Overview
The LM4132BMFX-3.3/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 the best 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 across various operating conditions.
This component is particularly suited for applications requiring low power consumption and high stability, making it ideal for battery-powered devices, instrumentation, and industrial systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage Initial Accuracy (C Grade) | -0.2% | 0% | 0.2% | % |
| Temperature Coefficient (C Grade) | - | 20 | - | ppm/°C |
| Supply Current | - | 60 | 100 | µA |
| Supply Current in Shutdown | - | 3 | 7 | µA |
| Line Regulation | - | 85 | - | ppm/V |
| Load Regulation | - | 25 | 120 | ppm/mA |
| Dropout Voltage | - | 175 | 400 | mV |
| Output Noise Voltage (0.1 Hz to 10 Hz) | - | 310 | - | µVPP |
| Short-Circuit Current | - | - | 75 | mA |
| Enable Pin Maximum Low Input Level | - | - | 35% (VIN) | V |
| Enable Pin Minimum High Input Level | - | - | 65% (VIN) | V |
Key Features
- Precision Voltage Reference: Offers high accuracy and stability comparable to the best laser-trimmed bipolar references but in cost-effective CMOS technology.
- Custom Voltage Options: Available in various output voltages from 1.8 V to 4.096 V.
- Low Dropout Voltage: Dropout voltage as low as 175 mV at 10 mA load current.
- Low Quiescent Current: Supply current of 60 µA, and 3 µA in shutdown mode.
- Stable with Low-ESR Ceramic Capacitors: No need for an output capacitor or buffer amplifier.
- Compact Packaging: SOT-23-5 package, ideal for space-critical applications.
- Temperature Stability: Low temperature coefficient of 20 ppm/°C.
Applications
- Instrumentation and Process Control: High precision and stability make it suitable for measurement and control systems.
- Test Equipment: Used in various test and measurement devices requiring stable voltage references.
- Data Acquisition Systems: Ensures accurate data acquisition in systems that require precise voltage levels.
- Base Stations: Used in telecommunications infrastructure for stable voltage supply.
- Servo Systems: Provides the necessary precision for servo control systems.
- Portable, Battery-Powered Equipment: Low power consumption and high accuracy make it ideal for battery-powered devices.
- Automotive and Industrial: Suitable for use in automotive and industrial environments due to its robust specifications.
- Precision Regulators: Used in applications requiring high precision voltage regulation.
- Battery Chargers: Ensures accurate charging voltages in battery charging systems.
- Communications: Used in various communication systems for stable voltage supply.
- Medical Equipment: High precision and reliability make it suitable for medical devices.
Q & A
- What is the output voltage range of the LM4132BMFX-3.3/NOPB?
The LM4132BMFX-3.3/NOPB is available with an output voltage of 3.3 V, but the LM4132 family offers custom voltage options from 1.8 V to 4.096 V.
- What is the typical supply current of the LM4132BMFX-3.3/NOPB?
The typical supply current is 60 µA, and 3 µA in shutdown mode.
- What is the dropout voltage of the LM4132BMFX-3.3/NOPB?
The dropout voltage is as low as 175 mV at a load current of 10 mA.
- Does the LM4132BMFX-3.3/NOPB require an output capacitor or buffer amplifier?
No, it does not require an output capacitor or buffer amplifier and is stable with low-ESR ceramic capacitors.
- What is the temperature coefficient of the LM4132BMFX-3.3/NOPB?
The temperature coefficient is 20 ppm/°C.
- In what package is the LM4132BMFX-3.3/NOPB available?
The LM4132BMFX-3.3/NOPB is available in a SOT-23-5 package.
- What are the typical applications of the LM4132BMFX-3.3/NOPB?
It is used in 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.
- How does the enable pin of the LM4132BMFX-3.3/NOPB work?
The enable pin uses an internal pull-up current source and can be left floating or triggered by an external source. It must be within a specified range relative to VIN.
- What is the output noise voltage of the LM4132BMFX-3.3/NOPB?
The output noise voltage is 310 µVPP from 0.1 Hz to 10 Hz.
- What is the short-circuit current of the LM4132BMFX-3.3/NOPB?
The short-circuit current is 75 mA.
