Overview
The LP5907UVX-3.2/NOPB is a 250-mA, ultra-low-noise, low-IQ linear voltage regulator from 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 is available in a compact DSBGA (YKE) package with 4 pins and operates over a wide input voltage range of 2.2V to 5.5V, providing fixed output voltages from 1.2V to 4.5V in 25mV steps.
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 | 250 | mA | ||
| Quiescent Current (Enabled) | 12 | μA | ||
| Dropout Voltage (Typical) | 120 | mV | ||
| Output Voltage Noise | < 6.5 | μVRMS | ||
| PSRR at 1 kHz | 82 | dB | ||
| Operating Junction Temperature | -40 | 125 | °C | |
| Output Voltage Tolerance | ±2% | |||
| Package Type | DSBGA (YKE) | |||
| Pins | 4 |
Key Features
- Low noise: < 6.5 μVRMS output voltage noise
- High PSRR: 82 dB at 1 kHz
- Low quiescent current: 12 μA (enabled)
- Low dropout voltage: 120 mV (typical)
- Stable with 1-μF 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
- Enable pin for shutdown 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
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 250 mA of output current.
- What is the typical quiescent current of the LP5907 when enabled?
The typical quiescent current when enabled is 12 μA.
- What is the dropout voltage of the LP5907?
The typical dropout voltage is 120 mV.
- Does the LP5907 require a noise bypass capacitor?
No, the LP5907 does not require a noise bypass capacitor. It is stable with 1-μF ceramic input and output capacitors).
- What is the PSRR of the LP5907 at 1 kHz?
The PSRR at 1 kHz is 82 dB).
- What are the operating temperature ranges for the LP5907?
The operating junction temperature range is from –40°C to 125°C).
- Does the LP5907 have thermal-overload and short-circuit protection?
- How can the LP5907 be shut down?
The LP5907 can be shut down using the enable (EN) pin. When the EN pin is low, the regulator output is off and the device consumes less than 1 μA).
- What types 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).
