Overview
The LP5907SNX-2.8/NOPB is a low-noise, low-dropout (LDO) linear voltage regulator produced by Texas Instruments. This device is designed to supply up to 250 mA of output current and is particularly suited for applications requiring low noise, high power supply rejection ratio (PSRR), and low quiescent current. The LP5907 is available with fixed output voltages ranging from 1.2 V to 4.5 V in 25 mV steps, with the specific model LP5907SNX-2.8/NOPB providing a fixed output voltage of 2.8 V. It operates with an input voltage range of 2.2 V to 5.5 V and is stable with 1 µF ceramic input and output capacitors, eliminating the need for a separate noise bypass capacitor.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.2 | 5.5 | V | |
| Output Voltage Range | 1.2 | 4.5 | V | |
| Output Voltage Tolerance | -2 | 2 | % | |
| Maximum Output Current | 250 | mA | ||
| Quiescent Current (Enabled) | 12 | µA | ||
| Dropout Voltage (Typical) | 120 | mV | ||
| Output Voltage Noise (RMS) | <6.5 | µVRMS | ||
| PSRR at 1 kHz | 82 | dB | ||
| Operating Junction Temperature | -40 | 125 | °C | |
| Input Capacitance | 0.7 | 1 | µF | |
| Output Capacitance | 0.7 | 1 | 10 | µF |
Key Features
- Low output voltage noise: < 6.5 µVRMS
- High PSRR: 82 dB at 1 kHz
- Low quiescent current: 12 µA (enabled)
- Low dropout voltage: 120 mV (typical)
- No noise bypass capacitor required
- Remote output capacitor placement
- Thermal-overload and short-circuit protection
- Operating junction temperature range: -40°C to 125°C
- Stable with 1 µF ceramic input and output capacitors
Applications
- Smartphones and tablets
- Communications equipment
- Digital still cameras and audio devices
- Portable and battery-powered equipment
- Portable medical equipment
- Smart meters and field transmitters
- RF, PLL, VCO, and clock power supplies
- IP cameras and drones
Q & A
- What is the maximum output current of the LP5907SNX-2.8/NOPB? The maximum output current is 250 mA.
- What is the input voltage range for this device? The input voltage range is from 2.2 V to 5.5 V.
- What is the output voltage tolerance of the LP5907SNX-2.8/NOPB? The output voltage tolerance is ±2%.
- Does the LP5907SNX-2.8/NOPB require a noise bypass capacitor? No, it does not require a separate noise bypass capacitor.
- What is the typical quiescent current of the LP5907SNX-2.8/NOPB when enabled? The typical quiescent current is 12 µA.
- What is the dropout voltage of the LP5907SNX-2.8/NOPB? The typical dropout voltage is 120 mV.
- What is the PSRR of the LP5907SNX-2.8/NOPB at 1 kHz? The PSRR is 82 dB at 1 kHz.
- What are the recommended capacitors for input and output stability? The device is stable with 1 µF ceramic input and output capacitors.
- Does the LP5907SNX-2.8/NOPB have thermal protection? Yes, it has thermal-overload and short-circuit protection.
- What is the operating junction temperature range of the LP5907SNX-2.8/NOPB? The operating junction temperature range is from -40°C to 125°C.
