Overview
The LP5907UVX-4.5/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 low noise, high Power Supply Rejection Ratio (PSRR), low quiescent current, and low line or load transient response figures. The LP5907 can supply up to 250mA of output current and operates within an input voltage range of 2.2V to 5.5V, with fixed output voltages available from 1.2V to 4.5V in 25mV steps.
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 |
| Operating Junction Temperature | -40 to 125 | °C |
| 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 |
| Package Types | DSBGA (4), SOT-23 (5), X2SON (4) |
Key Features
- Stable with 1-µF ceramic input and output capacitors; no separate noise bypass capacitor required.
- Remote output capacitor placement.
- Thermal-overload and short-circuit protection.
- Low output voltage noise: < 6.5µVRMS.
- High PSRR: 82dB at 1kHz.
- Very low quiescent current (enabled): 12µA.
- Low dropout voltage: 120mV (typical).
- Enable pin for on/off control with automatic output discharge when disabled.
Applications
- Mobile Phones, 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
- Drones
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 are the available output voltage options for the LP5907?
The LP5907 is available with fixed output voltages from 1.2V to 4.5V in 25mV steps.
- Does the LP5907 require a noise bypass capacitor?
No, the LP5907 does not require a separate noise bypass capacitor. It is stable with 1-µF ceramic input and output capacitors.
- What is the typical dropout voltage of the LP5907?
The typical dropout voltage of the LP5907 is 120mV.
- What is the PSRR of the LP5907 at 1 kHz?
The PSRR of the LP5907 at 1 kHz is 82dB.
- What is the quiescent current of the LP5907 when enabled?
The quiescent current of the LP5907 when enabled is 12µA.
- Does the LP5907 have thermal protection?
Yes, the LP5907 has thermal-overload and short-circuit protection).
- What are the typical operating junction temperature ranges for the LP5907?
The operating junction temperature range for the LP5907 is -40°C to 125°C).
- Can the LP5907 be controlled using an enable pin?
Yes, the LP5907 has an enable pin for on/off control, and it includes automatic output discharge when disabled).
