Overview
The LM4132BMFX-2.5/NOPB, produced by Texas Instruments, is a precision low dropout voltage reference in a SOT-23 package. This device is part of the LM4132 family, which offers high accuracy and stability comparable to laser-trimmed bipolar references but in cost-effective CMOS technology. The LM4132 uses EEPROM registers to correct for curvature, temperature coefficient, and accuracy, ensuring high precision even after assembly into plastic packages. It is particularly suited for space-critical and battery-powered applications due to its low quiescent current and low dropout voltage.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage (VOUT) | 2.45 | 2.5 | 2.55 | V |
| Output Voltage Initial Accuracy (A Grade) | -0.05% | 0.05% | % | |
| Temperature Coefficient (A Grade) | 10 | 20 | ppm/°C | |
| Input Voltage Range | VREF + 400 mV | 5.5 V | V | |
| Quiescent Current (IQ) | 60 | 100 | µA | |
| Dropout Voltage (VIN - VOUT) | 175 | 400 | mV | |
| Short-Circuit Current (ISC) | 75 | mA | ||
| Enable Pin Maximum Low Input Level (VIL) | 35% (VIN) | V | ||
| Enable Pin Minimum High Input Level (VIH) | 65% (VIN) | V |
Key Features
- High accuracy and stability, comparable to laser-trimmed bipolar references, using CMOS technology.
- EEPROM registers for correction of curvature, temperature coefficient, and accuracy.
- No output capacitor or buffer amplifier required.
- Low quiescent current (60 µA) and low dropout voltage (400 mV).
- Available in five grades (A, B, C, D, E) for different accuracy and temperature coefficient specifications.
- Stable with low-ESR ceramic capacitors.
- SOT-23 packaging suitable for space-critical applications.
Applications
- Instrumentation and Process Control
- Test Equipment
- Data Acquisition Systems
- Base Stations
- Servo Systems
- Portable, Battery-Powered Equipment
- Automotive and Industrial
- Precision Regulators
- Battery Chargers
- Communications
- Medical Equipment
Q & A
- What is the output voltage range of the LM4132BMFX-2.5/NOPB?
The output voltage for the LM4132BMFX-2.5/NOPB is 2.5 V, with an initial accuracy range depending on the grade (e.g., ±0.05% for Grade A).
- What is the input voltage range for this device?
The input voltage range is from VREF + 400 mV to 5.5 V.
- Does the LM4132 require an output capacitor or buffer amplifier?
No, the LM4132 does not require an output capacitor or buffer amplifier.
- What is the quiescent current of the LM4132?
The quiescent current (IQ) is typically 60 µA.
- What is the dropout voltage of the LM4132?
The dropout voltage is typically 175 mV and can be up to 400 mV.
- What are the typical applications of the LM4132?
Typical applications include instrumentation, test equipment, data acquisition systems, base stations, servo systems, portable battery-powered equipment, automotive and industrial systems, precision regulators, battery chargers, communications, and medical equipment.
- What is the temperature coefficient of the LM4132?
The temperature coefficient varies by grade but is typically 10 ppm/°C for Grade A and up to 30 ppm/°C for Grade E.
- What is the short-circuit current of the LM4132?
The short-circuit current (ISC) is typically up to 75 mA.
- How does the LM4132 handle thermal hysteresis?
The LM4132 has a specified thermal hysteresis, which is the change in output voltage before and after cycling the device from –40°C to 125°C.
- What is the package type of the LM4132BMFX-2.5/NOPB?
The package type is SOT-23.
