Overview
The LP5907UVX-2.2/NOPB is a low-noise, low-dropout (LDO) 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 minimal line or load transient response. The LP5907 can supply up to 250mA of output current and operates from an input supply voltage range of 2.2V to 5.5V, with an output voltage range of 1.2V to 4.5V. This specific model, LP5907UVX-2.2/NOPB, is configured to provide a fixed output voltage of 2.2V.
Key Specifications
| Parameter | Min | 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 | 25 | μA | |
| Dropout Voltage (Typical) | 120 | mV | ||
| PSRR at 1kHz | 82 | dB | ||
| Output Noise Voltage (BW = 10Hz to 100kHz) | 6.5 | μVRMS | ||
| Junction Temperature Range | -40 | 125 | °C |
Key Features
- Low noise: < 6.5µVRMS output noise voltage.
- High PSRR: 82dB at 1kHz.
- Low quiescent current: 12μA (enabled).
- Low dropout voltage: 120mV (typical) at 250mA output current.
- No noise bypass capacitor required.
- Remote output capacitor placement capability.
- Thermal-overload and short-circuit protection.
- Stable with 1µF ceramic input and output capacitors.
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 is the maximum output current of the LP5907?
The maximum output current of the LP5907 is 250mA.
- What is the typical dropout voltage of the LP5907?
The typical dropout voltage of the LP5907 is 120mV at 250mA output current.
- Does the LP5907 require a noise bypass capacitor?
No, the LP5907 does not require a noise bypass capacitor.
- What is the junction temperature range of the LP5907?
The junction temperature range of the LP5907 is from -40°C to 125°C.
- What type of capacitors are recommended for the LP5907?
X7R capacitors are recommended, but X5R, Y5V, and Z5U capacitors can also be used with proper consideration of the application and conditions.
- Does the LP5907 have thermal and short-circuit protection?
- What is the typical quiescent current of the LP5907 when enabled?
The typical quiescent current of the LP5907 when enabled is 25μA.
- What is the PSRR of the LP5907 at 1kHz?
The PSRR of the LP5907 at 1kHz is 82dB.
- What are some common applications of the LP5907?
The LP5907 is commonly used in smartphones, tablets, communications equipment, digital still cameras, and factory automation.
