Overview
The LP5907YKGR-2.0, produced by Texas Instruments, is a 250mA, ultra-low-noise, low-IQ linear voltage regulator (LDO) designed to meet the stringent requirements of RF and analog circuits. This device is optimized for low noise, high power supply rejection ratio (PSRR), low quiescent current, and low line or load transient response figures. It is particularly suited for applications where noise performance is critical, such as in smartphones, tablets, communications equipment, digital cameras, and factory automation.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.2 V to 5.5 V |
| Output Voltage Range | 1.2 V to 4.5 V (in 25-mV steps) |
| 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°C to 125°C |
| Package Options | DSBGA, SOT-23, X2SON |
Key Features
- Stable operation with 1-µF ceramic input and output capacitors; no separate noise bypass capacitor required.
- Remote output capacitor placement allowed.
- Thermal-overload and short-circuit protection.
- Low output voltage noise and high PSRR.
- Very low quiescent current and low dropout voltage.
- Enable pin for on/off control with automatic output discharge when disabled.
- Available in industry-standard packages such as DSBGA, SOT-23, and X2SON.
Applications
- Smartphones and tablets.
- Communications equipment and digital still cameras.
- Factory automation and 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-2.0?
The input voltage range is from 2.2 V to 5.5 V.
- What is the output voltage range of the LP5907YKGR-2.0?
The output voltage range is from 1.2 V to 4.5 V in 25-mV steps.
- How much output current can the LP5907YKGR-2.0 supply?
The device can supply up to 250 mA of output current.
- What is the typical dropout voltage of the LP5907YKGR-2.0?
The typical dropout voltage is 120 mV.
- Does the LP5907YKGR-2.0 require a noise bypass capacitor?
No, it does not require a separate noise bypass capacitor.
- What are the package options available for the LP5907YKGR-2.0?
The device is available in DSBGA, SOT-23, and X2SON packages.
- What is the operating junction temperature range of the LP5907YKGR-2.0?
The operating junction temperature range is from –40°C to 125°C.
- How does the enable pin function on the LP5907YKGR-2.0?
The enable pin allows the device to be turned on or off. A voltage above the VIH threshold enables the device, while a voltage below the VIL threshold disables it and activates an output discharge circuit.
- What kind of protection does the LP5907YKGR-2.0 offer?
The device offers thermal-overload and short-circuit protection.
- What are some typical applications of the LP5907YKGR-2.0?
Typical applications include smartphones, tablets, communications equipment, digital cameras, and factory automation.
