LTC2917 Series

Voltage Supervisor with 27 Selectable Thresholds and Watchdog Timer

Catalog

Voltage Supervisor with 27 Selectable Thresholds and Watchdog Timer

Part	Output	Package / Case	Reset	Type	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Reset Timeout	Number of Voltages Monitored	Supplier Device Package	Voltage - Threshold	Package / Case [x]	Package / Case [x]
Analog Devices LTC2917IDDB-B1#TRMPBF	Open Drain or Open Collector	10-WFDFN Exposed Pad	Active Low	Multi-Voltage Supervisor	Surface Mount	85 °C	-40 °C	150 ms	1	10-DFN (3x2)	27
Analog Devices LTC2917IMS-B1#TRPBF	Open Drain or Open Collector	10-MSOP 10-TFSOP	Active Low	Multi-Voltage Supervisor	Surface Mount	85 °C	-40 °C	150 ms	1	10-MSOP	27	3 mm	0.118 in
Analog Devices LTC2917CDDB-A1#TRMPBF	Open Drain or Open Collector	10-WFDFN Exposed Pad	Active Low	Multi-Voltage Supervisor	Surface Mount	70 °C	0 °C	150 ms	1	10-DFN (3x2)	27
Analog Devices LTC2917IMS-A1#PBF	Open Drain or Open Collector	10-MSOP 10-TFSOP	Active Low	Multi-Voltage Supervisor	Surface Mount	85 °C	-40 °C	150 ms	1	10-MSOP	27	3 mm	0.118 in
Analog Devices LTC2917HMS-A1#TRPBF	Open Drain or Open Collector	10-MSOP 10-TFSOP	Active Low	Multi-Voltage Supervisor	Surface Mount	125 °C	-40 °C	150 ms	1	10-MSOP	27	3 mm	0.118 in
Analog Devices LTC2917HDDB-B1#TRPBF	Open Drain or Open Collector	10-WFDFN Exposed Pad	Active Low	Multi-Voltage Supervisor	Surface Mount	125 °C	-40 °C	150 ms	1	10-DFN (3x2)	27
Analog Devices LTC2917IMS-B1#PBF	Open Drain or Open Collector	10-MSOP 10-TFSOP	Active Low	Multi-Voltage Supervisor	Surface Mount	85 °C	-40 °C	150 ms	1	10-MSOP	27	3 mm	0.118 in
Analog Devices LTC2917HDDB-A1#TRMPBF	Open Drain or Open Collector	10-WFDFN Exposed Pad	Active Low	Multi-Voltage Supervisor	Surface Mount	125 °C	-40 °C	150 ms	1	10-DFN (3x2)	27
Analog Devices LTC2917HDDB-A1#TRPBF	Open Drain or Open Collector	10-WFDFN Exposed Pad	Active Low	Multi-Voltage Supervisor	Surface Mount	125 °C	-40 °C	150 ms	1	10-DFN (3x2)	27
Analog Devices LTC2917CMS-A1#PBF	Open Drain or Open Collector	10-MSOP 10-TFSOP	Active Low	Multi-Voltage Supervisor	Surface Mount	70 °C	0 °C	150 ms	1	10-MSOP	27	3 mm	0.118 in

Catalog

Voltage Supervisor with 27 Selectable Thresholds and Watchdog Timer

Key Features

• 9 Selectable Supply Voltages12V, 5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, 1V, +ADJ (0.5V)

• 12V, 5V, 3.3V, 2.5V, 1.8V, 1.5V, 1.2V, 1V, +ADJ (0.5V)

• 3 Selectable Tolerances–5%, –10%, –15% (LTC2917)

• –5%, –10%, –15% (LTC2917)

• Manual Reset Input (LTC2918)

• 1.5V to 5.5V Supply Operation

• Adjustable Watchdog Timeout

• Windowed Watchdog Timeout for Higher Reliability Applications (LTC2917-B, LTC2918-B)

• 6.2V Shunt Regulator for High Voltage Operation

• Guaranteed Operation to 125°C

• Guaranteed Threshold Accuracy: ±1.5%

• Low Quiescent Current: 30µA Typical

• Power Supply Glitch Immunity

• GuaranteedRSTfor VCC≥ 0.8V

• 10-Lead MSOP Packages and (3mm × 2mm) DFN Packages

Description

The LTC2917-A/LTC2917-B and LTC2918-A/LTC2918-B are low voltage single-supply monitors with selectable thresholds and an adjustable watchdog timer. The parts operate from 1.5V to 5.5V and consume a quiescent current of only 30µA.Two three state inputs select one of nine internally programmed thresholds without the need for external resistors. For the LTC2917, an additional three state input determines the tolerance (–5%, –10%, –15%). The tolerance for the LTC2918 is fixed at –5%. Threshold accuracy is guaranteed at ±1.5% over the entire operating temperature range. Glitch filtering ensures reliable reset operation without false triggering.The reset timeout and the watchdog timeout may be set with no external components, or adjusted using an external capacitor. A windowed watchdog feature is available for high-reliability applications (B1 versions). A separate manual reset input on the LTC2918-A/LTC2918-B allows a simple push button interface.Operation to 125°C makes the LTC2917-A/LTC2917-B and LTC2918-A/LTC2918-B suitable for automotive applications.ApplicationsHandheld DevicesCell Phone Base StationsAutomotive Control SystemsNetwork ServersOptical Networking Systems