Overview
The LP5907SNX-4.0/NOPB is a low-noise, low-quiescent current Linear Low-Dropout (LDO) regulator 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 low output voltage noise, high Power Supply Rejection Ratio (PSRR), and low line or load transient response, 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 | 120 | mV | ||
| Output Voltage Noise | < 6.5 | μVRMS | ||
| PSRR at 1kHz | 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: < 6.5μVRMS
- 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
- Fixed output voltages from 1.2V to 4.5V in 25mV steps
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 LP5907 can supply up to 250mA of output current.
- What is the typical quiescent current of the LP5907 when enabled?
The typical quiescent current when enabled is 12μA.
- Does the LP5907 require a noise bypass capacitor?
No, the LP5907 does not require a separate noise bypass capacitor.
- What is the operating junction temperature range of the LP5907?
The operating junction temperature range is from -40°C to 125°C.
- What are the fixed output voltage options for the LP5907?
The fixed output voltage options range from 1.2V to 4.5V in 25mV steps.
- What type of capacitors are recommended for use with 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 dropout voltage of the LP5907?
The typical dropout voltage is 120mV.
- How can I design a custom circuit using the LP5907?
You can create a custom design using the LP5907 with the WEBENCH® Power Designer tool.
