UC2842BN

Operating Supply Current :
Number of Outputs : 1
Operating Supply Voltage : 30 V
Mounting Style : Through Hole
Maximum Operating Temperature : + 150 C
Switching Frequency : 500 KHz
Rise Time : 50 ns
Duty Cycle (Max) : 100 %
Fall Time : 50 ns
Package / Case : PDIP-8


Description

The UC2842B series are high performance fixed frequency current mode controllers. They are specifically designed for OffLine and dctodc converter applications offering the designer a costeffective solution with minimal external components.These integrated circuits feature a trimmed oscillator for precise duty cycle control,a temperature compensated reference, high gain error amplifier,current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.The UC2842BN belongs to UC2842B series.

Features of the UC2842BN are:(1)trimmed oscillator for precise frequency control;(2)oscillator frequency guaranteed at 250 kHz;(3)current mode operation to 500 kHz;(4)automatic feed forward compensation;(5)latching PWM for cyclebycycle current limiting;(6)internally trimmed reference with undervoltage lockout;(7)high current totem pole output;(8)undervoltage lockout with hysteresis;(9)low startup and operating current.

The absolute maximum ratings of the UC2842BN can be summarized as:(1):the rating is total power supply and zener current,the symbol is ICC+IZ,the value is 30,the unit is mA;(2):the rating is output current,source or sink,the symbol is IO,the value is 1.0,the unit is A;(3):the rating is output energy (capacitive load per cycle),the symbol is W,the value is 5.0,the unit is J;(4):the rating is current sense and voltage feedback inputs,the symbol is Vin,the value is -0.3 to +5.5,the unit is V; (5):the rating is error amp output sink current,the symbol is IO,the value is 10,the unit is mA;(6):the rating is operating junction temperature,the symbol is TJ,the value is +150,the unit is ;(7):the rating is operating ambient temperature,the symbol is TA,the value is -25 to +85,the unit is ;(8):the rating is storage temperature range,the symbol is Tstg,the value is -65 to +150,the unit is .

Parameters:

Technical/Catalog Information	UC2842BN
Vendor	STMicroelectronics
Category	Integrated Circuits (ICs)
PWM Type	Current Mode
Number of Outputs	1
Package / Case	8-DIP (300 mil)
Packaging	Tube
Duty Cycle	100%
Voltage - Supply	9 V ~ 30 V
Frequency-Max	500kHz
Buck	No
Boost	Yes
Flyback	Yes
Inverting	No
Doubler	No
Divider	No
Cuk	No
Isolated	Yes
Drawing Number	*
Operating Temperature	-25°C ~ 85°C
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	UC2842BN UC2842BN 497 7691 5 ND 49776915ND 497-7691-5