DS1812:5V EconoReset with Active High Push-Pull Output

The DS1812 (5V) and DS1817 (3.3V) EconoResets are simple three-pin voltage monitors and power-on resets that hold reset for 150ms for stabilization after power returns to tolerance. The voltage monitor uses precision temperature reference and comparator circuits that detect out-of-tolerance conditions and generate an active high reset. The output has a push-structure capable of maintaining a valid output to 0 volts with a 100kΩ pull-down resistor. The low-power circuit has a quiescent current consumption of only 40 micro-amps. The DS1812 replaces discrete components and saves space, particularly in the new SOT-23 package. EconoResets can benefit any system that requires reliable processor operation, especially consumer products like printers, HVAC, energy management, cellular telephones, PDAs, and set-top boxes.

Key Features
  • Power-fail detection
  • Resets system during power transients
  • Push-pull active high reset
  • 150ms stabilization pause
  • Maximum quiescent current of 40µA
  • Operating ranges:
    • 5V with 5%, 10% or 15% tolerance
    • -40°C to +85°C
DS1812: Block Diagram
DS1812: Block Diagram
DataSheet
titleDownload file
DS1812 Data SheetDS1812.pdf
Parametrics
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
DS18123.3 to 5.5Active High
Push-Pull
85ms to 300msNo Watchdog2.540SOT/3
TO92/3
$1.16 @1k
Quality and Environmental Data
Ordering Information
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1812-105V-10% MonitorNo Longer AvailableDS1812-10+TO92,;3 pin;19.5 mm²-40°C to +85°CNo
DS1812-10+ActiveTO92,;3 pin;19.5 mm²-40°C to +85°CLead Free
DS1812-10+T&R5V-10%ActiveTO92,;3 pin;27.6 mm²-40°C to +85°CLead Free
DS1812-10/T&R5V-10%No Longer AvailableDS1812-10+T&RTO92,;3 pin;27.6 mm²-40°C to +85°CNo
DS1812-155V-15% MonitorNo Longer AvailableDS1812-15+TO92,;3 pin;19.5 mm²-40°C to +85°CNo
DS1812-15+ActiveTO92,;3 pin;19.5 mm²-40°C to +85°CLead Free
DS1812-15+T&R5V-15%ActiveTO92,;3 pin;27.6 mm²-40°C to +85°CLead Free
DS1812-15/T&R5V-15%No Longer AvailableDS1812-15+T&RTO92,;3 pin;27.6 mm²-40°C to +85°CNo
DS1812-55V-5% MonitorNo Longer AvailableDS1812-5+TO92,;3 pin;19.5 mm²-40°C to +85°CNo
DS1812-5+ActiveTO92,;3 pin;19.5 mm²-40°C to +85°CLead Free
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1812-5+T&R5V-5%ActiveTO92,;3 pin;27.6 mm²-40°C to +85°CLead Free
DS1812-5/T&R5V-5%No Longer AvailableDS1812-5+T&RTO92,;3 pin;27.6 mm²-40°C to +85°CNo
DS1812R-10+T&R5V-10%ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
DS1812R-10-UNo Longer AvailableDS1812R-10-U+SOT,;3 pin;8 mm²-40°C to +85°CNo
DS1812R-10-U+ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
DS1812R-10/T&R5V-10%No Longer AvailableDS1812R-10+T&RSOT,;3 pin;8 mm²-40°C to +85°CNo
DS1812R-15+T&R5V-15%ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
DS1812R-15-UNo Longer AvailableDS1812R-15-U+SOT,;3 pin;8 mm²-40°C to +85°CNo
DS1812R-15-U+ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
DS1812R-15/T&R5V-15%No Longer AvailableDS1812R-15+T&RSOT,;3 pin;8 mm²-40°C to +85°CNo
Part NumberNotesStatusRecommended ReplacementPackageTempRoHS
DS1812R-5+T&R5V-5%ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
DS1812R-5-UNo Longer AvailableDS1812R-5-U+SOT,;3 pin;8 mm²-40°C to +85°CNo
DS1812R-5-U+ActiveSOT,;3 pin;8 mm²-40°C to +85°CLead Free
DS1812R-5/T&R5V-5%No Longer AvailableDS1812R-5+T&RSOT,;3 pin;8 mm²-40°C to +85°CNo
DS1812R-5/T&R/C01No Longer AvailableSOT,;3 pin;8 mm²-40°C to +85°CNo
DS1812.pdf DS1812
DS1812.pdf DS1812
DS1812.pdf DS1812
DS1812.pdf DS1812
原理框图 DS1812