Details

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BUY LTC2901-1CGN#TRPBF https://www.utsource.net/itm/p/4790718.html
IC MONITOR SUPPLY QUAD 16-SSOP

Parameter	Symbol	Conditions	Min	Typ	Max	Unit
Supply Voltage	VCC	Operating	2.7	-	5.5	V
Quiescent Current	IQ	VCC = 3V	-	40	-	μA
Output Voltage Accuracy	ΔVOUT	VREF = 1.21V	-	±1.0	-	%
Power-On Reset Threshold	VPOK	Rising	2.23	-	2.68	V
Power-Good Hysteresis	VHYST		20	-	60	mV
Watchdog Timer Period	TWD	RWD = 1MΩ, VCC = 3V	1.6	-	2.4	s
Manual Reset Input Voltage	VMR	Active Low	0	-	0.8	V
Reset Output Voltage Level	VRO	Active Low	0	-	0.4	V

Instructions for Use:

1. Power Supply Connection:

   • Connect the supply voltage (VCC) to the appropriate pin. Ensure that the voltage is within the operating range of 2.7V to 5.5V.

2. Output Voltage Configuration:

   • The LTC2901-1CGN#TRPBF provides a fixed output reference voltage of 1.21V with ±1.0% accuracy. No external components are required for this configuration.

3. Power-Good Monitoring:

   • The device monitors the input voltage and asserts the power-good signal (PGOOD) when the input voltage exceeds the rising threshold (VPOK). The hysteresis ensures stable operation during power transitions.

4. Watchdog Timer:

   • A watchdog timer can be enabled by connecting an external resistor (RWD) to set the timeout period. For RWD = 1MΩ at VCC = 3V, the typical timeout period is between 1.6s and 2.4s.

5. Manual Reset:

   • The manual reset input (MR) can be pulled low to trigger a system reset. Ensure that the voltage on this pin does not exceed 0.8V when active.

6. Reset Output:

   • The reset output (RESET) goes low when any reset condition is met (power-on reset, watchdog timeout, or manual reset).

7. PCB Layout Considerations:

   • Place bypass capacitors close to the VCC and GND pins to ensure stability and reduce noise.
   • Keep signal traces short and direct to minimize potential interference.

8. Operating Temperature Range:

   • The device is specified to operate over the industrial temperature range from -40°C to +85°C.

For detailed application notes and further information, refer to the official datasheet provided by Analog Devices.

(For reference only)