Overview
The LP5907UVX-1.2/NOPB is a 250-mA, ultra-low-noise, low-IQ linear voltage regulator produced by Texas Instruments. This device is designed to meet the stringent requirements of RF and analog circuits, offering low noise, high power supply rejection ratio (PSRR), low quiescent current, and low line or load transient response figures. The LP5907 is available in various packages, including DSBGA, X2SON, and SOT-23, and operates over a junction temperature range of –40°C to 125°C. It is particularly suited for applications where noise performance is critical, such as in mobile phones, tablets, digital cameras, and other portable and battery-powered equipment.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.2 to 5.5 | V |
| Output Voltage Range | 1.2 to 4.5 | V |
| Output Current | Up to 250 | mA |
| Output Voltage Noise | < 6.5 | µVRMS |
| PSRR at 1 kHz | 82 | dB |
| Output Voltage Tolerance | ±2% | |
| Quiescent Current (Enabled) | 12 | µA |
| Dropout Voltage (Typical) | 120 | mV |
| Operating Junction Temperature | –40 to 125 | °C |
| Package Types | DSBGA, X2SON, SOT-23 |
Key Features
- Low output voltage noise: < 6.5 µVRMS
- High PSRR: 82 dB at 1 kHz
- Very low quiescent current (enabled): 12 µA
- Low dropout voltage: 120 mV (typical)
- Stable with 1-µF 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
- Enable pin for on/off control with automatic output discharge
Applications
- Mobile phones and tablets
- Digital 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 input voltage range of the LP5907?
The input voltage range of the LP5907 is from 2.2 V to 5.5 V.
- What is the maximum output current of the LP5907?
The LP5907 can supply up to 250 mA of output current.
- What is the typical dropout voltage of the LP5907?
The typical dropout voltage of the LP5907 is 120 mV.
- Does the LP5907 require a noise bypass capacitor?
No, the LP5907 does not require a noise bypass capacitor.
- 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.
- What is the PSRR of the LP5907 at 1 kHz?
The PSRR of the LP5907 at 1 kHz is 82 dB.
- What are the package options available for the LP5907?
The LP5907 is available in DSBGA, X2SON, and SOT-23 packages.
- How does the enable pin function on the LP5907?
The enable pin allows the device to be turned on or off. A voltage above the VIH threshold enables the device, while a voltage below the VIL threshold disables it and activates the automatic output discharge.
- What is the quiescent current of the LP5907 when enabled?
The quiescent current of the LP5907 when enabled is 12 µA.
- What are some typical applications of the LP5907?
The LP5907 is typically used in mobile phones, tablets, digital cameras, portable medical equipment, and other applications requiring low noise and high PSRR).
