Overview
The LM4132AMF-3.3 from Texas Instruments is a precision low dropout voltage reference designed to offer high accuracy and stability in a compact SOT-23 package. This device is part of the LM4132 family, which utilizes CMOS technology to achieve performance comparable to laser-trimmed bipolar references but at a lower cost. The LM4132AMF-3.3 is particularly suited for applications requiring a stable 3.3V reference voltage with minimal power consumption and high reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Output Voltage Initial Accuracy (A Grade) | -0.05% | 0.05% | 0.05% | % |
| Temperature Coefficient (A Grade) | 10 | - | 20 | ppm/°C |
| Supply Current | - | 60 | 100 | µA |
| Shutdown Current | - | 3 | 7 | µA |
| Output Current | - | - | 20 | mA |
| Dropout Voltage | - | - | 400 | mV |
| Input Voltage Range | VREF + 400 mV | - | 5.5 V | V |
| Operating Temperature Range | -40°C | - | 125°C | °C |
Key Features
- Qualified for Automotive Applications (AEC-Q100 Qualified)
- Output Initial Voltage Accuracy: 0.05% (A Grade)
- Low Temperature Coefficient: 10 ppm/°C (A Grade)
- Low Supply Current: 60 µA
- Enable Pin Allowing a 3-µA Shutdown Mode
- 20-mA Output Current Capability
- Stable With Low-ESR Ceramic Capacitors
- Custom Voltage Options Available (1.8 V to 4.096 V)
- No Output Capacitor or Buffer Amplifier Required
Applications
- Instrumentation and Process Control
- Test Equipment
- Data Acquisition Systems
- Base Stations
- Servo Systems
- Portable, Battery-Powered Equipment
- Automotive and Industrial Systems
- Precision Regulators
- Battery Chargers
- Communications Equipment
- Medical Equipment
Q & A
- What is the output voltage accuracy of the LM4132AMF-3.3?
The output voltage initial accuracy of the LM4132AMF-3.3 (A Grade) is 0.05%.
- What is the temperature coefficient of the LM4132AMF-3.3?
The temperature coefficient of the LM4132AMF-3.3 (A Grade) is 10 ppm/°C over the 0°C to 85°C range and 20 ppm/°C over the –40°C to 125°C range.
- What is the supply current of the LM4132AMF-3.3?
The supply current of the LM4132AMF-3.3 is typically 60 µA.
- Can the LM4132AMF-3.3 be shut down?
- What is the maximum output current of the LM4132AMF-3.3?
The LM4132AMF-3.3 can deliver up to 20 mA of output current.
- Does the LM4132AMF-3.3 require an output capacitor or buffer amplifier?
No, the LM4132AMF-3.3 does not require an output capacitor or buffer amplifier.
- What is the input voltage range for the LM4132AMF-3.3?
The input voltage range for the LM4132AMF-3.3 is from VREF + 400 mV to 5.5 V.
- Is the LM4132AMF-3.3 suitable for automotive applications?
- What are the typical applications of the LM4132AMF-3.3?
The LM4132AMF-3.3 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 equipment, and medical equipment.
- What is the operating temperature range of the LM4132AMF-3.3?
The operating temperature range of the LM4132AMF-3.3 is from –40°C to 125°C.
