Overview
The LP5907YKGR-2.85 is a 250mA, ultra-low-noise, low-IQ Linear Voltage Regulator (LDO) 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), and low quiescent current. The LP5907 is stable with 1-µF ceramic input and output capacitors and does not require a separate noise bypass capacitor. It features remote output capacitor placement, thermal-overload and short-circuit protection, and operates over a junction temperature range of –40°C to 125°C.
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 1 kHz | 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 to 10 | µF |
| Package Options | DSBGA, SOT-23, X2SON |
Key Features
- Ultra-low output voltage noise: < 6.5 µVRMS
- 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
- Fixed output voltages from 1.2 V to 4.5 V in 25-mV steps
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 2.2 V to 5.5 V.
- What is the maximum output current of the LP5907?
The LP5907 can supply up to 250 mA of output current.
- What is the typical dropout voltage of the LP5907?
The typical dropout voltage of the LP5907 is 120 mV.
- Does the LP5907 require a noise bypass capacitor?
No, the LP5907 does not require a noise bypass capacitor.
- What are the available package options for the LP5907?
The LP5907 is available in DSBGA, SOT-23, and X2SON packages.
- What is the operating junction temperature range of the LP5907?
The operating junction temperature range of the LP5907 is from –40°C to 125°C.
- What is the PSRR of the LP5907 at 1 kHz?
The PSRR of the LP5907 at 1 kHz is 82 dB.
- What is the quiescent current of the LP5907 when enabled?
The quiescent current of the LP5907 when enabled is 12 µA.
- Can the output capacitor be placed remotely from the LP5907?
- What are some typical applications of the LP5907?
The LP5907 is typically used in mobile phones, tablets, digital cameras, portable medical equipment, smart meters, and other battery-powered devices.
