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MAX6503UKN035+T

Name: MAX6503UKN035+T
Rating: 4.7 (12 reviews)

IC TEMP SWITCH SOT23-5

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Mfr。パート #MAX6503UKN035+T
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仕様

Part Status	Active
Trip Temperature Threshold	Cold
Switching Temperature	-35°C
Accuracy	±6°C
Current - Output (Max)	20mA
Output Type	Open Drain
Output	Active Low
Output Function	/UnderTemp
Selectable Hysteresis	Yes
Voltage - Supply	2.7 V ~ 5.5 V
Current - Supply	30µA
Operating Temperature	-55°C ~ 135°C
Mounting Type	Surface Mount
Package / Case	SC-74A, SOT-753
Supplier Device Package	SOT-23-5
Base Product Number	MAX650

概要

Description

MAX6503UKN035+T is a Maxim Integrated voltage‑monitor/reset device (a microprocessor supervisory circuit). The “035” indicates a fixed 3.5 V threshold version. It monitors the supply voltage and generates a reset signal to a microcontroller or processor when Vcc falls below the threshold or during power‑up until the supply is stable. The “UKN” suffix denotes the package type, and “+T” typically indicates tape‑and‑reel/RoHS lead‑free packaging. Key points:
- Fixed-threshold voltage detector with a reset output
- Ensures proper MCU startup and safe operation during power-down/up
- Low quiescent current and small footprint (typical for siting near the MCU)
- Reset output is usually active (low) and used to hold MCU in reset until Vcc is valid
- Used in battery-powered or power-sensitive systems for reliable reset management
For exact pinout, timing, current, and electrical characteristics, consult the MAX6503 datasheet for the UKN035+T variant.

Features

Here are the typical features of the MAX6503UKN035+T (MAX6503 family):
- Fixed 3.5V reset threshold (035 variant) with hysteresis
- Supply voltage range: 2.7V to 5.5V
- Ultra-low quiescent current
- Power-on reset (POR) when Vcc rises above threshold
- Manual reset input
- Watchdog input (WDI) to refresh/reset timer
- Reset output (RST#) is active-low
- Temperature range: -40°C to +125°C
- 8-pin package, UKN code; Tape and Reel (+T)
- Suitable for microcontroller/DSP supervision and system watchdog applications
Note: exact pinout and timing specs are in the datasheet for the specific package variant.

Package

The MAX6503UKN035+T is supplied in Maxim’s 8-pin µMAX (U) surface‑mount package. The “+T” suffix indicates tape-and-reel packaging.

Pinout

Pin count: 5 pins (µMAX / SOT23-5 package).
Function (concise): The MAX6503UKN035+T is a voltage supervisory/reset IC with a 3.5 V threshold. It monitors VCC and asserts an active‑low reset output (open‑drain) when VCC falls below the threshold or during power‑up (power‑on reset). It also provides a manual/pushbutton reset input for generating a reset pulse.

Manufacturer

The MAX6503UKN035+T is manufactured by Maxim Integrated (now part of Analog Devices). Maxim/Analog Devices is a semiconductor company that designs and supplies analog and mixed‑signal integrated circuits—power management, interface, timing/supervisory ICs, sensors and signal‑chain solutions for industrial, automotive, communications and consumer markets.

Application

Applications: voltage supervisor and reset-generation for digital systems; microcontrollers/microprocessors and FPGAs/SoCs; power-on reset and brown-out/power-fail protection; battery-powered and portable devices; automotive, industrial and telecom equipment requiring deterministic reset signaling and undervoltage monitoring.

Equivalent

Equivalent parts depend on the exact threshold and reset behavior. For a MAX6503UKN035+T (≈3.5V supervisor with reset), common cross-parts include:
- TI: TPS3800/TPS3808/TPS3700 family (3.3–3.6V options)
- Microchip: MCP1316/MCP1317
- Analog Devices: ADM8310/ADM8317
- ON Semiconductor: NCP431A/NCP431B
- Maxim: MAX809/MAX810
Verify Vcc range, reset output (push-pull/open-drain), and auto/manual reset in the datasheets to match your design.