Overview
The LM4041DQDBZR, produced by Texas Instruments, is a precision micropower shunt voltage reference. This component is part of the LM4041 series, which is designed to offer high accuracy and stability in a wide range of applications. The LM4041DQDBZR is available in an adjustable version, allowing the output voltage to be set between 1.225V and 10V using an external resistor divider. It is packaged in a space-saving SOT-23-3 package and is characterized for operation over an extended temperature range of –40°C to 125°C, making it suitable for both industrial and harsh environment applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Reference Voltage | 1.225 | V |
| Output Voltage Tolerance (D Grade) | ±1.0% | - |
| Temperature Coefficient | 150 ppm/°C | - |
| Minimum Cathode Current | 45 µA (typical) | µA |
| Maximum Operating Current | 12 mA | mA |
| Output Noise | 20 µVRMS (typical) | µVRMS |
| Operating Temperature Range | –40°C to 125°C | °C |
| Package Type | SOT-23-3 (DBZ) | - |
| Number of Pins | 3 | - |
Key Features
- Fixed and adjustable output voltages (1.225V to 10V)
- Tight output tolerances and low temperature coefficient
- Low output noise (20 µVRMS typical)
- Wide operating current range (45 µA to 12 mA)
- Stable with all capacitive loads; no output capacitor required
- Available in industrial and extended temperature ranges
- Space-saving SOT-23-3 and SC-70 packages, and TO-92 package for through-hole applications
Applications
- Computers and computer peripherals
- Battery chargers and battery-operated equipment
- Switch-mode power supplies
- Data acquisition systems
- Energy management and instrumentation
- Portable and handheld devices due to low power consumption
Q & A
- What is the typical output voltage of the LM4041DQDBZR?
The typical output voltage is 1.225V, but it can be adjusted between 1.225V and 10V using an external resistor divider.
- What is the temperature coefficient of the LM4041DQDBZR?
The temperature coefficient is 150 ppm/°C for the D grade.
- What is the minimum operating current for the LM4041DQDBZR?
The minimum operating current is 45 µA (typical).
- Does the LM4041DQDBZR require an external capacitor for operation?
No, it is stable with all capacitive loads and does not require an external capacitor.
- What are the available package types for the LM4041DQDBZR?
The LM4041DQDBZR is available in SOT-23-3 (DBZ) and other packages like SC-70 and TO-92.
- What is the operating temperature range for the LM4041DQDBZR?
The operating temperature range is –40°C to 125°C.
- What are some common applications for the LM4041DQDBZR?
Common applications include computers, battery chargers, switch-mode power supplies, data acquisition systems, and energy management.
- How does the LM4041DQDBZR achieve its high accuracy?
The LM4041DQDBZR uses fuse and Zener-zap reverse breakdown voltage trim during wafer sort to achieve high accuracy.
- What is the maximum operating current for the LM4041DQDBZR?
The maximum operating current is 12 mA.
- Is the LM4041DQDBZR suitable for portable applications?
