drops below 140°C.
- Is the NCP133AMX150TCG RoHS compliant?
Yes, the device is Pb-Free, Halogen Free/BFR Free and RoHS Compliant.
- What is the recommended output capacitor value?
The recommended output capacitor value is 2.2 μF (effective capacitance).
- Can the output voltage be adjusted?
Yes, the output voltage can be adjusted from 0.8 V to 3.6 V using two external resistors in the adjustable version.
- What is the package type of the NCP133AMX150TCG?
The device is available in an XDFN6 package, measuring 1.2 mm x 1.2 mm x 0.4 mm.
- What are some typical applications of the NCP133AMX150TCG?
Typical applications include battery-powered equipment, smartphones, tablets, cameras, DVRs, STB, and camcorders.
