Overview
The LP5951MGX-3.3/NOPB is a high-performance linear voltage regulator IC manufactured by Texas Instruments. This device is designed to meet the requirements of portable battery-powered systems, providing a regulated output voltage and low quiescent current. It is particularly suited for applications where a stable and efficient power supply is crucial, such as in portable electronics, consumer electronics, industrial equipment, and automotive systems.
The regulator features a fixed 3.3V output voltage, an input voltage range of 1.8V to 5.5V, and a maximum output current of 150mA. It is available in a small SC70-5 package, making it ideal for space-constrained designs.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SC-70-5 |
| Pins | 5 |
| Input Voltage Range | 1.8 V to 5.5 V |
| Output Voltage | 3.3 V (fixed) |
| Maximum Output Current | 150 mA |
| Quiescent Current | 29 µA (typical), 55 µA (maximum) |
| Power Supply Rejection Ratio (PSRR) | –60 dB at 1 kHz (typical) |
| Line Transient Response | ±2 mV (typical) |
| Load Transient Response | 50 mVpp (typical) |
| Dropout Voltage | 0.35 V at 150 mA |
| Operating Temperature Range | –40°C to 125°C |
| Protection Features | Thermal Overload, Short-Circuit, Overcurrent Protection |
Key Features
- Low quiescent current of 29 µA (typical) and less than 1 nA in shutdown mode
- High power supply rejection ratio (PSRR) of –60 dB at 1 kHz
- Fast turn-on time of 30 µs (typical)
- Logic-controlled enable with 0.4 V/0.9 V thresholds
- Excellent line and load transient responses
- Internal protection against short-circuit currents and over-temperature conditions
- Small SC70-5 and SOT-23-5 packages
- Compliant with RoHS standards and has a Moisture Sensitivity Level (MSL) of 1
Applications
- Portable electronics (e.g., smartphones, tablets, handheld devices)
- Consumer electronics (e.g., TVs, audio equipment, gaming consoles)
- Industrial equipment (e.g., control systems, sensors, automation devices)
- Automotive systems (e.g., infotainment systems, navigation, safety systems)
- Wireless communications equipment (e.g., routers, modems, wireless sensors)
Q & A
- What is the input voltage range of the LP5951MGX-3.3/NOPB?
The input voltage range is from 1.8 V to 5.5 V.
- What is the fixed output voltage of the LP5951MGX-3.3/NOPB?
The fixed output voltage is 3.3 V.
- What is the maximum output current of the LP5951MGX-3.3/NOPB?
The maximum output current is 150 mA.
- What is the quiescent current of the LP5951MGX-3.3/NOPB?
The typical quiescent current is 29 µA, and it can be as low as less than 1 nA in shutdown mode.
- What protection features does the LP5951MGX-3.3/NOPB have?
The device features thermal overload, short-circuit, and overcurrent protection.
- What is the operating temperature range of the LP5951MGX-3.3/NOPB?
The operating temperature range is from –40°C to 125°C.
- What package types are available for the LP5951MGX-3.3/NOPB?
The device is available in SC70-5 and SOT-23-5 packages.
- Is the LP5951MGX-3.3/NOPB RoHS compliant?
Yes, the device is RoHS compliant and has a Moisture Sensitivity Level (MSL) of 1.
- What is the typical turn-on time of the LP5951MGX-3.3/NOPB?
The typical turn-on time is 30 µs.
- How does the enable feature work on the LP5951MGX-3.3/NOPB?
The enable feature is logic-controlled with thresholds of 0.4 V and 0.9 V.
