Overview
The Texas Instruments LP5907MFX-1.5/NOPB is a high-performance, low-noise, low-dropout (LDO) linear voltage regulator. This device is designed to meet the stringent requirements of RF and analog circuits, offering exceptional noise performance, high power supply rejection ratio (PSRR), and low quiescent current. The LP5907MFX-1.5/NOPB is particularly suited for applications where low noise and high stability are crucial, such as in mobile phones, tablets, digital cameras, and portable medical equipment.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP5907MFX-1.5/NOPB |
| Package | SOT-23-5 |
| Input Voltage Range | 2.2 V to 5.5 V |
| Output Voltage | Fixed 1.5 V |
| Output Current | Up to 250 mA |
| Operating Junction Temperature | –40°C to 125°C |
| PSRR | 82 dB at 1 kHz |
| Output Voltage Noise | < 6.5 µVRMS |
| Quiescent Current (Enabled) | 12 µA |
| Dropout Voltage | 120 mV (typical) |
| Output Voltage Tolerance | ±2% |
| Thermal-Overload and Short-Circuit Protection | Yes |
Key Features
- Ultra-low noise performance without a noise bypass capacitor
- High PSRR of 82 dB at 1 kHz
- Low quiescent current of 12 µA when enabled
- Low dropout voltage of 120 mV (typical)
- Stable with 1-µF ceramic input and output capacitors
- Remote output capacitor placement capability
- Thermal-overload and short-circuit protection
- Enable pin for on/off control with automatic output discharge when disabled
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 LP5907MFX-1.5/NOPB?
The input voltage range is from 2.2 V to 5.5 V.
- What is the fixed output voltage of the LP5907MFX-1.5/NOPB?
The fixed output voltage is 1.5 V.
- What is the maximum output current of the LP5907MFX-1.5/NOPB?
The maximum output current is up to 250 mA.
- What is the operating junction temperature range of the LP5907MFX-1.5/NOPB?
The operating junction temperature range is from –40°C to 125°C).
- Does the LP5907MFX-1.5/NOPB require a noise bypass capacitor?
No, it does not require a noise bypass capacitor).
- What is the PSRR of the LP5907MFX-1.5/NOPB at 1 kHz?
The PSRR is 82 dB at 1 kHz).
- What is the quiescent current when the device is enabled?
The quiescent current is 12 µA when enabled).
- Does the LP5907MFX-1.5/NOPB have thermal-overload and short-circuit protection?
Yes, it has thermal-overload and short-circuit protection).
- How does the enable pin function on the LP5907MFX-1.5/NOPB?
The enable pin allows for on/off control, and when disabled, it activates an automatic output discharge).
- What type of capacitors are recommended for input and output stability?
1-µF ceramic capacitors are recommended for both input and output stability).
