Overview
The LP5907YKGR-2.825 is a low-noise, low-dropout linear voltage regulator (LDO) produced by Texas Instruments. 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 LP5907 can supply up to 250mA of output current and operates over 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 |
| Output Voltage Noise | < 6.5 | µVRMS |
| PSRR at 1kHz | 82 | dB |
| Output Voltage Tolerance | ±2% | % |
| Quiescent Current (Enabled) | 12 | µA |
| Dropout Voltage (Typical) | 120 | mV |
| Operating Junction Temperature | –40 to 125 | °C |
| Input Capacitance | 1 | µF |
| Output Capacitance | 1 | µF |
Key Features
- Stable operation with 1µF ceramic input and output capacitors without a separate noise bypass capacitor.
- Remote output capacitor placement capability.
- Thermal-overload and short-circuit protection.
- Low output voltage noise: < 6.5µVRMS.
- High PSRR: 82dB at 1kHz.
- Very low quiescent current (IQ): 12µA (enabled).
- Low dropout voltage: 120mV (typical).
- Enable pin with internal 1MΩ resistor to GND for easy control.
- Available in various packages including DSBGA, SOT-23, and X2SON.
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 LP5907YKGR-2.825?
The input voltage range is from 2.2V to 5.5V.
- What is the maximum output current of the LP5907YKGR-2.825?
The maximum output current is up to 250mA.
- What is the typical dropout voltage of the LP5907YKGR-2.825?
The typical dropout voltage is 120mV.
- Does the LP5907YKGR-2.825 require a noise bypass capacitor?
No, it does not require a separate noise bypass capacitor.
- What is the operating junction temperature range of the LP5907YKGR-2.825?
The operating junction temperature range is from –40°C to 125°C.
- What is the PSRR of the LP5907YKGR-2.825 at 1kHz?
The PSRR is 82dB at 1kHz.
- What is the quiescent current (IQ) of the LP5907YKGR-2.825 when enabled?
The quiescent current (IQ) is 12µA when enabled.
- Can the LP5907YKGR-2.825 be used in RF and analog circuits?
- What types of capacitors are recommended for use with the LP5907YKGR-2.825?
X7R capacitors are recommended, but X5R, Y5V, and Z5U capacitors can also be used with proper consideration of the application conditions.
- Does the LP5907YKGR-2.825 have thermal-overload and short-circuit protection?
