Automotive single ended 500KHz current mode PWM controller with 16V/10V UVLO 50% duty cycle
Texas Instruments UC2844AQ Product Info
1 April 20263
Parameters
Package
SOIC (D)-8-29.4 mm² 4.9 x 6
Features
Extended temperature performance of –40°C to 125°C
Optimized for off-line and dc to dc converters
Low start up current (<0.5mA)
Trimmed oscillator discharge current
Automatic feed forward compensation
Pulse-by-pulse current limiting
Enhanced load response characteristics
Under-voltage lockout with hysteresis
Double pulse suppression
High current totem pole output
Internally trimmed bandgap reference
500kHz operation
Low ro error amp
Extended temperature performance of –40°C to 125°C
Optimized for off-line and dc to dc converters
Low start up current (<0.5mA)
Trimmed oscillator discharge current
Automatic feed forward compensation
Pulse-by-pulse current limiting
Enhanced load response characteristics
Under-voltage lockout with hysteresis
Double pulse suppression
High current totem pole output
Internally trimmed bandgap reference
500kHz operation
Low ro error amp
Description
The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is designed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
The difference between members of this family are shown in the table below.
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