NCP803

Features:

* Precision VCC Monitor for 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies
* Precision Monitoring Voltages from 1.6 V to 4.9 V Available in 100 mV Steps
* 140 msec Guaranteed Minimum RESET Output Duration
* RESET Output Guaranteed to VCC = 1.0 V
* Low 1.0 A Supply Current
* VCC Transient Immunity
* Small SOT-23 Package
* No External Components
* Wide Operating Temperature: -40°C to 105°C


Application

* Computers
* Embedded Systems
* Battery Powered Equipment
* Critical P Power Supply Monitoring


Pinout




Specifications

Rating	Symbol	Value	Unit
Supply Voltage (VCC to GND)	VCC	6.0	V
RESET		-0.3 to (VCC + 0.3)	V
Input Current, VCC		20	mA
Output Current, RESET		20	mA
dV/dt (V CC)		100	V/ sec
Thermal Resistance, Junction to Air	RJA	491	°C/W
Operating Temperature Range	TA	-40 to +105	C °
Storage Temperature Range	Tstg	-65 to +150	C °
Lead Temperature (Soldering, 10 Seconds)	Tsol	+260	C °
Latch-up performance: Negative	ILatch-up	150	mA

Description

The NCP803 is a cost-effective system supervisor circuit designed to monitor VCC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.

The reset output is driven active within 10 sec of VCC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140 msec after VCC rises above the reset threshold. The NCP803 has an open drain active-low RESET output. The output of the NCP803 is guaranteed valid down to VCC = 1.0 V and is available in a SOT-23 package.

The NCP803 is optimized to reject fast transient glitches on the VCC line. Low supply current of 1.0 A (VCC = 3.2 V) make this device suitable for battery powered applications.