Overview
The LP5907UVE-3.2/NOPB, produced by Texas Instruments, is a 250mA, ultra-low-noise, low-quiescent current (IQ) Linear Low-Dropout (LDO) regulator. 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 line or load transient response figures. The LP5907 is stable with 1µF ceramic input and output capacitors and does not require a separate noise bypass capacitor. It is available in various industry-standard packages such as DSBGA, X2SON, and SOT-23, and operates over a junction temperature range of –40°C to 125°C.
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 | ||
| Output Voltage Noise (BW: 10Hz to 100kHz) | < 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 | 125 | °C | |
| Input Capacitance | 0.7 | 1 | 10 | µF |
| Output Capacitance | 0.7 | 1 | 10 | µF |
Key Features
- Ultra-low output voltage noise: < 6.5µVRMS (BW: 10Hz to 100kHz).
- High PSRR: 82dB at 1kHz.
- Low quiescent current: 12µA (enabled).
- Low dropout voltage: 120mV (typical).
- Stable with 1µF ceramic input and output capacitors; no separate noise bypass capacitor required.
- Remote output capacitor placement possible.
- Thermal-overload and short-circuit protection.
- Enable pin for on/off control with automatic output discharge when disabled.
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 is from 2.2V to 5.5V.
- What is the output voltage range of the LP5907? The output voltage range is from 1.2V to 4.5V in 25mV steps).
- What is the maximum output current of the LP5907? The maximum output current is 250mA).
- Does the LP5907 require a noise bypass capacitor? No, the LP5907 does not require a separate noise bypass capacitor).
- What is the typical quiescent current of the LP5907 when enabled? The typical quiescent current is 12µA when enabled).
- What is the dropout voltage of the LP5907? The typical dropout voltage is 120mV).
- What are the operating junction temperature limits of the LP5907? The operating junction temperature range is –40°C to 125°C).
- Can the output capacitor be placed remotely from the LP5907? Yes, the output capacitor can be placed up to 10 cm away from the LP5907 with proper PCB layout).
- Does the LP5907 have thermal-overload and short-circuit protection? Yes, the LP5907 includes thermal-overload and short-circuit protection).
- How is the enable pin used on the LP5907? The enable pin can be used to turn the device on or off, with automatic output discharge when disabled).
