Overview
The LP5907SNX-2.2/NOPB is a low-noise Linear Low-Dropout (LDO) regulator produced by Texas Instruments. This device is designed to meet the stringent requirements of RF and analog circuits, offering class-leading noise performance, high Power Supply Rejection Ratio (PSRR), low quiescent current, and low line or load transient response figures. The LP5907 can supply up to 250 mA of output current and operates within an input voltage range of 2.2 V to 5.5 V, with fixed output voltages available from 1.2 V to 4.5 V in 25 mV steps.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.2 V to 5.5 V |
| Output Voltage Range | 1.2 V to 4.5 V |
| Output Current | Up to 250 mA |
| Operating Junction Temperature | –40°C to 125°C |
| Output Voltage Noise | < 6.5 µVRMS |
| PSRR | 82 dB at 1 kHz |
| Output Voltage Tolerance | ±2% |
| Quiescent Current (Enabled) | 12 µA |
| Dropout Voltage | 120 mV (typical) |
| Package Types | DSBGA, X2SON, SOT-23 |
Key Features
- No noise bypass capacitor required
- Remote output capacitor placement
- Thermal-overload and short-circuit protection
- Stable with 1-µF ceramic input and output capacitors
- Low output voltage noise: < 6.5 µVRMS
- High PSRR: 82 dB at 1 kHz
- Very low quiescent current: 12 µA (enabled)
- Low dropout voltage: 120 mV (typical)
- 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
- Communications Equipment and Factory Automation
Q & A
- What is the input voltage range of the LP5907?
The input voltage range of the LP5907 is 2.2 V to 5.5 V.
- What are the available output voltage ranges for the LP5907?
The LP5907 offers fixed output voltages from 1.2 V to 4.5 V in 25 mV steps.
- What is the maximum output current of the LP5907?
The LP5907 can supply up to 250 mA of output current.
- 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 is –40°C to 125°C.
- What is the typical dropout voltage of the LP5907?
The typical dropout voltage is 120 mV.
- What are the key protection features of the LP5907?
The LP5907 includes thermal-overload and short-circuit protection.
- Can the output capacitor be placed remotely from the LP5907?
- How does the enable pin function on the LP5907?
The enable pin allows for on/off control of the regulator, with automatic output discharge when disabled.
- What are the typical applications of the LP5907?
The LP5907 is used in applications such as smartphones, tablets, digital cameras, portable medical equipment, and RF power supplies.
