LM4132BMF-2.5 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
Texas Instruments LM4132BMF-2.5 is a precision 2.5 V fixed-output LDO voltage reference with 0.4 V maximum dropout voltage, 2.9 V to 5.5 V input range, and a compact SOT-23 5-pin package for accurate analog and ADC reference applications.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- LM4132BMF-2.5 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Non-compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Fixed 2.5 V precision voltage reference with 0.4 V maximum dropout voltage for low-headroom designs
- Wide input voltage range from 2.9 V to 5.5 V (absolute max 6 V) covering 3.3 V and 5 V supply rails
- Compact SOT-23 5-pin surface-mount package for space-constrained reference circuit integration
- High initial accuracy suitable for ADC reference, DAC reference, and precision analog signal chains
Applications
The LM4132BMF-2.5 is well suited as a precision 2.5 V ADC reference in data acquisition systems, sensor signal conditioning boards, and portable instrumentation where a stable and accurate voltage reference is required from a 3.3 V or 5 V supply. Its 0.4 V low dropout characteristic allows reliable operation even when the supply voltage sags under load. The compact 5-pin SOT-23 package enables tight board layout next to ADC inputs in IoT sensors, handheld meters, and industrial measurement modules.
Specifications
| Pbfree Code | No |
| Reach Compliance Code | Not Compliant |
| YTEOL | 0 |
| Adjustability | FIXED |
| Dropout Voltage1-Max | 0.4V |
| Dropout Voltage1-Nom | 0.4V |
| Input Voltage Absolute-Max | 6V |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.9V |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e0 |
| Number of Functions | 1 |
| Number of Outputs | 1 |
| Operating Temperature TJ-Max | 125°C |
| Operating Temperature TJ-Min | -40 °C |
| Output Current1-Max | 0.02A |
| Output Voltage1-Max | 2.5025V |
| Output Voltage1-Min | 2.4975V |
| Output Voltage1-Nom | 2.5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Regulator Type | FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.95mm |
| Terminal Position | DUAL |
| Voltage Tolerance-Max | 0.1% |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Non-compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM4132BMF-2.5:
Frequently Asked Questions
What is the output voltage and dropout specification of the LM4132BMF-2.5?
The LM4132BMF-2.5 provides a fixed 2.5 V reference output with a maximum dropout voltage of 0.4 V, meaning the device operates correctly with input voltages as low as 2.9 V. This makes it compatible with 3.3 V supply rails common in microcontroller-based systems, and it maintains accurate 2.5 V output up to a 5.5 V input, covering both 3.3 V and 5 V system designs.
How accurate is the LM4132BMF-2.5 reference output for use with a 12-bit or 16-bit ADC?
The LM4132BMF-2.5 belongs to the B-grade LM4132 family, which offers tighter initial accuracy than standard grades. For a 12-bit ADC using a 2.5 V reference, the LSB size is approximately 0.61 mV, requiring a reference accuracy well within 0.1% to avoid significant quantization errors. The LM4132B-grade precision makes it a suitable choice for 12-bit and select 14-bit ADC reference applications in industrial measurement and portable instrumentation.
Can the LM4132BMF-2.5 be used with a single-cell Li-ion battery as the input supply?
The LM4132BMF-2.5 requires a minimum input voltage of 2.9 V to maintain its 2.5 V output, which is near the lower end of a single-cell Li-ion battery's discharge range (approximately 3.0 V to 4.2 V). While it can technically operate at the beginning and middle of the discharge cycle, the 0.4 V dropout margin means the reference output drops out of regulation as the battery discharges below 2.9 V. A boost converter front-end is recommended for reliable full-discharge Li-ion battery operation.
What makes the SOT-23 5-pin package of the LM4132BMF-2.5 advantageous for analog reference designs?
The SOT-23 5-pin package of the LM4132BMF-2.5 provides a very small footprint of approximately 2.9 mm x 1.6 mm, allowing it to be placed close to the ADC reference input pin, minimizing trace inductance and noise pickup. The extra pins in the 5-pin version relative to a 3-pin SOT-23 accommodate additional bypass capacitor and output connections, improving reference stability. This package is ideal for compact handheld meters, wearable sensors, and multi-channel data acquisition boards.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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