mic38c44a Micrel Semiconductor, mic38c44a Datasheet - Page 3

• Manufacturer Part Number: mic38c44a
• Description: Mic38c42a/mic38c43a/mic38c44a/mic38c45a Bicmos Current-mode Pwm Controllers
• Manufacturer: Micrel Semiconductor

MIC38C42A/43A/44A/45A
Pin Configuration
Pin Description
April 2005
Pin Number
1
2
3
4
5
6
7
8
Pin Name
COMP
RT/CT
VREF
ISNS
GND
OUT
VDD
FB
COMP
RT/CT
ISNS
FB
8-Lead MM8™ (MM)
Pin Function
Compensation: Connect external compensation network to modify the error
amplifier output.
Feedback (Input): Error amplifier input. Feedback is 2.5V at desired output
voltage.
Current Sense (Input): Current sense comparator input. Connect to current
sensing resistor or current transformer.
Timing Resistor/Timing Capacitor: Connect external RC network to select
switching frequency.
Ground: Combined analog and power ground.
Power Output: Totem-pole output.
Analog Supply (Input): Controller circuitry supply input. Return to analog
ground (AGND).
5V Reference (Output): Connect external RC network.
1
2
3
4
8-Lead SOIC (M)
MIC38C4xA
3
8
7
6
5
VREF
VDD
OUT
GND
M9999-042205
Micrel, Inc.