UC2842AD

Operating Supply Voltage :
Operating Supply Current :
Number of Outputs : 1
Mounting Style : SMD/SMT
Switching Frequency : 500 KHz
Maximum Operating Temperature : + 85 C
Rise Time : 50 ns
Duty Cycle (Max) : 100 %
Fall Time : 50 ns
Package / Case : SOIC-14


Pinout




Description

The UC2842AD is designed as one kind of current mode PWM controller that belongs to the UC2842 family. This device has the UVLO threshold of 16V (on) and 10V (off), this UVLO threshold can be used in off-line applications, and could operates to duty cycles approaching 100%.

Features of the UC2842AD are:(1)optimized for off-line and DC to DC converters; (2)low start up current (<1mA); (3)automatic feed forward compensation; (4)pulse-by-pulse current limiting; (5)enhanced load response characteristics; (6)under-voltage lockout with hysteresis; (7)double pulse suppression; (8)high current totem pole output; (9)internally trimmed bandgap reference; (10)500khz operation; (11)low RO error amp.

The absolute maximum ratings of the UC2842AD can be summarized as:(1)Supply Voltage (Low Impedance Source): 30 V;(2)Supply Voltage (ICC <30mA): Self Limiting;(3)Output Current: ±1 A;(4)Output Energy (Capacitive Load): 5 uJ;(5)Analog Inputs (Pins 2, 3): -0.3 V to +6.3 V;(6)Error Amp Output Sink Current: 10 mA;(7)Power Dissipation at TA </= 25°C (DIL-8): 1 W;(8)Power Dissipation at TA </= 25°C (SOIC-14): 725 mW;(9)Storage Temperature Range: -65°C to +150°C;(10)Lead Temperature (Soldering, 10 Seconds): 300°C.

The electrical characteristics of this device UC2842AD can be summarized as:(1)Output Voltage: 4.95 V to 5.05 V;(2)Line Regulation: 6 mV to 20 mV;(3)Load Regulation: 6 to 25 mV;(4)Total Output Variation: 4.9 to 5.1 V;(5)Output Noise Voltage: 50 uV;(6)Long Term Stability: 5 to 25 mV;(7)Output Short Circuit: -30 to -180 mA;(8)Delay to Output: 150 ns to 300 ns;(9)Input Bias Current: -2 to -10 uA;(10)PSRR: 70 dB. If you want to know more information such as the electrical characteristics about it, please download the datasheet in www.seekic.com or www.chinaicmart.com.

Parameters:

Technical/Catalog Information	UC2842AD
Vendor	Texas Instruments
Category	Integrated Circuits (ICs)
PWM Type	Current Mode
Number of Outputs	1
Package / Case	14-SOIC (3.9mm Width), 14-SOL
Packaging	Tube
Duty Cycle	100%
Voltage - Supply	16 V ~ 30 V
Frequency-Max	450kHz
Buck	No
Boost	Yes
Flyback	Yes
Inverting	No
Doubler	No
Divider	No
Cuk	No
Isolated	No
Drawing Number	296; 4040047-3; D; 14
Operating Temperature	-40°C ~ 85°C
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	UC2842AD UC2842AD 296 11173 5 ND 296111735ND 296-11173-5