Overview
The LP5907MFX-4.5/NOPB is a low-noise, low-quiescent current Linear Voltage Regulator (LDO) produced by Texas Instruments. This device is designed to supply up to 250mA of output current and is optimized for use in RF and analog circuits. It features a wide input voltage range of 2.2V to 5.5V and offers fixed output voltages from 1.2V to 4.5V in 25mV steps. The LP5907 is known for its low output voltage noise, high Power Supply Rejection Ratio (PSRR), and low dropout voltage, making it suitable for a variety of applications requiring stable and low-noise power supply.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range | 2.2 | 5.5 | V | |
| Output Voltage Range | 1.2 | 4.5 | V | |
| Output Current | 0 | 250 | mA | |
| Output Voltage Tolerance | -2 | 2 | % | |
| Quiescent Current (Enabled) | 12 | μA | ||
| Dropout Voltage (Typical) | 120 | mV | ||
| Output Voltage Noise (RMS) | < 6.5 | μVRMS | ||
| PSRR at 1kHz | 82 | dB | ||
| Operating Junction Temperature | -40 | 125 | °C | |
| Thermal Shutdown Temperature | 160 | °C |
Key Features
- Low output voltage noise: < 6.5µVRMS
- High PSRR: 82dB at 1kHz
- Low quiescent current: 12μA (enabled)
- Low dropout voltage: 120mV (typical)
- Stable with 1µF ceramic input and output capacitors
- No noise bypass capacitor required
- Remote output capacitor placement
- Thermal-overload and short-circuit protection
- Operating junction temperature range: -40°C to 125°C
Applications
- Smartphones
- Tablets
- Communications equipment
- Digital still cameras
- Factory automation
Q & A
- What is the input voltage range of the LP5907?
The input voltage range of the LP5907 is from 2.2V to 5.5V.
- What are the available output voltage options for the LP5907?
The LP5907 offers fixed output voltages from 1.2V to 4.5V in 25mV steps.
- What is the maximum output current of the LP5907?
The maximum output current of the LP5907 is 250mA.
- What is the typical quiescent current of the LP5907 when enabled?
The typical quiescent current of the LP5907 when enabled is 12μA.
- Does the LP5907 require a noise bypass capacitor?
No, the LP5907 does not require a noise bypass capacitor.
- What is the PSRR of the LP5907 at 1kHz?
The PSRR of the LP5907 at 1kHz is 82dB.
- What is the operating junction temperature range of the LP5907?
The operating junction temperature range of the LP5907 is from -40°C to 125°C.
- Does the LP5907 have thermal-overload and short-circuit protection?
- What types of capacitors are recommended for use with the LP5907?
X7R capacitors are recommended, but X5R, Y5V, and Z5U capacitors can also be used with consideration of the application and conditions.
- Can the output capacitor be placed remotely in the LP5907?
