LM3723EM5-2.32 Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
Single-channel voltage supervisor and processor reset IC with a fixed 2.32V reset threshold in a 5-pin SOT-23 package. Monitors supply voltage and asserts a reset signal when it drops below the 2.32V trip point to protect microprocessor startup integrity. Available from Texas Instruments in compact plastic SOT-23 packaging for worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- LM3723EM5-2.32 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM3723EM5-2.32?
- Fixed 2.32V reset threshold provides precise undervoltage detection without external resistor divider networks
- Single-channel supervisor in a 5-pin SOT-23 package for minimal board footprint and low BOM cost
- Dedicated processor reset output ensures controlled MCU startup and prevents code corruption during power-on and brownout events
- Simple single-function design with no adjustable threshold reduces design complexity in battery and regulated-rail applications
What is LM3723EM5-2.32 used for?
The LM3723EM5-2.32 is used in embedded processor systems to assert a clean reset signal whenever the supply rail drops below 2.32V, preventing microcontrollers from executing code in an undefined power state. It is commonly placed on 2.5V and 3.3V regulated supply rails in industrial controllers, communication modules, and consumer electronics where reliable cold-start and brownout recovery behavior is required. The compact SOT-23-5 package makes it practical to include as a one-component supervisor on densely packed MCU boards without sacrificing board space.
What are the specifications of LM3723EM5-2.32?
| YTEOL | 0 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | VOLTAGE SUPERVISOR/RESET IC |
| JESD-30 Code | R-PDSO-G5 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Temperature Grade | AUTOMOTIVE |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.953mm |
| Terminal Position | DUAL |
| Threshold Voltage-Nom | +2.32V |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LM3723EM5-2.32 datasheet?
LM3723EM5-2.32 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM3723EM5-2.32?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
Why is a fixed 2.32V threshold valuable in a 2.5V regulated rail design using LM3723EM5-2.32?
On a 2.5V regulated rail, the LM3723EM5-2.32's 2.32V fixed threshold provides a 180mV margin below the nominal supply. This margin ensures the reset remains de-asserted during normal 2.5V operation and only fires during genuine undervoltage events, protecting the microprocessor from executing code while the supply is unstable without causing nuisance resets from minor load transients.
How does LM3723EM5-2.32 simplify the reset circuit compared to an MCU with a built-in brown-out detector at 2.2V?
While many MCUs include internal brown-out detection around 2.2V, those circuits often carry ±100mV accuracy tolerances. The LM3723EM5-2.32 provides a dedicated external threshold at 2.32V with tighter accuracy, allowing designers to guarantee a system-level reset before the MCU's own supply drops into an ambiguous operating region. Additionally, external supervisors like this cover scenarios where the MCU reset pin must be driven by a supply rail other than the one powering the MCU core.
What reset output type does LM3723EM5-2.32 provide, and how does it interface with a 3.3V MCU reset pin?
The LM3723EM5-2.32 provides an active-low open-drain or push-pull reset output (see datasheet for specific output topology) on its 5-pin SOT-23 package. When monitoring a 2.32V rail while a 3.3V MCU reset pin is pulled up through a 10kΩ resistor, the supervisor can assert the reset low and hold it asserted until the monitored supply recovers above the 2.32V threshold plus hysteresis.
For a coin-cell powered design discharging from 3V to 2V, at what point does LM3723EM5-2.32 assert reset?
As the coin-cell voltage discharges through the 2.32V threshold, LM3723EM5-2.32 asserts its reset output to halt MCU execution before the supply drops further. This protects against EEPROM write corruption and flash access errors that can occur below the MCU's minimum operating voltage, and keeps the 5-pin SOT-23 supervisor as the first line of defense in battery end-of-life scenarios.
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About Texas Instruments
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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