NCP345SNT1

Undervoltage Threshold :
Battery Backup Switching :
Power-Up Reset Delay (Typ) :
Manual Reset : Not Resettable
Maximum Operating Temperature : + 85 C
Mounting Style : SMD/SMT
Packaging : Reel
Number of Voltages Monitored : 1
Watchdog : No Watchdog
Package / Case : TSOP
Supply Voltage - Min : 3 V
Supply Current (Typ) : 1000 uA
Output Type : PFET Driver
Supply Voltage - Max : 25 V
Maximum Power Dissipation : 216 mW
Monitored Voltage : 6.85 V
Overvoltage Threshold : 6.85 V


Features:

• Overvoltage Turn−Off Time of less than 1.0 sec
• Accurate Voltage Threshold of 6.85 V (nominal)
• Undervoltage Lockout Protection
• CNTRL Input Compatible with 1.8 V Logic Levels
• Pb−Free Package is Available


Application

• Cellular Phones
• Digital Cameras
• Portable Computers and PDAs
• Portable CD and other Consumer Electronics


Pinout




Specifications

Rating	Pin	Symbol	Min	Max	Unit
OUT voltage to GND	1	VO	-0.3	30	v
Input and CNTRL pin voltage to GND	4 3	Vinput VCNTRL	-0.3 -0.3	30 13	V V
VCC Maximum Range	5	VCC(max)	-0.3	30	V
Maximum Power Dissipation at TA = 85°C	-	PD	-	0.216	W
Thermal Resistance Junction to Air	-	RJA	-	300	°C/W
Junction Temperature	-	TJ	-	150	°C
Operating Ambient Temperature	-	TA	-40	85	°C
VCNTRL Operating Voltage	3	-	0	5.0	V
Storage Temperature Range	-	Tstg	-65	150	°C
ESD performance (HBM)	all	-	2.5	-	KV

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.

Human body model (HBM): MIL STD 883C Method 3015−7, (R = 1500 ohms, C = 100 pf, F = 3 pulses delay 1 s).A


Description

The NCP345 overvoltage protection circuit (OVP) of the NCP345SNT1 protects sensitive electronic circuitry from overvoltage transients and power supply faults when used in conjunction with an external P−channel FET. The device is designed to sense an overvoltage condition and quickly disconnect the input voltage supply from the load before any damage can occur. The OVP consists of a precise voltage reference, a comparator with hysteresis, control logic, and a MOSFET gate driver. The OVP is designed on a robust BiCMOS process and is intended to withstand voltage transients up to 30 V.

The NCP345SNT1 is optimized for applications that have an external AC/DC adapter or car accessory charger to power the product and/or recharge the internal batteries. The nominal overvoltage threshold is 6.85 V so it is suitable for single cell Li−Ion applications as well as 3/4 cell NiCD/NiMH applications.

Parameters:

Technical/Catalog Information	NCP345SNT1
Vendor	ON Semiconductor (VA)
Category	Circuit Protection
Package / Case	*
Packaging	Cut Tape (CT)
Technology	Mixed Technology
Applications	General Purpose
Number of Circuits	1 - Single
Voltage - Working	3 ~ 25V
Voltage - Clamping	7.08V
Power (Watts)	216mW
Drawing Number	*
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	NCP345SNT1 NCP345SNT1 NCP345SNT1OSCT ND NCP345SNT1OSCTND NCP345SNT1OSCT