APX803L Micro Power Voltage Detectors

Diodes Incorporated APX803L Micro Power Voltage Detectors are designed for monitoring the power supplies in microprocessors (μP), μC, and digital systems. The APX803L requires a low supply current of only 1.0μA which minimizes the operating current, improving system efficiency on portable, battery-powered devices. High threshold voltage accuracy of +1.5% on the device allows precise VCC reset thresholds. The device circuits perform supervisory functions by sending out a reset signal when the monitored VCC level falls below the chosen threshold voltage level. The reset signal will remain until VCC recovers to a level higher than the threshold voltage, completing the cycle. Another benefit provided is an open-drain output with an active-low output pin that features several delay time options (0ms, 55ms, 220ms, and 450ms) as needed by the system. The packages of 3-pin SOT23, SOT323, SC59, SOT25, and two-pin variants are available on the APX803L Voltage Detectors.

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Qty. RoHS ECAD Model Type
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Threshold Voltage
Number of Inputs Monitored
Output Type
Manual Reset
Watchdog Timers
Battery Backup Switching
Reset Delay Time
Supply Voltage - Max
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Diodes Incorporated Supervisory Circuits 1.2V, 220ms Reset Generator
Datasheet
581In Stock
3,000Expected 2027/04/19
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 1.2 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 1.8V, 220ms Reset Generator
Datasheet
3,347In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 1.8 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.3V, 220ms Reset Generator
Datasheet
60In Stock
3,000Expected 2027/04/07
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.3 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.5V, 220ms Reset Generator
Datasheet
3,185In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.5 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.6V, 220ms Reset Generator
Datasheet
4,698In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.6 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.7V, 220ms Reset Generator
Datasheet
850In Stock
6,000Expected 2026/08/28
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.7 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.7V, 220ms Reset Generator
Datasheet
4,831In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23R-3 2.7 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.8V, 220ms Reset Generator
Datasheet
4,061In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.8 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 3.0V, 220ms Reset Generator
Datasheet
30In Stock
9,000On Order
MouseReel Available
Min.: 1
Mult.: 1
Max.: 760
: 3,000

Voltage Detector SMD/SMT SOT-23-3 3 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 3.1V, 220ms Reset Generator
Datasheet
2,907In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 3.1 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 3.3V, 220ms Reset Generator
Datasheet
122In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 3.3 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 3.6V, 220ms Reset Generator
Datasheet
3,278In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 3.6 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 4.1V, 220ms Reset Generator
Datasheet
155In Stock
3,000Expected 2027/03/26
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 4.1 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 4.4V, 220ms Reset Generator
Datasheet
2,806In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 4.4 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.6V, 450ms Reset Generator
Datasheet
3,471In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.6 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 450 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.7V, 450ms Reset Generator
Datasheet
2,732In Stock
3,000On Order
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.7 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 450 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits Reset Generator
Datasheet
2,974In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23R-3 2.7 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 450 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.9V, 450ms Reset Generator
Datasheet
3,146In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.9 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 450 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 3.0V, 450ms Reset Generator
Datasheet
13,779In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 760
: 3,000

Voltage Detector SMD/SMT SOT-23-3 3 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 450 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 3.3V, 450ms Reset Generator
Datasheet
3,619In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 3.3 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 450 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 4.0V, 450ms Reset Generator
Datasheet
4,642In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 4 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 450 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.9V, 220ms Reset Generator
Datasheet
25,230On Order
MouseReel Available
Min.: 1
Mult.: 1
Max.: 910
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.9 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 2.5V, 0ms Reset Generator
Datasheet
3,000Expected 2027/03/19
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 2.5 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel

Diodes Incorporated Supervisory Circuits 1.6V, 220ms Reset Generator
Datasheet
3,000Expected 2027/04/16
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-23-3 1.6 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel
Diodes Incorporated Supervisory Circuits Reset Generator
Datasheet
6,000Expected 2027/03/12
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Voltage Detector SMD/SMT SOT-323-3 2.9 V 1 Input Active Low, Open Drain No Manual Reset No Watchdog No Backup 220 ms 5.5 V - 40 C + 150 C 1.5 % APX803L Reel, Cut Tape, MouseReel