KA2803B

Number of Channels :
Comparator Type :
Product :
Output Type :
Offset Voltage (Max) :
Maximum Power Dissipation :
Packaging : Tube
Mounting Style : Through Hole
Package / Case : DIP-8
Maximum Operating Temperature : 85 C
Response Time : 4 ms
Supply Current (Max) : 480 uA


Features:

• Low Power Consumption P_D =5mW, 100V/200V
• Built-in Voltage Regulator
• High Gain Differential Amplifier
• 0.4mA Output Current Pulse to Trigger SCR' S
• Low External Part Count
• DIP Package (8-DIP), High Packing Density
• High Noise Immunity, Large Surge Margin
• Super Temperature Characteristic of Input Sensitivity
• Wide Operating Temperature Range (T_A = -25°C ~ +80°C)
• Operation from 12 to 20V Input




Specifications

Product	Product status	Eco Status	Pricing*	Package type	Leads	Packing method	Package Drawing
KA2803B	Full Production	RoHS Compliant	$0.214	DIP	8	RAIL
KA2803BDTF	Full Production	RoHS Compliant	$0.25	SOIC	8	TAPE REEL

* Fairchild 1,000 piece Budgetary Pricing

** A sample button will appear if the part is available through Fairchild's on-line samples program. If there is no sample button, please contact a Fairchild distributor to obtain samples

Parameter	Symbol	Value	Unit
Supply Voltage	VCC	20	V
Supply Current	ICC	8	mA
Power Dissipation	PD	300	mW
Lead Temperature (Soldering 10sec)	TLEAD	260
Operating Temperature	TOPR	- 25 ~ +80
Storage Temperature Range	TSTG	-65 ~ +150

Description

The KA2803B is designed for use in earth leakage circuitinterrupters, for stable operation of the AC line in breakers.The input of the differential amplifier is connected to thesecondary coil of ZCT (Zero Current Transformer). Theamplified output of differential amplifier is integrated atexternal capacitor to gain adequate time delay that is specifiedin KSC4613. The level comparator generates high levelwhen earth leakage current is greater than the fixed level.

Parameters:

Technical/Catalog Information	KA2803B
Vendor	Fairchild Semiconductor
Category	Integrated Circuits (ICs)
Applications	Earth Leakage Detector
Current - Supply	400A
Voltage - Supply	-
Package / Case	8-DIP
Packaging	Tube
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	KA2803B KA2803B