Overview
The NCP705MTADJTCG is a highly advanced Low Dropout (LDO) regulator from onsemi, designed to provide ultra-low quiescent current and ultra-low noise, making it ideal for noise-sensitive RF applications. This regulator is particularly suited for battery-operated portable devices, offering dynamic Iq management to optimize performance at light-load conditions. It features a high Power Supply Rejection Ratio (PSRR) and does not require an additional noise bypass capacitor to achieve its ultra-low noise performance.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Input Voltage | 2.5 | 5.5 | V | |
| Output Voltage Range (Adjustable) | 0.8 | 5.5 - VDROP | V | |
| Reference Voltage | 0.8 | V | ||
| Quiescent Current | 13 | μA | ||
| Noise (100 Hz to 100 kHz) | 12 | μVrms | ||
| Dropout Voltage (Typical at 500 mA) | 230 | 350 | mV | |
| Output Voltage Accuracy | -2 | +2 | % | |
| Power Supply Rejection Ratio (PSRR) at 1 kHz | 71 | dB | ||
| Thermal Shutdown Temperature | 160 | °C | ||
| Output Current Limit | 510 | 750 | 950 | mA |
Key Features
- Ultra-low quiescent current of 13 μA typical.
- Ultra-low noise: 12 μVrms from 100 Hz to 100 kHz.
- Very low dropout voltage: 230 mV typical at 500 mA.
- High Power Supply Rejection Ratio (PSRR): 71 dB at 1 kHz.
- Internal soft-start to limit the turn-on inrush current.
- Thermal shutdown and current limit protections.
- Stable with a 1 μF ceramic output capacitor.
- Active output discharge for fast turn-off.
Applications
- PDAs, Mobile Phones, GPS, Smartphones.
- Wireless Handsets, Wireless LAN, Bluetooth®, ZigBee®.
- Portable Medical Equipment.
- Other battery-powered applications.
Q & A
- What is the operating input voltage range of the NCP705MTADJTCG?
The operating input voltage range is from 2.5 V to 5.5 V. - What is the typical quiescent current of the NCP705MTADJTCG?
The typical quiescent current is 13 μA. - What is the noise level of the NCP705MTADJTCG from 100 Hz to 100 kHz?
The noise level is 12 μVrms from 100 Hz to 100 kHz. - What is the typical dropout voltage of the NCP705MTADJTCG at 500 mA?
The typical dropout voltage is 230 mV at 500 mA. - What is the Power Supply Rejection Ratio (PSRR) of the NCP705MTADJTCG at 1 kHz?
The PSRR is 71 dB at 1 kHz. - Does the NCP705MTADJTCG require an additional noise bypass capacitor?
No, it does not require an additional noise bypass capacitor to achieve ultra-low noise performance. - What are the thermal shutdown and hysteresis temperatures of the NCP705MTADJTCG?
The thermal shutdown temperature is 160°C, and the hysteresis is -20°C. - What is the output current limit of the NCP705MTADJTCG?
The output current limit is between 510 mA and 950 mA. - Is the NCP705MTADJTCG stable with a 1 μF ceramic output capacitor?
- What kind of protections does the NCP705MTADJTCG have?
The NCP705MTADJTCG has thermal shutdown and current limit protections. - What kind of protections does the NCP705MTADJTCG have?
